Article

People with spina bifida (SB) face personal and environmental
barriers to exercise that contribute to physical inactivity, obesity, risk of
cardiovascular disease, and poor aerobic fitness.
The WHEEL rating of perceived
exertion (RPE) Scale was validated in people with SB to monitor exercise
intensity. However, the psycho-physiological link between RPE and ventilatory
breakpoint (Vpt), the group-normalized perceptual response, has not been
determined and would provide a starting point for aerobic exercise in this
cohort. OBJECTIVES: The primary objectives were to determine the group-normalized
RPE equivalent to Vpt based on WHEEL and Borg Scale ratings and to develop a
regression model to predict Borg Scale (conditional metric) from WHEEL Scale
(criterion metric). The secondary objective was to create a table of
interchangeable values between WHEEL and Borg Scale RPE for people with SB
performing a load incremental stress test. DESIGN: Cross-sectional observational.
SETTING: University laboratory. PARTICIPANTS: Twenty-nine participants with SB.
METHODS: Participants completed a load incremented arm ergometer exercise stress
test. WHEEL and Borg Scale ratings were recorded the last 15 seconds of each
1-minute test phase. OUTCOME MEASURES: WHEEL and Borg Scale ratings, metabolic
measures (eg, oxygen consumption, carbon dioxide production). Determined Vpt via
plots of oxygen consumption and carbon dioxide production against time. RESULTS:
Nineteen of 29 participants achieved Vpt (Group A). The mean +/- standard
deviation peak oxygen consumption at Vpt for Group A was 61.76 +/- 16.26. The
WHEEL and Borg Scale RPE at Vpt were 5.74 +/- 2.58 (range 0-10) and 13.95 +/-
3.50 (range 6-19), respectively. A significant linear regression model was
developed (Borg Scale rating = 1.22 x WHEEL Scale rating + 7.14) and used to
create a WHEEL-to-Borg Scale RPE conversion table. CONCLUSION: A significant
linear regression model and table of interchangeable values was developed for
participants with SB. The group-normalized RPE (WHEEL, 5.74; Borg, 13.95) can be
used to prescribe and self-regulate arm ergometer exercise intensity
approximating the Vpt. LEVEL OF EVIDENCE: III.
CI - Copyright (c) 2018. Published by Elsevier Inc.

Langue : ANGLAIS