The purpose of this study was to evaluate the ability of S-RPE to evaluate
training load during
interval training, with different durations of the hard/easy segments. Recreational athletes (N = 12) performed a 30-min bout at 90% of anaerobic threshold. Each also performed interval training at the same mean power output, but with hard/easy (1:1 ratio) segments of 0.5, 1.0, and 2.0 minutes (power output during hard/easy were + 25%
steady state). Training load was calculated using the S-RPE method and a summated heart
rate score, based on heart rate zones (HR-Z) related to HRmax.
Regression lines for both methods were essentially the same. Both S-RPE and HR-Z methods were related to objective markers of
exercise intensity (VO2 and blood lactate).
S-RPE can assess the relative exercise loading during interval training as well as during steady state exercise.
Implication. Session-RPE is a useful method for judging exercise intensity during variable workload activities (interval training) as well as steady state exercise
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