Effect of an 18-wk weight-training program on energy expenditure and physical activity

Ludo M. L. A. Van Etten, Klaas R. Westerterp, Frans T. J. Verstappen, Bart J. B. Boon, and Wim H. M. Saris Department of Human Biology and Department of Movement Sciences, University of Limburg, 6200 MD Maastricht, The Netherlands Received 26 March 1996; accepted in final form 5 September 1996. Van...

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Published in:	Journal of applied physiology (1985) Vol. 82; no. 1; pp. 298 - 304
Main Authors:	Van Etten, Ludo M. L. A, Westerterp, Klaas R, Verstappen, Frans T. J, Boon, Bart J. B, Saris, Wim H. M
Format:	Journal Article
Language:	English
Published:	Bethesda, MD Am Physiological Soc 01-01-1997 American Physiological Society
Subjects:	Adult Biological and medical sciences Body Mass Index Energy Metabolism - physiology Exercise - physiology Fundamental and applied biological sciences. Psychology Humans Male Time Factors Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports Physical exercise Human Daily Physical training Program Energetic cost Metabolism Accelerometry
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Summary:	Ludo M. L. A. Van Etten, Klaas R. Westerterp, Frans T. J. Verstappen, Bart J. B. Boon, and Wim H. M. Saris Department of Human Biology and Department of Movement Sciences, University of Limburg, 6200 MD Maastricht, The Netherlands Received 26 March 1996; accepted in final form 5 September 1996. Van Etten, Ludo M. L. A., Klaas R. Westerterp, Frans T. J. Verstappen, Bart J. B. Boon, and Wim H. M. Saris. Effect of an 18-wk weight-training program on energy expenditure and physical activity. J. Appl. Physiol. 82(1): 298-304, 1997. The purpose of this study was to examine the effect of an 18-wk weight-training program on average daily metabolic rate (ADMR). Before the intervention and in weeks 8 and 18 (T 0 , T 8 , and T 18 , respectively) data on body composition, sleeping metabolic rate (SMR), food intake, energy cost of the weight-training program (EE ex ), and nontraining physical activity (accelerometer) were collected in the exercise group (EXER, n = 18 males). ADMR was determined in a subgroup (EX12, n = 12) by using doubly labeled water. At T 0 and T 18 , data (except ADMR) were also collected in a control group (Con, n = 8). Body mass did not change in EXER or Con. Fat-free mass increased only in EXER with 2.1 ± 1.2 kg, whereas fat mass decreased in EXER as well as Con (2.0 ± 1.8 and 1.4 ± 1.0 kg, respectively). Initial ADMR (12.4 ± 1.2 MJ/day) increased at T 8 (13.5 ± 1.3 MJ/day, P < 0.001) with no further increase at T 18 (13.5 ± 1.9 MJ/day). SMR did not change in EXER (4.8 ± 0.5, 4.9 ± 0.5, 4.8 ± 0.5 kJ/min) or Con (4.7 ± 0.4, 4.8 ± 0.4 kJ/min). Energy intake did not change in EXER (10.1 ± 1.8, 9.7 ± 1.8, 9.2 ± 1.9 MJ/day) or Con (10.2 ± 2.6, 9.4 ± 1.8, 10.1 ± 1.5 MJ/day) and was systematically underreported in EX12 ( 21 ± 14, 28 ± 18, 34 ± 14%, P < 0.001). EE ex (0.47 ± 0.20, 0.50 ± 0.18 MJ/day) could only explain 40% of the increase in ADMR. Nontraining physical activity did not change in both groups. In conclusion, although of modest energy cost, weight-training induces a significant increase in ADMR. doubly labeled water; accelerometer; sleeping metabolic rate; food intake; physical exercise 0161-7567/97 $5.00 Copyright © 1997 the American Physiological Society
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	8750-7587 1522-1601
DOI:	10.1152/jappl.1997.82.1.298