Open AccessThe effects of resistance training on bone mineral density and bone quality in type 2 diabetic rats
Author(s) -
Ikedo Aoi,
Kido Kohei,
Ato Satoru,
Sato Koji,
Lee JiWon,
Fujita Satoshi,
Imai Yuuki
Publication year - 2019
Publication title -
physiological reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 39
ISSN - 2051-817X
DOI - 10.14814/phy2.14046
Subject(s) - bone mineral , medicine , cortical bone , endocrinology , type 2 diabetes mellitus , urology , bone density , diabetes mellitus , osteoporosis , anatomy
Resistance training ( RT ) has been known to be effective in maintaining and improving bone strength, which is based on bone mineral density ( BMD ) and bone quality. However, it is not clear whether RT is effective in improving bone strength in patients with type‐2 diabetes mellitus (T2 DM ), who have a high risk of fracture. Therefore, we tested the effects of a 6‐week RT regimen using percutaneous electrical stimulation in T2 DM model rats, male Otsuka Long‐Evans Tokushima Fatty ( OLETF ), and its control, Long‐Evans Tokushima Otsuka ( LETO ). After 6 weeks of RT , tibial BMD in RT legs was significantly higher than that in control ( CON ) legs in both groups. In diaphyseal cortical bone, bone area/tissue area, and cortical thickness was significantly increased in RT legs compared with CON legs in both groups. Cortical porosity was highly observed in OLETF compared with LETO , but RT improved cortical porosity in both groups. Interestingly, trabecular number, trabecular thickness and trabecular space as well as BMD and bone volume/tissue volume in proximal tibial metaphyseal trabecular bone were significantly improved in RT legs compared with CON legs in both groups. In contrast, connectivity density and structural model index were not affected by RT . These results indicate that the 6‐week RT regimen effectively increased BMD and improved bone quality in T2 DM model rats as well as control rats. Therefore, RT may have the potential to improve bone strength and reduce fracture risk, even in patients with T2 DM .