eCite Digital Repository

Measures of Childhood Fitness and Body Mass Index are Associated With Bone Mass in Adulthood: A 20-Year Prospective Study

Citation

Foley, SJ and Quinn, SJ and Dwyer, T and Venn, A and Jones, G, Measures of Childhood Fitness and Body Mass Index are Associated With Bone Mass in Adulthood: A 20-Year Prospective Study, Journal of Bone and Mineral Research, 23, (7) pp. 994-1001. ISSN 0884-0431 (2008) [Refereed Article]

DOI: doi:10.1359/JBMR.080223

Abstract

The long-term effects of childhood exercise and body mass index (BMI) on bone mass remain uncertain. We measured 1434 children, 7-15 yr of age, as part of the Australian Schools Health and Fitness Survey in 1985 and ∼20 yr later (mean age, 31 yr). Fitness measures included a 1.6-km run and a 50-m sprint (childhood only), leg strength, standing long jump, and physical work capacity at 170 beats/min (PWC170; childhood and adulthood). BMI was assessed at both time points. A single Sahara bone ultrasound densitometer was used to determine heel bone mass. We found, in females, there were modest but significant beneficial relationships between the childhood 1.6-km run, 50-m sprint, standing long jump, and adult bone mass. In both sexes, PWC 170 at 9 yr of age had a greater influence on adult bone mass (r 2 = 5-8%, all p < 0.05) than it did for 15 yr olds (r2 = <1%, all p > 0.05), independent of adult performance. In the 12 yr olds, childhood PWC170 was also associated with female adult bone mass (broadband ultrasound attenuation: r2 = 6%, p = 0.045). In males, childhood BMI (but no performance measures) was positively associated with adult bone mass after adjustment for adult BMI. In conclusion, childhood fitness levels, particularly in females and in the early pubertal years, are predictive of adult skeletal status as measured by quantitative ultrasound, whereas BMI is predictive in males only. These results suggest that increased skeletal loading in childhood leads to an increase in peak bone mass independent of current loading. © 2008 American Society for Bone and Mineral Research.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Endocrinology
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Skeletal System and Disorders (incl. Arthritis)
Author:Foley, SJ (Ms Stella Foley)
Author:Quinn, SJ (Dr Stephen Quinn)
Author:Venn, A (Professor Alison Venn)
Author:Jones, G (Professor Graeme Jones)
ID Code:55096
Year Published:2008
Web of Science® Times Cited:23
Deposited By:Menzies Institute for Medical Research
Deposited On:2009-03-05
Last Modified:2009-04-24
Downloads:0

Repository Staff Only: item control page