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Moderate Intensity Intermittent Exercise Modality May Prevent Cardiovascular Drift

Faculty of Sport Sciences, Ege University, 35100 Izmir, Turkey
Author to whom correspondence should be addressed.
Sports 2018, 6(3), 98;
Received: 14 July 2018 / Revised: 6 September 2018 / Accepted: 7 September 2018 / Published: 15 September 2018
(This article belongs to the Special Issue Physiological Responses During Exercise)
PDF [760 KB, uploaded 15 September 2018]


Cardiovascular drift (CV-Drift) may occur after the ~10th min of submaximal continuous exercising. The purpose of this study was to examine whether CV-Drift is prevented by an intermittent exercise modality, instead of a continuous exercise. Seven well-trained male cyclists volunteered to take part in the study ( V ˙ O2max: 61.7 ± 6.13 mL·min−1·kg−1). Following familiarization sessions, athletes’ individual maximal O2 consumption ( V ˙ O2max), maximum stroke volume responses (SVmax), and cardiac outputs (Qc) were evaluated by a nitrous-oxide re-breathing system and its gas analyzer. Then, continuous exercises were performed 30 min at cyclists’ 60% V ˙ O2max, while intermittent exercises consisted of three 10 min with 1:0.5 workout/recovery ratios at the same intensity. Qc measurements were taken at the 5th, 9th, 12nd, 15th, 20th, 25th, and 30th min of continuous exercises versus 5th and 10th min of workout phases of intermittent exercise modality. Greater than a 5% SV decrement, with accompanying HR, increase, while Qc remained stable and was accepted as CV-Drift criterion. It was demonstrated that there were greater SV responses throughout intermittent exercises when compared to continuous exercises (138.9 ± 17.9 vs. 144.5 ± 14.6 mL, respectively; p ≤ 0.05) and less HR responses (140.1 ± 14.8 vs. 135.2 ± 11.6 bpm, respectively; p ≤ 0.05), while mean Qc responses were similar (19.4 ± 2.1 vs. 19.4 ± 1.5 L, respectively; p > 0.05). Moreover, the mean times spent at peak SV scores of exercise sessions were greater during intermittent exercise (1.5 vs. 10 min) (p < 0.001). In conclusion, intermittent exercises reduce CV-Drift risk and increases cardiac adaptation potentials of exercises with less physiological stress. View Full-Text
Keywords: cardiac output; cardiovascular drift; interval training; stroke volume cardiac output; cardiovascular drift; interval training; stroke volume

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Colakoglu, M.; Ozkaya, O.; Balci, G.A. Moderate Intensity Intermittent Exercise Modality May Prevent Cardiovascular Drift. Sports 2018, 6, 98.

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