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The effects of gymnastics training on bone mineral density.
Med Sci Sports Exerc 1994; 26(10):1220-5MS

Abstract

The purpose of this study was to examine the effect of 27 wk of gymnastics training on bone mineral density (BMD), body composition, insulin-like growth factor I (IGF-I), and osteocalcin. Subjects were 11 female intercollegiate gymnasts and 11 controls. Dual energy x-ray absorptiometry (Lunar DPX) was used to determine BMD (L2-L4 and femur) and to assess body composition. The gymnasts were significantly lower in weight (53.9 and 60.8 kg) and % body fat (22.6 and 30.6) compared with controls. After training, body weights of gymnasts remained the same but there was a significant increase in lean tissue mass of 2.9 kg (6.7%, P < 0.05). No changes in body composition were observed in the controls. The gymnasts had significantly higher mean lumbar (1.321 vs 1.225), and femoral neck (1.163 vs 1.079) BMD (g.cm-2) than the controls. Lumbar BMD increased significantly (1.3%) in gymnasts following training but femoral neck BMD did not increase. No BMD changes occurred in the control group. Regarding serum IGF-I, no differences were seen between the groups or across time. Serum osteocalcin values were significantly higher in the gymnasts than the controls, but no differences were found across time. In conclusion, gymnasts had significantly higher BMDs than controls, and a significant increase in lumbar BMD was seen in the gymnasts following 27 wk of training.

Authors+Show Affiliations

Department of Kinesiology, Texas Woman's University, Denton 76204-1717.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

7799765

Citation

Nichols, D L., et al. "The Effects of Gymnastics Training On Bone Mineral Density." Medicine and Science in Sports and Exercise, vol. 26, no. 10, 1994, pp. 1220-5.
Nichols DL, Sanborn CF, Bonnick SL, et al. The effects of gymnastics training on bone mineral density. Med Sci Sports Exerc. 1994;26(10):1220-5.
Nichols, D. L., Sanborn, C. F., Bonnick, S. L., Ben-Ezra, V., Gench, B., & DiMarco, N. M. (1994). The effects of gymnastics training on bone mineral density. Medicine and Science in Sports and Exercise, 26(10), pp. 1220-5.
Nichols DL, et al. The Effects of Gymnastics Training On Bone Mineral Density. Med Sci Sports Exerc. 1994;26(10):1220-5. PubMed PMID: 7799765.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of gymnastics training on bone mineral density. AU - Nichols,D L, AU - Sanborn,C F, AU - Bonnick,S L, AU - Ben-Ezra,V, AU - Gench,B, AU - DiMarco,N M, PY - 1994/10/1/pubmed PY - 1994/10/1/medline PY - 1994/10/1/entrez SP - 1220 EP - 5 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 26 IS - 10 N2 - The purpose of this study was to examine the effect of 27 wk of gymnastics training on bone mineral density (BMD), body composition, insulin-like growth factor I (IGF-I), and osteocalcin. Subjects were 11 female intercollegiate gymnasts and 11 controls. Dual energy x-ray absorptiometry (Lunar DPX) was used to determine BMD (L2-L4 and femur) and to assess body composition. The gymnasts were significantly lower in weight (53.9 and 60.8 kg) and % body fat (22.6 and 30.6) compared with controls. After training, body weights of gymnasts remained the same but there was a significant increase in lean tissue mass of 2.9 kg (6.7%, P < 0.05). No changes in body composition were observed in the controls. The gymnasts had significantly higher mean lumbar (1.321 vs 1.225), and femoral neck (1.163 vs 1.079) BMD (g.cm-2) than the controls. Lumbar BMD increased significantly (1.3%) in gymnasts following training but femoral neck BMD did not increase. No BMD changes occurred in the control group. Regarding serum IGF-I, no differences were seen between the groups or across time. Serum osteocalcin values were significantly higher in the gymnasts than the controls, but no differences were found across time. In conclusion, gymnasts had significantly higher BMDs than controls, and a significant increase in lumbar BMD was seen in the gymnasts following 27 wk of training. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/7799765/The_effects_of_gymnastics_training_on_bone_mineral_density_ L2 - http://Insights.ovid.com/pubmed?pmid=7799765 DB - PRIME DP - Unbound Medicine ER -