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Journal articles on the topic 'One-Leg Drop-Jump Landing'

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1

You, Chieh-Hsin, and Chi-Huang Huang. "Effects of Leg Stiffness Regulated by Different Landing Styles on Vertical Drop Jump Performance." Journal of Human Kinetics 83, no. 1 (2022): 29–37. http://dx.doi.org/10.2478/hukin-2022-0066.

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Abstract The purpose of this study was to investigate the effects of stiffness regulated by landing styles on drop jump performance. Twenty-four male lacrosse athletes performed drop jumps with stiff (ST), self-selected (SS), and soft (SF) landing from a 0.42 m box. Leg stiffness, ground contact time, depth, jump height, maximum ground reaction force (GRF), GRF at the start of the propulsive phase, mean power, peak power, and the reactive strength index (RSI) were calculated. The results showed that jump height and the RSI had strong correlations to power production in all drop jump styles. Po
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2

Romanchuk, Nicholas J., Michael J. Del Bel, and Daniel L. Benoit. "SEX-SPECIFIC ENERGY ABSORPTION STRATEGIES DURING UNANTICIPATED SINGLE-LEG LANDINGS IN ADOLESCENTS: IMPLICATIONS FOR KNEE INJURIES." Orthopaedic Journal of Sports Medicine 8, no. 4_suppl3 (2020): 2325967120S0023. http://dx.doi.org/10.1177/2325967120s00237.

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Background: The vast majority of ACL injuries in adolescents occur during non-contact injuries, in particular single-leg landings. The magnitude of energy absorption about each joint during theses landings influences the internal and external forces acting on the joints of the lower extremity. Understanding the biomechanics of landing in adolescent male and female athletes may provide insight into these non-contact injury mechanisms. Hypothesis/Purpose: This study set out to identify sex-specific energy absorption strategies during single-leg landing and determine the relationship between join
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3

Kazumasa, Nakagawa, Takamatsu Reika, and Matsushima Miku. "Sex Differences in Muscle Activity During Drop-Jump Landing Motion." Journal of Health and Medical Sciences 5, no. 3 (2022): 28–35. https://doi.org/10.31014/aior.1994.05.03.226.

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This study investigated the effect of hip joint muscles' activity on dynamic knee-joint valgus angle during one-leg drop-jump landing motion in male and female subjects. Twenty-four healthy university students (11 males and 13 females) participated in the study. Surface electromyography was used to measure muscle activity during a one-leg landing motion. A gender difference was observed: males showed greater activity in the gluteus medius muscle compared to the adductor magnus muscle, whereas females showed greater activity in the rectus femoris muscle. A correlation between lower limb mus
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4

Mueske, Nicole, Mia J. Katzel, Kyle P. Chadwick, et al. "BIOMECHANICAL SYMMETRY DURING DROP JUMP AND SINGLE-LEG HOP LANDING IN UNINJURED ADOLESCENT ATHLETES." Orthopaedic Journal of Sports Medicine 7, no. 3_suppl (2019): 2325967119S0002. http://dx.doi.org/10.1177/2325967119s00023.

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BACKGROUND Symmetry of strength, thigh girth and hop distance is often used as a benchmark in return to sport testing. Using symmetry as a gold standard has been translated into biomechanical testing; however, kinematic and kinetic symmetry during dynamic tasks in adolescents without lower extremity injury is not well understood. The purpose of this study was to assess symmetry in uninjured adolescent athletes during double and single-leg landing tasks. METHODS 36 uninjured athletes (ages 7-15 years, mean 12.4, SD 2.4; 47% female) completed vertical drop jump (DJ) and single-leg hop (SLH) for
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5

Rajakaruna, Mr Priyankara Manoj, Associate Professor Yvonne C. Learmonth, and Associate Professor Alasdair R. Dempsey. "COMPARISON OF INTER-SESSION, INTRA-RATER AND INTER-RATER RELIABILITY OF SINGLE AND DOUBLE LEG LANDING ERROR SCORING SYSTEM USING DIFFERENT CALCULATION METHODS." Journal of Clinical Exercise Physiology 13, s2 (2024): 463. http://dx.doi.org/10.31189/2165-7629-13-s2.463.

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INTRODUCTION & AIMS The Landing Error Scoring System (LESS) is used for screening noncontact anterior cruciate ligament (ACL) injury risk. The LESS is deemed a valid and reliable indicator of landing biomechanics that predict noncontact ACL injuries. We have sought to validate a Single-Leg Landing Error Scoring System (SLESS) against the established LESS. There are seven distinct calculation methods for final LESS scores, adding variability to the original version and the risk of misinterpreting results. This study used different calculation methods to investigate the inter-session, intra-
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6

Vaishnavi, G., V. Saipavithra, G. Yuvarani, et al. "Effectiveness of isolated ankle strengthening and functional balance training in single leg drop jump land in football players and measuring the stability." Biomedicine 40, no. 3 (2020): 392–94. http://dx.doi.org/10.51248/.v40i3.36.

