Author : Amy Clark
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (14 download)
Book Synopsis The Effects of Low Volume High Intensity Interval Training Vs. Periodized High Intensity Interval Training on Cardiorespiratory Fitness in Sedentary Women with Obesity by : Amy Clark
Download or read book The Effects of Low Volume High Intensity Interval Training Vs. Periodized High Intensity Interval Training on Cardiorespiratory Fitness in Sedentary Women with Obesity written by Amy Clark and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To investigate effects of two high intensity interval training (HIIT) regimes on changes in maximal oxygen uptake (VO2max), O2 pulse and ventilatory threshold (VT) in obese, sedentary women. Methods: 17 obese sedentary women (age and BMI=37.5±10.5 years and 39.0±4.7 kg/m2) participated in a six-week exercise intervention with three training sessions per week. Participants were randomized to low volume HIIT (LOW) (n=9, VO2max=21.5±3.2 mL/kg/min) or periodized HIIT (PER) (n=8, VO2max=17.3±2.4mL/kg/min). VO2max and peak power output (PPO) were measured on a cycle ergometer at baseline and at 3 and at 6 weeks using a ramp exercise test. Women in LOW completed repeated 60 second bouts of HIIT at 70-85% PPO; whereas, women in PER performed a different number of bouts and intensities each week. Results: There was a significant difference in relative (p=0.002; LOW: 21.5±3.2 vs. 22.5±3.2 mL/kg/min; PER: 17.3±2.41 vs. 18.0±2.2 mL/kg/min) and absolute (p=0.001; LOW: 2.1±0.3 vs. 2.2±0.3 L/min; PER: 1.9±0.4 vs. 2.0±0.3 L/min) VO2max across time, but no interaction (p=0.79 and p=0.53). There was no change in VT expressed as VT % VO2max (p=0.24) yet there was a group X time interaction (p=0.043). VT expressed in Watts was significantly different over time (p=0.001) but there was no group X time interaction (p=0.09). O2 pulse significantly increased from pre- to post-training (p=.003) but there was no time X group interaction (p=0.95). Conclusion: Although there were no significant differences between regimes, HIIT elicits significant changes in VO2max, O2 pulse and VT in sedentary women with obesity, which are improve health status.