Abstract:
INTRODUCTION:The aim of this study was to determine the patterns of responses for the electromyographic (EMG) amplitude vs. oxygen uptake ( V̇O2 ) relationships from muscles of the quadriceps femoris and hamstrings during incremental treadmill running. METHODS:Twelve men volunteered to perform an incremental test to exhaustion while EMG signals were recorded from the vastus lateralis, vastus medialis, biceps femoris, and semitendinosus muscles. Polynomial regression analyses were used to determine the best model fit for the EMG amplitude vs. V̇O2 relationships. RESULTS:There were significant (P < 0.05) increases in EMG amplitude across V̇O2 for the vastus lateralis (quadratic, R = 0.995), vastus medialis (quadratic, R = 0.997), biceps femoris (cubic, R = 0.999), and semitendinosus (linear, R = 0.992) muscles as well as the hamstrings-to-quadriceps ratio (cubic, R = 0.999). CONCLUSION:These findings indicate that the patterns of responses for muscle activation vs. exercise intensity appear to be unique among muscles of the thigh.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Camic CL,Kovacs AJ,Enquist EA,McLain TA,Hill ECdoi
10.1002/mus.24901subject
Has Abstractpub_date
2015-12-01 00:00:00pages
1023-9issue
6eissn
0148-639Xissn
1097-4598journal_volume
52pub_type
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