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- Title
Effect of short-term upper-body resistance training on muscular strength, bone metabolic markers, and BMD in premenopausal women.
- Authors
Liang, Michael T.C.; Quezada, Lorena; Lau, WY Jamie; Sokmen, Bulent; Spalding, Thomas W.
- Abstract
To examine the effect of a 10-week upper-body resistance training program on bone turnover markers and site-specific bone mineral density (BMD) in the wrist and distal half of the ulna and radius in untrained and healthy young premenopausal women. Methods: Twenty-two subjects (aged 22.1 ± 1.8 years) were randomly assigned to a resistance training (n = 12) or no training control (n = 10) group. The following outcome variables were measured before and after 10 weeks of resistance training: (1) bone formation biomarker osteocalcin, and bone resorption biomarker tartrate-resistant acid phosphatase isoform 5b; (2) BMD in the wrist and distal half of the ulna and radius; (3) isokinetic strength of the elbow and knee extensors and flexors; (4) dynamic strength of the arm extensors and flexors; and (5) maximum number of push-ups. Results: The 10-week upper body resistance training intervention resulted in improved strength performance in push-ups (resistance training versus control: P <0.05), chest presses (P <0.05), and pulldowns (P <0.05). However, there was no improvement in the BMD of the wrist (P >0.05), BMD of the distal half of the ulna and radius (P >0.05), and metabolic biomarkers osteocalcin (P >0.05) and tartrate-resistant acid phosphatase isoform 5b (P >0.05), except for the osteocalcin/tartrate-resistant acid phosphatase isoform 5b ratio. Also, no improvement in the resistance training group was observed for isokinetic strength of the knee and elbow flexion/extension. Conclusion: Upper-body muscular strength performance, but not bone metabolic markers and BMD of the wrist, can be improved with a 10-week upper body resistance training program of the nonweight-bearing limbs in untrained young premenopausal women.
- Subjects
RESISTANCE training; MUSCLE strength measurement; BONE metabolism; BONE density; OSTEOCALCIN; ISOKINETIC exercise
- Publication
Open Access Journal of Sports Medicine, 2012, Vol 3, p201
- ISSN
1179-1543
- Publication type
Article
- DOI
10.2147/OAJSM.S33399