Role of the coordinated activities of trunk and lower limb muscles during the landing-to-jump movement

Iida, Yoshiaki; Kanehisa, Hiroaki; Inaba, Yuki; Nakazawa, Kimitaka

doi:10.1007/s00421-011-2199-2

Cited by 18 publications

(14 citation statements)

References 50 publications

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“…The VM and ST activations during the flight phase were analyzed using the %MVIC data. The flight phase was defined as 100 ms before landing to the IC (20,22,31,32). Co-contraction between the VM and ST during the flight phase was extracted and calculated using the co-contraction index (CCI), as recommended by Falconer and Winter (19,33).…”

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confidence: 99%

Correlations Between Vertical Ground Reaction Force, Sagittal Joint Angles, and the Muscle Co-Contraction Index During Single-Leg Jump-Landing

et al. 2019

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Background: Impact and lower extremity joint angles during landing are factors that can increase the risk of anterior cruciate ligament injuries. However, the correlations between these factors and lower extremity muscle activation during the flight phase, which may affect these factors, are unknown. Objectives: The present study aimed to clarify the correlations between the peak vertical ground reaction force (pVGRF), sagittal joint angles during the landing phase, and the vastus medialis (VM) and semitendinosus (ST) muscle co-contraction index (CCI) during the flight phase in single-leg jump-landing. Methods: Fourteen healthy, physically active volunteers (age, 22.6 ± 2.7 years; height, 164.4 ± 7.6 cm; body weight, 58.9 ± 8.9 kg; body mass index, 21.7 ± 2.3 kg/m 2) participated. All subjects performed a single-leg jump-landing task. The pVGRF variables and the sagittal joint angles during the landing phase were measured. The CCI between the VM and ST during the flight phase was measured. The correlations between the VGRF variables, sagittal joint angles, and CCI were assessed using Spearman's rank correlation coefficient. Results: The knee flexion angle at the pVGRF was negatively correlated with the magnitude of pVGRF (ρ =-0.609, P = 0.021). The knee flexion angle at the pVGRF was negatively correlated with the CCI during the flight phase in single-leg jump-landing (ρ =-0.627, P = 0.016). Conclusions: An excessive CCI between the VM and ST during the flight phase might be indirectly related to a greater landing impact after a single-leg jump.

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confidence: 99%

Correlations Between Vertical Ground Reaction Force, Sagittal Joint Angles, and the Muscle Co-Contraction Index During Single-Leg Jump-Landing

et al. 2019

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“…Previous studies in landing have identi ed that trunk and lower extremity joint movements and neuromuscular activity are coordinated to effectively perform landing shock absorption (54,55). With reduced lower limb joint movements and disrupted inter-joint timing observed in participants with stroke, it is likely that more energy dissipation was required at the upper body.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Control of Paretic Lower Limb During Imposed Weight Transfer in Individuals Post-Stroke

Hsiao

Gray

Borrelli

et al. 2020

Preprint

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Background: stroke is a leading cause of disability with associated hemiparesis resulting in difficulty bearing and transferring weight on to the paretic limb. Difficulties in weight bearing and weight transfer may result in impaired mobility and balance, increased fall risk, and decreased community engagement. Despite considerable efforts aimed at improving weight transfer after stroke, impairments in its neuromotor and biomechanical control remain poorly understood. In the present study, a novel experimental paradigm was used to characterize differences in weight transfer biomechanics in individuals with chronic stroke versus able-bodied controls. Methods: fifteen participants with stroke and fifteen age-matched able-bodied controls participated in the study. Participants stood with one foot on each of two custom built platforms. One of the platforms dropped 4.3 cm vertically to induce lateral weight transfer and weight bearing. Paretic lower extremity joint kinematics, vertical ground reaction forces, and center of pressure velocity were measured. All participants completed the clinical Step Test and Four-Square Step Test. Results: reduced paretic ankle, knee, and hip joint angular displacement and velocity, delayed ankle and knee inter-joint timing, and altered center of pressure (COP) and center of mass control were exhibited in the stroke group compared to the control group. In addition, paretic COP velocity stabilization time during induced weight transfer predicted Four-Square Step Test scores in individuals post-stroke. Conclusions: the induced weight transfer approach identified stroke-related abnormalities in the control of weight transfer towards the paretic limb side compared to controls. Decreased joint flexion of the paretic ankle and knee, altered inter-joint timing, and altered COP and center of mass control appear to limit rapid lower limb loading ability. Future work will investigate the potential of improving functional weight transfer through induced weight transfer training exercise.

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“…The human trunk is associated with the transfer of energy and the connection of movements between the lower and upper body 15 , 16 ) . Therefore, the ability to execute exercises such as jumping or squatting can differ depending on the location of the trunk, vertical stiffness, and muscle activity 17 , 18 ) .…”

Section: Discussionmentioning

confidence: 99%

Activation of back and lower limb muscles during squat exercises with different trunk flexion

2016

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[Purpose] The purpose of this study was to investigate the activation of back and lower limb muscles in subjects who were performing a squat exercise at different angles of trunk flexion. [Subjects and Methods] Twenty healthy subjects (age 21.1± 1.8 years, height 168.7 ± 8.2 cm, weight 66.1 ± 12.3 kg) volunteered. The activation of the erector spinae muscle, rectus femoris muscle, gluteus maximus muscle and biceps femoris muscle was observed while the subjects performed squat exercises with a trunk flexion of 0°, 15°, and 30°. [Results] The erector spinae muscle, gluteus maximus muscle, and biceps femoris muscle were activated more during the squat exercise with the trunk flexion at 30° than the exercise with the trunk flexion at 0°. The rectus femoris muscle showed a tendency to decrease as the truck flexion increased. [Conclusion] Squat exercise be executed while maintaining an erect trunk posture if one wishes to strengthen the quadriceps muscle while reducing the load on the lower back.

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Role of the coordinated activities of trunk and lower limb muscles during the landing-to-jump movement

Cited by 18 publications

References 50 publications

Correlations Between Vertical Ground Reaction Force, Sagittal Joint Angles, and the Muscle Co-Contraction Index During Single-Leg Jump-Landing

Correlations Between Vertical Ground Reaction Force, Sagittal Joint Angles, and the Muscle Co-Contraction Index During Single-Leg Jump-Landing

Biomechanical Control of Paretic Lower Limb During Imposed Weight Transfer in Individuals Post-Stroke

Activation of back and lower limb muscles during squat exercises with different trunk flexion

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