Changes in landing biomechanics during a fatiguing landing activity

Madigan, Michael L.; Pidcoe, Peter E.

doi:10.1016/s1050-6411(03)00037-3

Cited by 147 publications

(160 citation statements)

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“…3 Compared with other movements, the ground reaction forces are relatively small, 4 with magnitudes up to 2.32 3 body weight (BW) and an impact load rate of 113 3 BW/s. 5 It has been suggested 1,[6][7][8][9] that when these impact loads are exerted continuously during repetitive running cycles, then injury risk might increase. For this reason, the biomechanics of fatigued running have been thoroughly investigated.…”

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confidence: 99%

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Muscle Coactivation Before and After the Impact Phase of Running Following Isokinetic Fatigue

Kellis

Zafeiridis

Amiridis

2011

Journal of Athletic Training

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Context: The effects of fatigue on impact loading during running are unclear, with some authors reporting increased impact forces and others reporting decreased forces.Objective: To examine the effects of isokinetic fatigue on muscle cocontraction ratios about the knee and ankle during running.Design: Cross-sectional study. Setting: Neuromechanics laboratory.Patients or Other Participants: Female middle-distance runners (age 5 21.3 6 1.93 years) with at least 5 years of training experience.Intervention(s): Participants ran on the treadmill at 3.61 m/s before and immediately after the fatigue protocol, which consisted of consecutive, concentric knee extension-flexion at 1206/s until they could no longer produce 30% of the maximum knee-extension moment achieved in the familiarization session for 3 consecutive repetitions.Main Outcome Measure(s): Electromyographic (EMG) amplitude of the vastus medialis (VM), biceps femoris (BF), gastrocnemius (GAS), and tibialis anterior (TA) was recorded using surface electrodes. Agonist:antagonist EMG ratios for the knee (VM:BF) and ankle (GAS:TA) were calculated for the preactivation (PR), initial loading response (LR 1 ), and late loading response (LR 2 ) phases of running. Hip-, knee-, and ankle-joint angular displacements at initial foot contact were obtained from 3-dimensional kinematic tracings.Results: Fatigue did not alter the VM:BF EMG ratio during the PR phase (P . .05), but it increased the ratio during the LR 1 phase (P , .05). The GAS:TA EMG ratio increased during the LR 1 phase after fatigue (P , .05) but remained unchanged during the PR and LR 2 phrases (P . .05).Conclusions: The increased agonist EMG activation, coupled with reduced antagonist EMG activation after impact, indicates that the acute decrease in muscle strength capacity of the knee extensors and flexors results in altered muscleactivation patterns about the knee and ankle before and after foot impact.Key Words: biomechanics, muscle fatigue, joint stability Key PointsN After an isokinetic fatigue protocol for the knee-extensor and knee-flexor muscles, participants contacted the ground with a greater knee-flexion angle.N An antagonist inhibition strategy about the knee and ankle was noted, as was a quadriceps-dominant strategy during the preactivation and initial contact phases of running.

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“…Third, evidence suggests that landing or hopping fatigue can redistribute the work produced around the lower limb joints 6 or change muscle-coactivation patterns in several joints. 27 To our knowledge, muscle-coactivation strategies in more than 1 joint during running under fatigue conditions have not been investigated.…”

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Muscle Coactivation Before and After the Impact Phase of Running Following Isokinetic Fatigue

Kellis

Zafeiridis

Amiridis

2011

Journal of Athletic Training

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“…During the sustained muscular contraction or the performance of repetitions, the muscle may face exhaustion and fail to maintain the desired strength, power or work (18,19) . Therefore, muscular fatigue is considered progressive loss in the generation of muscular strength, or decline in the development of strength through progression of the number of repetitions (18) and can also affect many other factors related to human performance: movement coordination, accuracy, reaction time and proprioceptive capacities (19)(20)(21) . Several studies report the effect of unilateral or bilateral fatigue in tasks of same characteristic (e.g.…”

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confidence: 99%

Influência da fadiga unilateral de membro inferior sobre o salto vertical bilateral

