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Vitamin D improves muscle strength, reduces falling, and reduces frailty – review March 2015

Vitamin D: A Review on Its Effects on Muscle Strength, the Risk of Fall, and Frailty

BioMed Research International, Article ID 953241
Matthieu Halfon, Olivier Phan, and Daniel Teta
Service of Nephrology, Department of Medicine, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland

Vitamin D is the main hormone of bone metabolism. However, the ubiquitary nature of vitamin D receptor (VDR) suggests potential for widespread effects, which has led to new research exploring the effects of vitamin D on a variety of tissues, especially in the skeletal muscle. In vitro studies have shown that the active form of vitamin D, calcitriol, acts in myocytes through genomic effects involving VDR activation in the cell nucleus to drive cellular differentiation and proliferation. A putative transmembrane receptor may be responsible for nongenomic effects leading to rapid influx of calcium within muscle cells. Hypovitaminosis D is consistently associated with decrease in muscle function and performance and increase in disability. On the contrary, vitamin D supplementation has been shown to improve muscle strength and gait in different settings, especially in elderly patients. Despite some controversies in the interpretation of meta-analysis, a reduced risk of falls has been attributed to vitamin D supplementation due to direct effects on muscle cells. Finally, a low vitamin D status is consistently associated with the frail phenotype. This is why many authorities recommend vitamin D supplementation in the frail patient.

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Vitamin D improves muscle strength, reduces falling, and reduces frailty – review March 2015

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- Frailty 9X more likely if low vitamin D – Nov 2015 Added 1 lb of muscle to sarcopenia adults in 13 weeks with just 800 IU vitamin D and protein – RCT Jan 2017 Frailty is related to many things, such as low vitamin D – Sept 2018 Frailty 2X less likely in depressed seniors having a good level of vitamin D – Nov 2018 Frailty can be avoided – vitamin D is one of the ways – July 2017 Improved muscle function in postmenopausal women with just 1,000 IU of vitamin D daily – RCT May 2015

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5343	Muscle T1b.jpg		admin 18 Apr, 2015	116.70 Kb	1164
5342	Muscle T1a.jpg		admin 18 Apr, 2015	215.70 Kb	1201
5341	953241.pdf	PDF 2015	admin 18 Apr, 2015	1.64 Mb	1362

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