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The Effect of Exercise Priming on V̇O2 Kinetics, Muscle Torque Complexity and Exercise Tolerance during Intermittent Isometric Contractions.

Hoskin, Lucy (2019) The Effect of Exercise Priming on V̇O2 Kinetics, Muscle Torque Complexity and Exercise Tolerance during Intermittent Isometric Contractions. Master of Science by Research (MScRes) thesis, University of Kent,. (KAR id:81502)

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Abstract

Exercise priming can alter V̇O2 kinetics and improve the performance of subsequent exhaustive heavy exercise. During fatiguing isometric exercise there is a reduction in the

kinetics, muscle torque complexity and exercise tolerance during intermittent isometric exercise.

There was no difference in the time to task failure between primed and non-primed exercise. There was a higher EMG amplitude at the start of the primed exhaustive bout compared to the non-primed exercise bout. The V̇O2 response to exhaustive exercise was not different between the primed and non-primed conditions. Peripheral fatigue was present at the onset of exercise following priming and a significant loss of muscle torque complexity with priming.

There was no improvement in performance of subsequent intermittent isometric contractions with prior exercise, nor was there change in the V̇O2 response. Loss of complexity could be attributed to the increase in arEMG at the onset of the exhaustive exercise, more specifically an increase in motor unit recruitment with the development of fatigue. These results suggest that there is some effect of high-intensity prior exercise on exhaustive isometric contractions of the knee extensors.

Item Type: Thesis (Master of Science by Research (MScRes))
Thesis advisor: Burnley, Mark
Thesis advisor: Winter, Samantha
Thesis advisor: Pethick, Jamie
Uncontrolled keywords: exercise, exercise priming, muscle torque complexity, V̇O2 kinetics, exercise tolerance, intermittent isometric contractions, knee extensors
Divisions: Divisions > Division of Natural Sciences > School of Sport and Exercise Sciences
SWORD Depositor: System Moodle
Depositing User: System Moodle
Date Deposited: 02 Jun 2020 17:10 UTC
Last Modified: 16 Feb 2021 14:13 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/81502 (The current URI for this page, for reference purposes)
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