Effects of age, sex and treatment on weight loss dynamics in obese people

Authors

  • Miguel Angel Rojo-Tirado
  • Pedro José Benito
  • Francisco Javier Calderón

Abstract

Objective: Evaluation of how sex, age and the kind of followed treatment affect weight loss and to explain weight loss dynamics in obese men and women. Material and Methods: A hundred and twenty obese participants (18 – 50 years; Body Mass Index (BMI) >30 and <34.9 kg/m2) were randomly assigned to four treatments, namely, strength training (S; n = 30), endurance training (E; n = 30), a combination of S and E (SE; n = 30), and diet and physical recommendations group (C; n = 30). Each of the different training groups exercised three times per week during twenty-four weeks while having diet restrictions. Then, body weight changes were evaluated every fifteen days for each participant. Several equation models were developed and evaluated to determine the function that better represents weight loss dynamics. Results: There were no significant differences from the statistical viewpoint, in terms of global body weight change, either on the carried out treatment or on individual’s age. However, significant differences on the weight loss tendency were found due to the participant sex. Discussion: The effectiveness of different treatments for weight loss varies by sex and, based on our experimental observations, the most accurate model to capture the weight loss dynamics can be obtained through a quadratic function.

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References

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Published

2016-12-21

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European Journal of Human Movement

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