Effect of Fatigue on Knee Kinetics and Kinematics in Stop-Jump Tasks

Chappell, Jonathan D.; Herman, Daniel C.; Knight, Bradford S.; Kirkendall, Donald T.; Garrett, William E.; Yu, Bing

doi:10.1177/0363546504273047

Cited by 292 publications

(373 citation statements)

References 34 publications

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“…Sagittal-plane knee mechanics were altered with fatigue; specifically, a decrease in knee flexion was seen at peak vertical ground reaction force, peak posterior ground reaction force, and peak knee flexion. Researchers who did not completely use a SLO-FP or FAST-FP but induced lower extremity fatigue found similar results for these kinematic variablesy, 12,20 An interesting result to note is the lack of difference between fatigue protocols (SLO-FP and FAST-FP). Most prefatigue to postfatigue changes were observed regardless of the fatigue protocol used, with minimal differences noted between the 2 protocols.…”

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confidence: 93%

“…ll ,12,20Chappell et al 12 found a decrease in knee flexion angle at peak proximal tibial anterior shear force in a stop-jump 12 We analyzed knee flexion at peak posterior ground reaction force and peak vertical ground reaction force, both of which have been shown to be correlated with peak proximal tibial anterior shear force,37 and found a decrease of 6.9% (prefatigue=-38.4°, postfatigue=-35.8°) and 7.4% (prefatigue= -38.8°, postfatigue =-35.9°), respectively. The percentage change for our study was smaller than the change reported by Chappell et al 12 The smaller decrease in knee flexion angle in our study could be a result of the increased level of conditioning and athletic ability present in our participants. However, the reduced knee flexion angle at peak posterior ground reaction force still might be increasing the load on the ACL, thereby increasing its likelihood of rupture.…”

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confidence: 99%

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Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Quammen

Cortés

Lunen

et al. 2012

Journal of Athletic Training

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Context: Altered neuromuscular control strategies during fatigue probably contribute to the increased incidence of noncontact anterior cruciate ligament injuries in female athletes.Objective: To determine biomechanical differences between 2 fatigue protocols (slow linear oxidative fatigue protocol [SLO-FP] and functional agility short-term fatigue protocol [FAST-FP]) when performing a running-stop-jump task. Design: Controlled laboratory study. Setting: Laboratory. Patients or Other Participants:A convenience sample of 15 female soccer players (age = 19.2 ± 0.8 years, height = 1.67 ± 0.05 m, mass = 61.7 ± 8.1 kg) without injury participated. Intervention(s):Five successful trials of a running-stopjump task were obtained prefatigue and postfatigue during the 2 protocols. For the SLO-FP, a peak oxygen consumption (V02peak) test was conducted before the fatigue protocol. Five minutes after the conclusion of the V02peak test, participants started the fatigue protocol by performing a 30-minute interval run. The FAST-FP consisted of 4 sets of a functional circuit. Repeated 2 (fatigue protocol) x 2 (time) analyses of variance were conducted to assess differences between the 2 protocols and time (prefatigue, postfatigue Conclusions: bur results demonstrated a more erect landing posture due to a decrease in hip and knee flexion angles in the postfatigue condition. The changes were similar between protocols; however, the FAST-FP was a clinically applicable 5-minute protocol, whereas the SLO-FP lasted approximately 45 minutes.Key Words: anterior cruciate ligament, hip, knee, biomechanics Key Points• Both the slow linear oxidative fatigue protocol (SLO-FP) and the functional agility short-term fatigue protocol (FAST-FP) demonstrated that the lower extremity is at a higher risk for sustaining injury when fatigue and unanticipated movement are combined.• Similar lower extremity biomechanical modifications occurred after 5 minutes of fatigue during the FAST-FP and after 45 minutes of fatigue during the SLO-FP.• Fatigue-induced decreases in hip and knee flexion resulted in a more extended landing posture, which can increase anterior tibial translation and thus increase strain on the anterior cruciate ligament.

