OBJECTIVE: Whether accumulating short intermittent bouts of light-to-moderate physical activity (LMPA) can elicit significant improvements in the fitness of sedentary adults, compared to one longer continuous bout. METHODS:Fifty sedentary 35- to 60-year-old adults in Hong Kong were randomly appointed to one of two gender-balanced intervention programs: Exercise Prescription Model (EPM) of 30-minute continuous activity, 3-4 days per week, or a Lifestyle group (LIFE) of 6-minute activity, 5 times per day, 4-5 days per week. Aerobic fitness (VO(2)max), mass, body composition, blood pressure, waist-to-hip ratio, and body mass index (BMI) were assessed at baseline (December 1995) and after 8 weeks. RESULTS: Nearly half of bouts by the LIFE group were < or =6 min, while 85% of the EPM bouts were > or =30 min, with no differences in additional energy expenditure between groups (EPM: 163.0+/-89.6 MET h vs LIFE: 148.2+/-71.6 MET h). Both groups significantly improved their VO(2)max, 7.4% (ES=0.36) and 5.3% (ES=0.24) for the EPM and Lifestyle groups respectively (F((1,43))=34.0, p<0.0001). CONCLUSIONS: Accumulating multiple short bouts of LMPA, of which approximately 50% were < or =6 min, can provide significant improvements in the fitness of sedentary adults that is not dissimilar as one continuous bout of similar total duration.
RCT Entities:
OBJECTIVE: Whether accumulating short intermittent bouts of light-to-moderate physical activity (LMPA) can elicit significant improvements in the fitness of sedentary adults, compared to one longer continuous bout. METHODS: Fifty sedentary 35- to 60-year-old adults in Hong Kong were randomly appointed to one of two gender-balanced intervention programs: Exercise Prescription Model (EPM) of 30-minute continuous activity, 3-4 days per week, or a Lifestyle group (LIFE) of 6-minute activity, 5 times per day, 4-5 days per week. Aerobic fitness (VO(2)max), mass, body composition, blood pressure, waist-to-hip ratio, and body mass index (BMI) were assessed at baseline (December 1995) and after 8 weeks. RESULTS: Nearly half of bouts by the LIFE group were < or =6 min, while 85% of the EPM bouts were > or =30 min, with no differences in additional energy expenditure between groups (EPM: 163.0+/-89.6 MET h vs LIFE: 148.2+/-71.6 MET h). Both groups significantly improved their VO(2)max, 7.4% (ES=0.36) and 5.3% (ES=0.24) for the EPM and Lifestyle groups respectively (F((1,43))=34.0, p<0.0001). CONCLUSIONS: Accumulating multiple short bouts of LMPA, of which approximately 50% were < or =6 min, can provide significant improvements in the fitness of sedentary adults that is not dissimilar as one continuous bout of similar total duration.
Authors: Rodney A Kennedy; Colin A G Boreham; Marie H Murphy; Ian S Young; Nanette Mutrie Journal: J Sports Sci Med Date: 2007-12-01 Impact factor: 2.988
Authors: Richard A Brown; Ana M Abrantes; Haruka Minami; Jennifer P Read; Bess H Marcus; John M Jakicic; David R Strong; Mary Ella Dubreuil; Alan A Gordon; Susan E Ramsey; Christopher W Kahler; Gregory L Stuart Journal: J Subst Abuse Treat Date: 2014-03-01
Authors: Dylan Thompson; Alan M Batterham; Daniella Markovitch; Natalie C Dixon; Adam J S Lund; Jean-Philippe Walhin Journal: PLoS One Date: 2009-02-02 Impact factor: 3.240