Valencell (United States)

The purpose of this study was to assess the role of cardiovascular fitness and emotional state in heart rate recovery after submaximal exercise. Fifty recreationally active subjects (male n=19, females n= 31) completed the study. Height, weight, body composition, and waist circumference were measured, with current emotional state assessed through completion of the Profile of Mood States questionnaire, followed by the Queen’s College Step Test to estimate maximal oxygen consumption (VO 2 max). Heart rate recovery was determined by the difference between assessments of peak heart rate during exercise and 1 minute post-exercise. Heart rate recovery was correlated with VO 2 max, body composition, body mass index, waist circumference, resting heart rate, peak heart rate and the assessed mood states. A moderate negative correlation was found between heart rate recovery and resting heart rate (r = -.307, p = .032) and was the only variable to show significance. The results of this study disagree with previous literature as only one physiologic variable had a significant relationship with heart rate recovery. This may be because the participants recruited for this study were of at least average fitness and there were no significant signs of psychological stress in study participants at the time of testing.

. The purpose of this study was to assess the effects of three different warm-up condi-tions on a 5K cycling time trial (TT). Sixteen trained cyclists completed the study. At the first testing session, participants completed a maximal graded exercise test to assess maximal oxygen consumption (VO2max) and a familiarization of the TT. At three subse-quent visits, the participants completed the TT after no warm up, short warm-up of three minutes at 60% VO2max, or long warm-up of ten minutes at 60% VO2max. The warm-up was assigned in randomized order. VO2, heart rate (HR), lactate, power, and speed were assessed after the warm-up, 1K, and completion of the 5K TT. There was no dif-ference between type of warm-up for time, power, cadence, speed, VO2, HR, or lactate levels at the end of the TT. There was no significant difference between type of warm-up for time, VO2 or HR at the end of the 1K split. Warm-up length was not impactful on 5K TT performance or during the first km of the TT in trained cyclists. These results con-flict with previous evidence indicating that a warm-up in endurance events primarily improved VO2 kinetics at the onset of the exercise.