Dietary intake, physical activity and muscle strength among adolescents: the Malaysian Health and Adolescents Longitudinal Research Team (MyHeART) study.

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 Open

journal_title

BMJ open

authors

Ng AK,Hairi NN,Jalaludin MY,Majid HA

doi

10.1136/bmjopen-2018-026275

subject

Has Abstract

pub_date

2019-06-27 00:00:00

pages

e026275

issue

6

issn

2044-6055

pii

bmjopen-2018-026275

journal_volume

9

pub_type

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