Dataset Information

Longitudinal Study of Body Composition and Energy Expenditure in Overweight or Obese Young Adults.

ABSTRACT: The aim of this study was to compare the effects of an aerobic training program with a strength training program on body composition and energy expenditure in overweight or obese (29.06?±?3.49?kg/m2) young adults (21.96?±?1.90 years). Subjects (N?=?109) were randomly assigned to one of three groups: a control group (CG), an aerobic training (AT) group and a strength training (ST) group. Training took place over twelve weeks comprising three sessions per week with each session lasting 60 to 90?minutes. Before and after the program, weight, height, body mass index, lean mass percentage and fat mass percentage were evaluated. In addition, The International Physical Activity Questionnaire-Short Form (IPAQ-SF) was used to estimate energy expenditure. The results of both aerobic training and strength training produced statistically significant improvements in weight (AT-CG?=?-2.892?kg; ST-CG?=?-2.986?kg); BMI (AT-CG?=?-1.075?kg/m2; ST-CG?=?-1.118?kg/m2); total body fat (AT-CG?=?-1529.172?g; ST-CG?=?-763.815); and total body fat percentage (AT-CG?=?-1.421%; AT-ST?=?-0.855%). These two exercise prescription models were therefore useful in reducing overweight and obesity, which could have an impact on improving the health and quality of life of individuals with these characteristics.

SUBMITTER: Fernandez-Garcia JC

PROVIDER: S-EPMC7093463 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Longitudinal Study of Body Composition and Energy Expenditure in Overweight or Obese Young Adults.

Fernández-García José Carlos JC Gálvez-Fernández Ismael I Mercadé-Melé Pere P Gavala-González Juan J

Scientific reports 20200324 1

The aim of this study was to compare the effects of an aerobic training program with a strength training program on body composition and energy expenditure in overweight or obese (29.06 ± 3.49 kg/m<sup>2</sup>) young adults (21.96 ± 1.90 years). Subjects (N = 109) were randomly assigned to one of three groups: a control group (CG), an aerobic training (AT) group and a strength training (ST) group. Training took place over twelve weeks comprising three sessions per week with each session lasting ...[more]

PMID: 32210340

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Project description:The carbohydrate-insulin model of obesity posits that habitual consumption of a high-carbohydrate diet sequesters fat within adipose tissue because of hyperinsulinemia and results in adaptive suppression of energy expenditure (EE). Therefore, isocaloric exchange of dietary carbohydrate for fat is predicted to result in increased EE, increased fat oxidation, and loss of body fat. In contrast, a more conventional view that "a calorie is a calorie" predicts that isocaloric variations in dietary carbohydrate and fat will have no physiologically important effects on EE or body fat.We investigated whether an isocaloric low-carbohydrate ketogenic diet (KD) is associated with changes in EE, respiratory quotient (RQ), and body composition.Seventeen overweight or obese men were admitted to metabolic wards, where they consumed a high-carbohydrate baseline diet (BD) for 4 wk followed by 4 wk of an isocaloric KD with clamped protein. Subjects spent 2 consecutive days each week residing in metabolic chambers to measure changes in EE (EEchamber), sleeping EE (SEE), and RQ. Body composition changes were measured by dual-energy X-ray absorptiometry. Average EE during the final 2 wk of the BD and KD periods was measured by doubly labeled water (EEDLW).Subjects lost weight and body fat throughout the study corresponding to an overall negative energy balance of ?300 kcal/d. Compared with BD, the KD coincided with increased EEchamber (57 ± 13 kcal/d, P = 0.0004) and SEE (89 ± 14 kcal/d, P < 0.0001) and decreased RQ (-0.111 ± 0.003, P < 0.0001). EEDLW increased by 151 ± 63 kcal/d (P = 0.03). Body fat loss slowed during the KD and coincided with increased protein utilization and loss of fat-free mass.The isocaloric KD was not accompanied by increased body fat loss but was associated with relatively small increases in EE that were near the limits of detection with the use of state-of-the-art technology. This trial was registered at clinicaltrials.gov as NCT01967563.

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Dataset Information

Longitudinal Study of Body Composition and Energy Expenditure in Overweight or Obese Young Adults.

Publications

Longitudinal Study of Body Composition and Energy Expenditure in Overweight or Obese Young Adults.

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