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Osteoporosis International
Published in: Osteoporosis International 6/2009

01-06-2009 | Original Article

An assessment of the osteogenic index of therapeutic exercises for stroke patients: relationship to severity of leg motor impairment

Authors: R. W. K. Lau, M. Y. C. Pang

Published in: Osteoporosis International | Issue 6/2009

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Abstract

Summary

Exercise may be a viable way to promote bone health in stroke survivors. This study used the osteogenic index to evaluate the osteogenic potential of selected exercises for stroke survivors. The results show that brisk walking and stepping may be good skeletal loading exercises for this population.

Introduction

Exercise may induce positive effects on bone health in stroke patients. The purpose of this study was to evaluate the osteogenic potential of selected exercises for stroke survivors.

Methods

Sixty stroke patients were categorized into group 1 (moderate to severe leg motor impairment) and group 2 (mild to moderate impairment). Each subject performed five exercises in random order: walking at self-selected speed, walking at maximal speed, stepping onto a 6-in. riser, sit-to-stand, and jumping. The peak ground reaction force (GRF) on the hemiparetic side and the number of loading cycles achieved in 1 min were determined. The osteogenic index (OI) was computed for each exercise, based on the formula: OI = Peak GRF (in body weight) × In (number of loading cycles + 1). Two-way analysis of variance was used to compare the OI among the five exercises between the two groups.

Results

For group 1, stepping had significantly higher OI than other exercises (p < 0.001). For group 2, both walking at maximal speed and stepping had significantly higher OI than other exercises (p < 0.001).

Conclusions

Stepping had the highest OI for those with more severe leg motor impairment. Both stepping and brisk walking had superior OI for those with mild leg motor impairment.
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Metadata
Title
An assessment of the osteogenic index of therapeutic exercises for stroke patients: relationship to severity of leg motor impairment
Authors
R. W. K. Lau
M. Y. C. Pang
Publication date
01-06-2009
Publisher
Springer-Verlag
Published in
Osteoporosis International / Issue 6/2009
Print ISSN: 0937-941X
Electronic ISSN: 1433-2965
DOI
https://doi.org/10.1007/s00198-008-0773-1

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