A1 Refereed original research article in a scientific journal

Bone mineral density is increased after a 16-week resistance training intervention in elderly women with decreased muscle strength




AuthorsHuovinen V, Ivaska KK, Kiviranta R, Bucci M, Lipponen H, Sandboge S, Raiko J, Eriksson JG, Parkkola R, Iozzo P, Nuutila P

PublisherBIOSCIENTIFICA LTD

Publication year2016

JournalEuropean Journal of Endocrinology

Journal name in sourceEUROPEAN JOURNAL OF ENDOCRINOLOGY

Journal acronymEUR J ENDOCRINOL

Volume175

Issue6

First page 571

Last page582

Number of pages12

ISSN0804-4643

DOIhttps://doi.org/10.1530/EJE-16-0521


Abstract
Objective: Non-pharmacological interventions are important in reducing risk for osteoporotic fractures. We investigated the effects of a 16-week individualized resistance training intervention on bone mineral density (BMD), bone turnover markers and 10-year relative risk (RR) for osteoporotic fracture.Design: Interventional study with a follow-up.Methods: In total, 37 elderly women (mean age 71.9 +/- 3.1 years) with decreased muscle strength participated in the resistance training intervention three times per week with 60 min per session for 16 weeks under the supervision of a licensed physiotherapist. Total hip BMD with quantitative CT, bone markers (sclerostin, osteocalcin, CTX, PINP, IGF-1, 25(OH)-D) and 10-year RR for osteoporotic fracture were measured at baseline, post-intervention and at 1-year follow-up after the end of the intervention. Eleven age-and sex-matched controls did not participate in the intervention but were studied at baseline and at 1-year follow-up.Results: Resistance training seemed to increase total hip BMD by 6% (P = 0.005). Sclerostin (P < 0.001) and total osteocalcin (P = 0.04) increased while other bone markers remained unchanged. A 10-year RR for major osteoporotic and hip fracture remained unchanged. At follow-up total hip BMD (P < 0.001) decreased back to the baseline level with a simultaneous decrease in serum sclerostin (P = 0.045), CTX (P < 0.001) and an increase in 25(OH)-D (P < 0.001), 10-year RR for major osteoporotic (P = 0.002) and hip fracture (P = 0.01).Conclusions: Our findings suggest an important role of continuous supervised resistance training for the prevention of osteoporotic fractures in elderly women with decreased muscle strength.



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