Effects of running exercise on tibiae in ovariectomized rats
Deutscher übersetzter Titel: | Auswirkungen von Lauftraining auf die Knochenstruktur der Tibia bei Ratten nach Entfernung der Eierstoecke |
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Autor: | Kiuchi, A.; Shimegi, S.; Amagai, H.; Ohno, A.; Katsuta, S. |
Erschienen in: | Japanese journal of physical fitness and sports medicine |
Veröffentlicht: | 46 (1997), 1, S. 77-85, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Japanisch |
ISSN: | 0039-906X, 1881-4751 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199710207485 |
Quelle: | BISp |
Abstract des Autors
The effects of running exercise on bone histomorphometric parameters were examined in sham-treated (Sham) and ovariectomized (OVX) rats. The rats were either kept sedentary (C) or trained (T) on a rodent treadmill at 25 m/min, 30 min/day, 5 days/week for 10 weeks. Fat-free dry bone weight, bone mineral content (BMC), and histomorphometric parameters were assessed after excision of the tibiae at sacrifice. The results are summarized as follows: 1) There were no significant differences in fat-free dry bone weight and BMC between OVX-C and Sham-C rats. However, BMC/body weight in OVX-C rats was significantly lower than in Sham-C animals. OVX-C rats had significantly lower trabecular bone volume at the proximal tibial metaphysis than Sham-C animals. Values of bone formation parameters were significantly higher in OVX-C rats than in Sham-C animals. 2) BMC/body weight in OVX-T rats was significantly higher than in OVX-C animals. OVX-T rats had a significantly higher trabecular bone volume at the proximal tibial metaphysis than OVX-C animals. There were no significant differences in bone formation parameters between OVX-T and OVX-C rats. 3) No significant differences were found in any parameters between Sham-C and Sham-T rats. These results suggest that (1) running exercise has a suppressive effect on bone loss after OVX, and (2) training-induced reduction of bone loss by OVX does not seem to be associated with facilitation of bone formation but with suppression of bone resorption. Verf.-Referat