Academic literature on the topic 'Biomechanical energy'

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Journal articles on the topic "Biomechanical energy"

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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.

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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.
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Wan, Linwei, Haomin Zheng, and Deyuan Kong. "Methodological innovation in government environmental auditing through biomechanical principles: An approach to environmental impact performance evaluation." Molecular & Cellular Biomechanics 22, no. 4 (March 20, 2025): 1704. https://doi.org/10.62617/mcb1704.

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Biomechanical principles have been widely applied in multiple industries in recent years, providing new perspectives for evaluating and analyzing complex systems. In this research, the feasibility of integrating biomechanical principles into government environmental performance audits to develop a new approach to environmental impact assessment is explored. By analyzing core principles in biomechanics such as mechanical equilibrium, energy conservation, and biological adaptability, it helps to propose a series of evaluation frameworks and indicators based on biomechanical principles to quantify the key factors in environmental performance audits. The research findings indicate that the application of biomechanical principles in government environmental performance audits can not only enhance the accuracy and scientific nature of the assessment but also offer strong support for environmental protection and sustainable development, highlighting the superiority of incorporating biomechanical knowledge into environmental auditing.
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Post, Andrew, T. Blaine Hoshizaki, Michael D. Gilchrist, David Koncan, Lauren Dawson, Wesley Chen, Andrée-Anne Ledoux, Roger Zemek, and _. _. "A comparison in a youth population between those with and without a history of concussion using biomechanical reconstruction." Journal of Neurosurgery: Pediatrics 19, no. 4 (April 2017): 502–10. http://dx.doi.org/10.3171/2016.10.peds16449.

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OBJECTIVE Concussion is a common topic of research as a result of the short- and long-term effects it can have on the affected individual. Of particular interest is whether previous concussions can lead to a biomechanical susceptibility, or vulnerability, to incurring further head injuries, particularly for youth populations. The purpose of this research was to compare the impact biomechanics of a concussive event in terms of acceleration and brain strains of 2 groups of youths: those who had incurred a previous concussion and those who had not. It was hypothesized that the youths with a history of concussion would have lower-magnitude biomechanical impact measures than those who had never suffered a previous concussion. METHODS Youths who had suffered a concussion were recruited from emergency departments across Canada. This pool of patients was then separated into 2 categories based on their history of concussion: those who had incurred 1 or more previous concussions, and those who had never suffered a concussion. The impact event that resulted in the brain injury was reconstructed biomechanically using computational, physical, and finite element modeling techniques. The output of the events was measured in biomechanical parameters such as energy, force, acceleration, and brain tissue strain to determine if those patients who had a previous concussion sustained a brain injury at lower magnitudes than those who had no previously reported concussion. RESULTS The results demonstrated that there was no biomechanical variable that could distinguish between the concussion groups with a history of concussion versus no history of concussion. CONCLUSIONS The results suggest that there is no measureable biomechanical vulnerability to head impact related to a history of concussions in this youth population. This may be a reflection of the long time between the previous concussion and the one reconstructed in the laboratory, where such a long period has been associated with recovery from injury.
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Zhang, Shuya. "Biomechanics-inspired utilization 5G multimedia for intelligent title recommendations in low carbon smart libraries through collaborative filtering algorithms." Molecular & Cellular Biomechanics 22, no. 4 (March 17, 2025): 925. https://doi.org/10.62617/mcb925.

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With the popularization of e-readers, electronic reading rooms, digital libraries, and other new ways of reading in libraries and society, libraries have also entered a new stage of development because of “low-carbon” construction. The low-carbon development of intelligent libraries reduces the application of traditional literature carriers, increases the popularity and application of modern equipment, makes the replacement of paper materials, and reduces its own energy consumption. To achieve personalized recommendations in the lending system, this paper, inspired by biomechanical concepts, constructs a tree intelligent recommendation system via a collaborative filtering algorithm. This system functions like a neural network in a biological system, processing and analyzing data to make informed decisions. By verifying the system with actual borrowing data of students, it proves effective, much like how a biomechanical adaptation is tested and validated in nature. This approach offers a valuable reference for intelligent book management in universities, aligning library operations with the principles of efficient resource utilization and adaptation seen in the biomechanical world. book management in universities. In addition to these advancements, integrating biomechanics into the design and operation of smart libraries can enhance user experience and engagement. Understanding the biomechanics of reading—such as posture, hand movements, and eye tracking—can inform the development of ergonomic reading spaces and devices. For instance, optimizing seating arrangements and reading environments based on biomechanical principles can reduce physical strain and improve comfort for users. Moreover, incorporating biomechanical feedback into the recommendation system could personalize user interactions further. By analyzing how different users engage with reading materials—considering factors like reading speed, preferred formats, and physical interactions with devices—libraries can refine their recommendation algorithms. This approach not only enhances the effectiveness of title recommendations but also promotes a healthier reading experience, aligning with the low-carbon goals of reducing physical strain and energy consumption associated with inefficient reading practices.
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Yu, Bo. "Practical research on wetland ecosystem services and traditional plant protection in the biosphere reserves of Yunnan: A biomechanics perspective." Molecular & Cellular Biomechanics 22, no. 3 (February 13, 2025): 817. https://doi.org/10.62617/mcb817.

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Yunnan’s wetland ecosystems are essential for ecological services like water conservation and biodiversity sustenance. Analogously to biological systems in biomechanics, they are subject to diverse forces. Here, natural and anthropogenic factors act as external stimuli. Utilizing multi-source data, an evaluation index system for ecological service functions was established, similar to characterizing the biomechanical properties of an organism. Analyzing wetland dynamics and traditional plant resources is comparable to studying the structural and functional alterations of a biomechanical entity. The growth in wetland area and vegetation coverage can be regarded as a response to favorable biomechanical conditions, with the water conservation function as a crucial biomechanical attribute maintaining the system’s stability, much like a key structural element in a biological tissue. However, agricultural pollution and climate change pose challenges, acting as adverse biomechanical stressors. Agricultural pollution is like a harmful agent disrupting the normal biomechanical processes, and climate change resembles a fluctuating external force. To address these, strategies are proposed. Enhancing ecological compensation is similar to providing supplementary biomechanical energy to repair and strengthen the system. Optimizing land use structures is akin to adjusting the spatial organization of biomechanical components for enhanced efficiency. Improving management policy execution is like strengthening the regulatory biomechanical mechanisms. Through these, sustainable management of wetland resources and the enhancement of ecological service functions can be achieved, similar to restoring and optimizing the biomechanical health and functionality of a living system, ensuring the long-term viability and performance of Yunnan's wetland ecosystems in the face of complex environmental pressures.
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Cos, Ignasi, Nicolas Bélanger, and Paul Cisek. "The influence of predicted arm biomechanics on decision making." Journal of Neurophysiology 105, no. 6 (June 2011): 3022–33. http://dx.doi.org/10.1152/jn.00975.2010.

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There is considerable debate on the extent to which biomechanical properties of movements are taken into account before and during voluntary movements. For example, while several models have described reach planning as primarily kinematic, some studies have suggested that implicit knowledge about biomechanics may also exert some influence on the planning of reaching movements. Here, we investigated whether decisions about reaching movements are influenced by biomechanical factors and whether these factors are taken into account before movement onset. To this end, we designed an experimental paradigm in which humans made free choices between two potential reaching movements where the options varied in path distance as well as biomechanical factors related to movement energy and stability. Our results suggest that the biomechanical properties of potential actions strongly influence the selection between them. In particular, in our task, subjects preferred movements whose final trajectory was better aligned with the major axis of the arm's mobility ellipse, even when the launching properties were very similar. This reveals that the nervous system can predict biomechanical properties of potential actions before movement onset and that these predictions, in addition to purely abstract criteria, may influence the decision-making process.
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Liu, Mingyi, Cherice Hill, Robin Queen, and Lei Zuo. "A lightweight wearable biomechanical energy harvester." Smart Materials and Structures 30, no. 7 (June 16, 2021): 075032. http://dx.doi.org/10.1088/1361-665x/ac03c3.

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Gao, Jinxia, and Tian Zhou. "Biomechanical and cellular factors affecting the speed and accuracy of tennis serve." Molecular & Cellular Biomechanics 22, no. 4 (March 19, 2025): 1275. https://doi.org/10.62617/mcb1275.

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This study discusses the biomechanical and cellular factors that affect the speed and accuracy of tennis service. By combining biomechanical characteristics (such as power chain, hitting point control, ground reaction, etc.) with cellular factors (such as muscle fiber type, energy metabolism efficiency, neuromuscular coordination ability, etc.), this paper analyzes the key mechanism of improving serve performance. The results show that the collaborative optimization of biomechanics and cellular factors has a significant effect on improving the service speed and accuracy. The research adopts measured data, literature review, and motion sensor data and draws the conclusion that high-level athletes are significantly better than ordinary athletes in various indexes, which provides scientific guidance for tennis training.
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Lv, Xiaoping. "Innovation in classroom interaction mode of business English teaching driven by biomechanics and data analysis." Molecular & Cellular Biomechanics 22, no. 4 (March 5, 2025): 1626. https://doi.org/10.62617/mcb1626.

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This study investigates the application of biomechanics-inspired principles to optimize classroom interaction models in business English education, with a focus on the interplay between physiological dynamics and learning performance. By integrating biomechanical frameworks for analyzing human physiological responses, and cardiovascular adaptability, this research establishes a data-driven teaching model to enhance educational outcomes. Using experimental research methods, 120 business English majors from a university were studied over a 16-week teaching experiment to systematically analyze the biomechanical correlates of learning efficiency and classroom engagement. The research found that the biomechanics-informed teaching model significantly improved students’ physiological adaptability and cognitive performance. The experimental group showed improvements in attention levels (α-wave energy values) from 10.2 ± 2.3 μV to 12.6 ± 2.1 μV, stress indices decreased from 7.8 ± 1.2 to 5.2 ± 0.9, and heart rate variability (HRV) SDNN values increased from 42.3 ± 8.5 ms to 54.6 ± 7.8 ms. In terms of classroom interaction quality, the proportion of quality interactions increased from 35.6 ± 4.8% to 68.4 ± 5.2%. Regarding business English competency development, the experimental group’s business communication skills improved from 71.3 ± 7.8 to 87.6 ± 6.5 points (an improvement rate of 2.9%), while cross-cultural business competency increased from 72.1 ± 7.6 to 88.2 ± 6.3 points (an improvement rate of 22.3%). The results indicate that the biological data-driven teaching model can effectively optimize classroom interaction quality and enhance business English teaching effectiveness. By treating learning interactions as a biomechanical system governed by energy expenditure, stress-strain balance, and adaptive feedback loops, we provide a novel paradigm for understanding and improving pedagogical efficacy. The results highlight the potential of biomechanics to bridge educational technology and human performance science, offering actionable strategies for curriculum design and teacher training. This innovative model provides new insights and methods for business English teaching reform while offering practical references for educational technology innovation.
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Zhang, Yunshu, and Yue Wei. "Low-carbon transformation and ecological safeguarding in the Yellow River Basin: Integrating biomechanical and biological insights." Molecular & Cellular Biomechanics 21, no. 2 (November 6, 2024): 408. http://dx.doi.org/10.62617/mcb.v21i2.408.

