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The Journal of Sports Medicine and Physical Fitness 2001 March;41(1):78-82

Copyright © 2009 EDIZIONI MINERVA MEDICA

lingua: Inglese

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

From the 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


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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.

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