Journal articles: 'Biomechanica'

1

Scheepens, Sabine. "Biomechanica in de sportpraktijk." PodoPost 31, no. 8 (October 2018): 19–21. http://dx.doi.org/10.1007/s12480-018-0101-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Grelsamer, Ronald P., and John R. Klein. "Biomechanica van het patellofemorale gewricht." Stimulus 19, no. 3 (September 2000): 198. http://dx.doi.org/10.1007/bf03062780.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Janssen, Ingrid. "Invloed maatzolen op biomechanica bij wielrennen." Podosophia 23, no. 5 (September 2015): 26–28. http://dx.doi.org/10.1007/s12481-015-0088-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Glasoe, W. M., H. J. Yack, and C. L. Saltzman. "Anatomie en biomechanica van de eerste straal." Stimulus 20, no. 1 (March 2001): 43–46. http://dx.doi.org/10.1007/bf03062829.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

DonTigny, Richard L. "Biomechanica en behandeling van het sacro-iliacale gewricht." Stimulus 14, no. 2 (June 1995): 72–79. http://dx.doi.org/10.1007/bf03075978.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Bronts, Henk M. "Het effect van heel rockers op de biomechanica." Podosophia 26, no. 4 (November 19, 2018): 156–59. http://dx.doi.org/10.1007/s12481-018-0209-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Limpens, Maureen. "Je gaat minder vanuit shorewaarden en meer vanuit biomechanica denken." PodoSophia 22, no. 6 (November 2014): 32–33. http://dx.doi.org/10.1007/s12481-014-0123-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Wdowicz, Daniel. "Biomechanika zderzeń. Podejścia, źródła informacji, eksperymenty, modelowanie." Paragraf na Drodze, no. 3/2022 (December 30, 2022): 9–23. http://dx.doi.org/10.4467/15053520pnd.22.014.16984.

Full text

Abstract:

W artykule przedstawiono wybrane zagadnienia związane z metodami eksperymentalnymi i symulacyjnymi biomechaniki zderzeń. Podana została definicja biomechaniki zderzeń, jako szczególnej dziedziny na pograniczu nauk inżynierskich i medycznych. Przedstawiono koncepcyjny schemat działań związanych z prowadzeniem naukowych badań biomechanicznych. Omówione zostały pokrótce źródła wiedzy biomechanicznej, takie jak testy na zwierzętach, ochotnikach, zwłokach, manekinach oraz symulacje numeryczne. Dla każdego ze źródeł wiedzy wymieniono jego zalety oraz ograniczenia. Odnotowano, że chociaż badacze napotykają wiele wyzwań związanych z prowadzeniem eksperymentów i symulacji biomechanicznych, to istnieje duży potencjał w wykorzystaniu osiągnięć biomechaniki nie tylko w przemyśle, lecz także w rekonstrukcji wypadków. Impact biomechanics. Approaches, information sources, experiments and modeling The aim of the article was to present an overview of experimental methods in impact biomechanics. The definition of impact biomechanics as a special branch combining engineering and medical sciences is provided, together with a conceptual scheme of biomechanics research in the pipeline. Various sources of biomechanical data are briefly described, such as animal testing, volunteer testing, cadaver and anthropomorphic test devices (dummy) testing and numerical simulations. Advantages and drawbacks of each of these information sources are discussed. Many challenges related to conducting biomechanical experiments and simulations are indicated. However, there is a great potential for utilizing the accomplishments of impact biomechanics not only in industrial applications, but also in the practice of road accident reconstruction.

APA, Harvard, Vancouver, ISO, and other styles

9

Rodgers, Mary M. "Dynamische biomechanica van gezonde enkel en voet tijdens gewoon lopen en hardlopen." Stimulus 9, no. 4 (December 1990): 183. http://dx.doi.org/10.1007/bf03075693.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Ortiz-Padilla, Vanessa E., Mauricio A. Ramírez-Moreno, Gerardo Presbítero-Espinosa, Ricardo A. Ramírez-Mendoza, and Jorge de J. Lozoya-Santos. "Survey on Video-Based Biomechanics and Biometry Tools for Fracture and Injury Assessment in Sports." Applied Sciences 12, no. 8 (April 14, 2022): 3981. http://dx.doi.org/10.3390/app12083981.

Full text

Abstract:

This work presents a survey literature review on biomechanics, specifically aimed at the study of existent biomechanical tools through video analysis, in order to identify opportunities for researchers in the field, and discuss future proposals and perspectives. Scientific literature (journal papers and conference proceedings) in the field of video-based biomechanics published after 2010 were selected and discussed. The most common application of the study of biomechanics using this technique is sports, where the most reported applications are american football, soccer, basketball, baseball, jumping, among others. These techniques have also been studied in a less proportion, in ergonomy, and injury prevention. From the revised literature, it is clear that biomechanics studies mainly focus on the analysis of angles, speed or acceleration, however, not many studies explore the dynamical forces in the joints. The development of video-based biomechanic tools for force analysis could provide methods for assessment and prediction of biomechanical force associated risks such as injuries and fractures. Therefore, it is convenient to start exploring this field. A few case studies are reported, where force estimation is performed via manual tracking in different scenarios. This demonstration is carried out using conventional manual tracking, however, the inclusion of similar methods in an automated manner could help in the development of intelligent healthcare, force prediction tools for athletes and/or elderly population. Future trends and challenges in this field are also discussed, where data availability and artificial intelligence models will be key to proposing new and more reliable methods for biomechanical analysis.

APA, Harvard, Vancouver, ISO, and other styles

11

Barrentine, Steven W., and Glenn S. Fleisig. "Biomechanica van de slingerworp softball-pitch met implicaties voor letselmechanismen in de schouder en elleboog." Stimulus 19, no. 3 (September 2000): 216–17. http://dx.doi.org/10.1007/bf03062787.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Silva, Jullyanne, Tiago Atalaia, João Abrantes, and Pedro Aleixo. "Gait Biomechanical Parameters Related to Falls in the Elderly: A Systematic Review." Biomechanics 4, no. 1 (March 5, 2024): 165–218. http://dx.doi.org/10.3390/biomechanics4010011.

Full text

Abstract:

According to the World Health Organization, one-third of elderly people aged 65 or over fall annually, and this number increases after 70. Several gait biomechanical parameters were associated with a history of falls. This study aimed to conduct a systematic review to identify and describe the gait biomechanical parameters related to falls in the elderly. MEDLINE Complete, Cochrane, Web of Science, and CINAHL Complete were searched for articles on 22 November 2023, using the following search sentence: (gait) AND (fall*) AND ((elder*) OR (old*) OR (senior*)) AND ((kinematic*) OR (kinetic*) OR (biomechanic*) OR (electromyogram*) OR (emg) OR (motion analysis*) OR (plantar pressure)). This search identified 13,988 studies. From these, 96 were selected. Gait speed, stride/step length, and double support phase are gait biomechanical parameters that differentiate fallers from non-fallers. Fallers also tended to exhibit higher variability in gait biomechanical parameters, namely the minimum foot/toe clearance variability. Although the studies were scarce, differences between fallers and non-fallers were found regarding lower limb muscular activity and joint biomechanics. Due to the scarce literature and contradictory results among studies, it is complex to draw clear conclusions for parameters related to postural stability. Minimum foot/toe clearance, step width, and knee kinematics did not differentiate fallers from non-fallers.

