Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise
Thesis (M.Phys.Ed.)--Memorial University of Newfoundland, 2002. Human Kinetics and Recreation Bibliography: leaves 66-76. The primary goal of this study was to investigate the interaction effects of 22°C local muscle temperature on the recovery of specific evoked and voluntary contractile properties...
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ftmemorialunivdc:oai:collections.mun.ca:theses5/1966 2023-05-15T17:23:34+02:00 Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise Drinkwater, Eric J., 1972- Memorial University of Newfoundland. School of Human Kinetics and Recreation 2001 xviii, 97 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses5/id/1966 Eng eng Electronic Theses and Dissertations (12.51 MB) -- http://collections.mun.ca/PDFs/theses/Drinkwater_EricJ.pdf a1561072 http://collections.mun.ca/cdm/ref/collection/theses5/id/1966 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Cold--Physiological effect Exercise--Physiological aspects Fatigue Muscles--Physiology Text Electronic thesis or dissertation 2001 ftmemorialunivdc 2015-08-06T19:22:48Z Thesis (M.Phys.Ed.)--Memorial University of Newfoundland, 2002. Human Kinetics and Recreation Bibliography: leaves 66-76. The primary goal of this study was to investigate the interaction effects of 22°C local muscle temperature on the recovery of specific evoked and voluntary contractile properties in intact human plantar flexors at 1-. 5-. and 10-minutes after high intensity, isometric exercise. The secondary goal of this study was to validate previous studies and add to the body of knowledge about the main effects of recovery from fatigue with homeostatic temperature and the main effects of local hypothermia on unfatigued muscle on evoked and voluntary contractile properties in intact human plantar flexors. Twelve subjects were tested for muscle voluntary and evoked contractile properties prior to fatigue (i.e. pre-fatigue), fatigued using intermittent, high-intensity, isometric contraction, and then retested at 1-. 5-. and 10-minutes post-fatigue conditions under localized hypothermic and normothermic conditions. Voluntary properties of the plantar flexor muscles were monitored by measuring the force of a maximal voluntary isometric contraction, as well as muscle activation derived from the interpolated twitch technique (ITT) and integrated electromyographic (iEMG) activity. Evoked contractile properties included the force and temporal characteristics of a maximal twitch and titanic contraction of the plantar flexor muscles. Data were analyzed with a 2-way repeated measures ANOVA for main effects of a) hypothermic and normothermic conditions, b) prefatigue and at post-fatigue intervals, and c) interactions between hypothermic and normothermic pre- and post-fatigue intervals. During recovery from high intensity-intermittent fatigue there was a general augmentation of evoked properties of the plantar flexors with a deceleration and decrease of the force of voluntary properties. Hypothermia had little effect on all but the temporal characteristics of the plantar flexor muscles, which were slowed by cold. The effect of cold on the rate of recovery of the plantar flexor muscles was generally not significant. Thus it may be concluded that local muscle hypothermia does not impair recovery of voluntary and evoked contractile properties of the plantar flexors from high intensity exercise. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Cold--Physiological effect Exercise--Physiological aspects Fatigue Muscles--Physiology |
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Cold--Physiological effect Exercise--Physiological aspects Fatigue Muscles--Physiology Drinkwater, Eric J., 1972- Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
topic_facet |
Cold--Physiological effect Exercise--Physiological aspects Fatigue Muscles--Physiology |
description |
Thesis (M.Phys.Ed.)--Memorial University of Newfoundland, 2002. Human Kinetics and Recreation Bibliography: leaves 66-76. The primary goal of this study was to investigate the interaction effects of 22°C local muscle temperature on the recovery of specific evoked and voluntary contractile properties in intact human plantar flexors at 1-. 5-. and 10-minutes after high intensity, isometric exercise. The secondary goal of this study was to validate previous studies and add to the body of knowledge about the main effects of recovery from fatigue with homeostatic temperature and the main effects of local hypothermia on unfatigued muscle on evoked and voluntary contractile properties in intact human plantar flexors. Twelve subjects were tested for muscle voluntary and evoked contractile properties prior to fatigue (i.e. pre-fatigue), fatigued using intermittent, high-intensity, isometric contraction, and then retested at 1-. 5-. and 10-minutes post-fatigue conditions under localized hypothermic and normothermic conditions. Voluntary properties of the plantar flexor muscles were monitored by measuring the force of a maximal voluntary isometric contraction, as well as muscle activation derived from the interpolated twitch technique (ITT) and integrated electromyographic (iEMG) activity. Evoked contractile properties included the force and temporal characteristics of a maximal twitch and titanic contraction of the plantar flexor muscles. Data were analyzed with a 2-way repeated measures ANOVA for main effects of a) hypothermic and normothermic conditions, b) prefatigue and at post-fatigue intervals, and c) interactions between hypothermic and normothermic pre- and post-fatigue intervals. During recovery from high intensity-intermittent fatigue there was a general augmentation of evoked properties of the plantar flexors with a deceleration and decrease of the force of voluntary properties. Hypothermia had little effect on all but the temporal characteristics of the plantar flexor muscles, which were slowed by cold. The effect of cold on the rate of recovery of the plantar flexor muscles was generally not significant. Thus it may be concluded that local muscle hypothermia does not impair recovery of voluntary and evoked contractile properties of the plantar flexors from high intensity exercise. |
author2 |
Memorial University of Newfoundland. School of Human Kinetics and Recreation |
format |
Thesis |
author |
Drinkwater, Eric J., 1972- |
author_facet |
Drinkwater, Eric J., 1972- |
author_sort |
Drinkwater, Eric J., 1972- |
title |
Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
title_short |
Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
title_full |
Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
title_fullStr |
Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
title_full_unstemmed |
Effects of 22°C muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
title_sort |
effects of 22°c muscle temperature on the rate of recovery of voluntary and evoked contractile properties of the plantar flexor after high intensity exercise |
publishDate |
2001 |
url |
http://collections.mun.ca/cdm/ref/collection/theses5/id/1966 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (12.51 MB) -- http://collections.mun.ca/PDFs/theses/Drinkwater_EricJ.pdf a1561072 http://collections.mun.ca/cdm/ref/collection/theses5/id/1966 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
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