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Introduction and Aim: Football is one of the famous sports in the world and associated with many ankle injuries in football players. Many football players use single leg drop jump landing ranging from 13 to 20 out of 1000 players. Functional balance maintain or improve activities of daily living and quality of life. Strength training increases the density of bone and reduces the risk of fractures. Aim of this present study is to analyze the effectiveness of the isolated ankle strengthening and functional balance training in single leg drop jump land in football players.
 Materials and Met
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7

Zantop, Thore, Shozaburo Terai, Przemyslaw Warminski, and Christian Zantop. "Return to sports following ACL reconstruction: prospective analysis of functional stability 3 months postoperatively in 280 patients." Orthopaedic Journal of Sports Medicine 8, no. 9_suppl7 (2020): 2325967120S0054. http://dx.doi.org/10.1177/2325967120s00546.

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Introduction: For the last years, the terms return to play and return to competition after ACL reconstruction have been spread. Recent literature does not provide sufficient information on the approach to identify knee joint conditions that are likely to result in a recurrent injury following ACL reconstruction. Aim of this study is therefore to prospectively investigate the functional stability after ACL reconstruction by one single surgeon 3 months postoperatively. Hypotheses: The functional stability after ACL reconstruction 3 months postoperatively can safely be assessed using a multi-fact
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8

Richardson, Mark C., Andrew Wilkinson, Paul Chesterton, and William Evans. "Effect of Sand on Landing Knee Valgus During Single-Leg Land and Drop Jump Tasks: Possible Implications for ACL Injury Prevention and Rehabilitation." Journal of Sport Rehabilitation 30, no. 1 (2021): 97–104. http://dx.doi.org/10.1123/jsr.2019-0306.

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Context: Despite significant emphasis on anterior cruciate ligament injury prevention, injury rates continue to rise and reinjury is common. Interventions to reduce injury have included resistance, balance, and jump training elements. The use of sand-based jump training has been postulated as an effective treatment. However, evidence on landing mechanics is limited. Objective: To determine potential differences in landing strategies and subsequent landing knee valgus when performing single-leg landing (SLL) and drop jump (DJ) tasks onto sand and land, and to compare between both male and femal
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9

Cannon-Noren, Harry, and Richard Page. "Do lower limb kinetic and kinematic differences in drop jump landings persist when players have returned to sport following knee ligamentous injuries?" Graduate Journal of Sports Science, Coaching, Management, & Rehabilitation 1, no. 3 (2024): 42. http://dx.doi.org/10.19164/gjsscmr.v1i3.1525.

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Knee injuries (KI) are identified as one of the most burdensome lower limb injuries in football with long and complicated rehabilitation and high re-injury risk. Current research often describes technique deficits being present upon RTS, often being a result of poor return to sport (RTS) testing procedures. More recently, research has advocated the use of single leg vertical jump assessments, due to the specificity of the movement to injury mechanisms and the ability to consider different phases of the task to inform practitioners of joint contributions to the propulsion and landing phases. Th
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10

Sagawa, Yuki, Takumi Yamada, Takehiro Ohmi, Yoshinao Moriyama, and Junpei Kato. "Differences in lower extremity kinematics during single-leg lateral drop landing of healthy individuals, injured but asymptomatic patients, and patients with chronic ankle instability- a cross-sectional observational study." PLOS ONE 19, no. 3 (2024): e0297660. http://dx.doi.org/10.1371/journal.pone.0297660.

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The lower-extremity kinematics associated with forward jump landing after an ankle injury is known to differ for patients with Chronic Ankle Instability (CAI), copers (injured but asymptomatic patients), and healthy individuals. However, the differences in the lower extremity kinematics of these groups associated with a Single-leg Lateral Drop Landing (SLDL) are unknown. The purpose of this study is to characterize the lower limb and foot kinematics during SLDL in CAI patients and to compare these characteristics with those of the copers and healthy individuals. This was a cross-sectional obse
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11

Cooke, Rosalyn, Alison Rushton, James Martin, Andy Soundy, Lee Herrington, and Nicola R. Heneghan. "Lower extremity functional performance tests and their measurement properties in athletes: a systematic review and narrative synthesis." BMJ Open Sport & Exercise Medicine 11, no. 2 (2025): e002389. https://doi.org/10.1136/bmjsem-2024-002389.