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This research, titled “Low-carbon transformation and ecological safeguarding in the Yellow River Basin: Integrating biomechanical and biological insights” explores the interplay between economic activities, land use changes, and environmental impact. Through regression analyses and assessments of land use alterations, the study identifies significant provincial variations in factors influencing carbon emissions. In addition to the socio-economic factors, the research incorporates insights from biomechanics and biology, drawing parallels between the ecological systems of the Yellow River Basin and biological processes such as energy efficiency and resource allocation in living organisms. For instance, just as organisms optimize energy usage and adapt to external stressors, the proposed low-carbon strategies aim to optimize resource use and improve the resilience of the basin’s ecosystem. Proposed strategies for low-carbon transformation provide a practical roadmap for sustainable development, informed by biological principles like ecological balance, regeneration, and the importance of maintaining biodiversity. These principles reflect how biomechanical systems, such as musculoskeletal structures, balance energy expenditure and repair to maintain functionality under strain, similar to how ecosystems must manage resource cycles to withstand environmental stressors. The integration of socio-economic indicators, alongside biological and biomechanical insights, underscores the need for region-specific policies that consider not only economic factors but also the natural regenerative capacities of the ecosystem. The study suggests that, like biological systems that repair and adapt to maintain homeostasis, the Yellow River Basin’s ecological processes can be guided by sustainable management practices to ensure long-term resilience and stability. In conclusion, the research contributes valuable insights to the global discourse on balancing economic growth with ecological preservation in the ecologically vital Yellow River Basin, highlighting how the integration of biomechanical and biological principles can enhance both ecological safeguarding and low-carbon transformation strategies.
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Dissertations / Theses on the topic "Biomechanical energy"

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Denault, Sebastian Ramirez. "Evaluation of smart-fabric approach to biomechanical energy harvesting." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92178.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 35-37).
This thesis evaluates the proposed use of piezoelectric energy harvesting methods as a power source for light-up sneakers. Light-up sneakers currently marketed for purposes of pedestrian visibility and personal fashion are powered by primary or secondary batteries; maintenance requirements could potentially be reduced or eliminated by introducing a renewable power source drawn from the wearer's body. A test was made to determine the possible power levels available from piezoelectric fiber elements mounted on the shoe upper; approximately 10nW of power was developed during walking. In addition to performance in terms of power generated, cost, durability, manufacturability, and user impact also need to be considered before applying this technology.
by Sebastian Ramirez Denault.
S.B.
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Andersson, Erik. "PHYSIOLOGICAL AND BIOMECHANICAL FACTORS DETERMINING CROSS-COUNTRY SKIING PERFORMANCE." Doctoral thesis, Mittuniversitetet, Avdelningen för hälsovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-27898.

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Cross-country (c.c.) skiing is a complex sport discipline from both physiological and biomechanical perspectives, with varying course topographies that require different proportions of the involved sub-techniques to be utilised. A relatively new event in c.c. skiing is the sprint race, involving four separate heats, each lasting 2-4 min, with diverse demands from distance races associated with longer durations. Therefore, the overall aim of the current thesis has been to examine the biomechanical and physiological factors associated with sprint c.c. skiing performance through novel measurements conducted both in the field (Studies I-III) and the laboratory (Studies IV and V). In Study I sprint skiing velocities and sub-techniques were analysed with a differential global navigation satellite system in combination with video recording. In Studies II and III the effects of an increasing velocity (moderate, high and maximal) on the biomechanics of uphill classical skiing with the diagonal stride (DS) (Study II) and herringbone (HB) (Study III) sub-techniques were examined. In Study I the skiers completed the 1,425 m (2 x 712 m) sprint time trial (STT) in 207 s, at an average velocity of 24.8 km/h, with multiple technique transitions (range: 21-34) between skiing techniques (i.e., the different gears [G2-7]). A pacing strategy involving a fast start followed by a gradual slowing down (i.e., positive pacing) was employed as indicated by the 2.9% faster first than second lap. The slower second lap was primarily related to a slower (12.9%) uphill velocity with a shift from G3 towards a greater use of G2. The maximal oxygen uptake ( O2max) was related to the ability to maintain uphill skiing velocity and the fastest skiers used G3 to a greater extent than G2. In addition, maximal speed over short distances (50 and 20 m) with the G3 and double poling (DP) sub-techniques exerted an important impact on STT performance. Study II demonstrated that during uphill skiing (7.5°) with DS, skiers increased cycle rate and cycle length from moderate to high velocity, while cycle rate increased and cycle length decreased at maximal velocity. Absolute poling, gliding and kick times became gradually shorter with an elevated velocity. The rate of pole and leg force development increased with elevated velocity and the development of leg force in the normal direction was substantially faster during skiing on snow than previous findings for roller skiing, although the peak force was similar in both cases. The fastest skiers applied greater peak leg forces over shorter durations. Study III revealed that when employing the HB technique on a steep uphill slope (15°), the skiers positioned their skis laterally (“V” between 25 to 30°) and planted their poles at a slight lateral angle (8 to 12°), with most of the propulsive force being exerted on the inside forefoot. Of the total propulsive force, 77% was generated by the legs. The cycle rate increased across all three velocities (from 1.20 to 1.60 Hz), while cycle length only increased from moderate to high velocity (from 2.0 to 2.3 m). Finally, the magnitude and rate of leg force generation are important determinants of both DS and HB skiing performance, although the rate is more important in connection with DS, since this sub-technique involves gliding. In Studies IV and V skiers performed pre-tests for determination of gross efficiency (GE), O2max, and Vmax on a treadmill. The main performance test involved four self-paced STTs on a treadmill over a 1,300-m simulated course including three flat (1°) DP sections interspersed with two uphill (7°) DS sections. The modified GE method for estimating anaerobic energy production during skiing on varying terrain employed in Study IV revealed that the relative aerobic and anaerobic energy contributions were 82% and 18%, respectively, during the 232 s of skiing, with an accumulated oxygen (O2) deficit of 45 mL/kg. The STT performance time was largely explained by the GE (53%), followed by O2 (30%) and O2 deficit (15%). Therefore, training strategies designed to reduce energetic cost and improve GE should be examined in greater detail. In Study V metabolic responses and pacing strategies during the four successive STTs were investigated. The first and the last trials were the fastest (both 228 s) and were associated with both a substantially larger and a more rapid anaerobic energy supply, while the average O2 during all four STTs was similar. The individual variation in STT performance was explained primarily (69%) by the variation in O2 deficit. Furthermore, positive pacing was employed throughout all the STTs, but the pacing strategy became more even after the first trial. In addition, considerably higher (~ 30%) metabolic rates were generated on the uphill than on the flat sections of the course, reflecting an irregular production of anaerobic energy. Altogether, a fast start appears important for STT performance and high work rates during uphill skiing may exert a more pronounced impact on skiing performance outdoors, due to the reduction in velocity fluctuations and thereby overall air-drag.