APA, Harvard, Vancouver, ISO, and other styles

13

Fan, Yubo, Bo Wang, Kaihua Xiu, Xiang Dong, and Ming Zhang. "Biomechanical Animal Experimental Research on Osseointegration(Orthopaedic Biomechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2004.1 (2004): 175–76. http://dx.doi.org/10.1299/jsmeapbio.2004.1.175.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Higham, Timothy E., Sean M. Rogers, R. Brian Langerhans, Heather A. Jamniczky, George V. Lauder, William J. Stewart, Christopher H. Martin, and David N. Reznick. "Speciation through the lens of biomechanics: locomotion, prey capture and reproductive isolation." Proceedings of the Royal Society B: Biological Sciences 283, no. 1838 (September 14, 2016): 20161294. http://dx.doi.org/10.1098/rspb.2016.1294.

Full text

Abstract:

Speciation is a multifaceted process that involves numerous aspects of the biological sciences and occurs for multiple reasons. Ecology plays a major role, including both abiotic and biotic factors. Whether populations experience similar or divergent ecological environments, they often adapt to local conditions through divergence in biomechanical traits. We investigate the role of biomechanics in speciation using fish predator–prey interactions, a primary driver of fitness for both predators and prey. We highlight specific groups of fishes, or specific species, that have been particularly valuable for understanding these dynamic interactions and offer the best opportunities for future studies that link genetic architecture to biomechanics and reproductive isolation (RI). In addition to emphasizing the key biomechanical techniques that will be instrumental, we also propose that the movement towards linking biomechanics and speciation will include (i) establishing the genetic basis of biomechanical traits, (ii) testing whether similar and divergent selection lead to biomechanical divergence, and (iii) testing whether/how biomechanical traits affect RI. Future investigations that examine speciation through the lens of biomechanics will propel our understanding of this key process.

APA, Harvard, Vancouver, ISO, and other styles

15

Hou, Qiling. "Biomechanics of the Ankle: Exploring Structure, Function, and Injury Mechanisms." Studies in Sports Science and Physical Education 1, no. 2 (September 2023): 1–16. http://dx.doi.org/10.56397/ssspe.2023.09.01.

Full text

Abstract:

This paper provides an overview of the biomechanical considerations related to ankle injury prediction, prevention, and rehabilitation. Firstly, we discuss the biomechanical factors that contribute to ankle fractures, including loading patterns and bone density. We then explore various biomechanical assessment techniques, such as motion analysis, force measurements, and imaging modalities, which can be used to predict injury risk, guide treatment decisions, and monitor rehabilitation progress. Additionally, we examine biomechanical interventions, including bracing, taping, muscle strengthening, and proprioceptive training, which have proven effective in improving ankle stability and preventing injuries. Furthermore, we highlight the emerging technologies of wearable sensors and computational modeling, which offer new avenues for assessing ankle biomechanics and personalizing interventions. Ultimately, this paper emphasizes the integration of biomechanics with personalized medicine as a promising approach for optimizing ankle injury prevention and rehabilitation outcomes. However, further research is needed to address unanswered questions and explore future directions in ankle biomechanics.

APA, Harvard, Vancouver, ISO, and other styles

16

Pniakowska, Zofia, Piotr Jurowski, and Joanna Wierzbowska. "The role of corneal biomechanical properties assessment in laser vision correction – the introduction." OphthaTherapy. Therapies in Ophthalmology 9, no. 3 (September 30, 2022): 183–86. http://dx.doi.org/10.24292/01.ot.300922.2.

Full text

Abstract:

The role of corneal biomechanical properties in patients referred to laser vision correction (LVC) is currently being raised. Understanding of corneal biomechanics may support the proper selection of refractive surgery candidates, improve the refractive outcomes and safety of refractive procedures. The Ocular Response Analyzer (ORA) and Corvis ST are commonly used devices to assess corneal biomechanical parameters in LVC. The vertical corneal incisions have a greater impact on corneal biomechanics weakening than horizontal incisions. Maintaining the high biomechanical strength of the cornea following LVC can decrease the potential risk of postoperative ectasia.

APA, Harvard, Vancouver, ISO, and other styles

17

Yokobori, Takeo. "What are Biomechanics and Biomechanical Behaviour?" Bio-Medical Materials and Engineering 4, no. 2 (1994): 69–76. http://dx.doi.org/10.3233/bme-1994-4202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Liu, Jun Qian. "Study on Knee Movement Mechanical Simulation in Basketball Shooting." Applied Mechanics and Materials 536-537 (April 2014): 1351–54. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1351.

Full text

Abstract:

Application of sports biomechanics, sports biomechanics analyses of technical action shots, biomechanical characteristics obtained the basketball shooting skill and summarize the influencing factors of sports biomechanics shooting rate, especially for the shot before the body, lower limbs of each part of the action process were studied.

APA, Harvard, Vancouver, ISO, and other styles

19

Oh, Mujin, Taeoh Tak, and Jiyeon LEE. "66847 Biomechanical Analysis of Steering Motion Using Motion Analysis Technique(Biomechanics)." Proceedings of the Asian Conference on Multibody Dynamics 2010.5 (2010): _66847–1_—_66847–7_. http://dx.doi.org/10.1299/jsmeacmd.2010.5._66847-1_.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Tai, Ching-Lung, Weng-Pin Chen, Mel S. Lee, and Lan-Li Lian. "The Biomechanical Study of A Modified Intertrochanteric Valgus Osteotomy(Orthopaedic Biomechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2004.1 (2004): 179–80. http://dx.doi.org/10.1299/jsmeapbio.2004.1.179.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

IVANCEVIC, TIJANA T. "JET-RICCI GEOMETRY OF TIME-DEPENDENT HUMAN BIOMECHANICS." International Journal of Biomathematics 03, no. 01 (March 2010): 79–91. http://dx.doi.org/10.1142/s179352451000088x.

Full text

Abstract:

We propose the time-dependent generalization of an "ordinary" autonomous human biomechanics, in which total mechanical + biochemical energy is not conserved. We introduce a general framework for time-dependent biomechanics in terms of jet manifolds derived from the extended musculo-skeletal configuration manifold. The corresponding Riemannian geometrical evolution follows the Ricci flow diffusion. In particular, we show that the exponential-like decay of total biomechanical energy (due to exhaustion of biochemical resources) is closely related to the Ricci flow on the biomechanical configuration manifold.

APA, Harvard, Vancouver, ISO, and other styles

22

Zhao, Yunmei, Saeed Siri, Bin Feng, and David M. Pierce. "The Macro- and Micro-Mechanics of the Colon and Rectum II: Theoretical and Computational Methods." Bioengineering 7, no. 4 (November 25, 2020): 152. http://dx.doi.org/10.3390/bioengineering7040152.

