Body composition and sleeping metabolic rate in response to a 5-month endurance-training programme in adults
Autor: | W. H. M. Saris, G. H. P. Seyts, G. A. L. Meijer, F. ten Hoor, K.R. Westerterp, G. M. E. Janssen |
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Rok vydání: | 1991 |
Předmět: |
Adult
Male medicine.medical_specialty Time Factors Sports medicine Physiology Physical exercise Body Mass Index Fat free mass Endurance training Physiology (medical) Internal medicine medicine Humans Orthopedics and Sports Medicine Exercise physiology Exercise business.industry Public Health Environmental and Occupational Health General Medicine Endocrinology Metabolic rate Body Composition Physical Endurance Composition (visual arts) Female business Energy Metabolism Sleep Body mass index |
Zdroj: | European journal of applied physiology and occupational physiology. 62(1) |
ISSN: | 0301-5548 |
Popis: | This study examined the effect of exercise training on body composition and sleeping metabolic rate (SMR) in 15 men and 13 women who participated in a 20-week training programme aimed at running a half marathon. Body mass (BM) was measured after waking up, fasted and with an empty bladder. Body composition was assessed using densitometry. The SMR was measured from 0300-0600 hours during an overnight sleep in a respiration chamber. Assessment of SMR was at least 36 h after the last period of exercise training. After 20 weeks of endurance training no change in BM was observed. However, body composition changed significantly. On average men lost 2.4 kg body fat (P less than 0.01) and gained 1.7 kg fat free mass (FFM) (P less than 0.01). In women fat loss averaged 0.9 kg after 20 weeks (P less than 0.01), while FFM increased by 1.0 kg (P less than 0.05). Loss of fat mass was significantly larger in males (P less than 0.05). No changes in SMR were found, either in absolute terms, or when normalised for BM or FFM. Therefore, we have concluded that exercise training has no chronic, long-term effect on SMR. A possible explanation for this outcome in view of the different findings in similar studies is discussed. |
Databáze: | OpenAIRE |
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