Abstract:
INTRODUCTION:In this study, we questioned whether local cooling of muscle or heating involving core and muscle temperatures are the main indicators for force variability. METHODS:Ten volunteers performed a 2-min maximum voluntary contraction (MVC) of the knee extensors under control (CON) conditions after passive heating (HT) and cooling (CL) of the lower body. RESULTS:HT increased muscle and rectal temperatures, whereas CL lowered muscle temperature but did not affect rectal temperature. During 2-min MVC, peak force decreased to a lower level in HT compared with CON and CL experiments. Greater central fatigue was found in the HT experiment, and there was less in the CL experiment than in the CON experiment. CONCLUSIONS:Increased core and muscle temperature increased physiological tremor and the amount and structural complexity of force variability of the exercising muscles, whereas local muscle cooling decreased all force variability variables measured.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Brazaitis M,Skurvydas A,Pukėnas K,Daniuseviciūtė L,Mickevicienė D,Solianik Rdoi
10.1002/mus.23397subject
Has Abstractpub_date
2012-11-01 00:00:00pages
799-809issue
5eissn
0148-639Xissn
1097-4598journal_volume
46pub_type
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