Full text

Abstract:

Abnormal colorectal biomechanics and mechanotransduction associate with an array of gastrointestinal diseases, including inflammatory bowel disease, irritable bowel syndrome, diverticula disease, anorectal disorders, ileus, and chronic constipation. Visceral pain, principally evoked from mechanical distension, has a unique biomechanical component that plays a critical role in mechanotransduction, the process of encoding mechanical stimuli to the colorectum by sensory afferents. To fully understand the underlying mechanisms of visceral mechanical neural encoding demands focused attention on the macro- and micro-mechanics of colon tissue. Motivated by biomechanical experiments on the colon and rectum, increasing efforts focus on developing constitutive frameworks to interpret and predict the anisotropic and nonlinear biomechanical behaviors of the multilayered colorectum. We will review the current literature on computational modeling of the colon and rectum as well as the mechanical neural encoding by stretch sensitive afferent endings, and then highlight our recent advances in these areas. Current models provide insight into organ- and tissue-level biomechanics as well as the stretch-sensitive afferent endings of colorectal tissues yet an important challenge in modeling theory remains. The research community has not connected the biomechanical models to those of mechanosensitive nerve endings to create a cohesive multiscale framework for predicting mechanotransduction from organ-level biomechanics.

APA, Harvard, Vancouver, ISO, and other styles

23

Zhang, Bo. "Research on Biomechanical Simulation and Simulation of Badminton Splitting and Hanging Action Based on Edge Computing." Mobile Information Systems 2021 (April 27, 2021): 1–8. http://dx.doi.org/10.1155/2021/5527879.

Full text

Abstract:

Sports biomechanics refers to the science of the laws of mechanical motion produced in the process of biological movement. Its essence is to systematically and digitally reconstruct the fundamental attributes and characteristics of motion. At present, the research of sports biomechanics mainly focuses on the theoretical research of basic aspects and lacks the new technology of sports biomechanics digital simulation innovation and data measurement. This article takes the badminton chopping action as the research object and carries out biomechanical simulation and simulation research with the help of edge computing and genetic algorithm. First of all, this paper constructs a badminton chopping and hanging action system framework based on edge computing, so as to facilitate simulation and improve data transmission efficiency. Secondly, genetic algorithm is used in biomechanics simulation and simulation optimization and data analysis process. System testing and simulation verify the excellent performance of the biomechanical simulation of badminton chopping and hanging action established in this paper. The research will provide a reference for the academic circles to explore the field of sports biomechanics.

APA, Harvard, Vancouver, ISO, and other styles

24

Tung, Wen-Lin, Kuan-Yin Lai, Li-Chieh Kuo, I.-Ming Jou, and Fong-Chin Su. "BIOMECHANICAL EVALUATION OF TRIGGER FINGER FUNCTION(2B1 Orthopaedic & Rehabilitation Biomechanics IV)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2007.3 (2007): S146. http://dx.doi.org/10.1299/jsmeapbio.2007.3.s146.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Roberts, Cynthia J., and William J. Dupps. "Biomechanics of corneal ectasia and biomechanical treatments." Journal of Cataract & Refractive Surgery 40, no. 6 (June 2014): 991–98. http://dx.doi.org/10.1016/j.jcrs.2014.04.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Nikityuk, I. E., and S. V. Vissarionov. "Features of postural control in children with severe forms of idiopathic scoliosis." Perm Medical Journal 38, no. 3 (July 16, 2021): 76–87. http://dx.doi.org/10.17816/pmj38376-87.

Full text

Abstract:

Objective. The study of postural stability in children with severe degrees of idiopathic scoliosis and assessment of body balance disorders after surgical correction of spinal deformity. Material and methods. The study of 18 patients aged 1417 years with idiopathic scoliosis of the IIIIV degree with localization of the main arc according to Lenke I, III, V and VI was conducted. The vertical balance of the body was evaluated using a stabilometric platform MBN "Biomechanica" (LLC "MBN", Moscow) before and 910 days after the surgical correction of spinal deformity using transpedicular spinal systems. The results were compared with a stabilometric survey of 18 healthy children. Results. In patients with idiopathic scoliosis before surgery, a decrease in the stability of the vertical balance of the body, manifested by pronounced deviations from the nominal values of the stabilometric parameters, was revealed. The correlation analysis showed a pathologically strong relationship between the length L, the area S and the amplitude of fluctuations of the pressure center A in patients statokinesiograms compared to the group of healthy children. In the immediate postoperative period, the postural control system disorders are aggravated in patients. Conclusions. In children with severe idiopathic scoliosis, violations of the postural control system were revealed, which led to the formation of a suboptimal motor stereotype due to dysfunction of sensorimotor integration.

APA, Harvard, Vancouver, ISO, and other styles

27

Lee, Sang-Hie. "Hand biomechanics in skilled pianists playing a scale in thirds." Medical Problems of Performing Artists 25, no. 4 (December 1, 2010): 167–74. http://dx.doi.org/10.21091/mppa.2010.4034.

Full text

Abstract:

Pianists, who attend to the integral relationship of their particular musculoskeletal characteristics to the piano technique at hand, discover an efficient path to technical advancement and, consequently, to injury prevention. Thus, a study of pianist's hand biomechanics in relation to different piano techniques is highly relevant, as hand features may influence various techniques in different ways. This study addressed relationships between pianists' hand biomechanics and the performance of a scale in thirds, as a part of an ongoing series of studies examining relationships between hand biomechanics and performance data of primary techniques. The biomechanics of hand length and width, finger length, hand span, hand and arm weights, and ulnar deviation at the wrist were compared with tempo, articulation, and dynamic voicing (tone balance between two notes of the thirds). Pearson correlation analysis showed a positive association between ulnar deviation and tempo; the other biomechanical features showed no relationships with any of the performance criteria. Qualitative cross-sectional observation of individual profiles showed that experienced pianists perform with a higher degree of synchrony in two-note descent while pianists with organ training background play with a lesser degree of synchrony. All biomechanical features were closely related among one another with one exception: wrist ulnar deviation was not associated with any other biomechanical features; rather, data suggest possible negative associations. This study underscores the importance of wrist mobility in piano skills development. Further research using a complete set of prototype piano techniques and multiple-level pianist-subjects could provide substantive biomechanical information that may be used to develop efficient pedagogy and prevention strategies for playing-related injuries as well as rehabilitation.

APA, Harvard, Vancouver, ISO, and other styles

28

Karzilov, A. I. "The respiratory system biomechanical homeostasis and its maintenance mechanisms in normal conditions and at obstructive pulmonary diseases." Bulletin of Siberian Medicine 6, no. 1 (March 30, 2007): 13–38. http://dx.doi.org/10.20538/1682-0363-2007-1-13-38.

Full text

Abstract:

Parameters of breathing biomechanics in healthy persons (n = 20), patients with bronchial asthma (n = 30) and chronic obstruc-tive pulmonary disease (n = 30) are analyzed during electrical stimulation of the diaphragm. Methodology of homeostatic parame-ters searching and their classification is offered. Descriptive and comparative analyses are performed. Homeostatic parameters of biomechanics describing the condition of elastic and non -elastic properties of respiratory system, of respiratory muscles, of general pulmonary hysteresis, breathing regulation are differentiated. Basic homeostatic parameter is the ratio of inspiratory capacity to the lungs elastic recoil. The model of lungs with the biomechanical buffer and retractive-elastic- surfactant complex of lungs is offered. Biomechanical homeostasis idea of respiratory system as ability of an organism to support in dynamics balance normal and patho-logical conditions essentially important for preservation of respiratory system biomechanical parameters in admissible limits is for-mulated.

