Effects of self-regulatory strength depletion on muscular performance and EMG activation

The purpose of the present study was to examine the effects of a self‐regulatory strength depletion manipulation on performance of a physical endurance (isometric handgrip) task. In addition, the effect of depletion on EMG activity in the working forearm muscles during the endurance task was explore...

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Veröffentlicht in:	Psychophysiology 2008-03, Vol.45 (2), p.337-343
Hauptverfasser:	Bray, Steven R., Martin Ginis, Kathleen A., Hicks, Audrey L., Woodgate, Jennifer
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Affect Central fatigue hypothesis Cognition & reasoning College students Electromyography Exercise - physiology Female Hand Strength - physiology Humans Isometric Contraction - physiology Isometric exercise Male Muscle Strength - physiology Muscle, Skeletal - physiology Muscular system Neurosciences Physical Endurance - physiology Psychology Psychomotor Performance - physiology Self-control Willpower
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Zusammenfassung:	The purpose of the present study was to examine the effects of a self‐regulatory strength depletion manipulation on performance of a physical endurance (isometric handgrip) task. In addition, the effect of depletion on EMG activity in the working forearm muscles during the endurance task was explored. Sedentary undergraduates (N=49) were randomly assigned to either a cognitive depletion condition (modified Stroop task) or a control (color word) group and completed two maximal isometric exercise endurance trials separated by the cognitive task. Participants in the depletion group showed significant (p
ISSN:	0048-5772 1469-8986 1540-5958
DOI:	10.1111/j.1469-8986.2007.00625.x