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Improvement of fitness, body composition, and insulin sensitivity in overweight children in a school-based exercise program: a randomized, controlled study.
Arch Pediatr Adolesc Med. 2005 Oct; 159(10):963-8.AP

Abstract

BACKGROUND

Obesity and poor physical fitness constitute a health problem affecting an increasing number of children. Causes include a pervasive "toxic" environment that facilitates increased caloric intake and reduced physical activity. An effective strategy for prevention and treatment of childhood obesity likely includes a collaborative effort in the school setting.

OBJECTIVE

To determine whether a school-based fitness program can improve body composition, cardiovascular fitness level, and insulin sensitivity in overweight children.

DESIGN

Fifty overweight middle school children with a body mass index (BMI) above the 95th percentile for age were randomized to lifestyle-focused, fitness-oriented gym classes (treatment group) or standard gym classes (control group) for 9 months. Children underwent evaluation of fasting insulin and glucose levels, body composition by means of dual energy absorptiometry, and maximum oxygen consumption (V0(2)max) treadmill testing at baseline (before the school year) and at end of the school year.

SETTINGS

Rural middle school and an academic children's hospital.

MAIN OUTCOME MEASURES

Baseline test results for cardiovascular fitness, body composition, and fasting insulin and glucose levels.

RESULTS

At baseline, there were no differences between groups before intervention (values for age, 12 +/- 0.5 years [all results, mean +/- SD]; BMI [calculated as weight in kilograms divided by the square of height in meters], 31.0 +/- 3.7; percentage of body fat, 36.5% +/- 4.6%; lean body mass, 41.4 +/- 8.6 kg; and V0(2)max, 31.5 +/- 5.1 mL/kg per minute). Compared with the control group, the treatment group demonstrated a significantly greater loss of body fat (loss, -4.1% +/- 3.4% vs -1.9% +/- 2.3%; P = .04), greater increase in cardiovascular fitness (V0(2)max, 2.7 +/- 2.6 vs 0.4 +/- 3.3 mL/kg per minute; P<.001), and greater improvement in fasting insulin level (insulin level, -5.1 +/- 5.2 vs 3.0 +/- 14.3 microIU/mL [-35.4 +/- 36.1 vs 20.8 +/- 99.3 pmol/L]; P = .02).

CONCLUSIONS

Children enrolled in fitness-oriented gym classes showed greater loss of body fat, increase in cardiovascular fitness, and improvement in fasting insulin levels than control subjects. The modification to the school physical education curriculum demonstrates that small but consistent changes in the amount of physical activity has beneficial effects on body composition, fitness, and insulin levels in children. Partnering with school districts should be a part of a public health approach to improving the health of overweight children.

Authors+Show Affiliations

Department of Pediatrics, University of Wisconsin Children's Hospital, University of Wisconsin, 600 Highland Avenue, Madison, WI 53792, USA. alcarrel@wisc.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16203942

Citation

Carrel, Aaron L., et al. "Improvement of Fitness, Body Composition, and Insulin Sensitivity in Overweight Children in a School-based Exercise Program: a Randomized, Controlled Study." Archives of Pediatrics & Adolescent Medicine, vol. 159, no. 10, 2005, pp. 963-8.
Carrel AL, Clark RR, Peterson SE, et al. Improvement of fitness, body composition, and insulin sensitivity in overweight children in a school-based exercise program: a randomized, controlled study. Arch Pediatr Adolesc Med. 2005;159(10):963-8.
Carrel, A. L., Clark, R. R., Peterson, S. E., Nemeth, B. A., Sullivan, J., & Allen, D. B. (2005). Improvement of fitness, body composition, and insulin sensitivity in overweight children in a school-based exercise program: a randomized, controlled study. Archives of Pediatrics & Adolescent Medicine, 159(10), 963-8.
Carrel AL, et al. Improvement of Fitness, Body Composition, and Insulin Sensitivity in Overweight Children in a School-based Exercise Program: a Randomized, Controlled Study. Arch Pediatr Adolesc Med. 2005;159(10):963-8. PubMed PMID: 16203942.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Improvement of fitness, body composition, and insulin sensitivity in overweight children in a school-based exercise program: a randomized, controlled study. AU - Carrel,Aaron L, AU - Clark,R Randall, AU - Peterson,Susan E, AU - Nemeth,Blaise A, AU - Sullivan,Jude, AU - Allen,David B, PY - 2005/10/6/pubmed PY - 2005/11/9/medline PY - 2005/10/6/entrez SP - 963 EP - 8 JF - Archives of pediatrics & adolescent medicine JO - Arch Pediatr Adolesc Med VL - 159 IS - 10 N2 - BACKGROUND: Obesity and poor physical fitness constitute a health problem affecting an increasing number of children. Causes include a pervasive "toxic" environment that facilitates increased caloric intake and reduced physical activity. An effective strategy for prevention and treatment of childhood obesity likely includes a collaborative effort in the school setting. OBJECTIVE: To determine whether a school-based fitness program can improve body composition, cardiovascular fitness level, and insulin sensitivity in overweight children. DESIGN: Fifty overweight middle school children with a body mass index (BMI) above the 95th percentile for age were randomized to lifestyle-focused, fitness-oriented gym classes (treatment group) or standard gym classes (control group) for 9 months. Children underwent evaluation of fasting insulin and glucose levels, body composition by means of dual energy absorptiometry, and maximum oxygen consumption (V0(2)max) treadmill testing at baseline (before the school year) and at end of the school year. SETTINGS: Rural middle school and an academic children's hospital. MAIN OUTCOME MEASURES: Baseline test results for cardiovascular fitness, body composition, and fasting insulin and glucose levels. RESULTS: At baseline, there were no differences between groups before intervention (values for age, 12 +/- 0.5 years [all results, mean +/- SD]; BMI [calculated as weight in kilograms divided by the square of height in meters], 31.0 +/- 3.7; percentage of body fat, 36.5% +/- 4.6%; lean body mass, 41.4 +/- 8.6 kg; and V0(2)max, 31.5 +/- 5.1 mL/kg per minute). Compared with the control group, the treatment group demonstrated a significantly greater loss of body fat (loss, -4.1% +/- 3.4% vs -1.9% +/- 2.3%; P = .04), greater increase in cardiovascular fitness (V0(2)max, 2.7 +/- 2.6 vs 0.4 +/- 3.3 mL/kg per minute; P<.001), and greater improvement in fasting insulin level (insulin level, -5.1 +/- 5.2 vs 3.0 +/- 14.3 microIU/mL [-35.4 +/- 36.1 vs 20.8 +/- 99.3 pmol/L]; P = .02). CONCLUSIONS: Children enrolled in fitness-oriented gym classes showed greater loss of body fat, increase in cardiovascular fitness, and improvement in fasting insulin levels than control subjects. The modification to the school physical education curriculum demonstrates that small but consistent changes in the amount of physical activity has beneficial effects on body composition, fitness, and insulin levels in children. Partnering with school districts should be a part of a public health approach to improving the health of overweight children. SN - 1072-4710 UR - https://www.unboundmedicine.com/medline/citation/16203942/Improvement_of_fitness_body_composition_and_insulin_sensitivity_in_overweight_children_in_a_school_based_exercise_program:_a_randomized_controlled_study_ L2 - https://jamanetwork.com/journals/jamapediatrics/fullarticle/10.1001/archpedi.159.10.963 DB - PRIME DP - Unbound Medicine ER -