APA, Harvard, Vancouver, ISO, and other styles

29

Rajkumar, R. Vinodh. "Biomechanics Specialization in Aging Science and Research: Biomechanical Gerontology or Geronto-Biomechanics?" International Journal of Science and Healthcare Research 7, no. 3 (August 26, 2022): 191–99. http://dx.doi.org/10.52403/ijshr.20220727.

Full text

Abstract:

Aging process becomes a miserable phase of lifespan of various individuals. Gerontology and Geriatrics exclusively deal with researching complex human ailments pertinent to old age in order to overcome the challenges posed by several irreversible physiological changes occurring with aging. Inevitably, homeostasis declines and massive allostasis gets organized during aging to destroy the functional independence and survival potential. Controlling the rate of aging process is the only possible self-regulating strategy available to each individual to enjoy Morbidity-Attenuated Life Years (MALYs) but maintaining an optimal fitness competence to travel along the healthy aging trajectory is not effortlessly feasible regardless of the socioeconomic conditions. Fitness evaluations on different age groups enhances the understanding that the aging process might be a premature event among several individuals at an early age itself due to multifactorial reasons, and the biomechanical constraints displayed by such individuals expose the probable wide spectrum of postural and movement dysfunctions or disabilities of unhealthy older adults. Many such health-ruining erroneous postures and movements remain asymptomatic perilously, which when addressed during appropriate stage in life, could repair the impaired physical efficiency to sustain the abilities to counteract the effects of gravitational force on the body. The importance of early detection and rectification of such peculiar biomechanical dysfunctions should become an integral part of public health prophylaxis. The repertoire of biomechanical dysfunctions of premature unhealthy aging needs to be strongly merged with gerontology to strengthen the pursuits to retard unsuccessful aging and accomplish successful aging. Keywords: Biogerontology, Biomechanics, Ageing Trajectory, Compression of Morbidity, Polypharmacy, Comorbidities, Successful Aging, Unsuccessful Aging.

APA, Harvard, Vancouver, ISO, and other styles

30

Syaukani, Agam Akhmad, Vera Septi Sistiasih, Pungki Indarto, and Nur Subekti. "The biomechanics form and its application to assess student’s physical skills." Cypriot Journal of Educational Sciences 18, no. 1 (January 21, 2023): 71–88. http://dx.doi.org/10.18844/cjes.v18i1.7900.

Full text

Abstract:

One of the intended learning outcomes of Physical Education (PE) is for students to develop physical skills. Biomechanics can be used as a discipline to measure the level of physical skill. This study aimed to develop an assessment form to measure the level of physical skill. The movement principle of biomechanics was incorporated into an observation checklist form. The form is meant to help Physical Education Teachers (PET) qualitatively analyze students' physical skills using biomechanics. This study aligns with research and development model which conducted in three phases: need-analysis, development, and model efficiency test. The form was built with two main components: physical skill and biomechanical principles. Physical skill is related to standard movement patterns for a given sporting skill. The biomechanical principle lays the foundation for all movements. This research uses a qualitative approach. A total of 120 PET from 120 secondary schools were involved as subjects in this study. Interviews, observation, and questionnaire were used to collect the data. This research yielded the following result, first, there are problems with integrating biomechanics into an assessment of physical skill. Second, a biomechanics form is developed in the checklist-style observation form to help PET evaluate their students’ learning outcomes. Third, biomechanics form was practical to be used as a learning assessment tool because it met the criteria of validity, practicality, and effectiveness. Keywords: biomechanics assessment; observation checklist; physical education, physical skills

APA, Harvard, Vancouver, ISO, and other styles

31

Lin, Fang-Yang, Ren-Wen Ho, Hun-Ju Yu, I.-Hui Yang, Po-Chiung Fang, and Ming-Tse Kuo. "Impacts and Correlations on Corneal Biomechanics, Corneal Optical Density and Intraocular Pressure after Cataract Surgery." Diagnostics 14, no. 14 (July 18, 2024): 1557. http://dx.doi.org/10.3390/diagnostics14141557.

Full text

Abstract:

The study aimed to investigate the extended effects and interrelations of corneal biomechanics, corneal optical density (COD), corneal thickness (CT), and intraocular pressure (IOP) following cataract surgery. Sixteen eyes were analyzed prospectively. The Corneal Visualization Scheimpflug Technology (Corvis ST) device assessed corneal biomechanics, while the Pentacam AxL® (Pentacam) measured COD and CT. Postoperative data were collected around six months after surgery, with a subgroup analysis of data at nine months. The Pearson correlation was used to examine the relationship between surgical-induced changes in corneal biomechanics and COD. At six months, significant postoperative differences were observed in various biomechanical indices, including uncorrected IOP (IOPuct) and biomechanics-corrected IOP (bIOP). However, many indices lost statistical significance by the nine-month mark, suggesting the reversibility of postoperative corneal changes. Postoperative COD increased at the anterior layer of the 2−6 mm annulus and incision site. The changes in COD correlated with certain biomechanical indices, including maximal (Max) deformative amplitude (DA) and stiffness parameter (SP). In conclusion, despite significant immediate postoperative changes, corneal biomechanics, COD, and IOP experienced a gradual recovery process following cataract surgery. Clinicians should maintain vigilance for any unusual changes during the short-term observation period to detect abnormalities early.

APA, Harvard, Vancouver, ISO, and other styles

32

Hisatomi, Sayaka, Hisashi Naito, Takeshi Matsumoto, Eiji Tanaka, and Masao Tanaka. "Biomechanical Analysis of TMJ Soft Tissues under Asymmetric Jaw Movement(3D1 Dental Biomechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2007.3 (2007): S219. http://dx.doi.org/10.1299/jsmeapbio.2007.3.s219.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Pniakowska, Zofia, Piotr Jurowski, and Joanna Wierzbowska. "Corneal biomechanical changes after myopic and hyperopic laser vision correction." OphthaTherapy. Therapies in Ophthalmology 10, no. 1 (March 31, 2023): 64–68. http://dx.doi.org/10.24292/01.ot.250323.7.

Full text

Abstract:

Laser vision correction became a popular method of refractive error treatment. The laser vision correction techniques influence the corneal biomechanical properties including corneal hysteresis and corneal resistance factor. The ocular response analyzer and Corvis ST devices are used in clinical practice to measure the corneal biomechanics. Reasonable laser treatment planning, taking into account the impact on corneal biomechanics, may potentially improve the safety of the refractive procedures. Thicker caps in refractive lenticule extraction and thinner flaps in flap-related procedures promote better corneal biomechanics preservation. The myopic refractive treatment appears to have a greater effect on corneal biomechanics weakening than hyperopic correction.

APA, Harvard, Vancouver, ISO, and other styles

34

Salgado-Borges, José M., Cláudia Costa-Ferreira, Manuel Monteiro, and José Guilherme-Monteiro. "Refractive, Tomographic and Biomechanical Outcomes after Implantation of Ferrara ICRS in Keratoconus Patients." International Journal of Keratoconus and Ectatic Corneal Diseases 1, no. 1 (2012): 16–21. http://dx.doi.org/10.5005/jp-journals-10025-1003.

