Effect of sprint interval training on circulatory function during exercise in sedentary, overweight/obese women

Very high-intensity, low-volume, sprint interval training (SIT) increases muscle oxidative capacity and may increase maximal oxygen uptake ( ), but whether circulatory function is improved, and whether SIT is feasible in overweight/obese women is unknown. To examine the effects of SIT on and circula...

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Bibliographic Details
Published in:European journal of applied physiology 2011-08, Vol.111 (8), p.1591-1597
Main Authors: Trilk, Jennifer L., Singhal, Arpit, Bigelman, Kevin A., Cureton, Kirk J.
Format: Article
Language:English
Subjects:
Acceleration
Adult
Athletic Performance - physiology
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Blood Circulation - physiology
Body mass index
Cardiovascular disease
Cardiovascular Physiological Phenomena
Diabetes
Exercise
Exercise - physiology
Female
Fundamental and applied biological sciences. Psychology
Health care
Heart rate
Human Physiology
Humans
Hypertension
Interval training
Mortality
Obesity
Obesity - physiopathology
Occupational Medicine/Industrial Medicine
Original Article
Overweight
Overweight - physiopathology
Physical Education and Training - methods
Physical fitness
Physical Fitness - physiology
Running - physiology
Sedentary Lifestyle
Sports Medicine
Time Factors
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Womens health
Workloads
Young Adult
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Summary:Very high-intensity, low-volume, sprint interval training (SIT) increases muscle oxidative capacity and may increase maximal oxygen uptake ( ), but whether circulatory function is improved, and whether SIT is feasible in overweight/obese women is unknown. To examine the effects of SIT on and circulatory function in sedentary, overweight/obese women. Twenty-eight women with BMI > 25 were randomly assigned to SIT or control (CON) groups. One week before pre-testing, subjects were familarized to testing and the workload that elicited 50% was calculated. Pre- and post-intervention, circulatory function was measured at 50% of the pre-intervention , and a GXT was performed to determine . During the intervention, SIT training was given for 3 days/week for 4 weeks. Training consisted of 4–7, 30-s sprints on a stationary cycle (5% body mass as resistance) with 4 min active recovery between sprints. CON maintained baseline physical activity. Post-intervention, heart rate (HR) was significantly lower and stroke volume (SV) significantly higher in SIT (−8.1 and 11.4%, respectively; P  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-010-1777-z