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ADIPOSITY INDICATORS AS CRITERIA FOR POLYSOMNOGRAPHY IN SHIFT WORKERS
To verify the discriminatory power of adiposity indicators in the prediction of obstructive sleep apnoea (OSA) in shift workers.
The main objective of the study is to correlate the body composition of shift workers with sleep disorders.
A cross-sectional study was performed in 118 male shift workers from an iron ore extraction company, who presented with at least one overall risk factor for cardiovascular disease. Anthropometric data were collected, and polysomnography (PSG) was performed.
The frequency of OSA in the sample was 84.7%. The adiposity indicators used to predict OSA (≥ 5 events/hour) with a sensitivity of more than 70% were the body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and total body fat (TBF). Visceral fat (VF), neck circumference (NC), and neck-to-height ratio (NHtR) showed specificity values of more than 70% and thus were the most effective in correctly identifying workers without OSA. The areas under the receiver operating characteristic (ROC) curves for WC and NHtR were greater than 0.7, which indicated the effectiveness of the test for the discrimination of individuals with OSA.
The use of abdomen and neck adiposity indicators as a screening method for PSG is effective since alterations in these indicators demonstrate a significant relationship with the presence of OSA. WC and NHtR are considered good tools for OSA prediction.
SHIFT WORKERS, POLYSOMNOGRAPHY, ADIPOSITY INDICATORS
RAIMUNDO MARQUES NASCIMENTO