Explain bmi of subject physical education 2th
Answers
A cross-sectional study was undertaken on 767 urban male volunteers performing physical activity and 469 age and socioeconomic status matched controls not doing any physical activity from the city limits of North India.
Materials and Methods:
Height and weight were recorded for each participant to determine their Body Mass Index (BMI). Body fat percentage and weight was measured using a body fat monitor.
Results:
Fifty three percent of the physical activity performers showed normal BMI compared to 49% nonphysical activity performers. Overweight was observed in 43.3% physical activity performers compared to 44.7% nonphysical activity performers. Fifty two percent of physical activity performers had normal body fat percent compared to 48.5% nonphysical activity performers. Low body fat percent was observed in 23.4% physical activity performers compared to 2.7% nonphysical activity performers. High body fat percent was observed in 48.7% nonphysical activity performers compared to 45.8% physical activity performers.
Conclusions:
Overall, the study suggested that physical activity alone cannot maintain BMI and body fat percent, but it can reduce the risk of overweight and high body fat percent in the population.
Keywords: Body fat percentage, body mass index, physical activity
INTRODUCTION
In the modern society, inactivity or low level of physical activity combined with changes in eating habits are believed to be the main reasons for the increased prevalence of overweight/obesity among children and adolescents.[1] The genetic differences in weight gain among them also make them vulnerable to overweight. As physical activity is an important component in weight control and also associated with other major health benefits,[2] its role in youth health is fundamental. Studies have shown a significant correlation between high physical fitness and a low body fat.[3] Physical activity measured as number of steps per day was inversely correlated to percentage body fat as well as to Body Mass Index (BMI) in adults.[4] However in children, no such correlation was observed.[5] It is therefore difficult to know whether inactivity causes obesity or obesity leads to inactivity. Guidelines for physical activity levels in children and adolescents recommend at least 60 minutes of accumulated moderate to vigorous physical activity per day.[6] There are several difficulties to measure the total daily accumulate physical activity in the field studies for each subject. Many other factors besides individual level of daily physical activity for a healthy lifestyle are cultural, social, and personal.[7] Physical activity intervention had no effect on BMI in children.[8] Data on the inter-relationship between BMI and physical activity are limited. A clear understanding of the effect of physical activity on BMI is lacking. The present study was undertaken to assess the influence of physical activity on maintaining normal grades of BMI and body fat percent among North Indian population.
MATERIALS AND METHODS
Study population
Health camp for monitoring of body composition was organized for public by our institution. One thousand two hundred and thirty six urban male visitors volunteered for the study. We have categorized the volunteers participated in the study into two groups: (a) volunteers performing any one form of physical activity and (b) volunteers not doing any physical activity.
Inclusion criteria for volunteers doing physical activity: volunteers should perform yoga exercises or weight-reduction exercises or walking during morning or evening at least three days a week in addition to daily physical activities. Exclusion criteria of volunteers: volunteers with major health complaints like cardiovascular diseases, metabolic disorders, etc. Control population was screened on the basis of not doing any physical activity or exercise (inclusion criteria) other than daily physical activities with no major health problems.