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The utility of the Modifiable Activity Questionnaire for assessing the relationship between physical activity and bone density in children and adolescents

by Snook, Theresa J.

Abstract (Summary)
THE UTILITY OF THE MODIFIABLE ACTIVITY QUESTIONNAIRE (MAQ) FOR ASSESSING THE RELATIONSHIP BETWEEN PHYSICAL ACTIVITY AND BONE DENSITY IN CHILDREN AND ADOLESCENTS Thesis under the direction of Patricia A. Nixon, Ph.D., Associate Professor of Health and Exercise Science and Pediatrics. The purpose was to examine the utility of Kriska’s Modifiable Activity Questionnaire (MAQ) for assessing a relationship between physical activity (PA) and bone health in a pediatric population. Twenty-one children, ages 8-17 years, had PA assessed using the Modifiable Activity Questionnaire, that determined past year total hours of PA (TOT-hrs?wk-1). From TOT-hrs?wk-1 the following were calculated: hours of weight-bearing PA per week (WTB-hrs?wk-1), hours of vigorous PA per week (VIGhrs?wk -1), and MET-hrs?wk-1. BMD of total body (TB), hip (TH), and lumbar spine (LS), and femoral neck (FN) were measured via dual energy x-ray absorptiometry (DXA). Analysis revealed significant (p < .05) correlations between TOT-hrs?wk-1 and TB BMD (r=0.529), TH BMD (r=0.574), and FN BMD (r=0.519), between WTB-hrs?wk-1 and TB BMD (r=0.481), TH BMD (r=0.552), and FN BMD (r=0.509), and between MET-hrs?wk-1 and TH BMD (r=0.464). Age and TOT-hrs?wk-1 explained 46% and 70% of the variance in TH and TB BMD. Results indicate that the MAQ is a useful tool in assessing the relationship between physical activity and bone density. 1
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School:Wake Forest University

School Location:USA - North Carolina

Source Type:Master's Thesis

Keywords:exercise tests for children youth bone densitometry bones

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