Frontal plane comparison between drop jump and vertical jump: implications for the assessment of ACL risk of injury

Cesar, Guilherme M.; Tomasevicz, Curtis L.; Burnfield, Judith M.

doi:10.1080/14763141.2016.1174286

Cited by 21 publications

(20 citation statements)

References 29 publications

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“…Research examining frontal plane knee motion in female athletes has revealed strong agreement (r = 0.93) in knee valgus during vertical jump and drop vertical jump tests 30 . Owing to this similarity, the authors proposed that the vertical jump could be utilized as a practice measure of ACL injury risk; however, knee kinematics were analyzed during the pre-flight phase of the vertical jump and not during landing, meaning the results should be interpreted with caution.…”

Section: Discussionmentioning

confidence: 97%

Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening

Lloyd¹,

Oliver²,

Myer³

et al. 2020

Journal of Sport Rehabilitation

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Context: Despite the popularity of jump-landing tasks being used to identify injury risk factors, minimal data currently exist examining differences in knee kinematics during commonly used bilateral jumping tasks. This is especially the case for rebounding-based protocols involving young athletes. Objective: To compare the frontal plane projection angles (FPPAs) during the drop vertical jump (DVJ) and tuck jump assessment (TJA) in a cohort of elite male youth soccer players of varying maturity status. Methods: A total of 57 male youth soccer players from an English championship soccer club participated in this study. Participants performed 3 trials of the DVJ and TJA, during which movement was recorded with 2-dimensional video cameras. FPPA for both right (FPPA-r) and left (FPPA-l) legs, with values <180° indicative of medial knee displacement. Results: On a whole-group level, FPPA-r (172.7° [7.4°] vs 177.2° [11.7°]; P < .05; effect size [ES] = 0.46) and FPPA-l (173.4° [7.3°] vs 179.2° [11.0°]; P < .05; ES = 0.62) were significantly greater for both limbs in the TJA compared with the DVJ; however, these differences were less consistent when grouped by maturity status. FPPA-r during the TJA was significantly and moderately greater in the circa-peak height velocity (PHV) group compared with the post-PHV cohorts (169.4° [6.4°] vs 175.3° [7.8°]; P < .05; ES = 0.49). Whole-group data showed moderate relationships for FPPA-r and FPPA-l between the TJA and DVJ; however, stronger relationships were shown in circa- and post-PHV players compared with the pre-PHV cohort. Conclusions: Considering that the TJA exposed players to a larger FPPA and was sensitive to between-group differences in FPPA-r, the TJA could be viewed as a more suitable screen for identifying FPPA in young male soccer players.

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Section: Discussionmentioning

confidence: 97%

Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening

Lloyd¹,

Oliver²,

Myer³

et al. 2020

Journal of Sport Rehabilitation

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“…27 Over the past few years, variations of classical hop tests have been added: the drop jump test, side hop test, and vertical hop test. 12,17 The literature typically describes clinical assessments conducted in an organized and comprehensive manner at various periods during the rehabilitation process. This includes the battery of hop tests at 6, 8, and 10 months postoperatively.…”

Section: Discussionmentioning

confidence: 99%

When Is It Safe to Return to Sport After ACL Reconstruction? Reviewing the Criteria

Kaplan

Witvrouw

2019

Sports Health: A Multidisciplinary Approach

106

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Context: There is an ever-increasing trend toward sports, fitness, and recreation activities, so the incidence of anterior cruciate ligament sports injuries has increased. Perhaps the greatest challenge for sports clinicians is to return the injured athlete back to his/her original sport at an even greater level of functional ability than preinjury. For this, rigorous and well-researched criteria are needed. Evidence Acquisition: Using medical subject headings and free-text words, an electronic search was conducted up to October 2018. Subject-specific search was based on the terms return to play and return to sport in combination with guidelines, criteria, and anterior cruciate ligament reconstruction. Study Design: Descriptive review. Level of Evidence: Level 2. Results: Five principal criteria were found, including psychological factors, performance/functional tests, strength tests, time, and modifiable and nonmodifiable risk factors. Conclusion: The psychological readiness of the player is a major factor in successful safe return to sport (SRTS) decision making. Although strength, performance, and functional tests presently form the mainstay of SRTS criteria, there exists very little scientific evidence for their validity. More protection should be provided to athletes with known risk factors. Movement quality is important, if not more important than the quantifiable measures. As a result of the significantly high rerupture rate in young individuals, delayed SRTS should be considered preferably beyond 9 months postsurgery.

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“…Based on kinematic and kinetic performance traits and anatomical variables, an algorithm has been designed using the DVJ to evaluate the cumulative risk of non-contact ACL injury [10]. The DVJ has thus been used as a method of evaluating the risk of ACL injury in various studies [11–22]. Although, the DVJ is a double-limb landing task, limb asymmetry, which is an established factor for repeated ACL injury, is evident during this test [2].…”

Section: Introductionmentioning

confidence: 99%

Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump

et al. 2019

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BackgroundNeuromuscular imbalance will lead to loading asymmetry in sporting activities. This asymmetry is related to leg dominance, which has been associated with increased risk of anterior cruciate ligament (ACL) injury. Therefore, potential biomechanical differences between legs are important. However, little attention has been paid to the biomechanical details of leg dominance. The purpose of the present study was to clarify the relationship between leg dominance and knee biomechanics in females with different activity level during dynamic athletic tasks.MethodsA total of 23 female collegiate (mean age = 19.6 ± 1.4 years, mean body mass index = 21.5 ± 0.9) and 19 recreational athletes (mean age = 20.7 ± 1.1 years, mean body mass index = 20.5 ± 1.7) were enrolled. Tegner activity scores of the collegiate and recreational athletes were 9 and 7, respectively. Knee kinematic and kinetic asymmetries between the dominant (DL) and non-dominant (NDL) legs during the landing phase of drop vertical jump (DVJ) were assessed using three-dimensional motion analysis in collegiate and recreational athletes separately. Statistical comparison was done using two-tailed paired t test between DL and NDL in each athlete.ResultsThe peak knee abduction angle was significantly larger on the DL than on the NDL in collegiate athletes. Knee abduction angle at initial contact (IC), peak knee abduction angle, knee internal rotation angle at IC, and peak knee internal rotation angle were significantly larger on the NDL than on the DL in recreational athletes. Moreover, peak knee abduction moment within 40 ms from IC was larger on the NDL than on the DL in recreational athletes, while the moment was not significantly different in collegiate athletes.ConclusionsFrom the present study, the relationship between leg dominance and knee biomechanics was totally different in females with different activity level. Specifically, asymmetry of the knee abduction angle between limbs was opposite between female recreational and collegiate athletes. According to previous literatures, abduction and internal rotation angles as well as abduction moment were key issues for mechanism of non-contact ACL injury. Therefore, the NDL in female recreational athletes was associated with increased risk of ACL injury.

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Frontal plane comparison between drop jump and vertical jump: implications for the assessment of ACL risk of injury

Cited by 21 publications

References 29 publications

Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening

Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening

When Is It Safe to Return to Sport After ACL Reconstruction? Reviewing the Criteria

Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump

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