Full text

Abstract:

ABSTRACT Background Nowadays, ICRS are a step in the treatment of keratoconus. The purpose of this study was to evaluate the refractive effect and the tomographic and biomechanical parameters in keratoconus patients implanted with Ferrara ICRS, and their stability after 18 months. Materials and methods Twenty eyes of 20 keratoconus patients implanted with ICRS were evaluated. The average follow-up was 18 months. UDVA, CDVA, biomicroscopy, tomography (Pentacam) and biomechanics (ORA) of the cornea were evaluated before and after surgery. For the comparison of groups, the Wilcoxon test was used. Results The mean UDVA improved from 1.00 to 0.30 and the mean CDVA improved from 0.51 to 0.12; both were statistically significant (p = 0.0001). The average keratometry decreased from 50.7D to 47.5D (p = 0.0003), and the average astigmatism decreased from 5.5D to 3.5D (p = 0.0058). The mean CCT did not change significantly after surgery, but the mean TPP increased from 441.2 to 455.2 µm (p = 0.004). There was a significant reduction in the anterior cornea elevation, both the central (from 16.2-8.8; p = 0.0066) and the minimum (from–43.2 to −57.1; p = 0.0228). No significant change was found for posterior corneal elevation and for biomechanical parameters (hysteresis or CRF). Discussion There was a significant improvement of UDVA and CDVA after ICRS implantation, in keratoconic eyes. There was a significant and stable corneal flattening, and a decrease of the astigmatism. Corneal biomechanic parameters did not change. How to cite this article Salgado-Borges JM, Costa-Ferreira C, Monteiro M, Guilherme-Monteiro J, Torquetti L, Ferrara P, Ambrósio R Jr. Refractive, Tomographic and Biomechanical Outcomes after Implantation of Ferrara ICRS in Keratoconus Patients. Int J Keratoco Ectatic Corneal Dis 2012;1(1):16-21.

APA, Harvard, Vancouver, ISO, and other styles

35

Pniakowska, Zofia, Piotr Jurowski, and Joanna Wierzbowska. "Clinical Evaluation of Corneal Biomechanics following Laser Refractive Surgery in Myopic Eyes: A Review of the Literature." Journal of Clinical Medicine 12, no. 1 (December 28, 2022): 243. http://dx.doi.org/10.3390/jcm12010243.

Full text

Abstract:

The role of corneal biomechanics in laser vision correction (LVC) is currently being raised in the assessment of postoperative corneal ectasia risk. The aim of the paper was to evaluate the changes in corneal biomechanics after LVC procedures based on a systematic review of current studies. The results of a search of the literature in the PubMed, Science Direct, Google Scholar, and Web of Science databases were selected for final consideration according to the PRISMA 2020 flow diagram. Included in our review were 17 prospective clinical studies, with at least 6 months of follow-up time. Corneal biomechanical properties were assessed by Ocular Response Analyzer (ORA), or Corvis ST. The results of the study revealed the highest corneal biomechanics reduction after laser in situ keratomileusis (LASIK) followed by small incision lenticule extraction (SMILE) and surface procedures, such as photorefractive keratectomy (PRK) or laser-assisted sub-epithelial keratectomy (LASEK). In SMILE procedure treatment planning, the use of thicker caps preserves the corneal biomechanics. Similarly, reduction of flap thickness in LASIK surgery maintains the corneal biomechanical strength. Future prospective clinical trials with standardization of the study groups and surgical parameters are needed to confirm the results of the current review.

APA, Harvard, Vancouver, ISO, and other styles

36

Luiz Vancini, Rodrigo, Marília Santos Andrade, Claudio Andre Barbosa De Lira, and Thais Russomano. "Recent Advances in Biomechanics Research: Implications for Sports Performance and Injury Prevention." Health Nexus 1, no. 3 (2023): 7–20. http://dx.doi.org/10.61838/kman.hn.1.3.2.

Full text

Abstract:

This narrative review provides a comprehensive examination of the latest advancements in biomechanics and their implications for sports performance enhancement and injury prevention. Utilizing systematic literature search methodologies, the review draws on peer-reviewed articles, conference proceedings, and comprehensive review papers published between 2019 and 2023, sourced from databases such as PubMed, Google Scholar, and ScienceDirect. This article synthesizes findings from these sources to outline critical developments in the field of sports biomechanics. The review focuses on several key areas: technological innovations in biomechanics, biomechanical analysis of sports movements, injury prevention strategies, and the integration of biomechanical research into practical athletic training. Additionally, the review highlights the current challenges and limitations within the field and proposes future directions for research and application. By categorizing and analyzing recent literature into thematic areas, this review offers a detailed and structured overview of the state-of-the-art in sports biomechanics, emphasizing its significant impact on optimizing sports performance and reducing injury risks. The findings and discussions presented in this review are intended to inform researchers, practitioners, and athletes, contributing to the enhancement of sports science practices and athlete safety.

APA, Harvard, Vancouver, ISO, and other styles

37

Seeley, Matthew K., Seong Jun Son, Hyunsoo Kim, and J. Ty Hopkins. "Biomechanics Differ for Individuals With Similar Self-Reported Characteristics of Patellofemoral Pain During a High-Demand Multiplanar Movement Task." Journal of Sport Rehabilitation 30, no. 6 (August 1, 2021): 860–69. http://dx.doi.org/10.1123/jsr.2020-0220.

Full text

Abstract:

Context: Patellofemoral pain (PFP) is often categorized by researchers and clinicians using subjective self-reported PFP characteristics; however, this practice might mask important differences in movement biomechanics between PFP patients. Objective: To determine whether biomechanical differences exist during a high-demand multiplanar movement task for PFP patients with similar self-reported PFP characteristics but different quadriceps activation levels. Design: Cross-sectional design. Setting: Biomechanics laboratory. Participants: A total of 15 quadriceps deficient and 15 quadriceps functional (QF) PFP patients with similar self-reported PFP characteristics. Intervention: In total, 5 trials of a high-demand multiplanar land, cut, and jump movement task were performed. Main Outcome Measures: Biomechanics were compared at each percentile of the ground contact phase of the movement task (α = .05) between the quadriceps deficient and QF groups. Biomechanical variables included (1) whole-body center of mass, trunk, hip, knee, and ankle kinematics; (2) hip, knee, and ankle kinetics; and (3) ground reaction forces. Results: The QF patients exhibited increased ground reaction force, joint torque, and movement, relative to the quadriceps deficient patients. The QF patients exhibited: (1) up to 90, 60, and 35 N more vertical, posterior, and medial ground reaction force at various times of the ground contact phase; (2) up to 4° more knee flexion during ground contact and up to 4° more plantarflexion and hip extension during the latter parts of ground contact; and (3) up to 26, 21, and 48 N·m more plantarflexion, knee extension, and hip extension torque, respectively, at various times of ground contact. Conclusions: PFP patients with similar self-reported PFP characteristics exhibit different movement biomechanics, and these differences depend upon quadriceps activation levels. These differences are important because movement biomechanics affect injury risk and athletic performance. In addition, these biomechanical differences indicate that different therapeutic interventions may be needed for PFP patients with similar self-reported PFP characteristics.

