Association between Home Environment, Dietary Practice, and Physical Activity among Primary School Children in Selangor, Malaysia

The home environment plays an influential role in affecting dietary and physical activity practices of children. This study aimed to determine the association between the home environment, dietary practice and physical activity among primary school children in Selangor. Methods: This cross-sectional study was conducted in five primary schools selected using multistage stratified sampling. A total of 293 children (32.8% males and 67.2% females) (mean age of 11.0±0.9 years) and their parents (10.7% fathers and 89.3% mothers) completed the study. Dietary practice of the children was assessed using a two-day dietary recall. Energy expenditure and physical activity of the children were assessed using a two-day physical activity recall. Parents of the children completed the Home Environment Survey (HES). Results: The mean energy intake of the children was 1765±416 kcal/day with 75.0% not achieving the Malaysian Recommended Nutrient Intake (RNI) for energy. Almost all children (96.5%) were physically inactive, with a mean energy expenditure of 12693±42 kcal/day. High availability of fruit/vegetable at home was associated with high vegetable intake (r=0.128, p<0.05) and low fat intake (r=-0.115, p<0.05). High availability of fats/sweets at home (r=0.125, p<0.05) and parental role modelling of healthy eating (r=0.117, p<0.05) were associated with high fruit intake. High availability of physical activity equipment at home was associated with high energy expenditure (r=0.123, p<0.05). Parental role modelling of physical activity was associated with high energy expenditure (r=0.123, p<0.05) and high physical activity (r=0.123, p<0.05). Conclusion: The results indicate the important roles of parents in promoting healthy eating and active lifestyles among children.

Sex and ethnic differentials in physical activity levels of adolescents in Kuantan

A cross-sectional study was conducted to determine the physical activity levels of 400 adolescents (13 years old) in Kuantan, Pahang using the Physical Activity Questionnaire for Older Children (PAQ-C). The associations of physical activity levels with sex, ethnicity and body mass index were also determined. About one third (35.3%) of the adolescents were in the low physical activity level category, 61.5% in the moderate physical activity level and only 3.0% of the adolescents were in the high physical activity level category. More males (77.9%) were physically active than females (54.9%). Twice as many female adolescents (45.1%) were in the low physical activity level category compared to the male adolescents (22.1%). The associations between physical activity with ethnicity and body mass index were not significant. However, there was a significant interaction effect of sex and ethnicity in mean physical activity score (F = 2.36, p<0.01). Malay males had a significantly higher mean physical activity score as compared to Chinese males (t=2.13; p<0.05). Although Chinese females had a higher mean physical activity score than Malay females, the difference was not statistically significant. Conversely, there was no interaction effect of sex and BMI status in mean physical activity score. This study suggests that physical activity intervention to promote regular physical activity is needed since a high proportion of the adolescents fall within the low physical activity level category.