Estimating bone mineral content based on different types of muscle strength tests

The aims of this pilot study were to verify which muscle strength tests better explain bone mineral content (BMC) of the femoral neck and lumbar spine and to develop predictive equations to estimate femoral neck and lumbar spine BMC. Twenty-nine subjects aged 56–76 years old (12 women and 17 men) pa...

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Bibliographic Details
Published in:Journal of bodywork and movement therapies 2018-07, Vol.22 (3), p.586-591
Main Authors: Orssatto, Lucas Bet da Rosa, Bezerra, Ewertton de Souza, Moura, Bruno Monteiro de, de Castro, João Antônio Chula, Silva, Diego Augusto Santos, Moro, Antônio Renato Pereira, Diefenthaeler, Fernando
Format: Article
Language:English
Subjects:
Absorptiometry, Photon
Aged
Aging
Body Mass Index
Bone Density - physiology
Bone remodeling
Dynapenia
Female
Femur Neck - physiology
Hand Strength - physiology
Humans
Isometric Contraction - physiology
Lumbosacral Region - physiology
Male
Middle Aged
Muscle Strength - physiology
Muscle, Skeletal - physiology
Muscular atrophy
Osteoporosis
Pilot Projects
Predictive Value of Tests
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Summary:The aims of this pilot study were to verify which muscle strength tests better explain bone mineral content (BMC) of the femoral neck and lumbar spine and to develop predictive equations to estimate femoral neck and lumbar spine BMC. Twenty-nine subjects aged 56–76 years old (12 women and 17 men) participated in the study. Femoral neck and lumbar spine BMC was evaluated by Dual X-ray absorptiometry (DXA). Muscle strength measurements included maximal isometric voluntary contractions of knee extensors and flexors, vertical jump, 5-repetition maximum of the leg press (5-RMLP) and seated leg curl (5-RMLC), and handgrip strength. Women presented a moderate to strong correlation between femoral neck BMC and 5-RMLP (r = 0.819), 5-RMLC (r = 0.879), knee extensors peak torque (r = 0.699), and handgrip strength (r = 0.663), as well as between lumbar spine BMC and the 5-RMLP test (r = 0.845) and manual grip strength (r = 0.699). For females, the 5-RMLP and 5-RMLC tests most fully explained femoral neck BMC (R2 = 0.859) and the 5-RMLP test and body mass explained lumbar spine density (R2 = 0.757) for females. Men did not present correlations between BMC and strength variables. For females, the 5-RMLP and 5-RMLC variables explained the variations of femoral neck BMC, while 5-RMLP and body mass explained lumbar spine BMC. Future studies should evaluate a larger sample size and prioritize the strength tests with a greater predictive capacity.
ISSN:1360-8592
1532-9283
DOI:10.1016/j.jbmt.2017.09.020