Volume 20 No 20 (2022)
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Correlation of various sleep indices with body mass index in young adults
Dr. Naila Parveen, Dr. Muhammad Noman Rashid, Dr. Lubna Riaz, Dr. Ashhad Mazhar Siddiqui, Dr. Nasrul Huda, Dr. Riaz Ahmad Shahid, Shazia Saleem, Shanta Bai,Basit Sangah
Abstract
Objectives: This study aimed at determining the correlation of various sleep indices with body mass index in young adults. Sleep indices includes multiple sleep measures such as timing in bed, variability and sleep quality. Study design & setting: This cross-sectional study was conducted in the Department of Physiology at Liaquat National Hospital and Medical College, Karachi, from 15th January 2021 to 15th July 2021. Methodology: A total of 162 healthy medical students both genders with ages between 18-25 years were included in the study. Height and weight of each participant was measured using the standard techniques and their body mass index was calculated. Sleep indices were evaluated using the Pittsburgh Sleep Quality Index (PSQI). Participants were divided into three groups: normal weight, overweight and obese and each group were correlated with various sleep indices using multiple logistic regression analysis. Results: In this study, about 52.6% of obese students were identified with potential sleep problems with >5 PSQI scores. Participants with normal body mass index showed significant positive correlation with quality of sleep (r=0.82). However, highly significant positive association was reported among students with BMI > 25 kg/m2 and various sleep indices (sleep disturbances=0.88, use of hypnotics=0.60 and daytime dysfunction= 0.67). Conclusion: The present study revealed that students who have poor sleep quality developed increased weight gain. Sleep indices such as quality of sleep, sleep latency and number of hours slept had an inverse correlation with BMI in overweight and obese students. Life style modification and improving the quality of sleep can reduce the body mass index.
Keywords
Body mass index; Sleep; Obesity
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