Effects of exercise intensity on cardiovascular fitness, total body composition, and visceral adiposity of obese adolescents

Bernard Gutin, Paule Barbeau, Scott Owens, Christian Lemmon, Mara Bauman, Jerry David Allison, Hyun Sik Kong, Mark S. Litaker

Research output: Contribution to journalArticle

296 Citations (Scopus)

Abstract

Background: Little is known about how the intensity of exercise influences cardiovascular fitness and body composition, especially in obese adolescents. Objective: Our goal was to determine the effects of physical training intensity on the cardiovascular fitness, percentage of body fat (%BF), and visceral adipose tissue (VAT) of obese adolescents. Design: Obese 13-16-y-olds (n = 80) were assigned to 1) biweekly lifestyle education (LSE), 2) LSE + moderate-intensity physical training, or 3) LSE + high-intensity physical training. The intervention lasted 8 mo. Physical training was offered 5 d/wk, and the target energy expenditure for all subjects in physical training groups was 1047 kJ (250 kcal)/session. Cardiovascular fitness was measured with a multistage treadmill test, %BF with dual-energy X-ray absorptiometry, and VAT with magnetic resonance imaging. Results: The increase in cardiovascular fitness in the high-intensity physical training group, but not in the moderate-intensity group, was significantly greater than that in the LSE alone group (P = 0.009); no other comparisons of the 3 groups were significant. Compared with the LSE alone group, a group composed of subjects in both physical training groups combined who attended training sessions ≥2 d/wk showed favorable changes in cardiovascular fitness (P < 0.001), %BF (P = 0.001), and VAT (P = 0.029). We found no evidence that the high-intensity physical training was more effective than the moderate-intensity physical training in enhancing body composition. Conclusions: The cardiovascular fitness of obese adolescents was significantly improved by physical training, especially high-intensity physical training. The physical training also reduced both visceral and total-body adiposity, but there was no clear effect of the intensity of physical training.

Original languageEnglish (US)
Pages (from-to)818-826
Number of pages9
JournalAmerican Journal of Clinical Nutrition
Volume75
Issue number5
StatePublished - May 7 2002

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Adiposity
adiposity
Body Composition
lifestyle
body composition
Life Style
exercise
Exercise
Intra-Abdominal Fat
education
Education
adipose tissue
exercise test
dual-energy X-ray absorptiometry
higher education
Photon Absorptiometry
Exercise Test
magnetic resonance imaging
energy expenditure
Energy Metabolism

Keywords

  • Body composition
  • Cardiovascular fitness
  • Diet
  • Exercise
  • Intraabdominal fat
  • Obese adolescents
  • Physical training
  • Visceral adiposity

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science

Cite this

Effects of exercise intensity on cardiovascular fitness, total body composition, and visceral adiposity of obese adolescents. / Gutin, Bernard; Barbeau, Paule; Owens, Scott; Lemmon, Christian; Bauman, Mara; Allison, Jerry David; Kong, Hyun Sik; Litaker, Mark S.

In: American Journal of Clinical Nutrition, Vol. 75, No. 5, 07.05.2002, p. 818-826.

Research output: Contribution to journalArticle

Gutin, Bernard ; Barbeau, Paule ; Owens, Scott ; Lemmon, Christian ; Bauman, Mara ; Allison, Jerry David ; Kong, Hyun Sik ; Litaker, Mark S. / Effects of exercise intensity on cardiovascular fitness, total body composition, and visceral adiposity of obese adolescents. In: American Journal of Clinical Nutrition. 2002 ; Vol. 75, No. 5. pp. 818-826.
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abstract = "Background: Little is known about how the intensity of exercise influences cardiovascular fitness and body composition, especially in obese adolescents. Objective: Our goal was to determine the effects of physical training intensity on the cardiovascular fitness, percentage of body fat ({\%}BF), and visceral adipose tissue (VAT) of obese adolescents. Design: Obese 13-16-y-olds (n = 80) were assigned to 1) biweekly lifestyle education (LSE), 2) LSE + moderate-intensity physical training, or 3) LSE + high-intensity physical training. The intervention lasted 8 mo. Physical training was offered 5 d/wk, and the target energy expenditure for all subjects in physical training groups was 1047 kJ (250 kcal)/session. Cardiovascular fitness was measured with a multistage treadmill test, {\%}BF with dual-energy X-ray absorptiometry, and VAT with magnetic resonance imaging. Results: The increase in cardiovascular fitness in the high-intensity physical training group, but not in the moderate-intensity group, was significantly greater than that in the LSE alone group (P = 0.009); no other comparisons of the 3 groups were significant. Compared with the LSE alone group, a group composed of subjects in both physical training groups combined who attended training sessions ≥2 d/wk showed favorable changes in cardiovascular fitness (P < 0.001), {\%}BF (P = 0.001), and VAT (P = 0.029). We found no evidence that the high-intensity physical training was more effective than the moderate-intensity physical training in enhancing body composition. Conclusions: The cardiovascular fitness of obese adolescents was significantly improved by physical training, especially high-intensity physical training. The physical training also reduced both visceral and total-body adiposity, but there was no clear effect of the intensity of physical training.",
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