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Why are low-intensity, moderate-to-vigorous, and resistance activities important?

Different types of physical activity support health in complementary ways. Low-intensity movement helps reduce sedentary time, moderate-to-vigorous activity supports cardiovascular and metabolic health, and resistance training helps maintain muscle strength and physical function.

Low-Intensity Activities

Low-intensity activities are light movements that use more energy than sitting but do not substantially increase heart rate or breathing. Examples include casual walking, light household tasks, easy gardening, yoga, and other gentle movement throughout the day.

Benefits:

  • Reduced sedentary time: Replacing sitting with light activity is associated with better health outcomes.
  • Metabolic health: Light movement can help improve post-meal glucose and insulin responses.
  • Cardiovascular health: Higher levels of light activity are associated with lower cardiovascular and all-cause mortality risk.
  • Daily movement: Light activity provides health benefits even when it does not reach moderate intensity.

WHO recommends reducing sedentary time and replacing it with physical activity of any intensity, including light-intensity activity.

Moderate-to-Vigorous Activities

Moderate-to-vigorous physical activity includes exercise that noticeably increases heart rate and breathing. Moderate activities include brisk walking, recreational cycling, and dancing, while vigorous activities include running, fast cycling, swimming laps, and high-intensity sports.

For activity scoring, 1 minute of vigorous activity counts as 2 minutes of moderate activity.

Benefits:

  • Cardiovascular health: Improves cardiorespiratory fitness and lowers cardiovascular disease risk.
  • Metabolic health: Associated with lower risk of type 2 diabetes and improved metabolic health.
  • Longevity: Higher levels are associated with lower all-cause mortality.
  • Mental health: Regular activity is associated with improvements in mood and lower risk of depression and anxiety.

WHO recommends adults complete 150โ€“300 minutes of moderate activity, 75โ€“150 minutes of vigorous activity, or an equivalent combination each week.

Resistance Training

Resistance training involves working your muscles against resistance. Examples include weightlifting, resistance bands, strength machines, and bodyweight exercises such as squats, lunges, and push-ups.

Benefits:

  • Muscle strength: Helps maintain and improve muscular strength and function.
  • Bone and musculoskeletal health: Supports bone health and helps preserve physical function with age.
  • Metabolic health: Can improve glucose regulation and body composition.
  • Healthy aging: Helps preserve muscle mass, mobility, and independence over time.

WHO recommends performing muscle-strengthening activities involving all major muscle groups on at least 2 days per week, in addition to aerobic activity.

References

  1. WHO Guidelines on Physical Activity and Sedentary Behavior
  2. U.S. Physical Activity Guidelines for Americans, 2nd Edition
  3. Ekelund et al., 2019, device-measured physical activity and mortality
  4. Garcia et al., 2023, physical activity and chronic disease/mortality outcomes
  5. Momma et al., 2022, muscle-strengthening activity and health outcomes