Perceptually regulated training does not influence the differentiated RPE response following 16-weeks of aerobic exercise in adults with spinal cord injury
journal contributionposted on 20.06.2019 by Michael Hutchinson, Sydney E. Valentino, Julia Totosy de Zepetnek, Maureen J. Macdonald, Vicky Goosey-Tolfrey
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This study investigated the effect of prolonged familiarisation with ratings of perceived exertion (RPE) on the peripheral (RPEP) and central (RPEC) RPE responses to moderate-vigorous exercise in adults with spinal cord injury (SCI). RPEP and RPEC characterize the exertion of the working musculature and cardiorespiratory systems, respectively. Nineteen participants (41.4±11.4 years; 19.2±7.2 ml·kg-1·min-1) with chronic SCI were randomly assigned to RPE-guided (n = 11; EXP) or active control (n = 8; CON) groups. EXP performed 16-weeks of RPE-guided, supervised aerobic training for 20 mins, twice weekly, at RPE 3-6 (Category-Ratio 10 scale). CON had access to the same exercise equipment but received no specific advice on their exercise-training regime. Participants completed a graded exercise test, using an arm crank ergometer, pre- and post-training to determine peak oxygen uptake (V̇O2peak), with RPEP and RPEC recorded every minute throughout tests. Sixteen weeks training did not improve V̇O2peak. RPE decreased post-training at 50% (p = 0.02) and 70% V̇O2peak (p = 0.03), though there was no effect of group at either intensity (p = 0.54, 0.42 respectively). At 70% V̇O2peak RPEP was greater than RPEC (4.2±1.7 vs 3.4±1.8, p < 0.005). Training with RPE-guidance for 16-weeks had no additional effect on the differentiated RPE responses to moderate-vigorous exercise in adults with SCI.
Ontario Neurotrauma Foundation, Peter Harrison Foundation, and Loughborough University Sport & Exercise Beacon.
- Sport, Exercise and Health Sciences