Heart rate variability in shift workers: responses to orthostatism and relationships with anthropometry, body composition, and blood pressure.
In order to investigate the response of heart rate variability (HRV) components to postural change and their association with cardiovascular risk factors in shift workers, a cross-sectional study with 438 Brazilian males rotating shift workers was done. Anthropometric, body composition, and clinical measures were collected. Electrocardiogram was recorded for 3 minutes, in the supine and orthostatic position, and HRV components were extracted. Descriptive analyses showed that mean values of body mass index, waist circumference (WC), waist-to-height ratio, visceral fat area (VFA), and blood pressure (BP) were higher than the reference values. In the regression model, age, WC, VFA, and systolic BP showed negative association with HRV components. These findings suggest the need for determining effective strategies for the evaluation and promotion of health among shift workers focused on the altered variables.
School of Nutrition, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Nayara Mussi
NM
Monteze
School of Medicine, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Breno Bernardes
BB
Souza
Department of Statistics, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Henrique José de Paula
HJ
Alves
Department of Statistics, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Fernando Luiz Pereira
FL
de Oliveira
Institute of Psychiatry, Federal University of Rio de Janeiro, 22290-140 Rio de Janeiro, RJ, Brazil.
José Magalhães
JM
de Oliveira
School of Nutrition, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Silvia Nascimento
SN
de Freitas
School of Medicine, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Raimundo Marques
RM
do Nascimento Neto
Institute of Cancer of São Paulo, 01255-000 São Paulo, SP, Brazil.
Maria Lilian
ML
Sales
Department of Biological Sciences, Federal University of Ouro Preto, 35400-000 Ouro Preto, MG, Brazil.
Gabriela Guerra Leal
GG
Souza
D000328:Adult; D000886:Anthropometry / Q000379:methods; D001794:Blood Pressure / Q000502:physiology*; D001823:Body Composition / Q000502:physiology*; D001938:Brazil / Q000453:epidemiology; D003198:Computer Simulation; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D015233:Models, Statistical; D004856:Postural Balance / Q000502:physiology; D011187:Posture / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014940:Work Schedule Tolerance / Q000502:physiology*