AUTHOR=Tonello Laís , Oliveira-Silva Iransé , Medeiros André Ricarte , Donato Arthur Ney Alves , Schuch Felipe Barreto , Donath Lars , Boullosa Daniel 

TITLE=Prediction of Depression Scores From Aerobic Fitness, Body Fatness, Physical Activity, and Vagal Indices in Non-exercising, Female Workers

JOURNAL=Frontiers in Psychiatry

VOLUME=10

YEAR=2019

URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2019.00192

DOI=10.3389/fpsyt.2019.00192

ISSN=1664-0640

ABSTRACT=<p><bold>Background:</bold> Depression is associated with a decreased cardiorespiratory fitness, and physical activity [PA] levels, higher rates of obesity, and dysfunction in autonomic control of heart rate [HR]. However, these parameters were mostly recorded with indirect methods. Thus, the aim of the current study was to investigate the relationships between depression scores and objective measures of body fatness, autonomic indices (i.e. HRV and HRR), cardiorespiratory fitness and PA levels; and subsequently to present the best predictive models of depression scores for this population, based on these variables.</p><p><bold>Methods:</bold> Thirty-five non-exercising women (26–43 years; maximal oxygen consumption [VO<sub>2</sub>max] ~ 17.4–38.3 mL/kg/min) volunteered for participation in this study. All participants responded to the Beck Depression Inventory [DBI] and were evaluated for body mass index [BMI], percentage of body fat, sum of skinfolds, and VO<sub>2</sub>max. Subsequently, over four consecutive days, an orthostatic test and a submaximal exercise on a cycle ergometer were performed to record HRV and HRR, respectively. In addition, incidental PA was recorded during 5 consecutive days using accelerometers.</p><p><bold>Results:</bold> depression scores were related to VO<sub>2</sub>max (<italic>r</italic> = −0.446, <italic>p</italic> = 0.007) and the sum of skinfolds (<italic>r</italic> = 0.434, <italic>p</italic> = 0.009). Several stepwise multiple linear regression models were performed and only VO<sub>2</sub>max was revealed as an independent predictor of the Beck scores (ß = −0.446, <italic>R</italic><sup>2</sup> = 0.199, <italic>p</italic> = 0.007).</p><p><bold>Conclusion:</bold> The present study revealed that VO<sub>2</sub>max and the sum of skinfolds were moderately related to depression scores, while VO<sub>2</sub>max was the only independent predictor of depression scores in female workers.</p>