Vid tidpunkten för disputationen var följande delarbeten opublicerade: delarbete 5 inskickat

At the time of the doctoral defence the following papers were unpublished: paper 5 submitted

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Horstman, Christopher Larry. "BIOMECHANICAL AND METABOLIC CHANGES WITHIN RABBIT ARTICULAR CARTILAGE FOLLOWING TREATMENT WITH RADIOFREQUENCY ENERGY." MSSTATE, 2005. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112005-081324/.

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The effects caused to articular cartilage by the remote use of arthroscopically-delivered RF energy to soft tissues in the joint are unknown. This investigation reported the short and long-term effects of bRF and mRF energy on the biomechanical properties and metabolic activity of articular cartilage. In addition, the effect of Cosequin® therapy was addressed. Thirty New Zealand white rabbits were randomly assigned to one of two treatment groups (Group 1 - placebo; Group 2 - Cosequin®). Histopathology, cell viability, GAG synthesis, and mechanical function of the articular cartilage were compared between groups. Data were analyzed using a mixed model ANOVA (p=0.05). Immediate chondrocyte death was created by both RF devices. This damage was noted to be superficial and did not lead to the progressive deterioration of the extracellular matrix or mechanical function of the articular cartilage. Cosequin® therapy was unable to demonstrate significant differences compared to the control group.
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Dixon, Stacey A. "Biomechanical analysis of coronary arteries using a complementary energy model and designed experiments." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17599.

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Souza, Campos Flavio Ballerini. "Performance assessment of prosthetic heart valves using orifice area formulae and the energy index method." FIU Digital Commons, 1993. http://digitalcommons.fiu.edu/etd/2432.

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Valve function is commonly assessed by effective orifice area (EOA) estimates using equations derived from conservation of mass and energy. Errors have been found with the method due to difficulties in determining the valve’s coefficient of discharge (Cd). The Cd, a factor that corrects the EOA for losses in the valvular wake region, has been shown previously to vary with the Reynolds number and valve geometry. In this study, a Cardio-Vascular Duplicator (CVD) is used to determine the Cd for three types of mitral valves, operating in modes ranging from normal to severely stenotic. Since orifice area methods do not account for regurgitant flow, the energy index (EI) method is derived and used in experiments with an aortic valve. Results show that the EI method is more powerful than the EOA because a single quantitative parameter is attributed to each valve, taking into account regurgitant, leakage and pressure losses.
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Gonjo, Tomohiro. "A comparison of biomechanical and physiological characteristics between front crawl and back crawl." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25462.