APA, Harvard, Vancouver, ISO, and other styles

38

Hewett, Timothy E., Kevin R. Ford, Yingying Y. Xu, Jane Khoury, and Gregory D. Myer. "Effectiveness of Neuromuscular Training Based on the Neuromuscular Risk Profile." American Journal of Sports Medicine 45, no. 9 (April 25, 2017): 2142–47. http://dx.doi.org/10.1177/0363546517700128.

Full text

Abstract:

Background: The effects of targeted neuromuscular training (TNMT) on movement biomechanics associated with the risk of anterior cruciate ligament (ACL) injuries are currently unknown. Purpose/Hypotheses: To determine the effectiveness of TNMT specifically designed to increase trunk control and hip strength. The hypotheses were that (1) TNMT would decrease biomechanical and neuromuscular factors related to an increased ACL injury risk and (2) TNMT would decrease these biomechanical and neuromuscular factors to a greater extent in athletes identified as being at a high risk for future ACL injuries. Study Design: Controlled laboratory study. Methods: Female athletes who participated in jumping, cutting, and pivoting sports underwent 3-dimensional biomechanical testing before the season and after completing TNMT. During testing, athletes performed 3 different types of tasks: (1) drop vertical jump, (2) single-leg drop, and (3) single-leg cross drop. Analysis of covariance was used to examine the treatment effects of TNMT designed to enhance core and hip strength on biomechanical and neuromuscular characteristics. Differences were also evaluated by risk profile. Differences were considered statistically significant at P < .05. Results: TNMT significantly increased hip external rotation moments and moment impulses, increased peak trunk flexion, and decreased peak trunk extension. Athletes with a high risk before the intervention (risk profile III) had a more significant treatment effect of TNMT than low-risk groups (risk profiles I and II). Conclusion: TNMT significantly improved proximal biomechanics, including increased hip external rotation moments and moment impulses, increased peak trunk flexion, and decreased peak trunk extension. TNMT that focuses exclusively on proximal leg and trunk risk factors is not, however, adequate to induce significant changes in frontal-plane knee loading. Biomechanical changes varied across the risk profile groups, with higher risk groups exhibiting greater improvements in their biomechanics.

APA, Harvard, Vancouver, ISO, and other styles

39

Fice, Jason B., Gunter P. Siegmund, and Jean-Sébastien Blouin. "Neck muscle biomechanics and neural control." Journal of Neurophysiology 120, no. 1 (July 1, 2018): 361–71. http://dx.doi.org/10.1152/jn.00512.2017.

Full text

Abstract:

The mechanics, morphometry, and geometry of our joints, segments, and muscles are fundamental biomechanical properties intrinsic to human neural control. The goal of our study was to investigate whether the biomechanical actions of individual neck muscles predict their neural control. Specifically, we compared the moment direction and variability produced by electrical stimulation of a neck muscle (biomechanics) to the preferred activation direction and variability (neural control). Subjects sat upright with their head fixed to a six-axis load cell and their torso restrained. Indwelling wire electrodes were placed into the sternocleidomastoid (SCM), splenius capitis (SPL), and semispinalis capitis (SSC) muscles. The electrically stimulated direction was defined as the moment direction produced when a current (2–19 mA) was passed through each muscle’s electrodes. Preferred activation direction was defined as the vector sum of the spatial tuning curve built from root mean squared electromyogram when subjects produced isometric moments at 7.5% and 15% of their maximum voluntary contraction (MVC) in 26 three-dimensional directions. The spatial tuning curves at 15% MVC were well defined (unimodal, P < 0.05), and their preferred directions were 23°, 39°, and 21° different from their electrically stimulated directions for the SCM, SPL, and SSC, respectively ( P < 0.05). Intrasubject variability was smaller in electrically stimulated moment directions compared with voluntary preferred directions, and intrasubject variability decreased with increased activation levels. Our findings show that the neural control of neck muscles is not based solely on optimizing individual muscle biomechanics but, as activation increases, biomechanical constraints in part dictate the activation of synergistic neck muscles. NEW & NOTEWORTHY Biomechanics are an intrinsic part of human neural control. In this study, we found that the biomechanics of individual neck muscles cannot fully predict their neural control. Consequently, physiologically based computational neck muscle controllers cannot calculate muscle activation schemes based on the isolated biomechanics of muscles. Furthermore, by measuring biomechanics we showed that the intrasubject variability of the neural control was lower for electrical vs. voluntary activation of the neck muscles.

APA, Harvard, Vancouver, ISO, and other styles

40

Petrov, Sergey Yur'yevich, Nataliya Nikolaevna Podgornaya, Anna Eduardovna Aslamazova, and Dar'ya Maksimovna Safonova. "Biomechanical studies of the iris and the trabecular meshwork." Ophthalmology journal 8, no. 1 (March 15, 2015): 69–78. http://dx.doi.org/10.17816/ov2015169-78.

Full text

Abstract:

The article presents a literature review of the latest research in the field of ocular biomechanics with an accent on the role of biomechanical properties of anatomical structures in the development of ocular pathologies. Close attention is paid to biomechanical properties of the iris, the study of its structure and functioning in representatives of different races, as well as its role in anterior eye chamber angle closure and the pathogenesis of angle-closure glaucoma. Experimental and clinical researches of trabecular meshwork biomechanics and modern outlooks on its structure characteristics are described. The review provides information on theoretical developments and practical implications of the development of a new class of local hypotensive drugs that influence the trabecular meshwork tonus (Rho-kinase inhibitors).

APA, Harvard, Vancouver, ISO, and other styles

41

Nagelli, Christopher, Samuel Wordeman, Stephanie Di Stasi, Joshua Hoffman, Tiffany Marulli, and Timothy E. Hewett. "Biomechanical Deficits at the Hip in Athletes With ACL Reconstruction Are Ameliorated With Neuromuscular Training." American Journal of Sports Medicine 46, no. 11 (August 3, 2018): 2772–79. http://dx.doi.org/10.1177/0363546518787505.

Full text

Abstract:

Background: The efficacy of a neuromuscular training (NMT) program to ameliorate known hip biomechanical risk factors for athletes with anterior cruciate ligament reconstruction (ACLR) is currently unknown. Purpose/Hypothesis: The purpose was to quantify the effects of an NMT program on hip biomechanics among athletes with ACLR and to compare posttraining hip biomechanics with a control group. The hypotheses were that known hip biomechanical risk factors of anterior cruciate ligament (ACL) injury would be significantly reduced among athletes with ACLR after the NMT program and that posttraining hip biomechanics between the ACLR and control cohorts would not differ. Study Design: Controlled laboratory study. Methods: Twenty-eight athletes (n = 18, ACLR; n = 10, uninjured) completed a 12-session NMT program. Biomechanical evaluation of a jump-landing task was done before and after completion of the program. Repeated measures analysis of variance was performed to understand the effect of NMT within the ACLR cohort. Two-way analysis of variance was used to compare both groups. Post hoc testing was done for significant interactions. Hip biomechanical variables at initial contact are reported. Results: The athletes with ACLR who completed the NMT program had a significant session × limb interaction ( P = .01) for hip external rotation moment and a significant main effect of session for hip flexion angle ( P = .049) and moment ( P < .001). There was a significant change for the involved ( P = .04; 528% increase) and uninvolved ( P = .04; 57% decrease) limbs from pre- to posttraining for hip rotation moment. The ACLR cohort had an increase in hip flexion angle (14% change) and a decrease in hip flexion moment (65% change) from pre- to posttraining. Posttraining comparison for these same hip biomechanical variables of interest revealed no significant interactions ( P > .05) between the ACLR and control cohorts. There was a significant main effect of group ( P = .02) for hip flexion angle, as the ACLR cohort demonstrated greater hip flexion angle than that of the control group. Conclusion: For athletes with ACLR, hip biomechanical measures of ACL injury risk show significant improvements after completion of an NMT program. Clinical Relevance: Athletes with ACLR who are participating in an NMT program may ameliorate known hip biomechanical risk factors for an ACL injury.

