The present review demonstrates that vitamin D supplementation result ed in small but nonsignificant improvements in muscle strength compared to control in postmenopausal women .
No significant effect was observed in mobility after vitamin D administration
BACKGROUND The results obtained from previous trials regarding the effects of vitamin D supplementation on muscle strength and mobility  in postmenopausal women have been inconsistent .
This systematic review and meta- analysis of r and omised controlled trials ( RCTs ) aim ed to investigate the effect of vitamin D supplementation on muscle strength and mobility in postmenopausal women .
Physical performance and life quality in postmenopausal women supplemented with vitamin D: a two-year prospective study
Aim : To investigate the effects of calcium and vitamin D supplementation on bone turnover marker levels , muscle strength and quality of life in postmenopausal Chinese women . Methods : A total of 485 healthy postmenopausal Chinese women ( 63.44±5.04 years ) were enrolled in this open-label , 2-year , prospect i ve , community-based trial . The participants were divided into group A , B , C , which were treated with calcium ( 600 mg/d ) alone , calcium ( 600 mg/d ) and cholecalciferol ( 800 IU/d ) or calcium ( 600 mg/d ) and calcitriol ( 0.25 μg/d ) , respectively , for 2 years . Serum levels of 25-hydroxyvitamin D , parathyroid hormone , β-CTX and P1NP were measured , and the muscle strength and quality of life were assessed at baseline and at 12- and 24-month follow-ups . Results : Four hundred and sixty one participants completed this study . Serum levels of 25-hydroxyvitamin D were significantly increased in group C , but not changed in groups A and B at 24-month follow-up . Serum levels of parathyroid hormone , bone turnover marker β-CTX and bone formation marker P1NP were significantly decreased in group C , while serum levels of β-CTX were increased in group A at 24-month follow-up . The participants in group C maintained the grip strength , while those in groups A and B exhibited decreased grip strength at 24-month follow-up . The quality of life for the participants in groups B and C remained consistent , but that in group A was deteriorated at 24-month follow-up . Conclusion : Supplementation with calcitriol and calcium modifies the bone turnover marker levels , and maintains muscle strength and quality of life in postmenopausal Chinese women , whereas supplementation with cholecalciferol and calcium prevents aging-mediated deterioration in quality of life
The present review demonstrates that vitamin D supplementation result ed in small but nonsignificant improvements in muscle strength compared to control in postmenopausal women .
No significant effect was observed in mobility after vitamin D administration
BACKGROUND The results obtained from previous trials regarding the effects of vitamin D supplementation on muscle strength and mobility  in postmenopausal women have been inconsistent .
This systematic review and meta- analysis of r and omised controlled trials ( RCTs ) aim ed to investigate the effect of vitamin D supplementation on muscle strength and mobility in postmenopausal women .