Effect of 6-month high-impact step aerobics and resistance training on BMD and tibial bending strength in sedentary premenopausal women
- 09.10.2021
- Original Article
Erschienen in:
- Verfasst von
- D. J. Dutto
- M. T. C. Liang
- W. A. Braun
- S. L. Bassin
- N. D. Wong
- S. B. Arnaud
- Erschienen in
- Osteoporosis International | Ausgabe 3/2022
Abstract
Summary
The rationale of this study was to examine the effectiveness of 6-month high-impact step aerobics (SA) or moderate-intensity resistance training exercise (RT) on bone mineral density (BMD) and bone bending strength in sedentary women. Results show that SA enhanced BMD in the heel, lower leg, and lumbar spine 2.
Introduction
To determine the effectiveness of 6 months of high-impact step aerobics (SA) or moderate-intensity resistance training (RT) on areal bone mineral density (aBMD) and tibial bending strength in sedentary premenopausal women.
Methods
Sixty-nine women (20–35 years old) who were randomly assigned to RT (n = 22), SA (n = 26), or non-treatment control (CON, n = 21) groups completed the study. SA had a minimum of 50 high-impact landings each training session. RT had a periodized lower body resistance training program incorporating eight exercises (65–85% of 1 repetition maximum: 1-RM). Both RT and SA met 3 times weekly. aBMD was assessed using dual X-ray absorptiometry (DXA). Tibial bending strength was assessed using mechanical response tissue analysis (MRTA). Measurements at 6 months were compared to baseline using ANCOVA, adjusted for baseline measures and covariates with α = 0.05.
Results
Calcaneus aBMD (0.0176 vs -0.0019 or -0.0009 g/cm2 relative to RT, p < 0.004, and CON, p < 0.006, respectively), lower leg aBMD (0.0105 vs -0.0036 g/cm2, relative to RT, p = 0.02), and lumbar spine 2 (L2) aBMD (0.0082 vs -0.0157 g/cm2 relative to CON, p < 0.02) were significantly greater in the SA group after 6 months. Tibial bending strength and bone resorption biomarkers were unchanged in all three groups after 6 months.
Conclusion
Sedentary premenopausal women engaging in 6 months of high-impact aerobic exercise improved aBMD in the calcaneus, lower leg, and L2.
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- Titel
- Effect of 6-month high-impact step aerobics and resistance training on BMD and tibial bending strength in sedentary premenopausal women
- Verfasst von
-
D. J. Dutto
M. T. C. Liang
W. A. Braun
S. L. Bassin
N. D. Wong
S. B. Arnaud
- Publikationsdatum
- 09.10.2021
- Verlag
- Springer London
- Erschienen in
-
Osteoporosis International / Ausgabe 3/2022
Print ISSN: 0937-941X
Elektronische ISSN: 1433-2965 - DOI
- https://doi.org/10.1007/s00198-021-06106-y
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