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Lower Limb Muscle Activation In Young Adults Walking In Water And On Land, Christopher Long, Christopher J. Dakin, Sara A. Harper, Joonsun Park, Aaron Folau, Mark Crandall, Nathan Christensen, Talin Louder
Lower Limb Muscle Activation In Young Adults Walking In Water And On Land, Christopher Long, Christopher J. Dakin, Sara A. Harper, Joonsun Park, Aaron Folau, Mark Crandall, Nathan Christensen, Talin Louder
Kinesiology and Health Science Faculty Publications
Previous research has shown that exercise interventions requiring increased activation of the tibialis anterior (TA), the primary ankle dorsiflexor, can improve walking performance in individuals with foot drop. Correspondingly, heightened drag forces experienced during walking performed in water may augment TA activation during the swing phase of gait, potentially leading to improved walking gait on land. Therefore, this study aimed to compare surface electromyographic (sEMG) activation in the TA and medial gastrocnemius (GM) during gait performed in water versus on land. Thirty-eight healthy, recreationally active young adults, comprising 18 females and 20 males, participated in the study. Each participant completed …
Interaction Between Age And Fatigue On Antagonist Muscle Coactivation During An Acute Post-Fatigue Recovery Phase, Sara A. Harper, Brennan J. Thompson
Interaction Between Age And Fatigue On Antagonist Muscle Coactivation During An Acute Post-Fatigue Recovery Phase, Sara A. Harper, Brennan J. Thompson
Kinesiology and Health Science Faculty Publications
This study investigated the age-related changes in antagonist muscle coactivation of the biceps femoris (BF) during an acute recovery period following a leg extensor fatiguing protocol. Twenty-three young (mean ± SD: age = 25.1 ± 3.0 years) and twenty-three old men (age = 71.5 ± 3.9 years) participated. Surface electromyography (sEMG) was recorded from the BF muscles for antagonist muscle coactivation. Testing invovled participants performing leg extension isometric maximal voluntary contractions (MVCs) and isokinetic MVCs at 240°•s-1 at baseline (Pre) and again after the fatigue protocol at 0 (Post0), 7 (Post7), 15 (Post15), and 30 (Post30) minutes post fatigue. …