human 131 Humans 106 male 88 female 86 adult 64 Female 61 Male 59 Article 56 controlled study 49 article 42 major clinical study 42 aged 35 Adult 34 middle aged 32 physical activity 30 Physics 29 Research & information: general 29 cross-sectional study 28 questionnaire 28 Middle Aged 27 History of engineering and technology 25 Malaysia 25 Child 24 child 24 psychology 24 Aged 23 Technology: general issues 23 Exercise 22 Physical activity 22 prevalence 22