APA, Harvard, Vancouver, ISO, and other styles

42

Lukšys, Donatas, and Julius Griškevičius. "QUANTITATIVE ASSESSMENT OF DANCE THERAPY INFULENCE ON THE PARKINSON’S DISEASE PATIENTS’ LOWER LIMB BIOMECHANICS / ŠOKIŲ ĮTAKA APATINIŲ GALŪNIŲ BIOMECHANIKAI SERGANT PARKINSONO LIGA." Mokslas – Lietuvos ateitis 8, no. 6 (January 18, 2017): 583–86. http://dx.doi.org/10.3846/mla.2016.978.

Full text

Abstract:

Parkinson’s disease – progressive neurologic disorder that damages a variety of motor function and reduces the quality of life. Patients with PD are subject to various physical therapy exercises, but recently is applied more often the dance – music therapy. This study aims assessing the therapeutic effect of the modified Lindy Hop dance therapy on lower extremity biomechanics. The experimental study was performed using inertial sensors that registered lower extremity biomechanical parameters during gait. Several spatio-temporal parameters of lower limb were calculated and were found statistically significant between groups, which allows quantifying the influence of dance therapy. Parkinsono liga (PL) – progresuojantis neurologinis sutrikimas, kuris pažeidžia įvairias motorines funkcijas ir sumažina gyvenimo kokybę. Sergant PL, taikomos įvairios fizinių pratimų terapijos, bet paskutiniu metu dažniau taikoma šokių – muzikos – terapija. Eksperimentinio tyrimo metu buvo naudojami inerciniai jutikliai, siekiant registruoti apatinių galūnių biomechaninius parametrus eisenos metu. Šio straipsnio tikslas – įvertinti modifikuotos lindihopo šokių terapijos įtaką apatinių galūnių biomechanikai. Buvo apskaičiuoti apatinių galūnių kinematiniai parametrai ir surasti statistiškai reikšmingi skirtumai tarp grupių ir grupių viduje, kurie leidžia kiekybiškai įvertinti šokių įtaką.

APA, Harvard, Vancouver, ISO, and other styles

43

King, Oisín, Ilona Sunyovszki, and Cesare M. Terracciano. "Vascularisation of pluripotent stem cell–derived myocardium: biomechanical insights for physiological relevance in cardiac tissue engineering." Pflügers Archiv - European Journal of Physiology 473, no. 7 (April 14, 2021): 1117–36. http://dx.doi.org/10.1007/s00424-021-02557-8.

Full text

Abstract:

AbstractThe myocardium is a diverse environment, requiring coordination between a variety of specialised cell types. Biochemical crosstalk between cardiomyocytes (CM) and microvascular endothelial cells (MVEC) is essential to maintain contractility and healthy tissue homeostasis. Yet, as myocytes beat, heterocellular communication occurs also through constantly fluctuating biomechanical stimuli, namely (1) compressive and tensile forces generated directly by the beating myocardium, and (2) pulsatile shear stress caused by intra-microvascular flow. Despite endothelial cells (EC) being highly mechanosensitive, the role of biomechanical stimuli from beating CM as a regulatory mode of myocardial-microvascular crosstalk is relatively unexplored. Given that cardiac biomechanics are dramatically altered during disease, and disruption of myocardial-microvascular communication is a known driver of pathological remodelling, understanding the biomechanical context necessary for healthy myocardial-microvascular interaction is of high importance. The current gap in understanding can largely be attributed to technical limitations associated with reproducing dynamic physiological biomechanics in multicellular in vitro platforms, coupled with limited in vitro viability of primary cardiac tissue. However, differentiation of CM from human pluripotent stem cells (hPSC) has provided an unlimited source of human myocytes suitable for designing in vitro models. This technology is now converging with the diverse field of tissue engineering, which utilises in vitro techniques designed to enhance physiological relevance, such as biomimetic extracellular matrix (ECM) as 3D scaffolds, microfluidic perfusion of vascularised networks, and complex multicellular architectures generated via 3D bioprinting. These strategies are now allowing researchers to design in vitro platforms which emulate the cell composition, architectures, and biomechanics specific to the myocardial-microvascular microenvironment. Inclusion of physiological multicellularity and biomechanics may also induce a more mature phenotype in stem cell–derived CM, further enhancing their value. This review aims to highlight the importance of biomechanical stimuli as determinants of CM-EC crosstalk in cardiac health and disease, and to explore emerging tissue engineering and hPSC technologies which can recapitulate physiological dynamics to enhance the value of in vitro cardiac experimentation.

APA, Harvard, Vancouver, ISO, and other styles

44

Torres Aguila, Ana Margarita, and Aliuska Suárez Calderón. "Biomechanics and anthropometry in karate-do. current vision of applied sports sciences." International Journal of Family & Community Medicine 7, no. 2 (2023): 49–54. http://dx.doi.org/10.15406/ijfcm.2023.07.00311.

Full text

Abstract:

The objective of the research was to analyze the physical, somatotypical and motor conditions of the karate fighters of the EIDE of Cienfuegos through anthropometric and biomechanical studies to increase performance and prevent injuries in the years 2021 and 2022. The primary source of information was the base of data available in the Department of Kinanthropometry of the Institute of Sports Medicine of Cienfuegos. The results show that there is a need to delve into Anthropometry and sciences applied to sports, particularly those linked to Sports biomechanics. However, the publications referring to Martial Arts, particularly Karate-do, are still limited. The objective of this review is to contextualize Anthropometry and Sports Biomechanics as necessary tools to focus on the limitations of the Mawashi Geri technique, based on the relationship between anthropometric and biomechanical studies, the technique can be perfected and the risk of injuries reduced. Therefore, it is necessary to find a proposal that provides new anthropometric data that can be used for biomechanical studies and medical control of sports training in karate fighters from Cienfuegos.

APA, Harvard, Vancouver, ISO, and other styles

45

Li, Fanshu, Kehao Wang, and Ziyuan Liu. "In Vivo Biomechanical Measurements of the Cornea." Bioengineering 10, no. 1 (January 15, 2023): 120. http://dx.doi.org/10.3390/bioengineering10010120.

