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Effects of 14 weeks of progressive endurance training on energy expenditure in elderly people

Published online by Cambridge University Press:  09 March 2007

Béatrice Morio ,
Christophe Montaurier ,
Gisèle Pickering ,
Patrick Ritz ,
Nicole Fellmann ,
Jean Coudert ,
Bernard Beaufrère  and
Michel Vermorel
Béatrice Morio
Affiliation:
Centre de Recherche en Nutrition Humaine, LNH, BP 321-58 rue Montalembert, 63009 Clermont-Ferrand cédex 1, France
Christophe Montaurier
Affiliation:
Centre de Recherche en Nutrition Humaine, LNH, BP 321-58 rue Montalembert, 63009 Clermont-Ferrand cédex 1, France
Gisèle Pickering
Affiliation:
Laboratoire de Physiologie-Biologie du Sport, Faculté de Médecine, 28 Place H. Dunant 63001 Clermont-Ferrand, France
Patrick Ritz
Affiliation:
Centre de Recherche en Nutrition Humaine, LNH, BP 321-58 rue Montalembert, 63009 Clermont-Ferrand cédex 1, France
Nicole Fellmann
Affiliation:
Laboratoire de Physiologie-Biologie du Sport, Faculté de Médecine, 28 Place H. Dunant 63001 Clermont-Ferrand, France
Jean Coudert
Affiliation:
Laboratoire de Physiologie-Biologie du Sport, Faculté de Médecine, 28 Place H. Dunant 63001 Clermont-Ferrand, France
Bernard Beaufrère
Affiliation:
Centre de Recherche en Nutrition Humaine, LNH, BP 321-58 rue Montalembert, 63009 Clermont-Ferrand cédex 1, France
Michel Vermorel*
Affiliation:
INRA, U. Métabolismes Energétique et Lipidique, 63122 Saint-Genes-Champanelle, France
*
*Dr Michel Vermorel, fax +33 4 73 62 46 39, email [email protected]
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Abstract

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Effects of progressive endurance training on energy expenditure (EE) were studied in thirteen elderly sedentary subjects (62.8 (sd 2.3) years) after 7 and 14 weeks of training. Daily EE (DEE) and energy cost of the various usual activities were measured over 48 h by whole-body indirect calorimetry. Free-living DEE (DEEFLC) was calculated from 7 d activity recordings and the energy costs of activities were measured in the calorimeters using the factorial method. DEEFLC did not vary significantly throughout the training period despite the additional energy cost of training sessions (0·60 (sd 0·15) MJ/d), because energy expended during free-living activities (EEACT) decreased by 4·8 (sd 7·1) % (P < 0·05) and 7·7 (sd 8·6) % (P < 0·01) after 7 and 14 weeks of training respectively. Measurements in the calorimeters showed that sleeping metabolic rate transiently increased by 4·6 (sd 3·2) % after 7 weeks of training (P < 0·001) and returned to its initial level after 14 weeks of training. BMR was 7·6 (sd 7·0)%(P < 0·01) and 4·1 (sd 6·1)% (P = NS) higher after 7 and 14 weeks of training respectively, than before training. Likewise, diet-induced thermogenesis increased from 3·7 (sd 2·5) to 7·2 (sd 2·8) % energy intake after 7 weeks of training (P < 0·05), and returned to its initial level after 14 weeks of training (4·2 (sd 2·6) % energy intake). Despite these changes, energy expended during activities and the corresponding DEE did not vary throughout the training period. It was concluded that: (1) DEEFLC remained constant throughout the training period due to a compensatory decrease in free-living EEACT; (2) progressive endurance training induced a transient increase in sleeping metabolic rate, BMR and diet-induced thermogenesis after 7 weeks which was not reflected in the energy expended during activities and DEE.

Keywords

Energy expenditureEndurance trainingElderly people
Type
Research Article
Information
British Journal of Nutrition , Volume 80 , Issue 6 , December 1998 , pp. 511 - 519
Copyright
Copyright © The Nutrition Society 1998

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