Key result
Continuous exercise induced significantly higher heart rate, ventilation, and mouth occlusion pressure compared to interval exercise at the same relative intensity (P<0.05).
Why the study?
The study was conducted to explore the respiratory response to acute interval versus continuous exercise at low and high intensities.
Does interval exercise induce milder respiratory responses compared to continuous exercise in recreational athletes?
Does interval exercise induce milder respiratory responses compared to continuous exercise in recreational athletes?
p-value: p=<0.05
Continuous exercise stimulates respiration more than interval exercise when performed at the same relative intensity in recreational athletes.
Continuous exercise may provoke greater ventilatory demand than interval at matched intensity; leaves open optimal modality selection for respiratory-limited patients.
The purpose of this study was to explore the respiratory response of acute interval and continuous exercise (CE) of low and high intensity. Fourteen recreational athletes (7 men and 7 women; VO2max = 35.7 ± 6.1 mlkg–1min–1) performed a bout of continuous and a bout of interval exercise (IE) both consisted of 5-min cycling at low intensity [80% of the power output (W) of the predetermined gas exchange threshold (GET) (80%WGET)] and 5-min cycling at high intensity {WGET plus the work rate corresponding to 50% of the difference between peak power output (PPO) at oxygen uptake (VO2max) test and the WGET [WGET + 0.50 Δ(PPO – WGET)]}. CE compared to IE induced significant higher heart rate and ventilation as well as significant higher levels of mouth occlusion pressure for 0.1 s (P0.1) (P < 0.05) during low and high intensities. Our results indicate that CE stimulates respiration more than IE when the exercise is performed at the same relative intensity.
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Thomakos et al. (2020) studied Healthy recreational athletes (n=14). Interval exercise vs. Continuous exercise was evaluated on Heart rate, ventilation, and mouth occlusion pressure for 0.1 s (P0.1) (p=<0.05). Continuous exercise induced significantly higher heart rate, ventilation, and mouth occlusion pressure compared to interval exercise at the same relative intensity (P<0.05).
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