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Front crawl (FC) and back crawl (BC) are similar in terms of having alternating contributions of the arms combined with a six beat kick. However, the reason for the faster swimming times of FC than BC has not yet been established. There have been several studies in which the energy expenditure (Ė) of FC and BC were investigated. However, few researchers have compared Ė between the strokes. Also, although there have been some studies for FC using 3D motion analysis, few researchers have applied 3D motion analysis for BC. There have also been some studies in which the relationship between isokinetic torque produced on an isokinetic dynamometer and FC performance has been investigated, however, the relationship between isokinetic torque and BC performance is unclear. Therefore, the aim of this study was to determine why FC is faster than BC by investigating physiological and biomechanical differences between FC and BC. Ten Portuguese male national level swimmers were recruited for this study. Three studies were conducted to achieve the aim. In the first study, Ė of FC and BC at the same testing speed below the anaerobic threshold were investigated by measuring swimmers’ oxygen uptake. Kinematic variables of FC and BC below the anaerobic threshold were also measured by 3D motion analysis in the first study. In the second study, 3D motion kinematics of FC and BC at the same selected speeds were investigated. In the third study, kinematic differences between FC and BC at the same exercise intensities, and correlations between the kinematics and isokinetic muscular torques of the swimmer in FC and BC and their differences were assessed. Below the anaerobic threshold, Ė of the swimmers in BC was significantly greater than that in FC at the same speed although there were no differences in stroke frequency (SF), stroke length (SL) and stroke index (SI). Swimmers also had significantly higher Froude efficiency (ηF) in FC than in BC. Differences in several kinematic variables (range of motion of the foot, duration of non-propulsive phases, and intra-cycle velocity variation) suggested that swimmers expended greater energy in BC than in FC. Differences in other kinematic variables (body roll angle, hand speed/acceleration, yaw angle fluctuation, centre of mass displacement, and hand/foot displacements) suggested the possibility of resistive impulse being larger in BC than in FC during the stroke cycle. Thus, FC is more economical and efficient than BC because swimmers lose less energy to the water during the non-propulsive phase, and possibly have smaller resistive impulse in FC than in BC at speeds below the anaerobic threshold. At the same selected speeds above the anaerobic threshold, ηF in BC was significantly lower than that in FC, which was due to faster mean 3D hand speed during the stroke cycle in BC than in FC. The faster mean hand speed in BC than in FC was due to the faster 3D hand speed during the pull phase, and longer relative duration of the release and above-water phases in BC than in FC. SI was also larger in FC than in BC, which was due to longer SL in FC than in BC. The longer SL in FC than in BC was due to the longer duration of propulsive phases and probably smaller resistive impulse during the stroke cycle in FC than in BC. At the same selected exercise intensities, FC was faster than BC because of higher SF. The higher SF in FC than in BC was due to the longer duration of the above-water phase in BC than in FC, longer hand path distance during non-propulsive phases in BC than in FC, earlier timing of the hand entry in relation to the underwater phase of the other hand in FC than in BC. SF in both FC and BC was significantly correlated with shoulder adduction isokinetic torque of the swimmers, however, the effect of shoulder isokinetic torque on the difference in swimming performance between FC and BC required further investigation. In conclusion, FC is faster than BC because swimmers can achieve higher SF in FC than in BC, and FC is more economical and efficient than in BC with indirect evidence that resistive force are greater in BC than in FC.
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Eng, Carolyn Margaret. "An Anatomical and Biomechanical Study of the Human Iliotibial Band's Role in Elastic Energy Storage." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11621.

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The iliotibial band (ITB) is a complex structure that is unique to humans among apes and is derived from the fascia lata (FL) of the thigh. Although the ITB evolved in the hominin lineage, it is unclear whether it evolved to improve locomotor economy, increase stability, or serve a different function. This dissertation tests the hypothesis that the ITB stores and recovers elastic energy during walking and running.
Human Evolutionary Biology
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Hall, Michael G. "Biomechanical and energy analysis of the ischial containment and quadrilateral sockets for the trans femoral amputee." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248527.

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Marconi, Francesco. "Analysis of biomechanical in vitro tests on the human ribs." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18581/.

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In questa Tesi viene descritto il processo di elaborazione dei dati ottenuti su costole umane sottoposte ad un carico flessionale e motiva i risultati ottenuti, con l’obiettivo di ottenere una loro caratterizzazione meccanica. L’elaborazione dei dati è stata suddivisa in tre fasi, che permettono uno studio dal punto di vista meccanico delle costole dall’aspetto globale fino a quello specifico. Dall’analisi globale si è potuto osservare un particolare andamento dei valori di carico di rottura e modulo elastico al variare delle posizioni delle costole nella gabbia toracica mentre i valori delle deformazioni calcolati dalle correlazioni non hanno prodotto alcun risultato notevole, se non indicare la presenza di un momento torcente agente sui provini oltre a quello flessorio impostato. I dati delle micro-CT invece confermano quanto detto legando le caratteristiche meccaniche ad una certa quantità di tessuto osseo. Inoltre i valori del rapporto Bone volume/Tissue volume indicano una possibile relazione sia con i carichi di rottura che con i moduli elastici.
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Fernandes, Fábio António Oliveira. "Biomechanical analysis of helmeted head impacts: novel materials and geometries." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21227.

