Journal article
Early physical activity provides sustained bone health benefits later in childhood
Medicine and science in sports and exercise, Vol.42(6), pp.1072-1078
06/2010
DOI: 10.1249/MSS.0b013e3181c619b2
PMCID: PMC2874089
PMID: 19997029
Abstract
This study examined the potential effect of early childhood moderate and vigorous physical activity (MVPA) on later bone health. Three hundred and thirty-three children, participating in the Iowa Bone Development Study, were studied at ages 5, 8, and 11 yr. MVPA (min x d(-1)) was measured using an accelerometry-based physical activity monitor. Bone mineral content (BMC; g) of the whole body, lumbar spine, and hip was measured using dual-energy x-ray absorptiometry. Mixed regression models were used to test whether MVPA at age 5 yr had an effect on BMC at ages 8 and 11 yr after adjustment for concurrent height, weight, age, maturity, and MVPA. The analysis was repeated to control for bone outcomes at age 5 yr. Mixed-model least-squares mean values at the person level of covariates for age group were used to compare the BMC at ages 8 and 11 yr of children in the highest and lowest quartiles of MVPA at age 5 yr. For boys and girls, MVPA at age 5 yr predicted BMC adjusted for concurrent height, weight, age, maturity, and MVPA at ages 8 and 11 yr (P < 0.05). When the analysis was repeated to also control for BMC at age 5 yr, the effect of MVPA at age 5 yr was significant for boys but not for girls. Boys and girls in the highest quartile of MVPA at age 5 yr had 4%-14% more BMC at ages 8 and 11 yr than those in the lowest quartile of MVPA at age 5 yr (P < 0.05). These results provide support for the benefits of early MVPA on sustained bone health during childhood especially for boys. Results indicate the importance of increasing MVPA as a strategy to improve BMC later in childhood.
Details
- Title: Subtitle
- Early physical activity provides sustained bone health benefits later in childhood
- Creators
- Kathleen F Janz - Department of Health and Sport Studies, The University of Iowa, Iowa City, IA 52242, USA. kathleen-janz@uiowa.eduElena M LetuchyJulie M Eichenberger GilmoreTrudy L BurnsJames C TornerMarcia C WillingSteven M Levy
- Resource Type
- Journal article
- Publication Details
- Medicine and science in sports and exercise, Vol.42(6), pp.1072-1078
- DOI
- 10.1249/MSS.0b013e3181c619b2
- PMID
- 19997029
- PMCID
- PMC2874089
- NLM abbreviation
- Med Sci Sports Exerc
- ISSN
- 0195-9131
- eISSN
- 1530-0315
- Publisher
- United States
- Grant note
- M01-RR00059 / NCRR NIH HHS R01 DE012101-11A2 / NIDCR NIH HHS R01 DE012101-08 / NIDCR NIH HHS R01 DE012101-05 / NIDCR NIH HHS R01 DE009551 / NIDCR NIH HHS R01-DE12101 / NIDCR NIH HHS R01 DE012101 / NIDCR NIH HHS R01 DE012101-03 / NIDCR NIH HHS R01 DE012101-09 / NIDCR NIH HHS R01 DE012101-06 / NIDCR NIH HHS R01 DE012101-10 / NIDCR NIH HHS R01 DE012101-02 / NIDCR NIH HHS M01 RR000059 / NCRR NIH HHS R01 DE012101-05S1 / NIDCR NIH HHS R01-DE09551 / NIDCR NIH HHS R01 DE012101-07 / NIDCR NIH HHS R01 DE012101-04 / NIDCR NIH HHS
- Language
- English
- Date published
- 06/2010
- Academic Unit
- Preventive and Community Dentistry; Epidemiology; Surgery; Injury Prevention Research Center; Neurosurgery; Health, Sport, and Human Physiology
- Record Identifier
- 9983917778502771
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