Abstract:
OBJECTIVE:To examine the role of dietary intake and physical activity in muscle strength among adolescents. DESIGN:Cross-sectional analysis. SETTING:The Malaysian Health and Adolescents Longitudinal Research Team (MyHeART) study. PARTICIPANTS:Fifteen-year-old secondary school children who have given consent and who participated in the MyHeART study in 2014. PRIMARY OUTCOME MEASURE:Muscle strength was measured in relation to dietary intake (energy and macronutrients) and physical activity by using a hand grip dynamometer. RESULTS:Among the 1012 participants (395 male; 617 female), the hand grip strength of the males was higher than that of the females (27.08 kg vs 18.63 kg; p<0.001). Also, males were more active (2.43vs2.12; p<0.001) and consumed a higher amount of energy (2047 kcal vs 1738 kcal; p<0.001), carbohydrate (280.71 g vs 229.31 g; p<0.001) and protein (1.46 g/kg body weight (BW) vs 1.35 g/kg BW; p<0.168). After controlling for ethnicity, place of residency and body mass index, there was a positive relationship between hand grip strength and the intake of energy (r=0.14; p=0.006), carbohydrate (r=0.153; p=0.002) and fat (r=0.124; p=0.014) and the physical activity score (r=0.170; p=0.001) and a negative relationship between hand grip strength and the intake of protein (r=-0.134; p=0.008), for males. However, this was not observed among females. CONCLUSIONS:Energy, carbohydrate and fat intakes and physical activity score were positively correlated with hand grip strength while protein intake was negatively correlated with hand grip strength in males but not in females.
journal_name
BMJ Openjournal_title
BMJ openauthors
Ng AK,Hairi NN,Jalaludin MY,Majid HAdoi
10.1136/bmjopen-2018-026275subject
Has Abstractpub_date
2019-06-27 00:00:00pages
e026275issue
6issn
2044-6055pii
bmjopen-2018-026275journal_volume
9pub_type
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