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Doutoramento em Engenharia Mecânica
A cortiça é um material celular natural capaz de suster quantidades consideráveis de energia. Estas características tornam este material ideal para determinadas aplicações como a proteção de impactos. Considerando equipamentos de segurança passiva pessoal, os materiais sintéticos são hoje em dia os mais utilizados, em particular o poliestireno expandido. Este também é capaz de absorver razoáveis quantidades de energia via deformação permanentemente. Por outro lado, a cortiça além de ser um material natural, é capaz de recuperar grande parte da sua forma após deformada, uma característica desejada em aplicações com multi-impacto. Neste trabalho é efetuada uma avaliação da aplicabilidade da cortiça em equipamentos de segurança pessoal, especificamente capacetes. Vários tipos de cortiça aglomerada foram caracterizados experimentalmente. Impactos foram simulados numericamente para avaliar a validade dos modelos constitutivos e as propriedades utilizadas para simular o comportamento da cortiça. Capacetes foram selecionados como caso de estudo, dado as energias de impacto e repetibilidade de impactos a que estes podem ser sujeitos. Para avaliar os capacetes de um ponto de vista biomecânico, um modelo de cabeça humana em elementos finitos foi desenvolvido. Este foi validado de acordo com testes em cadáveres existentes na literatura. Dois modelos de capacete foram modelados. Um modelo de um capacete rodoviário feito de materiais sintéticos, o qual se encontra disponível no mercado e aprovado pelas principais normas de segurança de capacetes, que serve de referência. Este foi validado de acordo com os impactos da norma. Após validado, este foi avaliado com o modelo de cabeça humana em elementos finitos e uma análise ao risco de existência de lesões foi efetuado. Com este mesmo capacete, foi concluído que para incorporar cortiça aglomerada, a espessura teria de ser reduzida. Então um novo modelo de capacete foi desenvolvido, sendo este uma espécie de modelo genérico com espessuras constantes. Um estudo paramétrico foi realizado, variando a espessura do capacete e submetendo o mesmo a duplos impactos. Os resultados destes impactos e da análise com o modelo de cabeça indicaram uma espessura ótima de 40 mm de cortiça aglomerada, com a qual o capacete tem uma melhor resposta a vários impactos do que se feito de poliestireno expandido.
Cork is a natural cellular material capable of withstanding considerable amounts of energy. These features make it an ideal material for some applications, such as impact protection. Regarding personal safety gear, synthetic materials, particularly expanded polystyrene, are typically used. These are also able to absorb reasonable amounts of energy by deforming permanently. On the other hand, in addition to cork being a natural material, it recovers almost entirely after deformation, which is a desired characteristic in multi-impact applications. In this work, the applicability of agglomerated cork in personal safety gear, specifically helmets, is analysed. Different types of agglomerated cork were experimentally characterized. These experiments were simulated in order to assess the validity of the constitutive models used to replicate cork's mechanical behaviour. In order to assess the helmets from a biomechanical point of view, a finite element human head model was developed. This head model was validated by simulating the experiments performed on cadavers available in the literature. Two helmet models were developed. One of a motorcycle helmet made of synthetic materials, which is available on the market and certified by the main motorcycle helmets safety standards, being used as reference. This helmet model was validated against the impacts performed by the European standard. After validated, this helmet model was analysed with the human head model, by assessing its head injury risk. With this helmet, it was concluded that a thinner helmet made of agglomerated cork might perform better. Thus, a new helmet model with a generic geometry and a constant thickness was developed. Several versions of it were created by varying the thickness and subjecting them to double impacts. The results from these impacts and the analyses carried out with the finite element head model indicated an optimal thickness of 40 mm, with which the agglomerated cork helmet performed better than the one made of expanded polystyrene.
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Books on the topic "Biomechanical energy"

1

Whitehouse, D. A. An investigation into the energy expenditure and biomechanics of two sailing postures. Cardiff: S.G.I.H.E., 1985.

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John, Zumerchik, ed. Encyclopedia of sports science. New York: Macmillan Library Reference USA, 1997.

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Weiselfish-Giammatteo, Sharon. Integrative manual therapy for biomechanics: Application of muscle energy and 'beyond' technique : treatment of the spine, ribs, and extremities. Berkeley, Calif: North Atlantic Books, 2003.

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Biomechanical alterations and energy expenditure during walking and running with hand weights. 1988.

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Biomechanical alterations and energy expenditure during walking and running with hand weights. 1987.

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Eng, Carolyn Margaret. An Anatomical and Biomechanical Study of the Human Iliotibial Band's Role in Elastic Energy Storage. 2014.

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Price, Kathleen Marie. A biomechanical and physiological analysis of efficiency during different running paces. 1992.

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A biomechanical and physiological analysis of efficiency during different running paces. 1992.

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Price, Kathleen Marie. A biomechanical and physiological analysis of efficiency during different running paces. 1992.

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Biewener, Andrew A., and Shelia N. Patek, eds. Muscles and Skeletons. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198743156.003.0002.

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Animal locomotion depends on the organization, physiology and biomechanical properties of muscles and skeletons. Musculoskeletal systems encompass the mechanical interactions of muscles and skeletal elements that ultimately transmit force for movement and support. Muscles not only perform work by contracting and shortening to generate force, they can also operate as brakes to slow the whole body or a single appendage. Muscles can also function as struts (rod-like) to maintain the position of a joint and facilitate elastic energy storage and recovery. Skeletal muscles share a basic organization and all rely on the same protein machinery for generating force and movement. Variation in muscle function, therefore, depends on the underlying mechanical and energetic components, enzymatic properties, and activation by the nervous system. Muscles require either an internal, external or hydrostatic skeletal system to transmit force for movement and support.
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Book chapters on the topic "Biomechanical energy"

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Loret, Benjamin, and Fernando M. F. Simões. "Transfers of mass, momentum, and energy." In Biomechanical Aspects of Soft Tissues, 313–43. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315110783-11.

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Meena, Ankit, T. Jagadeesha, Manoj Nikam, Seung-Bok Choi, and Vikram G. Kamble. "Design of Energy Harvesting Mechanism for Walking Applications." In Advanced Materials for Biomechanical Applications, 273–301. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003286806-15.

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Ribhu, Nazmus Sakib, M. K. A. Ahamed Khan, Manickam Ramasamy, Chun Kit Ang, Lim Wei Hong, Duc Chung Tran, Sridevi, and Deisy. "Investigation of Gait and Biomechanical Motion for Developing Energy Harvesting System." In Lecture Notes in Networks and Systems, 151–67. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4355-9_13.

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Kriechbaumer, A., M. P. Trejo Ramírez, U. Mittag, M. Itskov, J. M. López Ramírez, and J. Rittweger. "Design, Development and Validation of an Artificial Muscle Biomechanical Rig (AMBR) for Finite Element Model Validation." In Emerging Challenges for Experimental Mechanics in Energy and Environmental Applications, Proceedings of the 5th International Symposium on Experimental Mechanics and 9th Symposium on Optics in Industry (ISEM-SOI), 2015, 319–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28513-9_44.

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Lucas, George L., Francis W. Cooke, and Elizabeth A. Friis. "Work and Energy Concepts." In A Primer of Biomechanics, 89–97. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4419-8487-6_7.

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Tanaka, Masao, Shigeo Wada, and Masanori Nakamura. "Spring Network Modeling Based on the Minimum Energy Concept." In Computational Biomechanics, 141–79. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54073-1_4.

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Schreiner, K. E. "Dissipation of Mechanical Energy in Muscles." In Biomechanics: Current Interdisciplinary Research, 635–38. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-7432-9_95.

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di Prampero, Pietro E., and Cristian Osgnach. "The Energy Cost of Sprint Running and the Energy Balance of Current World Records from 100 to 5000 m." In Biomechanics of Training and Testing, 269–97. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-05633-3_12.

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Semegn, Alehegn Melesse, Bereket Haile Woldegiorgis, and Zerihun Wondimu Lemessa. "Recent Developments in Biomechanics-Based Prediction of Musculoskeletal Disorders: A Review." In Green Energy and Technology, 155–67. Cham: Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-77339-6_10.

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Carter, D. R., D. P. Fyhrie, R. Whalen, T. E. Orr, D. J. Schurman, and D. J. Rapperport. "Control of Chondro-Osseous Skeletal Biology by Mechanical Energy." In Biomechanics: Basic and Applied Research, 219–24. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3355-2_26.

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Conference papers on the topic "Biomechanical energy"

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Chan, Hugo Hung-Tin, Haisu Liao, Xuan Zhao, Junrui Liang, Wei-Hsin Liao, Xinyu Wu, and Fei Gao. "A smart wearable device for capturing biomechanical energy from human knee motion." In 2024 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 387–92. IEEE, 2024. http://dx.doi.org/10.1109/aim55361.2024.10637186.

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Murugan, Muthuvel, Ala Tabiei, and Gregory Hiemenz. "Crash Dynamic Model for Rotorcraft Adaptive Seat Energy Absorber Evaluation." In Vertical Flight Society 71st Annual Forum & Technology Display, 1–8. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10143.

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This research study focuses on the finite-element based nonlinear dynamic model development and analysis for virtual evaluation of adaptive seat dampers for enhanced occupant protection during vertical crash landings of a helicopter. The current state-of-the-art helicopter crew seat has passive safety mechanisms that are highly limited in their capability to optimally adapt to each type of crash scenario due to variations in both occupant weight and crash severity level. While passive crash energy absorbers work well for a single design condition (50th percentile male occupant and fixed crash severity level), they do not offer adequate protection across a broad spectrum of crash conditions by minimizing the load transmitted to the occupant. This study reports the development of a finite-element based seat-occupant system level model using LS-DYNA for rotorcraft crash injury simulation. This finite element simulation model of a seated occupant with five-point belt and stroking seat is used to study occupant kinematics and spinal injury assessments to support crash sled evaluations of seat energy absorbers. The injury criteria and tolerance levels for the biomechanical effects are discussed for each of the adult-sized occupants with respect to thoracic lumbar loads. The desired objective of this analytical model development is to develop a tool to study the performance effectiveness of adaptive seat energy absorbers for enhancing rotorcraft occupant crash protection.
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Donelan, J. Maxwell, Veronica Naing, and Qingguo Li. "Biomechanical energy harvesting." In 2009 IEEE Radio and Wireless Symposium (RWS). IEEE, 2009. http://dx.doi.org/10.1109/rws.2009.4957269.

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Li, Q., V. Naing, J. A. Hoffer, D. J. Weber, A. D. Kuo, and J. M. Donelan. "Biomechanical energy harvesting: Apparatus and method." In 2008 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2008. http://dx.doi.org/10.1109/robot.2008.4543774.

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Getman, I. A., S. V. Podlesnij, and D. Yu Mikhieienko. "Energy conservation law in biomechanical systems." In NEW DEVELOPMENT AREAS OF DIGITALIZATION AT THE BEGINNING OF THE THIRD MILLENNIUM. Baltija Publishing, 2021. http://dx.doi.org/10.30525/978-9934-26-172-5-16.

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Sinatra, Francy L., Stephanie L. Carey, and Rajiv Dubey. "Biomechanical Model Representing Energy Storing Prosthetic Feet." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38707.

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Previous studies have been conducted to develop a biomechanical model for a human’s lower limb. Amongst them, there have been several studies trying to quantify the kinetics and kinematics of lower-limb amputees through motion analysis [5, 10, 11]. Currently, there are various designs for lower-limb prosthetic feet such as the Solid Ankle Cushion Heel (SACH) from Otto Bock (Minneapolis) or the Flex Foot from Ossur (California). The latter is a prosthetic foot that allows for flexibility while walking and running. Special interest has been placed in recording the capabilities of these energy-storing prosthetic feet. This has been done through the creation of biomechanical models with motion analysis. In these previous studies the foot has been modeled as a single rigid-body segment, creating difficulties when trying to calculate the power dissipated by the foot [5, 20, 21]. This project studies prosthetic feet with energy-storing capabilities. The purpose is to develop an effective way of calculating power by using a biomechanical model. This was accomplished by collecting biomechanical data using an eight camera VICON (Colorado) motion analysis system including two AMTI (BP-400600, Massachusetts) force plates. The marker set that was used, models the foot using several segments, hence mimicking the motion the foot undergoes and potentially leading to greater accuracy. By developing this new marker set, it will be possible to combine the kinematic and kinetic profile gathered from it with previous studies that determined metabolic information. This information will allow for the better quantification and comparison of the energy storage and return (ES AR) feet and perhaps the development of new designs.
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Apgar, Collier, George Schmidt, Jacob Wild, Zachary Patterson, David Hieronymous, Paul Revesman, and Jacquelyn Nagel. "Biomechanical energy harvesting using a knee mounted generator." In 2016 Systems and Information Engineering Design Symposium (SIEDS). IEEE, 2016. http://dx.doi.org/10.1109/sieds.2016.7489278.

