BODY COMPOSITION AS RELATED TO AGE AND GENDER IN PRE-ADOLESCENTS (9-12 YEARS)
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Date
2004
Authors
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ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD
Abstract
Adolescence comprises of nearly half of the catchup growth period in
human being. Growth and maturity produce changes in body composition
and fat distribution which are affected by age, gender, nutritional status,
diet, physical activity, hormones etc.
Hence, the present study was initiated with the main objective of
body composition as related to age, gender and nutritional status during preadolescence
(9-12 years), to assess body composition from skinfold
thickness (SFT) and Body Stat 1500 Analyser (BSA), to assess nutritional
status by anthropometry, to assess differences in body composition of boys
and girls, to identify factors affecting body composition and assessing
glucose levels of over weight subjects.
The study was conducted on pre-adolescents of 9-12 years. A number
of 150 subjects from each group viz., 9-10, 10-11 and 11-12 years were (75
girls and 75 boys) studied from government and private schools of
Hyderabad and Secunderabad.
Age and gender related changes in anthropometric measurements
indicated that the height, weight, BMI and skinfold thickness increased with
an increase in age indicating growth and development during preadolescence
(9-12 years). There was no significant difference in height and
weight between boys and girls. The sum of four skinfold thickness was
higher in girls than boys indicating higher fat content in girls.
Nutritional status of subjects indicated that the majority of the
subjects were nearer to NCHS standards indicating normal linear growth.
According to BMI and weight for age classification, majority of the subjects
of all the age groups were graded under severe chronic energy deficiency,
normal and mild malnutrition group respectively.
Age and gender related differences in body composition indicated
that Body Stat 1500 Analyser (BSA) fat mass (% and kg) decreased with an
increase in age whereas it was decreased when derived from skinfold
thickness (SFT) in boys and girls. Both BSA and SFT fat free mass (% and
kg) increased with an increase in age significantly in boys and girls. Mean
fat free mass (% and kg) and water (% and kg) were significantly higher in
boys than girls and the mean fat (% and kg) was significantly higher in girls
than boys in all the age groups.
Body composition as related to weight indicated that the mean lean
body mass was significantly higher in the subjects who had maximum
weight than the subjects with minimum weight in both boys and girls.
BSA fat mass (% and kg) and fat free mass (% and kg) were
significantly differed from SFT fat mass (% and kg) and SFT fat free mass
(% and kg) in pre-adolescents indicating BSA was not suitable to assess
body composition during pre-adolescence (9-12 years).
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Keywords
BODY, COMPOSITION, RELATED, AGE, GENDER, PRE-ADOLESCENTS, 9-12 YEARS