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ObjectiveTo identify functional performance tests (FPTs) with potential to identify athletes at risk of lower extremity injury (LEI) and assess their measurement properties.DesignSystematic review conducted in line with Preferred Reporting Items for Systematic Reviews and Meta-Analyses and PRISMA in Exercise, Rehabilitation, Sports Medicine and Sports Science guidance.Data sourcesTwo-stage systematic search of Medline, Embase, Cumulative Index to Nursing and Allied Health Literature and SPORTDiscus databases from inception to 24 November 2023, supplemented by hand searching of reference lists,
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12

Vidulin, Nino, Roberto Ćaćan, and Stanisla Peharec. "Vertical Ground Reaction Force-Time Curve Differences Between the Two Landings of a Drop Vertical Jump. Implication For ACL Injury Risk." Studia sportiva 18, no. 2 (2024). http://dx.doi.org/10.5817/sts2024-2-2.

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Vertical drop jump consists two landings of which the first one is the most frequently analysed one. Aim of this paper was to compare kinetic patterns between first and second landings and dominant and non-dominant leg between landings by analysing force-time curves and their variability across landings. 44 top level female handball players (N = 25) and volleyball players (N = 19) of average age 24 ± 4 y, height 181.1 ± 7.8 cm and weight 72.4 ± 8.0 kg agreed to participate in this study. Each subject completed 4 successful drop jumps from an initial height of 30 cm on two parallel ground react
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13

Nakagawa, Kazumasa, Reika Takamatsu, and Miku Matsushima. "Sex Differences in Muscle Activity During Drop-Jump Landing Motion." Journal of Health and Medical Sciences 5, no. 3 (2022). http://dx.doi.org/10.31014/aior.1994.05.03.226.

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This study investigated the effect of hip joint muscles' activity on dynamic knee-joint valgus angle during one-leg drop-jump landing motion in male and female subjects. Twenty-four healthy university students (11 males and 13 females) participated in the study. Surface electromyography was used to measure muscle activity during a one-leg landing motion. A gender difference was observed: males showed greater activity in the gluteus medius muscle compared to the adductor magnus muscle, whereas females showed greater activity in the rectus femoris muscle. A correlation between lower limb muscle
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14

Hayek, Roee, Uri Gottlieb, Itai Gutman, and Shmuel Springer. "Peroneal muscle response to single-leg drop-jump and unexpected leg-drop in young and middle-aged adults before and after one session of neuromuscular training." European Review of Aging and Physical Activity 20, no. 1 (2023). http://dx.doi.org/10.1186/s11556-023-00321-8.

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Abstract Background Changes in neuromuscular ability in middle age (MA) may lead to deterioration of postural control. The aim of this study was to investigate the anticipatory response of the peroneus longus muscle (PL) to landing after a single-leg drop-jump (SLDJ), and its postural response after an unexpected leg-drop in MA and young adults. A second aim was to investigate the influence of neuromuscular training on PL postural responses in both age groups. Methods Twenty-six healthy MA (55.3 ± 4 years) and 26 healthy young adults (26.3 ± 3.6 years) participated in the study. Assessments we
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15

Ahmadabadi, Somayeh, Hamid Rjabi, Reza Gharakhanlou, Saeed Talebian, and Aref Basereh. "Effects of a 4-week plyometric training on activity patterns during different phases of one-leg drop jump with focus on jump height." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-36461-1.

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AbstractAthletic women have shown a higher risk of ACL injury during jump landing compared to men. Plyometric training can be an alternative way to minimize the risk of knee injuries via the changed muscle activity patterns. Hence, the aim of this study was to determine the effects of a 4-week plyometric training program on the muscle activity pattern in different phases of one-leg drop jump in active girls. Active girls were randomly allocated into 2 groups (Plyometric training = 10, Control group = 10) where the plyometric training group (PTG) performed 60 min exercises, 2 sessions/1 week fo
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16

Pang, Johnson Chun Yiu, and Rachel Suet Wai Tsang. "Reliability of three-dimensional motion analysis during single-leg side drop landing test after anterior cruciate ligament reconstruction: An in vivo motion analysis study." Hong Kong Physiotherapy Journal, May 30, 2022, 1–9. http://dx.doi.org/10.1142/s1013702522500081.

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Background: Anterior cruciate ligament (ACL) injury is a common sport injury and investigation of landing biomechanics is helpful in injury prevention and rehabilitation. Recent study found a lateral single-leg drop landing test resulted in the highest peak knee valgus angle (PKVA), but its reliability on patients who received ACL reconstruction (ACLR) is unknown. Objective: This study aimed to investigate the reliability in both within and between days on the normalized vertical ground reaction force (NVGRF) and kinematics of lower limbs after receiving ACLR. The findings can form the corners
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17

Bandodkar, Shlok, Moein Koohestani, Ava Schwartz, Meredith Chaput, and Grant Norte. "Kinesiophobia Associates With Physical Performance in Patients With ACL Reconstruction: A Critically Appraised Topic." Journal of Sport Rehabilitation, 2025, 1–7. https://doi.org/10.1123/jsr.2024-0371.