Marchetti

Uchida

2011

Rev Bras Med Esporte

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It is common to observe bilateral strength deficit during the vertical jump. This is characterized by lower strength produced during bilateral contractions, when compared to the sum of the unilateral contractions of similar muscles. There is not much scientific knowledge about the effect of unilateral fatigue on bilateral activities. The aim of this study was to investigate the effect of unilateral fatigue on bilateral deficit performance during bipedal vertical jump. Ten sedentary young adults unilaterally fatigued each lower limb and performed vertical jumps (bipedal and unipedal). We measured the vertical ground reaction force and myoelectrical activity to each lower limb and conditions (pre-fatigue, fatigue of the dominant limb (DF) and non dominant limb (NDF) were measured. Differences between tasks and conditions only on the pre-fatigue (p=0.030) were observed. Differences were observed for the bipedal vertical jump between pre-fatigue and DF (p=0.005), and unipedal vertical jump between pre-fatigue and DF (p<0.001) and NDF (p<0.001). We only observed change on the performance of bipedal vertical jump during the DF condition. We observed a trend to the asymmetry index decrease for the muscular action of the fatigued contralateral lower limb by electromyography. The results suggest that there is a common command where the nervous system considers the muscles simultaneously activated as a unit, except in conditions of unilateral lower limb fatigue.

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“…in maximal force generating capacity, irrespective of the force required for a specified task [1][2][3][4][5][6][7][8] . Force production, movement coordination, motor control precision, muscle reaction times and proprioception have all been reported to be negatively affected by fatigue [1][2][3] .…”

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confidence: 99%

“…Force production, movement coordination, motor control precision, muscle reaction times and proprioception have all been reported to be negatively affected by fatigue [1][2][3] . These factors that are altered can be considered decrements in performance that may also contribute to the risk of injury through the inability to attenuate force and stabilize a joint [1,9] . While the effects of fatigue have been widely examined in the literature, data are lacking on the sport of team handball.…”

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The effects of aerobic fatigue on jump shot kinematics in team handball players

Plummer

Oliver

2015

JBEI

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Background: Aerobic fatigue from running may contribute to altered kinematics and as a result the possibility of injury exists. The purpose of this study was to examine the effects of aerobic fatigue on jump shot kinematics in team handball players. Methods:Ten male team handball players (23.60 ± 3.06 years; 184.68 ± 8.78 cm; 84.76 ± 9.23 kg) volunteered. An electromagnetic tracking system was used to examine the kinematics of the jump shot prior to and following aerobic fatigue. The fatiguing protocol consisted of running to exhaustion at a speed that corresponded with 80% of their heart rate maximum.Results: Significant pelvis and trunk kinematic differences were observed following the aerobic fatigue protocol. For both the trunk (F 6, 54 = 5.10; P < .01; power = 0.99) and pelvis (F 3, 27 = 14.47; P < .01; power = 1.00) a three-way interaction of event x time x direction was observed. At foot contact, significant differences were observed for pelvis lateral flexion, pelvis rotation, and trunk flexion. The pelvis was positioned with greater lateral flexion to the contralateral side (-1.25° ± 3.41° to -3.39° ± 4.14°) and increased contralateral pelvis rotation was observed (-43.07° ± 12.92° to -50.79° ± 12.26°). Pelvis lateral flexion towards the contralateral side was also significantly greater at ball release following fatigue (-21.90° ± 5.99° to -25.55° ± 7.79°). Trunk rotation significantly increased from -6.80° ± 10.07° to -12.55° ± 10.97° at maximum external rotation following fatigue. Conclusion:Altered mechanics were observed at the pelvis and trunk and these alterations may contribute to injury in team handball players as a player reaches fatigue.

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Changes in landing biomechanics during a fatiguing landing activity

Cited by 147 publications

References 24 publications

Muscle Coactivation Before and After the Impact Phase of Running Following Isokinetic Fatigue

Muscle Coactivation Before and After the Impact Phase of Running Following Isokinetic Fatigue

Influência da fadiga unilateral de membro inferior sobre o salto vertical bilateral

The effects of aerobic fatigue on jump shot kinematics in team handball players

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