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Fadhel, Yosra Ben, Sana Ktata, Salem Rahmani, and Kamal Al-Haddad. "Energy management circuit from internal biomechanical energy harvester to power a pacemaker." In 2022 IEEE International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM). IEEE, 2022. http://dx.doi.org/10.1109/cistem55808.2022.10043879.

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Cheng, Wing Ling, Chao Chen, and Wei-Hsin Liao. "Design considerations in medium-power biomechanical energy harvesting circuits." In 2014 IEEE International Conference on Information and Automation (ICIA). IEEE, 2014. http://dx.doi.org/10.1109/icinfa.2014.6932758.

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Shamsuddin, Saeed Ahmed Khan, Abdul Qadir Rahimoon, Ahsanullah Abro, Mehran Ali, Izhar Hussain, and Farooq Ahmed. "Biomechanical Energy Harvesting by Single Electrode-based Triboelectric Nanogenerator." In 2019 2nd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET). IEEE, 2019. http://dx.doi.org/10.1109/icomet.2019.8673493.

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Reports on the topic "Biomechanical energy"

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Zhang, Qiming, and Heath Hogmann. Harvesting Electric Energy During Walking With a Backpack: Physiological, Ergonomic, Biomechanical, and Electromechanical Materials, Devices, and System Considerations. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada428873.

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Quillen, William S., and M. J. Highsmith. Metabolic and Biomechanical Measures of Gait Efficiency of Three Multi-Axial, Vertical Shock and Energy Storing Return Prosthetic Feet During Simple & Complex Mobility Activities. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada574692.

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Quillen, William S., and M. J. Highsmith. Metabolic and Biomechanical Measures of Gait Efficiency of Three Multi-Axial, Vertical Shock and Energy Storing Return Prosthetic Feet During Simple & Complex Mobility Activities. Fort Belvoir, VA: Defense Technical Information Center, October 2013. http://dx.doi.org/10.21236/ada601342.

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Quillen, William S., and M. J. Highsmith. Metabolic and Biomechanical Measures of Gait Efficiency of Three Multi-Axial, Vertical Shock and Energy Storing-Return Prosthetic Feet During Simple and Complex Mobility Activities. Fort Belvoir, VA: Defense Technical Information Center, December 2014. http://dx.doi.org/10.21236/ada615208.

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Goel, Dr Divanshu, and Dr Manjeet Singh. HYBRID EXTERNAL FIXATION FOR PROXIMAL TIBIAL FRACTURES. World Wide Journals, February 2023. http://dx.doi.org/10.36106/ijar/1505336.

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Introduction: Intraarticular fractures of the tibial plateau and periarticular fractures of the proximal tibia, caused by high energy trauma pose a therapeutic dilemma. Such fractures are associated with extensive soft tissue damage with or without compound injury. The management of such high velocity injuries become a challenge to the trauma surgeons. The goals of these periarticular fractures management are 1. Restoration of joint congruity by anatomic reduction 2. Stable xation of fractures thus allowing early movements 3. Proper care of injured soft tissues. In earlier days uniplanar external xation were used with various complications like pin track infections and decreased stability. In this study we present the use of hybrid external xation system which includes Ilizarov ring xator and AO rod external xator connected with indigenously manufactured connecting clamps and short shafts augmented with or without minimal internal xation. The purpose of this study is to assess the utility of this hybrid external xation system and to analyse the functional outcome, soft tissue healing and fracture union. To assess the performance of the Hybrid External Fixator Aim and Objective: in the treatment of different types of proximal tibial fractures, to evaluate the functional outcome, soft tissue healing and fracture union and radiological outcome, to evaluate the biomechanical and biological advantage of hybrid external xator, to assess the utility of the indigenously made connecting clamps. Material and Method: The study included 21 cases of periarticular fractures of the proximal tibia which were treated by use of 5/8th Ilizarov ring, AO tubular external xator and with indigenously manufactured connecting clamps & short shaft in a hybrid mode. All cases were prospectively followed up and studied. Almost all the cases (99%) had sustained Road trafc Accidents (high velocity injuries) except one case which had sustained injury by fall of cement wall over her leg. Minimum follow up – 1.5 months, maximum follow up – 12 months, mean follow up – 6.42 months. All fractures were followed according to a protocol. All fractures were treated with either CLOSED REDUCTION AND HYBRID EXTERNAL FIXATION OR WITH MINIMAL OPEN REDUCTION AND A HYBRID SYSTEM. The study group was consisted of 16 males (76%) and 5 females (24%) with an average age for males of 43.06 years (range 25 to 65) and for females of 53.4 years (range 41 to 59). All the patients were in the age group of 26 to 65 years, mean age is 43.09. In the present s Result: tudy of 21 cases, the use of Hybrid external xation, as a denite treatment, for high – energy proximal tibia bicondylar fractures proved to be benecial.
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