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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
A Journal on Internal Medicine and Pharmacology
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2011 April;170(2):103-12
The relationship between aerobic fitness and daily physical activities in nonathletic adults with atheto-spastic cerebral palsy
Satonaka A. 1, Suzuki N. 1, Kawamura M. 2
1 Rehabilitation Section, Department of Work Physiology, The Institute for Developmental Research, Aichi Human Service Center, Kasugai-shi, Japan
2 Physical Therapy Section, Department of Rehabilitation, Graduate School of Medicine, Nagoya University, Nagoya, Japan
Aim: The purpose of this study was to investigate the relationships between aerobic fitness and daily physical activities of adults with cerebral palsy who had no occasions to do exercise or sports.
Methods. Study participants were 18 nonathletic adults with atheto-spastic cerebral palsy. Continuous heart rates were recorded during their ordinary daily activities. The maximal oxygen uptake (VO2max) was estimated by submaximal exercise testing. 1) VO2max was compared with the total amount of time of aerobic physical activities; 2) VO2max was compared with the skewness of frequency distribution of the continuous heart rates that would reflect the active or inactive trend of physical activities; 3) comprehensively contributing factors for VO2max were assessed by multiple regression analysis.
Results. 1) Significant relationships were not found between VO2max and the total amount of time of aerobic physical activities; 2) total VO2max was significantly correlated to the skewness on weekdays (r=-0.56, P<0.05). VO2max normalized by body weight was also significantly correlated to the skewness (r=-0.46, P=0.05). 3) Only the skewness was a significant contributor for VO2max (β=-0.57; P<0.05).
Conclusion. Despite the commonly held belief the intensity and total amount of time of aerobic physical activity did not affect the subjects’ aerobic fitness. However, the skewness could affect their aerobic fitness. The cluster of physical activities that made frequency distribution of heart rates skewed to the left, which would consist of brief and frequent physical activities, was thought to improve aerobic fitness of adults with atheto-spastic cerebral palsy.