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confidence: 93%

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confidence: 99%

Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Quammen

Cortés

Lunen

et al. 2012

Journal of Athletic Training

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“…Traditionally, knee loading has been quantified using an inverse dynamics approach to estimate the resultant forces at the tibiofemoral joint. 27 However, this approach does not consider muscle forces and their contributions to joint loading. 28 While several advanced methods (i.e., inverse dynamics optimization and forward dynamics) have been proposed to estimate individual muscle forces, 29,30 a common limitation of these approaches is the inability of predicting antagonist muscle forces because of the lack of information regarding muscle co-contraction.…”

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confidence: 99%

Greater muscle co‐contraction results in increased tibiofemoral compressive forces in females who have undergone anterior cruciate ligament reconstruction

Tsai

McLean

Colletti

et al. 2012

Journal Orthopaedic Research

114

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Individuals who have undergone ACL reconstruction (ACLR) have been shown to have a higher risk of developing knee osteoarthritis (OA). The elevated risk of knee OA may be associated with increased tibiofemoral compressive forces. The primary purpose of this study was to examine whether females with ACLR demonstrate greater tibiofemoral compressive forces, as well as greater muscle co-contraction and decreased knee flexion during a single-leg drop-land task when compared to healthy females. Ten females with ACLR and 10 healthy females (control group) participated. Each participant underwent two data collection sessions: (1) MRI assessment and (2) biomechanical analysis (EMG, kinematics, and kinetics) during a single-leg drop-land task. Joint kinematics, EMG, and MRI-measured muscle volumes and patella tendon orientation were used as input variables into a MRI-based EMGdriven knee model to quantify the peak tibiofemoral compressive forces during landing. Peak tibiofemoral compressive forces were significantly higher in the ACLR group when compared to the control group (97.3 AE 8.0 vs. 88.8 AE 9.8 N Á kg À1 ). The ACLR group also demonstrated significantly greater muscle co-contraction as well as less knee flexion than the control group. Our findings support the premise that individuals with ACLR demonstrate increased tibiofemoral compression as well as greater muscle co-contraction and decreased knee flexion during a drop-land task. Future studies are needed to examine whether correcting abnormal neuromuscular strategies and reducing tibiofemoral compressive forces following ACLR can slow the progression of joint degeneration in this population. ß

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“…However, little scientific study has studied other functional abilities. The vertical jump, for example, is an important functional activity that is commonly applied in training and rehabilitation 11 . Mechanical loading during childhood, based on jumping activities, for example, plays a critical role in normal growth and development of the skeleton 7 .…”

Section: Discussionmentioning

confidence: 99%

“…In preparation for the CVJ that demands high angular amplitude 11 , CF children had a limitation in ankle movement that can be caused by the residual stiffness within the foot that is characteristic of the pathology's evolution. This restriction on movement was used by Davies, Kiefer, Zernicke 2 to explain, in gait analysis, reduced plantarflexion during push-off for CF groups.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Parameters in Children with Unilateral and Bilateral Clubfoot during Vertical Jumps

Soares

Cerqueira

Mochizuki

et al. 2017

Motriz: rev. educ. fis.

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-Gait analysis may offer information to choose the best exercise-based clinical intervention for the children with clubfoot. However, other motor abilities are not commonly investigated. The aim of this research was to analyze the biomechanics of countermovement vertical jumping in clubfooted children who had undergone surgery. Fourteen children with idiopathic clubfoot were selected and the control group consisted of 11 children. Clubfooted children showed less dorsiflexion in the jump preparation phase. In the impulse phase, this group showed more knee flexion and less plantarflexion associated with less magnitude of vertical reaction force and less muscular activity in the gastrocnemius medialis. In the landing phase, for clubfoot group, we found high loading rate for the first peak of vertical force, less plantarflexion and more knee flexion. Understanding the biomechanical changes of vertical jump landing should assist in better targeting of physical and sporting activities of this population.

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Effect of Fatigue on Knee Kinetics and Kinematics in Stop-Jump Tasks

Cited by 292 publications

References 34 publications

Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Greater muscle co‐contraction results in increased tibiofemoral compressive forces in females who have undergone anterior cruciate ligament reconstruction

Biomechanical Parameters in Children with Unilateral and Bilateral Clubfoot during Vertical Jumps

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