Key result
Moderate or high-intensity interval training over 12 weeks significantly reduced ratings of perceived exertion during training in sedentary women, but did not alter arousal or affect.
Why the study?
Does 12 weeks of high-intensity interval training alter perceptual measures (RPE, affect, arousal) in healthy sedentary women?
RCT (n=30)
Randomized
Does 12 weeks of high-intensity interval training alter perceptual measures (RPE, affect, arousal) in healthy sedentary women?
12 weeks of HIIT reduces perceived exertion during training in sedentary women, but does not alter affect or arousal.
Supports HIIT tolerability in sedentary women; extends RCT evidence on differential perceptual responses to interval training.
This study examined acute and chronic changes in perceptual measures (rating of perceived exertion [RPE], affect, and arousal) in response to 2 regimens of high-intensity interval training (HIIT). Twenty-three healthy sedentary women (mean ± SD age and V[Combining Dot Above]O2max = 23.0 ± 5.7 years and 30.1 ± 4.4 ml·kg·min, respectively) were randomized to complete 12 weeks of one of 2 HIIT regimes, whereas an additional 7 women served as sedentary controls. Training was performed 3 days per week on a cycle ergometer and consisted of up to ten 1-minute bouts at moderate (60-80%Wmax = moderate intensity [MOD]) or more intense (80-90%Wmax = HI) workloads separated by active recovery. At baseline and every 3 weeks, RPE, affect, and arousal were measured during training using validated scales. Repeated measures analysis of variance was used to examine acute and chronic changes in these variables to HIIT. Data revealed significant (p < 0.001) increases in RPE and arousal and decreases (p < 0.001) in affect during acute HIIT, with RPE responses differing (p ≤ 0.05) between HI and MOD. However, acute changes in affect and arousal were similar in HI and MOD. Training led to a significant reduction in RPE, whereas both affect and arousal were unchanged (p > 0.05) after HIIT. Completion of moderate or more intense interval training reduces perceptions of RPE during training yet does not alter arousal or affect. RPE was reduced via training, yet large dependence on anaerobic metabolism during HIIT may minimize training-induced changes in affect.
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Astorino et al. (2015) conducted an RCT in Healthy sedentary (n=30). High-intensity interval training (HIIT) vs. Sedentary controls and alternate HIIT regimen was evaluated on Acute and chronic changes in perceptual measures (rating of perceived exertion [RPE], affect, and arousal). Moderate or high-intensity interval training over 12 weeks significantly reduced ratings of perceived exertion during training in sedentary women, but did not alter arousal or affect.
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