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Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years.
Int J Sports Med. 2011 Feb; 32(2):100-8.IJ

Abstract

To evaluate the effects of a 12-month exercise intervention using either high-impact step aerobic exercise or moderate-intensity strength training on areal bone mineral density (aBMD) we studied 51 untrained women, aged 20-35 years, for this study. Whole body and heel and wrist aBMD were measured by dual-energy X-ray absorptiometry (DXA, Hologic or PIXI Lunar). Subjects were randomly assigned to: impact-loaded step aerobic exercise (SA, n=15), moderate-intensity lower body strength training (ST, n=16) or non-exercise control (CON, n=20). Data analysis only included those who completed 95% of each training routine and attended at least 80% of all sessions. Group differences in aBMD, leg press strength and urinary cross-link deoxypridinoline (μDPD) were analysed using analysis of variance. After a 12-month intervention, the SA elicited an increase in aBMD of the heel (4.4%, p<0.05) and leg press strength (15%, p<0.05), relative to baseline. Meanwhile, the ST showed an increase in leg press strength (48%, p<0.05) with no significant increase in aBMD at any measured site. Similar and unchanged μDPD was observed in all 3 groups at baseline, 6 and 12 months. In conclusion, a 12-month high-impact step aerobic exercise resulted in a significant increase in the heel aBMD in untrained young women, who complied with the exercise regimen. A moderate intensity strength training intervention of similar duration had no effect on aBMD although leg strength increased significantly.

Authors+Show Affiliations

California State Polytechnic University Pomona, United States. mtcliang@csupomona.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

21165807

Citation

Liang, M T C., et al. "Effect of High-impact Aerobics and Strength Training On BMD in Young Women Aged 20-35 Years." International Journal of Sports Medicine, vol. 32, no. 2, 2011, pp. 100-8.
Liang MT, Braun W, Bassin SL, et al. Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years. Int J Sports Med. 2011;32(2):100-8.
Liang, M. T., Braun, W., Bassin, S. L., Dutto, D., Pontello, A., Wong, N. D., Spalding, T. W., & Arnaud, S. B. (2011). Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years. International Journal of Sports Medicine, 32(2), 100-8. https://doi.org/10.1055/s-0030-1268503
Liang MT, et al. Effect of High-impact Aerobics and Strength Training On BMD in Young Women Aged 20-35 Years. Int J Sports Med. 2011;32(2):100-8. PubMed PMID: 21165807.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years. AU - Liang,M T C, AU - Braun,W, AU - Bassin,S L, AU - Dutto,D, AU - Pontello,A, AU - Wong,N D, AU - Spalding,T W, AU - Arnaud,S B, Y1 - 2010/12/16/ PY - 2010/12/18/entrez PY - 2010/12/18/pubmed PY - 2011/5/5/medline SP - 100 EP - 8 JF - International journal of sports medicine JO - Int J Sports Med VL - 32 IS - 2 N2 - To evaluate the effects of a 12-month exercise intervention using either high-impact step aerobic exercise or moderate-intensity strength training on areal bone mineral density (aBMD) we studied 51 untrained women, aged 20-35 years, for this study. Whole body and heel and wrist aBMD were measured by dual-energy X-ray absorptiometry (DXA, Hologic or PIXI Lunar). Subjects were randomly assigned to: impact-loaded step aerobic exercise (SA, n=15), moderate-intensity lower body strength training (ST, n=16) or non-exercise control (CON, n=20). Data analysis only included those who completed 95% of each training routine and attended at least 80% of all sessions. Group differences in aBMD, leg press strength and urinary cross-link deoxypridinoline (μDPD) were analysed using analysis of variance. After a 12-month intervention, the SA elicited an increase in aBMD of the heel (4.4%, p<0.05) and leg press strength (15%, p<0.05), relative to baseline. Meanwhile, the ST showed an increase in leg press strength (48%, p<0.05) with no significant increase in aBMD at any measured site. Similar and unchanged μDPD was observed in all 3 groups at baseline, 6 and 12 months. In conclusion, a 12-month high-impact step aerobic exercise resulted in a significant increase in the heel aBMD in untrained young women, who complied with the exercise regimen. A moderate intensity strength training intervention of similar duration had no effect on aBMD although leg strength increased significantly. SN - 1439-3964 UR - https://www.unboundmedicine.com/medline/citation/21165807/Effect_of_high_impact_aerobics_and_strength_training_on_BMD_in_young_women_aged_20_35_years_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-0030-1268503 DB - PRIME DP - Unbound Medicine ER -