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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
The Journal of Sports Medicine and Physical Fitness 2001 March;41(1):78-82
Lack of correlation between 6-month fluctuations in habitual physical activity and testosterone. Concentrations in elderly subjects
Bonnefoy M. 1, 6, Kostka T. 1, 2, 3, Patricot M. C. 4, Berthouze S. E. 5, Lacour J.-R. 2
1 Service de Médecine Gériatrique Centre Hospitalier Lyon-Sud, Lyon, France
2 Laboratoire de Physiologie - GIP Exercice Faculté de Médecine de Lyon-Sud, Lyon, France
3 Department of Preventive Medicine Medical University, Lodz, Poland
4 Laboratoire de Biochimie (Pr A. Revol) Centre Hospitalier Lyon-Sud, Lyon, France
5 Département de Rééducation et Réadaptation Fonctionnelles GIP Exercice, Faculté de Médecine, Université Jean Monnet Saint-Etienne, France
6 Centre de Recherche en Nutrition Humaine de Lyon (CNRHL) Lyon, France
Background. To examine the influence of long-term modifications in habitual physical activity (PA) on resting total testosterone (TT) concentrations in a group of healthy elderly subjects.
Methods. Experimental design: 6-month prospective study. Setting: University research departments of exercise physiology and geriatric medicine. Participants: thirty-one independent, community dwelling elderly subjects (16 men and 15 women) aged >65 who volunteered to participate. Interventions: correlational study. Measures: PA was evaluated by a questionnaire QAPSE (Questionnaire d’Activité Physique Saint-Etienne) and expressed by two activity indices: mean habitual daily energy expenditure (MHDEE) and daily energy expenditure corresponding to leisure time sports activities (Sports activity index).
Results. Changes in resting TT concentrations were not related to changes in MHDEE (r=-0.28; p=0.30 and r=-0.001; p=0.99) and Sports activity (r=-0.30; p=0.26 and r=-0.05; p=0.85) in men and women, respectively. Similarly, relative (%) changes in TT were not related to relative changes in MHDEE (r=-0.16; p=0.55 and r=0.17; p=0.55) and Sports activity (r=-0.11; p=0.68 and r=0.02; p=0.92).
Conclusions. The levels of habitual PA undertaken by an average senior do not appear to affect TT levels in healthy active elderly men and women.