|Year : 2018 | Volume
| Issue : 5 | Page : 426-432
Leisure time physical activity and risk of developing depression among the youth of Kangra district, Himachal Pradesh, India
Mitasha Singh, Piyush Sharma, Des Raj, Shailja Sharma, Ankush Kaushal, Sunil Kumar Raina
Department of Community Medicine, Dr. RP Govt. Medical College, Tanda, Kangra, Himachal Pradesh, India
|Date of Web Publication||10-Sep-2018|
Dr. Sunil Kumar Raina
Department of Community Medicine, Dr. RP Govt. Medical College, Tanda, Kangra, Himachal Pradesh
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Background: Physical inactivity during adolescence and youth has been considered as potential risk factor for future mental health problems. The present study was conducted with the aim to examine whether an association exists between leisure-time physical activity (PA) and depression among the youth of Kangra district, studying in professional or degree colleges. Methodology: A cross-sectional study was conducted among the students of Medical College (MC), Central University (CU) and Industrial Training Institute (ITI) of Kangra district. 370 adolescents and youth of age <25 years, who consented to participate, were recruited. The sample size was divided into three parts among all the three institutes. Only one question regarding leisure time PA (LTPA) was asked, as to how many hours spent in the last week; and Center for Epidemiologic Studies Depression Scale for Children (CES-DC) was used. Results: There were 124 participants from ITI, 126 from CU and 120 from MC. The mean score of CES-DC was highest among CU students 22.7 (±11.0) and lowest among MC students; 13.6 (±9.2). Low LTPA (<4 h) was significantly associated with higher depressive symptoms among all students (odds ratio [95% confidence interval]; 3.34 [1.41–7.92]). Conclusion: LTPA was associated with lower rates of depression.
Keywords: Depression, physical activity, young adult
|How to cite this article:|
Singh M, Sharma P, Raj D, Sharma S, Kaushal A, Raina SK. Leisure time physical activity and risk of developing depression among the youth of Kangra district, Himachal Pradesh, India. Indian J Psychol Med 2018;40:426-32
|How to cite this URL:|
Singh M, Sharma P, Raj D, Sharma S, Kaushal A, Raina SK. Leisure time physical activity and risk of developing depression among the youth of Kangra district, Himachal Pradesh, India. Indian J Psychol Med [serial online] 2018 [cited 2019 Jun 18];40:426-32. Available from: http://www.ijpm.info/text.asp?2018/40/5/426/240933
| Introduction|| |
Depression, according to WHO, is a common illness worldwide, with an estimated 350 million people affected. The burden of depression and other mental health conditions is on the rise globally. The World Mental Health Survey conducted in 17 countries found that on average about 1 in 20 people reported having an episode of depression in 2011.
The onset of depressive disorders occurs at a young age hence reducing people's functioning. This is one of the reasons that depression is the leading cause of disability worldwide regarding total years lost due to disability.
It has been demonstrated that along with socioeconomic status (SES), gender, body mass index (BMI), smoking, alcohol, and psychological health, a reduced level of physical activity (PA) during adolescence and youth is also among the most important potential risk factors for the future mental health problems.,,
It has generally been accepted that regular exercise confers medical health benefits on participants through increased cortical blood flow, endorphins, and epinephrine. Some cross-sectional studies in the field show that a higher level of PA is associated with a lower level of depressive symptoms.,,, Some prospective studies show a weak association between a higher level of PA during adolescence and lower risk of future depression/symptoms of depression, but others do not. There is no consensus among the studies as to whether levels of PA may act as a preventive factor in the development of the future depression. In a developing country like India, the statistics on depression are still underestimating the true burden due to poor healthcare seeking behavior, less faith on primary healthcare and more on traditional healers, and the social stigma attached. There is a paucity of literature from the northern states of India on mental health or PA among youth. Hence, this study was designed to examine whether an association exists between leisure-time PA and poor mental health among the youth of Kangra district studying in professional or degree colleges.
District Kangra of Himachal Pradesh is situated in foothills of the Western Himalayas. The population of the district according to census 2011 was 1,507,223. Around 20% of the population comprises of young people in the of age group 15–24 years. In the district, there are 22 government colleges, two universities, six professional training institutions, and two postsecondary schools.
| Methodology|| |
A cross-sectional study was conducted over a period of 3 months in three major institutes in the vicinity of the town of Kangra, in Himachal Pradesh. We selected one university, one professional training institution, and one post higher secondary school with vocational courses according to our convenience. A Government Medical College (MC), the Central University (CU) and an Industrial Training Institute (ITI) were selected.
To assess the mental health, we used Center for Epidemiologic Studies Depression Scale for Children (CES-DC), which is a depression scale designed in 1980 and is also used to measure current levels of depressive symptoms in a general population (CES-D). The tool, although initially used for research purposes, is also used as a screening tool to identify persons at risk for clinical depression. The scale has been translated into several languages and validated for both young people and adults., Higher CES-DC scores indicate increasing levels of depression. The cutoff score of 15 as being suggestive of depressive symptoms has been used in the current study.
PA has been defined as “any bodily movement produced by skeletal muscle and resulting in energy expenditure.” Leisure time PA (LTPA) is defined as “PA performed during exercise, recreation, or any time other than those associated with one's regular occupation, housework, or transportation.”,
Only one question regarding LTPA was asked. The variable LTPA had six possible answers, where each participant is asked in a single item, “How many hours a week do you usually exercise or play sports where you become breathless or have to sweat?” The answer categories of LTPA were, respectively: None, ½, 1, 2–3, 4–6, and 7 h or more. The selected cutoff values were based on studies by Holstein et al., McKercher et al., and The Danish Health and Medicines Authority's Health Profile.,, The questionnaire used included CES-DS, to which we added questions regarding LTPA and demographic details. To validate the questionnaire, we conducted a prepiloting session with 25 individuals (18–25 year age group). During the session, all difficulties and shortcomings were noted by each of the authors and amendments were done with a unanimous decision of the authors. This was followed by a pilot study conducted on 50 individuals (18–25 year of age) taking an equal number of subjects from each institution.
A sample size of 359 was calculated considering the prevalence of poor mental health (as shown in previous studies) to be 37.3%, at 95% confidence interval with a design effect of 1 using Epi Info v7. However, to account for nonresponse, 390 students were approached. All students who had acquired formal education up to 12th standard and were <25 years of age were included in the study. Those with a diagnosed mental health problem or with chronic morbidity were excluded. Twenty of the 390 students approached were not included as seven did not give their consent to participate and 13 did not satisfy all the inclusion criteria. Hence, the study was finally conducted on 370 students. The entire sample of 370 students was then divided into three parts; hence, the participants included were 124 from ITI, 126 from CU, and 120 from MC. In all the colleges, the total number of participants was equally divided among all the classes, i.e., from first to final year. The first roll number in each class was picked using the last digit on a currency note, and then, we picked the next student by adding the digit three to that number and so on till the required sample size was attained. The data collection was conducted from March to May 2016. Ethical approval was sought from Institute's Ethical Committee. Data were collected by the investigators after narrating the purpose of the study and taking prior consent.
Weight and height were measured using standard procedures. Weight was measured using a standardized portable scale. The individuals removed their shoes and heavy clothing while weighing. Height was measured using a stature meter. To record the height, the subjects stood with their scapula, buttocks and heels resting against a wall, the neck was held in a natural not stretched position, the heels were touching each other, the toe tips formed a 45° angle and the head was held straight such that Frankfurt plane was horizontal.
BMI was determined using the Quetlet's equation (ratio of weight in kilograms and square of height in meters). The cutoff values for defining obesity are in accordance with the guidelines given by the WHO, and these were further compared with the values calculated according to the consensus statement for Indians (i.e., 18–22.9 kg/m2 normal, 23–24.9 kg/m2 overweight, >25 kg/m2 obese) for comparison.
Data presented as means and proportions were tested using Chi-square test, Fischer exact test, and ANOVA for mean using Epi Info 7 (CDC, Clifton Rd, Atlanta, GA, USA). Multiple regression analysis was applied, taking outcome variable as positive screen for depression and exposure variable as leisure-time PA, and the potential confounders were sex, native area of residence, type of institution, and BMI. P < 0.05 was considered statistically significant.
| Results|| |
The sociodemographic profile of the students at the three institutes shows that 99.2% of the participants from the ITI were male, whereas the proportion of males in the samples from CU and MC were 62.7% and 42%, respectively [Table 1]. Majority of the students from ITI (100%) and CU (77%) were from rural areas, and 65% of students in the MC had an urban native background. The anthropometry of the participants showed that 8.9% of ITI students were overweight, while 25.6% of CU students and 25.8% of MC students were obese. LTPA in the week before the interview was reported to be high (≥4 h) in 18.3% MC students, 10.3% CU students, and 4% of ITI students.
Higher CES-DC scores indicate increasing levels of depression. The cutoff score of 15 was used as suggestive of depressive symptoms. The mean CES-DC score was highest among CU students 22.7 (±11.0) and lowest among MC students 13.6 (±9.2). The difference in the mean scores across the three groups was found to be statistically significant (P < 0.001). Using this cutoff for the depression screen, it was observed that 83.9% of ITI, 77% of CU, and 31.7% of MC students were positive (had depressive symptoms) and the difference in proportion was statistically significant across the three groups (P < 0.001) [Table 1].
Overall low level of LTPA was reported by around 98% of females as compared to 84% males. Among males, a high proportion of low-level LTPA performing subjects screened positive for depression. Multiple logistic regression analysis showed that the odds of depression were three times higher in low-level LTPA group as compared to the high-level LTPA group (odds ratio [OR] [95% confidence interval [CI]; 3.34 [1.41–7.92]). Male sex, rural native background, underweight, and overweight were observed to be positively associated with risk of depression. Around 1.5 times higher risk of having a positive screen for depression was observed among ITI (OR [95% CI]; 1.47 [0.52–4.12]) and seven times higher in CU (OR [95% CI); 6.93 [3.47–13.85]) students as compared to MC students [Table 2].
|Table 2: Multiple logistic regression analysis showing association of leisure time physical activity with positive depression screen among all the study participants|
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| Discussion|| |
The current community-based analysis on young people attending three different institutions used CES-DC scale to screen for depression and revealed an overall 64.6% positive screen for depression. According to the WHO, at least 20% of young people are likely to experience some form of mental illness such as depression, mood disturbances, substance abuse, suicidal behaviors, eating disorders, and others. Global burden of disease study says that in India, 30% of the mental, neurological and substance abuse disorders are attributable to depressive disorder. Youth is a critical phase of life, with major physical, physiological, psychological and behavioral changes. These changes are also accompanied by significant stress on young people, which influence and affect their relationship with their peers and adults. In the current study, a major proportion of depression was reported from the students of ITI. Least was among medical graduate students. Type of education plays an important part. Probable reason could be that professional courses such as medicine are likely to provide more security and job satisfaction than vocational courses or nonprofessional degree.
Around 40% of all participants reported no LTPA in last week, and high level (>4 h) was reported by 10% only. Globally, around 31% of adults aged 15 and over were insufficiently active in 2008. It is recommended that adults aged 18–64 should do at least 150 min of moderate-intensity aerobic PA or do at least 75 min of vigorous-intensity aerobic PA throughout the week or an equivalent combination of moderate and vigorous-intensity activity. The current study, however, did not measure the intensity of PA. The emerging public health issue of physical inactivity is mainly due to easy life due to access to technology and economic incentives which tend to discourage activity. The energy released during activity of daily living has been reduced over time due to the boon of technology. Majority of highly paid jobs are sedentary as compared to active work.
