|
|
||||||||
1 Institut National de la
Recherche Agronomique Clermont-Theix,
Received 22 July 1996; accepted in final form 11 March 1997.
Horcajada, M.-N., V. Coxam, M.-J. Davicco, N. Gaumet, P. Pastoureau, C. Leterrier, J. Culioli, and J.-P. Barlet. Influence of treadmill running on femoral bone in young orchidectomized rats.
J. Appl. Physiol. 83(1): 129-133, 1997.
osteoporosis; exercise; osteocalcin; deoxypyridinoline
Forty 6-wk-old male Wistar rats weighing 308 ± 24 g were
divided into two groups. On day 0, the
20 animals in one group were surgically castrated and the other group
was sham operated. Within each group, 10 rats were selected for
treadmill running (60% maximal O2
consumption, 1 h/day, 6 days/wk for 15 wk). The 20 sedentary rats were
used as controls. At the time the rats were killed
(day 105), running had no
significant effect on femoral mechanical properties either in castrated
or in sham-operated rats. Femoral bone density was lower
in orchidectomized than in sham-operated rats. Nevertheless, it was
higher in exercised than in sedentary rats. Femoral Ca content
paralleled changes in bone density. Treadmill running had no
significant effect on plasma osteocalcin concentration but inhibited
the increase in urinary deoxypyridinoline excretion observed in
castrated rats. Image analysis (measured at the distal femoral
diaphysis) revealed that these effects mainly resulted from decreased
trabecular bone resorption in castrated exercised rats.
0161-7567/97 $5.00
Copyright © 1997 the American Physiological Society
This article has been cited by other articles:
![]() |
J. Wu, X. X. Wang, H. Chiba, M. Higuchi, M. Takasaki, A. Ohta, and Y. Ishimi Combined intervention of exercise and genistein prevented androgen deficiency-induced bone loss in mice J Appl Physiol, January 1, 2003; 94(1): 335 - 342. [Abstract] [Full Text] [PDF] |
||||
![]() |
T. Notomi, Y. Okazaki, N. Okimoto, Y. Tanaka, T. Nakamura, and M. Suzuki Effects of tower climbing exercise on bone mass, strength, and turnover in orchidectomized growing rats J Appl Physiol, September 1, 2002; 93(3): 1152 - 1158. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |