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Purpose: To examine the relationship between ratings of perceived exertion (RPE) and physiological variables in able bodied and paraplegic athletes during arm crank ergometry (ACE). Methods: Eight male upper body trained able-bodied athletes (AB) and eight male paraplegic athletes (PA; T3 – L1) undertook an incremental ACE test to volitional exhaustion (35W every 2 min, 70 rev.min-1). Expired gas was collected via the Douglas bag technique in the final minute of each stage and analysed for minute ventilation (VE) and oxygen consumption (VO2). Heart rate and RPE were recorded during the last 15 seconds of each stage. Differences between groups for workloads of 35, 70 and 105W were analysed by two-way analysis of variance. Relationships between variables were analysed via Pearsons' correlation. Results: Heart rate was greater for PA when compared to AB between 35 and 105W (main effect; P<0.05) whereas VO2 was lower. No differences were observed for VE or RPE (P>0.05). Significant correlations (r=0.73–0.87; P<0.05) were observed between RPE and VO2, %VO2peak, HR and %HRpeak for both groups. VE vs. RPE was best expressed as a curvilinear function. Conclusions: The relationship between RPE and physiological variables in AB and PA athletes during incremental submaximal ACE appears similar.
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