Article

OBJECTIVE: To investigate the effect of stage duration on peak physiological
response to arm ergometry incremental exercise testing in individuals with spinal
cord injury or disease (SCI/D) in support of developing a more individualized
approach to testing. DESIGN: Parallel reliability study. SETTING: University
research laboratory. PARTICIPANTS: Individuals with SCI/D (N=38) performed 2 peak
oxygen consumption assessments comprised of 1-minute or 3-minute stages on 1 day.
INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Heart rate and oxygen
consumption were recorded continuously from baseline through recovery. Every 1
minute or 3 minutes, resistance increased at an individualized level, and
participants continued until volitional fatigue. The highest 30-second average
was selected as peak oxygen consumption (Vo2peak) and peak heart rate. The
highest workload achieved for >/=30 seconds was recorded as peak power output
(PO). RESULTS: Intraclass correlation coefficients (ICCs) were >.95 for the
following variables: absolute Vo2peak (mean +/- SD, 1min: 1.2+/-0.7, 3min:
1.2+/-.62L/min; 95% CI, .91-.98), relative Vo2peak (mean +/- SD, 1min:
16.6+/-9.4, 3min: 15.8+/-8.0mL/kg/min; 95% CI, .90-.98), absolute peak PO (mean
+/- SD, 1min: 61+/-41, 3min: 66+/-41W; 95% CI, .92-.98), and relative peak PO
(mean +/- SD, 1min: .80+/-56, 3min: .90+/-.55W/kg; 95% CI, .91-.98). There was no
significant difference in peak heart rate between 3 minutes (132+/-27 beats per
minute [bpm]) and 1 minute (130+/-28 bpm); however, the ICC lower limit was <.75
(0.67-0.90). Total test time was significantly longer in the 3-minute
(8:17+/-2:52min:s) than in the 1-minute (6:29+/-2:21min:s) protocol. CONCLUSIONS:
For measuring peak physiological values in an incremental arm ergometry test,
stage duration is of little consequence because similar values were obtained for
the main outcome measures in both protocols.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS