Effect Of Sleep Quality On Different Obesity Indices In College Students

Purposes: Obesity affects the physical health of college students and is a predisposing factor for various chronic diseases.At present,the research on prevention of obesity mainly focuses on physical activity and eating behavior.However,epidemiological studies have shown that sleep quality is considered an adjustable risk factor for obesity.At the same time,it is found that gender may be the regulatory variable between sleep quality and obesity.On this basis,we try to explore whether the physical activity related to obesity and depression and anxiety factors also have regulatory effects.Therefore,this paper takes the decline of college students' sleep quality as the starting point,and explores the influence of gender,physical activity,depression and anxiety on the sleep quality of college students and different obesity indicators.Methods: This study recruited 481 college students(257 boys and 224 girls)as subjects.The bioelectrical impedance meter(Inbody230.Korea)was used to collect data such as BMI,body fat percentage and waist-to-hip ratio.The sleep quality was assessed by the Pittsburgh Sleep Quality Index(PSQI)questionnaire;the International Sports Activity Questionnaire(IPAQ)was used.The volume determines the level of physical activity of college students;the mental state is assessed using the Self-rating Depression Scale(SDS)and the Self-rating Anxiety Scale(SAS).The independent sample t test was used to compare the sleep characteristics,physical activity,obesity,depression and anxiety of college students between different genders.Principal component analysis was used to extract the main components of sleep quality.Linear regression model was used to analyze sleep quality,gender,physical activity,Depression anxiety and the interaction of their respective variables on different obesity indicators.Results:(1)Poor sleep quality,short sleep duration,and higher scores of day dysfunction all significantly increased the body mass index,body fat percentage,and waist circumference of college students(P< 0.05).(2)The worse the quality of sleep,the higher the daytime dysfunction and the higher the score of sleep disorders,the higher the central obesity index such as waist circumference and waist to hip ratio(P<0.05).(3)The interaction between physical activity and sleep quality of college students has significant statistical significance on body fat percentage(P=0.005).The interaction between physical activity and sleep time also had significant statistical significance on body mass index(P=0.044);Subsequent simple effect analysis showed that the poor sleep quality and short sleep time of college students with moderate and low intensity physical activity levels could significantly increase the body fat percentage,body mass index and other general obesity indicators.However,there was no significant statistical significance of sleep quality,sleep time to body fat percentage and body mass index(P>0.05).(4)College students 'anxiety and sleep quality have significant interactions with waist circumference(F=4.532,P =0.028)and body fat percentage(F=9.835,P = 0.016),Depression and daytime dysfunction have significant interactions with body fat percentages(F=11.563,P =0.041).Subsequent simple effect analysis showed that universities with depression and anxiety symptoms significantly increased the impact of sleep quality or daytime dysfunction on obesity(P<0.05).(5)College students 'gender,anxiety,and physical activity have significant interactions with body mass index and waist circumference(F=6.575,P=0.001,F=15.792,P<0.001).Subsequent simple effect analysis showed that when male college students with anxiety symptoms engaged in moderate intensity physical activity,the body mass index and waist circumference were significantly lower than those of low and high intensity physical activity(P<0.05).Male college students with no anxiety symptoms performed low-intensity physical activity,the body mass index and waist circumference were significantly lower than those of middle and high-intensity physical activity(P<0.05).The body mass index and waist circumference of female college students with or without anxiety symptoms are significantly lower than those of low and moderate physical activity(P<0.05);Depression,physical activity,and sleep quality had significant interactions with body fat percentages(F=2.433,P=0.005).Subsequent simple effect analysis showed that when college students with no depressive symptoms and good sleep quality performed low-intensity physical activity,the percentage of body fat was significantly lower than that of college students with medium and high-intensity physical activity(P<0.05).College students with poor sleep quality without depressive symptoms had a significantly lower percentage of body fat than college students with low and high physical activity(P<0.05).The percentage of body fat in college students with depressive symptoms is significantly lower than that of college students with low and moderate physical activity regardless of the quality of sleep or poor physical activity(P<0.05).Conclusions:(1)Poor sleep quality,reduced sleep time,and increased daytime dysfunction scores can lead to obesity in college students.In particular,the increase in the score of daytime dysfunction has the greatest impact on obesity.And gender is the regulatory variable for the impact of college students 'sleep quality,daytime dysfunction,and sleep disorders on Central obesity;The worse the quality of sleep,the higher the score of day dysfunction and sleep disturbance,the greater the central obesity index.(2)Among college students,the level of high-intensity physical activity can reduce or offset the impact of poor sleep quality,short sleep time,and higher score of daytime dysfunction on the increase of general obesity indicators.(3)The absence of anxiety can reduce the effect of poor sleep quality on the percentage increase in body fat.Non-depressive symptoms can offset the effect of higher daytime dysfunction score on the increase in body fat percentage.(4)Male college students with psychological symptoms should perform moderately intensive physical activities.Female college students should perform high-intensity physical activities to effectively reduce the incidence of obesity;For college students without depressive symptoms,college students with good sleep quality perform low-intensity physical activity and poor sleep quality perform medium-intensity physical activity to effectively reduce body fat percentage.The high level of physical activity can reduce the physical percentage of college students with depressive symptoms regardless of their good or poor sleep quality.