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Quantifying the immediate recovery energy expenditure of resistance training.
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Quantifying the immediate recovery energy expenditure of resistance training.

Author: CB Scott Affiliation: Exercise Health and Sport Sciences, University of Southern Maine, Gorham, Maine, USA. cscott@usm.maine.edu
Edition/Format: Article Article : English
Publication:Journal of strength and conditioning research / National Strength & Conditioning Association, 2011 Apr; 25(4): 1159-63
Database:From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
Other Databases: ElsevierBritish Library Serials
Summary:
As opposed to steady state aerobic-type exercise involving long duration, continuous, rhythmic, large muscle group activities that consume large volumes of oxygen, a resistance training set is brief, intermittent, uses multiple and isolated muscles, and is considered anaerobic in description. Because differences are evident between aerobic- and anaerobic-type exercise, it is proposed that the methods used for  Read more...
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Details

Document Type: Article
All Authors / Contributors: CB Scott Affiliation: Exercise Health and Sport Sciences, University of Southern Maine, Gorham, Maine, USA. cscott@usm.maine.edu
ISSN:1064-8011
Language Note: English
Unique Identifier: 711324565
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Abstract:

As opposed to steady state aerobic-type exercise involving long duration, continuous, rhythmic, large muscle group activities that consume large volumes of oxygen, a resistance training set is brief, intermittent, uses multiple and isolated muscles, and is considered anaerobic in description. Because differences are evident between aerobic- and anaerobic-type exercise, it is proposed that the methods used for estimating resistance training energy expenditure should be different as compared with walking, jogging, cycling, etc. After a single set of weight lifting, for example, oxygen uptake is greater in the recovery from lifting as opposed to during the actual exercise; likewise, the anaerobic energy expenditure contribution to lifting may exceed exercise oxygen uptake. Recovery energy expenditure also does not appear well related to the anaerobic energy expenditure of the previous exercise. Based on this evidence, it is suggested that anaerobic-type exercise should not be based on aerobic-type models. In terms of excess postexercise oxygen consumption, a hypothesis is presented in regard to how non-steady-state energy expenditure in the immediate recovery from intense exercise should be properly quantified (e.g., in-between resistance training sets). The proposed concept is based on possible substrate or fuel use differences during intense exercise and aerobic recovery and the biochemistry and bioenergetics of glucose, lactate, and fat oxidation. It is proposed that immediately after a single weight lifting bout or in-between resistance training sets, as O2 uptake plummets rapidly back toward pre-exercise levels, a separate energy expenditure conversion is required for recovery that differs from non-steady-state exercise, that is, 1 L of recovery oxygen uptake = 19.6 kJ (4.7 kcal) (not the standard exercise conversion of 1 L of oxygen uptake = 21.1 kJ) (5.0 kcal).

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