Effect of weekly physical activity frequency on weight loss in healthy overweight and obese women attending a weight loss program: a randomized controlled trial

Autor: Moira A. Taylor, Alireza Delavari, Reza Malekzadeh, Ameneh Madjd, Leila Shafiei Neek, Hamid R Farshchi, Ian A. Macdonald
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Adult
Blood Glucose
medicine.medical_specialty
Adolescent
Medicine (miscellaneous)
physical activity pattern
obesity
weight loss diet
waist circumference
cardiometabolic disease risk
Overweight
Body Mass Index
law.invention
Young Adult
03 medical and health sciences
0302 clinical medicine
Randomized controlled trial
law
Weight loss
Internal medicine
Weight Loss
medicine
Humans
Insulin
Single-Blind Method
Obesity
030212 general & internal medicine
Exercise
Triglycerides
Sedentary lifestyle
Metabolic Syndrome
Nutrition and Dietetics
medicine.diagnostic_test
business.industry
Cholesterol
HDL
Cholesterol
LDL
030229 sport sciences
Anthropometry
medicine.disease
Weight Reduction Programs
Cardiovascular Diseases
Linear Models
Physical therapy
Female
Sedentary Behavior
Waist Circumference
medicine.symptom
Lipid profile
business
Body mass index
ISSN: 2014-0215
0002-9165
1938-3207
Popis: Background: The effect of intensity and duration of physical activity (PA) on weight loss has been well described. However, the effect of the frequency of weekly PA on weight loss is still unknown. Objective: The purpose of this study was to evaluate the effect of the frequency of weekly PA sessions while maintaining the same total activity time on weight loss during a 24-wk weight loss program. Design: Overweight and obese women [n = 75; body mass index(BMI; in kg/m2): 27–37; age: 18–40 y] who had a normally sedentary lifestyle were randomly allocated to 1 of 2 intervention groups: a high-frequency physical activity (HF) or a low-frequency physical activity (LF) group. The HF group included 50 min/d PA, 6 d/wk (300 min/wk). The LF group included 100 min/d PA, 3 d/wk (300 min/wk). Both groups were advised to follow the same dietary weight loss program. Results: Both groups showed a significant decrease in anthropometric measurements and significant improvements in cardiometabolic disease risk characteristics over the 24 wk of the study. Compared with the HF group, the LF group had a greater decrease in weight (mean 6 SD; LF: 9.58 6 3.77 kg; HF: 7.78 6 2.68 kg; P = 0.028), BMI (LF: 3.62 6 1.56; HF: 2.97 6 1.02; P = 0.029) and waist circumference (LF: 9.36 6 4.02 cm; HF: 7.86 6 2.41 cm; P = 0.031). However, there were no significant differences in carbohydrate metabolism characteristics or lipid profile after the 24 wk of intervention. Conclusion: Weekly PA undertaken over fewer sessions of longer duration during the week could be more effective for weight loss than when undertaken as more frequent shorter sessions in overweight and obese women on a weight loss program. This may be helpful for those who are neither willing nor able to schedule time for PA almost every day to achieve weight loss. This trial was registered at www.irct.ir as IRCT201402157754N4.
Databáze: OpenAIRE
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