Further stratification shows that inactivity was highest among students of ITI and less among medical graduates and CU students. One of the reasons in this scenario is awareness about PA, which tends to be higher among medical graduates and university students, who also get an opportunity for co-curricular activities on campus.
Positive screen for depression was higher among low LTPA performing students across all the institutes. A significant positive association was observed between low LTPA and depression, and after adjustment, the association persisted and strengthened. This suggests that relation of LTPA to depression is complex. It derives from a variety of other characteristics of an individual or his circumstances, yet it is not wholly attributable to the influence of any of these covariates or even the combination of all of them together. Bremnes et al. examined the association between PA and depressive symptoms in adolescents. They found cross-sectional evidence that PA was inversely associated with depressive symptoms.
Male gender and rural area of residence were strong predictors in this study. The gender difference in our study population with regard to being physically active has been supported by previous studies, which have reported that boys (15.6%) are more physically active than girls (1.6%),,,,, but that the girls more often report their mental health to be poor is not found in our analysis.,,,, This divergent finding in our study could be due to a high proportion of male participants as very few female students attend ITI, different ages of the studies' populations, different cutoff values for levels of PA and different contexts. Majority of the participants belonged to a rural area. Hence, those with the risk of depression was also high for rural area.
Being overweight was also positively associated with a positive screen for depression. Increased sedentary behavior contributes to worsening depression and obesity, as well as directly links these two conditions. Vice versa, depression may cause increased sedentary activity secondary to depressed mood, fatigue, and decreased motivation. The combination of decreased PA and/or increased appetite can lead to unhealthy weight gain. Obesity in the current analysis was, however, negatively associated with depression. The obese youth may have a tendency of giving socially desirable answers which could be one of the reasons for this contradictory finding. Among the obese, none of the medical graduate students screened positive for depression, hinting that single variable does not predict depression and that it is a complex phenomenon. Underweight was also positively associated with risk of depression, indicating toward body dissatisfaction which is a reliable predictor of depression.
The association between PA and depression may be bidirectional: Depression may lead to decreased levels of exercise due to low motivation and energy and decreased exercise may be a risk factor for depression. A recent review of the literature showed that regular physical exercise significantly decreased the risk for developing depression in adult populations.
Cross-sectional analyses have given evidence in favor of higher LTPA and low risk of depression among young adults. The causality has been proven by some population-based longitudinal studies,,, but was absent in other studies.,,,, De Moor et al., in their population-based analysis, hypothesized that one-third factor, that is, personality, influences PA behavior which has a direct causal effect on depression and anxiety. In addition, SES affects the biology of the above three variables simultaneously. As per a review published by Mayo Clinic, regular exercise probably helps ease depression in a number of ways, which may include releasing feel-good brain chemicals (neurotransmitters, endorphins, and endocannabinoids) that may ease depression, reducing immune system chemicals that can worsen depression, and increasing body temperature, which may have calming effects.
A onetime analysis does not give us evidence on causality, dose-response relationship, or the temporal association. In addition, the indicator of depression was based on self-reported symptoms, which may have reflected a variety of heterogeneous mood states. This only screens for depression and does not differentiate among subjects experiencing mild-to-severe dysphoric mood and those suffering from diagnosable episodes of clinical depression. This could also be the reason for the higher prevalence of depression in the current study. The intensity and frequency of PA have not been accounted for in the current analysis. In addition, measurement error could have occurred in the self-report measure of LTPA because of potential over-reporting of PA. This cohort will be followed up again for 1–3 years (depending on the batch/semester of the students enrolled) with these variables of PA and depression to establish causation.
Community-based studies are needed to generate baseline data using standard criteria for depression and anxiety and their predictors. The Mental Health Programme in India, through its school mental health services and college counseling services as a platform, can be used to incorporate moderate and vigorous forms of aerobic PA in the curriculum. In addition, motivation from teachers and counselors are an important part.
| Conclusion|| |
Leisure Time Physical Activity was found to be associated with lower rates of depression.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Table 1], [Table 2]