Document Type : Letter to the editor


1 Department of Sport Sciences, Shahrekord University, Shahrekord, Iran

2 Department of Stem Cell and Regenerative Medicine, Institute of Medical Biotechnology, National Institute of Genetic Engineering & Biotechnology (NIGEB), Tehran, Iran

3 Centre for Health and Exercise Science Research, Department of Sport, Physical Education and Health, Hong Kong Baptist University, Kowloon Tong, Hong Kong


Physical activity is a broad term that encompasses all human motion at home, school, the workplace, and the community. As indicated in the Bangkok Declaration of the International Society for Physical Activity and Health (ISPAH), physical activity benefits both individuals and society, contributing to many of the United Nations sustainable developmental goals. Physical activity is associated with positive health outcomes in children and adolescents, whereas excessive time spent on sedentary activities is related to negative health outcomes. Concerns about diminishing levels of physical activity and their impact on health outcomes have driven various national and international regulatory bodies to create guidelines with recommendations for policymakers, practitioners, and individuals over the last three decades. Therefore, the World Health Assembly has established two goals: a 10% decrease in worldwide physical inactivity by 2025; and a 15% decrease by 2030. Due to the health advantages of regular physical activity, the World Health Organization (WHO) recommends that individuals aged 5–17 years engage in at least 60 minutes of moderate-to vigorous-intensity physical activity every day throughout the week. In addition, vigorous-intensity activities, including aerobic and activities that strengthen bones and muscles, should be performed at least three days a week.


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