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Clinical Scenario: Anterior cruciate ligament (ACL) injuries remain one of the most common and debilitating injuries that physically active individuals experience. Pain-related fear of movement and/or reinjury, or kinesiophobia, is the most frequently cited reason for not returning to sport after ACL reconstruction. Understanding how kinesiophobia may impact recovery of physical performance is essential to guide targeted rehabilitation. Clinical Question: Does kinesiophobia associate with physical performance in patients with a history of ACL reconstruction? Summary of Key Findings: Five cross
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18

Ulman, Sophia, Ashley Erdman, Alex Loewen, et al. "Concurrent Validity of Movement Screening Criteria Designed to Identify Injury Risk Factors in Adolescent Female Volleyball Players." Frontiers in Sports and Active Living 4 (June 24, 2022). http://dx.doi.org/10.3389/fspor.2022.915230.

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Anterior cruciate ligament (ACL) injuries in female adolescent athletes occur at disproportionately high levels compared to their male counterparts. However, limited prospective data exist on the validity of low-cost screening tools that can proactively identify ACL injury risk, specifically for female athletes. The purpose of this study was to assess the concurrent validity of a three-task injury risk factor assessment by comparing visually derived outcome scores from two-dimensional (2D) video data with dichotomized three-dimensional (3D) biomechanical variables collected using motion captur
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19

Lynall, Robert C., Rachel S. Johnson, Landon B. Lempke, and Julianne D. Schmidt. "Test–Retest Reliability of a Functional Reaction Time Assessment Battery." Journal of Sport Rehabilitation, 2021, 1–5. http://dx.doi.org/10.1123/jsr.2021-0021.

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Context: Reaction time is commonly assessed postconcussion through a computerized neurocognitive battery. Although this measure is sensitive to postconcussion deficits, it is not clear if computerized reaction time reflects the dynamic reaction time necessary to compete effectively and safely during sporting activities. Functional reaction time assessments may be useful postconcussion, but reliability must be determined before clinical implementation. Objective: To determine the test–retest reliability of a functional reaction time assessment battery and to determine if reaction time improved
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20

Grooms, Dustin R., Jed A. Diekfuss, Alexis B. Slutsky-Ganesh, et al. "Preliminary Report on the Train the Brain Project: Sensorimotor Neural Correlates of Anterior Cruciate Ligament Injury Risk Biomechanics - Part I." Journal of Athletic Training, March 10, 2022. http://dx.doi.org/10.4085/1062-6050-0547.21.

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ABSTRACT Context: Anterior cruciate ligament (ACL) injury commonly occurs via non-contact motor coordination errors resulting in excessive multiplanar loading during athletic movements. Preventing motor coordination errors requires neural sensorimotor integration activity to support knee joint neuromuscular control, but the underlying neural mechanisms driving injury risk motor control are not well understood. Objective: To evaluate brain activity differences for knee sensorimotor control between athletes with high and low injury risk mechanics. Design: Case-control study. Setting: Research la
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21

Weldon, Neal, Mazie Atteberry, David Werner, Tyler Kallman, Matthew Tao, and Elizabeth Wellsandt. "Poster 359: Muscle Performance and Drop Jump Mechanics Associate with Second Injury in a Matched Cohort of Athletes Who Passed Functional Return-to-Sport Criteria after ACL Reconstruction." Orthopaedic Journal of Sports Medicine 12, no. 7_suppl2 (2024). http://dx.doi.org/10.1177/2325967124s00325.

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Objectives: In young athletes who undergo an anterior cruciate ligament reconstruction (ACLR), up to one-third will suffer a second injury. Sport and activity level, quadriceps strength, ability to single-leg hop, biomechanical movement patterns, and time to return-to-sport (RTS) clearance are among the known risk factors associated with ACL reinjury. Passing a battery of RTS testing has shown to reduce second injury rate by up to 84%. However, the feasibility of validated RTS batteries in most orthopedic clinics is poor, though recent steps have been made toward investigating more clinic-frie
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22

Hanimann, Jonas, Lynn Ellenberger, Thomas Bernhard, et al. "More than just a side effect: Dynamic knee valgus and deadbug bridging performance in youth soccer players and alpine skiers have similar absolute values and asymmetry magnitudes but differ in terms of the direction of laterality." Frontiers in Physiology 14 (March 8, 2023). http://dx.doi.org/10.3389/fphys.2023.1129351.

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From a preventative perspective, leg axis and core stabilization capacities are important for soccer players and alpine skiers; however, due to different sport-specific demands, the role of laterality clearly differs and may result in functional long-term adaptations. The aims of this study are 1) to determine whether there are differences in leg axis and core stability between youth soccer players and alpine skiers and 2) between dominant and non-dominant sides, and 3) to explore the outcomes of applying common sport-specific asymmetry thresholds to these two distinct cohorts. Twenty-one high
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