Full text

Abstract:

In early corneal examinations, the relationships between the morphological and biomechanical features of the cornea were unclear. Although consistent links have been demonstrated between the two in certain cases, these are not valid in many diseased states. An accurate assessment of the corneal biomechanical properties is essential for understanding the condition of the cornea. Studies on corneal biomechanics in vivo suggest that clinical problems such as refractive surgery and ectatic corneal disease are closely related to changes in biomechanical parameters. Current techniques are available to assess the mechanical characteristics of the cornea in vivo. Accordingly, various attempts have been expended to obtain the relevant mechanical parameters from different perspectives, using the air-puff method, ultrasound, optical techniques, and finite element analyses. However, a measurement technique that can comprehensively reflect the full mechanical characteristics of the cornea (gold standard) has not yet been developed. We review herein the in vivo measurement techniques used to assess corneal biomechanics, and discuss their advantages and limitations to provide a comprehensive introduction to the current state of technical development to support more accurate clinical decisions.

APA, Harvard, Vancouver, ISO, and other styles

46

Burns, Geoffrey T., Kenneth M. Kozloff, and Ronald F. Zernicke. "Biomechanics of Elite Performers: Economy and Efficiency of Movement." Kinesiology Review 9, no. 1 (February 1, 2020): 21–30. http://dx.doi.org/10.1123/kr.2019-0058.

Full text

Abstract:

Movement is essential to the human experience, and efficient biomechanics facilitate effective action across the breadth of tasks one encounters in life. The concept of movement efficiency has been investigated and explored through a variety of means including biomechanical modeling, simulation, and experimental manipulation. Observations of elite performers for a given movement task serve as an additional line of insight into efficiency, as their movements have been driven toward optimization via competitive pressure. The authors first discuss the concept of efficiency in biomechanics from a qualitative perspective and the broad tools with which we explore it. They then highlight biomechanical investigations of elite performers and their contributions to our understanding of efficiency. Examples from various classes of movements illustrate unique insights of the elite performers in informing our understanding of movement efficiency.

APA, Harvard, Vancouver, ISO, and other styles

47

Chieh, Hsiao-Feng, Chien-Ju Lin, Li-Chieh Kuo, I.-Ming Jou, and Fong-Chin Su. "GS6-1 BIOMECHANICAL ASSESSMENT OF COLLAGENASE-INDUCED ACHILLES TENDINOPATHY IN RATS(GS6: Musculoskeletal Biomechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2015.8 (2015): 171. http://dx.doi.org/10.1299/jsmeapbio.2015.8.171.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Sibakin, D. D., V. A. Breev, and E. G. Solodkova. "Analysis of keratopographic and biomechanical corneal indicators with evaluation of the impact of diagnostic results on myopic refraction patient management tactics." Modern technologies in ophtalmology, no. 2 (June 15, 2021): 196–99. http://dx.doi.org/10.25276/2312-4911-2021-2-196-199.

Full text

Abstract:

Purpose. To analyse keratopographic and biomechanical corneal indicators with the diagnostic results assessment of the influence on the treatment tactics of myopic refraction patient. Materials and methods. Keratotopographic and biomechanical parameters of the cornea in a patient with mild myopia were evaluated. Results. The Belin/Ambrosio (Enchanced Ectasia Display) - BAD keratoconus screening program was used on Pentacam HR, which did not reveal corneal pathology. According to the results of CBI (Corvis biomechanical index) on Corvis ST (OD - 0.61, OS - 0.48), that was indicating poor corneal biomechanical properties and a high risk of keratectasia development. Conclusion. Ophthalmic examination, using The Corvis ST (Oculus, Germany) biomechanical measurements, makes possible to reveal with greater sensitivity subclinical signs of a keratectatic process at the pre-clinical stage of development. Key words: keratotopography, corneal biomechanics, keratoconus.

APA, Harvard, Vancouver, ISO, and other styles

49

Huang, Xiaowei, Andreas K. Nussler, Marie K. Reumann, Peter Augat, Maximilian M. Menger, Ahmed Ghallab, Jan G. Hengstler, Tina Histing, and Sabrina Ehnert. "Contribution to the 3R Principle: Description of a Specimen-Specific Finite Element Model Simulating 3-Point-Bending Tests in Mouse Tibiae." Bioengineering 9, no. 8 (July 25, 2022): 337. http://dx.doi.org/10.3390/bioengineering9080337.

Full text

Abstract:

Bone mechanical properties are classically determined by biomechanical tests, which normally destroy the bones and disable further histological or molecular analyses. Thus, obtaining biomechanical data from bone usually requires an additional group of animals within the experimental setup. Finite element models (FEMs) may non-invasively and non-destructively simulate mechanical characteristics based on material properties. The present study aimed to establish and validate an FEM to predict the mechanical properties of mice tibiae. The FEM was established based on µCT (micro-Computed Tomography) data of 16 mouse tibiae. For validating the FEM, simulated parameters were compared to biomechanical data obtained from 3-point bending tests of the identical bones. The simulated and the measured parameters correlated well for bending stiffness (R2 = 0.9104, p < 0.0001) and yield displacement (R2 = 0.9003, p < 0.0001). The FEM has the advantage that it preserves the bones’ integrity, which can then be used for other analytical methods. By eliminating the need for an additional group of animals for biomechanical tests, the established FEM can contribute to reducing the number of research animals in studies focusing on bone biomechanics. This is especially true when in vivo µCT data can be utilized where multiple bone scans can be performed with the same animal at different time points. Thus, by partially replacing biomechanical experiments, FEM simulations may reduce the overall number of animals required for an experimental setup investigating bone biomechanics, which supports the 3R (replace, reduce, and refine) principle.

APA, Harvard, Vancouver, ISO, and other styles

50

Schmitz, Randy J., John C. Cone, Timothy J. Copple, Robert A. Henson, and Sandra J. Shultz. "Lower-Extremity Biomechanics and Maintenance of Vertical-Jump Height During Prolonged Intermittent Exercise." Journal of Sport Rehabilitation 23, no. 4 (November 2014): 319–29. http://dx.doi.org/10.1123/jsr.2013-0065.

Full text

Abstract:

Context:Potential biomechanical compensations allowing for maintenance of maximal explosive performance during prolonged intermittent exercise, with respect to the corresponding rise in injury rates during the later stages of exercise or competition, are relatively unknown.Objective:To identify lower-extremity countermovement-jump (CMJ) biomechanical factors using a principal-components approach and then examine how these factors changed during a 90-min intermittent-exercise protocol (IEP) while maintaining maximal jump height.Design:Mixed-model design.Setting:Laboratory.Participants:Fifty-nine intermittent-sport athletes (30 male, 29 female) participated in experimental and control conditions.Interventions:Before and after a dynamic warm-up and every 15 min during the 1st and 2nd halves of an individually prescribed 90-min IEP, participants were assessed on rating of perceived exertion, sprint/cut speed, and 3-dimensional CMJ biomechanics (experimental). On a separate day, the same measures were obtained every 15 min during 90 min of quiet rest (control).Main Outcome Measures:Univariate piecewise growth models analyzed progressive changes in CMJ performance and biomechanical factors extracted from a principal-components analysis of the individual biomechanical dependent variables.Results:While CMJ height was maintained during the 1st and 2nd halves, the body descended less and knee kinetic and energetic magnitudes decreased as the IEP progressed.Conclusions:The results indicate that vertical-jump performance is maintained along with progressive biomechanical changes commonly associated with decreased performance. A better understanding of lower-extremity biomechanics during explosive actions in response to IEP allows us to further develop and individualize performance training programs.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Biomechanica'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles