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Is Moderate Intensity Exercise Training Combined with High Intensity Interval Training More Effective at Improving Cardiorespiratory Fitness than Moderate Intensity Exercise Training Alone?
- Source :
-
Journal of Sports Science & Medicine . Sep2014, Vol. 13 Issue 3, p702-707. 6p. - Publication Year :
- 2014
-
Abstract
- The purpose of this study was to compare the effectiveness of either continuous moderate intensity exercise training (CMIET) alone vs. CMIET combined with a single weekly bout of high intensity interval training (HIIT) on cardiorespiratory fitness. Twenty nine sedentary participants (36.3 ± 6.9 yrs) at moderate risk of cardiovascular disease were recruited for 12 weeks of exercise training on a treadmill and cycle ergometer. Participants were randomised into three groups: CMIET + HIIT (n = 7; 8-12 x 60 sec at 100% VO2max, 150 sec active recovery), CMIET (n = 6; 30 min at 45-60% oxygen consumption reserve (VO2R)) and a sedentary control group (n = 7). Participants in the CMIET + HIIT group performed a single weekly bout of HIIT and four weekly sessions of CMIET, whilst the CMIET group performed five weekly CMIET sessions. Probabilistic magnitude-based inferences were determined to assess the likelihood that the true value of the effect represents substantial change. Relative VO2max increased by 10.1% (benefit possible relative to control) in in the CMIET + HIIT group (32.7 ± 9.2 to 36.0 ± 11.5 mL•kg- 1•min-1) and 3.9% (benefit possible relative to control) in the CMIET group (33.2 ± 4.0 to 34.5 ± 6.1 mL•kg-1•min-1), whilst there was a 5.7% decrease in the control group (30.0 ± 4.6 to 28.3 ± 6.5 mL•kg-1•min-1). It was ‘unclear’ if a clinically significant difference existed between the effect of CMIET + HIIT and CMIET on the change in VO2max. Both exercising groups showed clinically meaningful improvements in VO2max. Nevertheless, it remains ‘unclear’ whether one type of exercise training regimen elicits a superior improvement in cardiorespiratory fitness relative to its counterpart. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AEROBIC exercises
*ANALYSIS of variance
*ANTHROPOMETRY
*CARDIOPULMONARY system physiology
*CARDIOVASCULAR diseases risk factors
*CLINICAL trials
*EXERCISE physiology
*HEART rate monitoring
*LONGITUDINAL method
*PHYSICAL fitness
*STATISTICAL sampling
*STATISTICS
*DATA analysis
*EFFECT sizes (Statistics)
*TREADMILLS
*RANDOMIZED controlled trials
*PRE-tests & post-tests
*OXYGEN consumption
*ERGOMETRY
*EXERCISE intensity
*SEDENTARY lifestyles
*DATA analysis software
*DESCRIPTIVE statistics
Subjects
Details
- Language :
- English
- ISSN :
- 13032968
- Volume :
- 13
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Sports Science & Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 97753461