Proximal muscle strength as a predictor of vitamin D insufficiency in elderly
Turk J Phys Med Rehabil. 2021 Mar 4;67(1):84-90. doi: 10.5606/tftrd.2021.5323
Ahmet Kocaer 1, Tunay Sarpel 1, Neslihan Gökçen 2, Sibel Başaran 1, İlke Coşkun Benlidayı 1
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Objectives: This study aims to evaluate the association of serum vitamin D level with proximal muscle strength, tone, elasticity, and stiffness in elderly.
Patients and methods: Between September 2017 and January 2018, a total of 109 participants (21 males, 88 females; mean age: 71.2±4.6 years; range, 65 to 85 years) were included in the study. The proximal muscle strength was evaluated by MicroFET® 3 device. The muscle tone, elasticity, and stiffness were measured using the MyotonPRO® digital palpation device. Serum 25-hydroxyvitamin D [25(OH)D] level was tested by high-performance liquid chromatography. A receiver operating characteristic (ROC) curve was performed to evaluate the potential role of MicroFET® 3-measured proximal muscle strength in the quantification of vitamin D status.
Results: Vitamin D sufficient participants had a higher proximal muscle strength (p<0.001). Quadriceps and hamstring elasticity at the non-dominant site were significantly higher in vitamin D sufficient group (p<0.05). The ROC analysis indicated that the deltoid muscle strength had the potential of determining vitamin D insufficiency with moderate accuracy (area under the curve=0.744; 95% confidence interval: 0.643-0.845; p<0.001).
Conclusion: Proximal muscle strength, elasticity, and physical performance are associated with vitamin D status. Proximal muscle strength measured by a hand-held dynamometer can be used as a predictor of hypovitaminosis D in elderly.
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Each of the following increase elderly muscle strength
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- Vitamin D
- Exercise
- Omega-3
- Protein
- Magnesium
- Vitamin D Receptor
Items in both categories Seniors and Sports:
- More muscle strength 80 years after being born in warm season (no surprise) – Nov 2022
- Resistance training can be aided by Vitamin D, 50,000 IU monthly is not often enough – RCT Dec 2021
- Exercise training by seniors may benefit from as little as 800 IU of vitamin D – Sept 2021
- Low muscle strength predicts low vitamin D level in elderly – March 2021
- Omega-3 improves elderly muscles – 2 meta-analyses
- Adding just a little vitamin D does not help (muscle mass in this case) – meta-analysis Jan 2021
- Sarcopenia (muscle loss) is 1.6X more likely if poor Vitamin D receptor – July 2020
- Less muscle loss associated with eating more fish (Omega-3, Vitamin D, Magnesium, etc) – Jan 2020
- My balance significantly improved at age 73 (perhaps Vitamin D, B12, or Omega-3) – Jan 2020
- Reduced muscle function in mice lacking Vitamin D Receptors in muscles – June 2019
- Muscles of senior women not helped by just vitamin D (also need exercise) – Aug 2019
- Muscle loss (sarcopenia) may be both prevented and treated by Omega-3 – Feb 2019
- Exercise plus vitamin D increases elderly muscles (Nordic walking in this case) – RCT Sept 2018
- Dietary Protein, Muscle and Physical Function in the Very Old – July 2018
- Postmenopausal women need Vitamin D, protein and exercise to prevent loss of muscle and bone – Aug 2018
- Sarcopenia reduction: Protein, Leucine, Omega-3, Vitamin D, and exercise - hypothesis Aug 2018
- Disability was 1.9 X more likely if weak muscles and low vitamin D two years before – Aug 2018
- Muscle problems are both treated and avoided by Vitamin D – April 2018
- Sarcopenia does not officially exist in Australia, but 1 in 3 of their seniors have it - July 2018
- Nordic Walking and 4,000 IU of vitamin D lowered cholesterol, fat, weight, and lipids (senior women) – RCT Feb 2018
- Overweight senior women with low vitamin D were 12X more likely to be weak – Feb 2018
- Seniors gained 0.3 kg of muscle in 6 weeks with 800 IU and Leucine protein – Aug 2017
- Resistance exercise combined with Vitamin D is great for seniors – meta-analysis July 2017
- Fast twitch muscles increased by Vitamin D in athletes and seniors (reduce falling) – Oct 2016
- Sarcopenia: Nutrition and physical activity – systematic review – Jan 2017
- More fast twitch muscles (IIA) are associated with higher levels of Vitamin D – Feb 2017
- Muscle strength of senior women increased 25 percent with vitamin D, decreased 6 percent with placebo – Oct 2016
- Senior muscles increased somewhat with Omega-3 – RCT July 2015
- Improved muscle function in postmenopausal women with just 1,000 IU of vitamin D daily – RCT May 2015
- Vitamin D supplementation help muscles of seniors who are vitamin D deficient – meta-analysis July 2014
- Elderly lower limb muscle strength improved with Vitamin D supplementation - Meta-analysis Oct 2013
- Low Vitamin D breaks down muscle by interferring with protein - Editorial Nov 2013
- Physical performance of seniors increases with vitamin D up to 30 ng – Jan 2013
- Activity and being outdoors helps seniors – GPS and Vitamin D Dec 2012
- Type 2 muscles, not all muscles, get benefit from Vitamin D - Dec 2012
- Sarcopenia (muscle loss) fought by Vitamin D, exercise and protein - many studies
- Senior women more physically able if vitamin D higher than 30 ng – Sept 2011
- Seniors with more than 20 ng of vitamin D were 14 percent stronger – May 2011
- Vitamin D2 intervention increased elderly muscle strength – Nov 2010
- Vitamin D improves muscle strength if deficient – meta-analysis - Oct 2010
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