title: Effects of high-intensity intermittent running exercise in overweight children.
abstract: This study examined the effects of a 6-week intermittent exercise training, at different intensities, on body composition, functional walking and aerobic endurance in overweight children. Forty-eight overweight children (age: 10.4 ± 0.9 years) were randomly assigned to either intervention or control group. Lower and higher intensity intermittent exercise groups (LIIE and HIIE) performed intermittent running three times a week. LIIE performed more intervals at a lower intensity [16 intervals at 100% of individual maximal aerobic speed (MAS), 8 minutes in total], and HIIE performed fewer intervals at a higher intensity (12 intervals at 120% of MAS, 6 minutes in total). Each interval consisted of a 15-second run at the required speed, followed by a 15-second passive recovery. After 6 weeks, HIIE had a significantly (p < 0.05) higher percentage reduction in sum of skinfolds (i.e. calf and triceps), and significantly (p < 0.05) fewer steps during the functional obstacle performance, as compared with LIIE and control group. Significant improvement (p < 0.05) was found in intermittent aerobic endurance for HIIE as compared to the control group. Higher intensity intermittent training is an effective and time-efficient intervention for improving body composition, functional walking and aerobic endurance in overweight children.
authors.affiliation: a Department of Physical Education , The Hong Kong Baptist University , Kowloon Tong , Hong Kong.
authors.forename: Patrick W C
authors.initials: PW
authors.lastname: Lau
authors.forename: Del P
authors.initials: del P
authors.lastname: Wong
authors.forename: Jake K
authors.initials: JK
authors.lastname: Ngo
authors.forename: Y
authors.initials: Y
authors.lastname: Liang
authors.forename: C G
authors.initials: CG
authors.lastname: Kim
authors.forename: H S
authors.initials: HS
authors.lastname: Kim
mesh_terms: D001823:Body Composition; D015992:Body Mass Index; D002648:Child; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D009765:Obesity / Q000517:prevention & control*; D050177:Overweight; D010101:Oxygen Consumption; D010807:Physical Endurance; D005082:Physical Exertion; D010809:Physical Fitness; D012420:Running; D012885:Skinfold Thickness; D016138:Walking
keywords: Interval training; efficiency; fat burn; obese; obesity