Investigation of the relation among BMI, physical fitness and self-perception
Poster Presentation
Paper ID : 1119-12THCONG
Oral / Poster Presentation File: 1119-THCONG.jpg
Authors
1department of motor behavior, faculty of physical education and sport sciences, university of Tabriz, Tabriz, Iran.
2Department of motor behavior, faculty of physical education and sport sciences, university of Tabriz, Tabriz, Iran
Abstract
Physical activity improves physical self-perception structure, including self-esteem. This structure acts as a mediator between physical activity and mental states and facilitates the achievement of other demands, like increased endurance, continuity of exercise and health-related fitness. BMI is one of the predictors of physical activity. There is a significant negative correlation between BMI and cognitive-motor abilities and the reason is the amount of excess body mass that can lead to ineffective biomechanical movements and is detrimental to motor skill.
The aim of this study was to investigate the relation between BMI, physical fitness and self-perception among adult women.
160 adult women (19-50 years old) of Tabriz were selected in two homogeneous groups (80=active group, 80=inactive group) by using random-cluster sampling method. The short form of Physical Self-Descriptive Questionnaire was used to study the physical self-perception. BMI was measured, too. Data were analyzed by Pearson correlation coefficient and backward regression at P≤0.05.
The results showed that BMI had a significantly negative relation with all of physical fitness factors (-0.575≤ r ≤-0.297) and a significantly positive relation with reaction time (r=0.352). Also, the results showed that BMI had a significantly negative relation with all of physical self-perception subscales (-0.653≤ r ≤-0.182) except the physical activity subscale. The results of backward regression model to prediction of BMI from physical self-perception subscales showed that this model is significant (R2=0.533, P≤0.0001). Body fat (Beta=-0.593), physical activity (Beta=0.260) and endurance (Beta=-252) significantly predicted BMI. In addition, the result of backward regression model to prediction of BMI from physical fitness factors showed that this model is significant (R2=0.460, P≤0.0001). Balance (Beta=0.263), sit-ups (Beta=-0.394), pushups (Beta=363) and Burpee test (Beta=-0.495) significantly predicted BMI.
The results showed that BMI could be predicted by both of physical fitness and physical self-perception. In the other words, people with higher BMI have problems in their perception of their bodies, physical and mental abilities and also in doing physical activities. Results were in line with physical self-perception hierarchical model that shows that physical self-perception is a combination of physical fitness factors, health, sport competence, body composition and appearance.
The aim of this study was to investigate the relation between BMI, physical fitness and self-perception among adult women.
160 adult women (19-50 years old) of Tabriz were selected in two homogeneous groups (80=active group, 80=inactive group) by using random-cluster sampling method. The short form of Physical Self-Descriptive Questionnaire was used to study the physical self-perception. BMI was measured, too. Data were analyzed by Pearson correlation coefficient and backward regression at P≤0.05.
The results showed that BMI had a significantly negative relation with all of physical fitness factors (-0.575≤ r ≤-0.297) and a significantly positive relation with reaction time (r=0.352). Also, the results showed that BMI had a significantly negative relation with all of physical self-perception subscales (-0.653≤ r ≤-0.182) except the physical activity subscale. The results of backward regression model to prediction of BMI from physical self-perception subscales showed that this model is significant (R2=0.533, P≤0.0001). Body fat (Beta=-0.593), physical activity (Beta=0.260) and endurance (Beta=-252) significantly predicted BMI. In addition, the result of backward regression model to prediction of BMI from physical fitness factors showed that this model is significant (R2=0.460, P≤0.0001). Balance (Beta=0.263), sit-ups (Beta=-0.394), pushups (Beta=363) and Burpee test (Beta=-0.495) significantly predicted BMI.
The results showed that BMI could be predicted by both of physical fitness and physical self-perception. In the other words, people with higher BMI have problems in their perception of their bodies, physical and mental abilities and also in doing physical activities. Results were in line with physical self-perception hierarchical model that shows that physical self-perception is a combination of physical fitness factors, health, sport competence, body composition and appearance.
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