Effects of BMI on bone loading due to physical activity

Journal article


Luo, J, Smith, T, Reeves, S, Halsey, L and Huber, J (2018). Effects of BMI on bone loading due to physical activity. Journal of applied biomechanics.
AuthorsLuo, J, Smith, T, Reeves, S, Halsey, L and Huber, J
Abstract

The aim of the current study was to compare bone loading due to physical activity between lean and, overweight and obese individuals. Fifteen participants (lower BMI group: BMI < 25 kg/m2, n=7; higher BMI group: 25 kg/m2 < BMI < 36.35 kg/m2, n=8) wore a tri-axial accelerometer on one day to collect data for the calculation of bone loading. The International Physical Activity Questionnaire (short form) was used to measure time spent at different physical activity levels. Daily step counts were measured using a pedometer. Differences between groups were compared using independent t-tests. Accelerometer data revealed greater loading dose at the hip in lower BMI participants at a frequency band of 0.1–2 Hz (P = .039, Cohen’s d = 1.27) and 2–4 Hz (P = .044, d = 1.24). Lower BMI participants also had a significantly greater step count (P = .023, d = 1.55). This corroborated with loading intensity (d  0.93) and questionnaire (d = 0.79) effect sizes to indicate higher BMI participants tended to spend more time in very light, and less time in light and moderate activity. Overall participants with a lower BMI exhibited greater bone loading due to physical activity; participants with a higher BMI may benefit from more light and moderate level activity to maintain bone health.

Keywords0903 Biomedical Engineering; 1106 Human Movement And Sports Science; 0913 Mechanical Engineering; Sport Sciences
Year2018
JournalJournal of applied biomechanics
PublisherHuman Kinetics Publishers, Inc.
ISSN1065-8483
Digital Object Identifier (DOI)doi:10.1123/jab.2016-0126
Publication dates
Print01 Feb 2018
Publication process dates
Deposited08 Aug 2017
Accepted11 Jul 2017
Accepted author manuscript
License
CC BY 4.0
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https://openresearch.lsbu.ac.uk/item/86w12

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