Osteoporosis International

, Volume 18, Issue 8, pp 1101–1107 | Cite as

Modifiable lifestyle factors affecting bone health using calcaneus quantitative ultrasound in adolescent girls

  • M. L. Robinson
  • K. Winters-Stone
  • K. Gabel
  • D. Dolny
Original Article

Abstract

Summary

One hundred and fourteen girls were measured for calcaneus QUS (stiffness index score), calcium intake, weight, and total hours spent in physical activity (moderate to high-impact activities and low to no-impact activities). Multiple regression analysis indicated that hours spent in moderate to high-impact activities, current calcium intake, and weight significantly predicted SI.

Introduction

To determine the influence of modifiable lifestyle factors on adolescent girls’ bone health measured by calcaneus quantitative ultrasound (QUS).

Methods

One hundred and fourteen girls, ages 14–18 (15.97 ± .7), enrolled in high school physical education classes, were measured for calcaneus QUS (stiffness index score), height, weight, current calcium intake from 2–3 day food records, and estimated total hours spent in physical activity from kindergarten to present. Cumulative physical activity hours were separated into two classifications (according to their estimated strain from ground reaction force): moderate to high-impact activities and low to no-impact activities.

Results

Pearson correlations between stiffness index (SI) and age, height, weight, current calcium intake, and hours spent in moderate to high-impact versus low to no-impact activities indicated a positive relationships between SI and weight (r = .259, p = .005), current calcium intake (r = .286, p = .002), and hours spent in moderate to high-impact activities (r = .451, p < .001). Multiple regression between SI and the above independent variables indicated that collectively, hours spent in moderate to high-impact activities, current calcium intake, and weight (r2 = .363, p = <.001) significantly predicted SI.

Conclusion

Our data indicate that moderate to high-impact activities, current calcium intake, and weight positively influence bone properties of the calcaneus in adolescent girls.

Keywords

Adolescent Bone assessment Calcium intake Physical activity Quantitative ultrasound Weight 

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2007

Authors and Affiliations

  • M. L. Robinson
    • 1
  • K. Winters-Stone
    • 2
  • K. Gabel
    • 3
  • D. Dolny
    • 4
  1. 1.Division of Nursing and Health SciencesLewis-Clark State CollegeLewistonUSA
  2. 2.School of NursingOregon Health & Science UniversityPortlandUSA
  3. 3.Family & Consumer SciencesUniversity of IdahoMoscowUSA
  4. 4.Health, Physical Education, Recreation, and Dance (HPERD)University of IdahoMoscowUSA

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