Article

OBJECTIVE: To test the hypothesis that the static rear stability of an occupied
wheelchair is greater during full inspiration than expiration. DESIGN:
Within-subject comparisons. SETTING: Rehabilitation center. PARTICIPANTS:
Able-bodied participants (N=10). INTERVENTION: None. MAIN OUTCOME MEASURES: We
measured the static rear stability (brakes unlocked) of an occupied wheelchair on
a test platform according to International Organization for Standardization
standards. We also used the Exhalation Threshold Test. The Exhalation Threshold
Test was positive if, having been positioned at the maximum degree of platform
tilt needed to maintain stability during full inspiration, the wheelchair tipped
backward when the participant exhaled. RESULTS: The mean static rear stability
values at full inspiration and expiration +/- SD were 16.5 degrees +/-2.3 degrees
and 16.1 degrees +/-2.4 degrees , with a mean difference of .46 degrees +/-.24
degrees (3%; P=.002). The Exhalation Threshold Test was positive in 19 (95%) of
20 trials. CONCLUSIONS: Respiration has a slight but statistically significant
effect on the rear stability of occupied wheelchairs, with greater stability at
full inspiration. This has potential clinical implications for stability testing
and the training of wheelchair skills, but further study is needed.
CI - Copyright 2010 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS