title: Ultra short-term heart rate recovery after maximal exercise in continuous versus intermittent endurance athletes.
abstract: This study tested the hypothesis that athletes participating in intermittent sports would exhibit a faster heart rate recovery (HRR) during the initial phase (<30 s) following maximal exercise than athletes participating in continuous endurance sports. Forty-six male athletes were allocated into continuous (CNT, n = 24) or intermittent groups (INT, n = 22), matched for age and aerobic fitness. Athletes performed maximal exercise on a treadmill using the ramp protocol. Immediately upon exercise cessation, subjects were placed supine with continuous measurement of HR during the first minute of recovery. Data were analyzed in 10-s intervals and compared between the groups. Repeated measures ANOVA showed a group x time interaction effects (p <or= 0.01) for HRR expressed in both beats min(-1) and in percentage of peak post-exercise HR (% HR(peak)). The INT group had lower HR than CNT group at 10 s (189 vs. 192 beats min(-1), p = 0.04; and 96.3 vs. 97.9% HR(peak), p = 0.009) and 20 s (184 vs. 188 beats min(-1), p = 0.049; and 93.6 vs. 95.7% HR(peak), p = 0.021) intervals of recovery. The results suggest that athletes engaged in intermittent sports are likely to have faster HRR during the first 20 s after maximal exercise than their counterparts trained for continuous performance.
authors.affiliation: Exercise Physiology Lab, Biomedical Sciences Department, Faculty of Sport and Tourism, Metropolitan University, Radnicka 30/II, 21000, Novi Sad, Serbia. sergej@panet.rs
authors.forename: Sergej M
authors.initials: SM
authors.lastname: Ostojic
authors.forename: G
authors.initials: G
authors.lastname: Markovic
authors.forename: J
authors.initials: J
authors.lastname: Calleja-Gonzalez
authors.forename: D G
authors.initials: DG
authors.lastname: Jakovljevic
authors.forename: V
authors.initials: V
authors.lastname: Vucetic
authors.forename: M D
authors.initials: MD
authors.lastname: Stojanovic
mesh_terms: D000204:Activity Cycles; D056352:Athletes; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D010507:Periodicity; D010807:Physical Endurance / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult