Influence of Submaximal Exercise on Postural Control in Older Adults

Objective The authors conducted this cross-sectional study to assess the influence of submaximal exercise on postural stability as measured by computerized dynamic posturography (CDP) and compared this study's CDP results with clinical balance tests such as the Berg Balance Test and the Timed Up and Go test using a descriptive/explorative approach. Design Forty-three participants performed two exercise tasks (6-min walk test and stair climbing). CDP and established scores (Berg Balance Test and Timed Up and Go test) were used to assess postural instability. Results Despite significant pulse rate increases (approximately 20%, P < 0.05), no clear differences in CDP results were found after completion of either exercise task. The overall stability index scores for all subjects remained unchanged (P = 0.98). A descriptive analysis showed that excellent Berg Balance Test and Timed Up and Go test results were associated with good CDP results. Conclusions Submaximal exercise did not adversely affect postural stability in these older adults. To Claim CME Credits: Complete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCME CME Objectives: After completion of this article, readers should be able to: (1) Appreciate the impact of falls on the health of the elderly; (2) Understand afferent input contributing to postural control; and (3) Appreciate the effects of submaximal exercise on postural stability in the elderly. Level: Advanced Accreditation: The Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The Association of Academic Physiatrists designates this activity for a maximum of 1.5 AMA PRA Category 1 Credit(s). Physicians should only claim credit commensurate with the extent of their participation in the activity.