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Acute bout of sprint interval vs. endurance exercise on insulin senstivity
Author(s) -
Arciero Paul Joseph,
Clippinger Ben jamin,
Spinella Thomas,
Relyea Eryn,
Bonitatibus Danielle,
Gerson Laura
Publication year - 2007
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.21.5.a576-c
Subject(s) - sprint , medicine , insulin , insulin sensitivity , endocrinology , physical therapy , insulin resistance
An acute bout of endurance exercise (EE; ~45min) enhances insulin sensitivity (IS), whereas less is known regarding an acute bout of repeated sprint interval exercise (SIE). Thus, we tested the hypothesis that an acute bout of five 30sec sprints performed at 125% of VO 2peak (SIE) would increase IS similar to EE for 45 minutes at 70% VO 2peak . Eight healthy, sedentary, males (18–22yrs; VO 2peak 45.2±4.6 ml.kg.min −1 ; <1.5 d/wk structured exercise; % body fat, 16.5±3.4) underwent three oral glucose tolerance tests (OGTT) following three conditions: no exercise the day before (OGTT N‐EX ); SIE the day prior (OGTT SIE ); and EE the day prior (OGTT EE ). SIE and EE sessions were randomized for each subject. Subjects consumed identical meals on the day preceding each OGTT. IS following OGTT EE was significantly increased (10±2, P<0.05) compared to the OGTT N‐EX and SIE (5.6±2.5, 7.8±2.4, respectively), whereas OGTT SIE showed a strong trend (P<0.08) to be increased from OGTT N‐EX . These findings suggest that an acute bout of EE improves OGTT IS more than an acute bout of repeated SIE in normal healthy male subjects.