Sedentary Behavior and Physical Inactivity in the Asia-Pacific Region: Current Challenges and Emerging Concerns.

This editorial sets the scene for our Special Issue on the growing problem of sedentary behavior and physical inactivity in the Asia-Pacific region. In many societies, more than 40% of the adult population and growing numbers of children are insufficiently physically active to safeguard their health. This is contributing to high rates of cardiovascular disease, obesity, and other deleterious health outcomes across the region. The Asia-Pacific is heterogeneous and complex, with diverse social, cultural, and environmental barriers that affect intentions and opportunities for regular physical activity. Recently, the problem has been compounded by the acceleration of population aging, the worsening effects of anthropogenic climate change, and the ongoing COVID-19 pandemic. Without strong leadership, enduring funding support, and innovative interventions that cut across policy and society, we may yet be facing a century of unmitigated expansion of morbidity across the Asia-Pacific.

Existential threats to the Summer Olympic and Paralympic Games? a review of emerging environmental health risks.

This review highlights two intersecting environmental phenomena that have significantly impacted the Tokyo Summer Olympic and Paralympic Games: infectious disease outbreaks and anthropogenic climate change. Following systematic searches of five databases and the gray literature, 15 studies were identified that addressed infectious disease and climate-related health risks associated with the Summer Games and similar sports mega-events. Over two decades, infectious disease surveillance at the Summer Games has identified low-level threats from vaccine-preventable illnesses and respiratory conditions. However, the COVID-19 pandemic and expansion of vector-borne diseases represent emerging and existential challenges for cities that host mass gathering sports competitions due to the absence of effective vaccines. Ongoing threats from heat injury among athletes and spectators have also been identified at international sports events from Asia to North America due to a confluence of rising Summer temperatures, urban heat island effects and venue crowding. Projections for the Tokyo Games and beyond suggest that heat injury risks are reaching a dangerous tipping point, which will necessitate relocation or mitigation with long-format and endurance events. Without systematic change to its format or staging location, the Summer Games have the potential to drive deleterious health outcomes for athletes, spectators and host communities.