Muscle activation of the quadriceps and hamstrings during incremental running.

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 Nerve

journal_title

Muscle & nerve

authors

Camic CL,Kovacs AJ,Enquist EA,McLain TA,Hill EC

doi

10.1002/mus.24901

subject

Has Abstract

pub_date

2015-12-01 00:00:00

pages

1023-9

issue

6

eissn

0148-639X

issn

1097-4598

journal_volume

52

pub_type

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