Validity of an Exercise Test Based on Habitual Gait Speed in Mobility-Limited Older Adults
| Autor: | Jonathan F. Bean, Dan K. Kiely, Daniel E. Forman, Sharon LaRose, Xin Li, Walter R. Frontera, Ronald E. Hirschberg |
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| Rok vydání: | 2012 |
| Předmět: |
Male
medicine.medical_specialty Heart Diseases Systole medicine.medical_treatment Blood Pressure Physical Therapy Sports Therapy and Rehabilitation Motor Activity Article Metabolic equivalent law.invention Disability Evaluation Physical medicine and rehabilitation Randomized controlled trial Heart Rate law Heart rate medicine Humans Mobility Limitation Treadmill Gait Aged Exercise Tolerance Rehabilitation Construct validity Cross-Sectional Studies Rate pressure product Blood pressure Multivariate Analysis Exercise Test Physical therapy Female Psychology |
| Zdroj: | Archives of Physical Medicine and Rehabilitation. 93:344-350 |
| ISSN: | 0003-9993 |
| DOI: | 10.1016/j.apmr.2011.08.032 |
| Popis: | Li X, Forman DE, Kiely DK, LaRose S, Hirschberg R, Frontera WR, Bean JF. Validity of an exercise test based on habitual gait speed in mobility-limited older adults. Objective To evaluate whether a customized exercise tolerance testing (ETT) protocol based on an individual's habitual gait speed (HGS) on level ground would be a valid mode of exercise testing older adults. Although ETT provides a useful means to risk-stratify adults, age-related declines in gait speed paradoxically limit the utility of standard ETT protocols for evaluating older adults. A customized ETT protocol may be a useful alternative to these standard methods, and this study hypothesized that this alternative approach would be valid. Design We performed a cross-sectional analysis of baseline data from a randomized controlled trial of older adults with observed mobility problems. Screening was performed using a treadmill-based ETT protocol customized for each individual's HGS. We determined the content validity by assessing the results of the ETTs, and we evaluated the construct validity of treadmill time in relation to the Physical Activity Scale for the Elderly (PASE) and the Late Life Function and Disability Instrument (LLFDI). Setting Outpatient rehabilitation center. Participants Community-dwelling, mobility-limited older adults (N=141). Interventions Not applicable. Main Outcome Measures Cardiac instability, ETT duration, peak heart rate, peak systolic blood pressure, PASE, and LLFDI. Results Acute cardiac instability was identified in 4 of the participants who underwent ETT. The remaining participants (n=137, 68% female; mean age, 75.3y) were included in the subsequent analyses. Mean exercise duration was 9.39 minutes, with no significant differences in durations being observed after evaluating among tertiles by HGS status. Mean peak heart rate and mean peak systolic blood pressure were 126.6 beats/min and 175.0mmHg, respectively. Within separate multivariate models, ETT duration in each of the 3 gait speed groups was significantly associated ( P Conclusions Mobility-limited older adults can complete this customized ETT protocol, allowing for the identification of acute cardiac instability and the achievement of optimal exercise parameters. |
| Databáze: | OpenAIRE |
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