Author:

• Nathalia Assis Augusto - Augusto, N. A. - <nathiassis@hotmail.com>
ORCID: https://orcid.org/0000-0002-0251-1846

Co-author(s):

• Mathias Roberto Loch - Loch, M. R. - <mathiasuel@hotmail.com>
ORCID: https://orcid.org/0000-0002-2680-4686
• Douglas Fernando Dias - Dias, D. F. - Londrina, PR - <df.dias@yahoo.com.br>
ORCID: https://orcid.org/0000-0003-0266-4209
• Ana Maria Rigo Silva - Silva, A.M.R. - <arigosilva@gmail.com>
ORCID: https://orcid.org/0000-0002-9527-4914

Abstract:

The aim was to analyze the incidence of increase and decrease in the Body Mass Index (BMI) among middle-aged men and women according to sociodemographic characteristics and classification of nutritional status. It is a population-based cohort of 689 adults aged 40 to 64 years followed up for four years. The proportion of reduction and increase in BMI (≥ 1 kg/m²) was verified according to sociodemographic variables and classification of nutritional status in the baseline by means of crude and adjusted Poisson regression. A higher incidence of reduced BMI there was among men in the 55-64 age group (RR:1.78; 95%CI:1.06-3.00), in those without a partner (RR:1.85; 95%CI:1.09-3.14), in those classified as overweight (RR:2.06; 95%CI:1.13-3.74) and obesity (RR:2.33; 95%CI:1.24-4.35), and among women in the 55-64 age group (RR:1.43; 95%CI:1.02-2.00) and in those classified as obese (RR:2.10; 95%CI%:1.30-3.38). The incidence of increased BMI was lower in the 55 to 64 age group among men (RR:0.62; 95%CI:0.41-0.95) and women (RR:0.68; 95%CI:0.49-0.95). These data are important for understanding the factors related to the variation of BMI and the elaboration of public policies aimed at the health care of middle-aged adults.

Keywords:

Middle Aged; Body Weight Changes; Obesity; Longitudinal Studies; Risk Factors

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