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Full-Text Articles in Life Sciences
Evidence For The Use Of Dynamic Maximum Normalization Method Of Muscle Activation During Weight Back Squats, Eva Maddox, Hunter J. Bennett
Evidence For The Use Of Dynamic Maximum Normalization Method Of Muscle Activation During Weight Back Squats, Eva Maddox, Hunter J. Bennett
College of Education & Professional Studies (Darden) Posters
The purpose of this study was to evaluate intra and inter-participant variability and reliability of muscle activations when analyzed using maximum voluntary isometric contractions (MVIC) and dynamic maximum (DMVC) normalization methods. Muscle activations were collected on twenty-seven participants (13 females, 14 males) performing one-repetition maximum (1RM) and submaximum (80%) back squats. Data from submaximum squats were normalized to MVICs and DMVCs. Data were compared using intra-class correlations over two testing days, variance ratio, and coefficients of variation. Mixed-model ANOVAs were used to elucidate the influence on intra- (method) and inter- (sex) subject variability. Reliability levels were good for rectus femoris …
Emg Analysis Of Core And Thigh Musculature Contribution During Double And Single Leg Squats On Both Stable And Unstable Surfaces, Julie M. Whitehead
Emg Analysis Of Core And Thigh Musculature Contribution During Double And Single Leg Squats On Both Stable And Unstable Surfaces, Julie M. Whitehead
Human Movement Sciences & Special Education Theses & Dissertations
The purpose of this study was to determine EMG activity of the hip stabilizers, thigh, and core muscles during various squatting exercises in order to better appreciate the contribution of the core and thigh during weight bearing functional activity. Surface EMG electrodes were placed over the rectus abdominis (RA), internal oblique (IO), external oblique (EO), erector spinae (ES), vastus medialis (VM), biceps femoris (BF), and gluteus medius (GM). The right leg was used for any single leg exercises perforn1ed. Each subject performed three double leg and three single leg un-weighted squats to 60 degrees of knee flexion on a stable …
Comparison Of The Emg Activity Of The Supraspinatus And Infraspinatus Muscles During Various Closed Chain Exercises, I-Chen Lin
Rehabilitation Sciences Theses & Dissertations
Advantages of closed chain exercises used in the lower extremity have been well documented. However, the effects of closed chain exercises on the upper extremities have not been studied very much. Thus, the purpose of this research is to analyze the EMG activity of the supraspinatus and infraspinatus muscles and compare the relative amounts of activities by performing different isotonic closed chain exercises and an open chain exercise in normal subjects. The supraspinatus and infraspinatus muscles in 1 o healthy subjects were studied with fine wire, intramuscular, electromyographic electrodes while performing 5 closed chain exercises and a D2. open chain …