FOUNDATIONAL TERM
relative intensity
相对强度
Activity demand relative to current individual capacity.
Study this concept in context
48 · From walking to training: planning activity that works for you
A walk can be a starting point, but learning about exercise goes beyond advice to move more. This lesson connects muscle energy use and adaptation with intensity, weekly planning, progression and a practical review of how the body responds.
44 · Understanding and improving aerobic fitness
Aerobic fitness is not captured by lung volume or heart rate alone. It involves sustained oxygen delivery and use during activity. This lesson separates immediate responses from training adaptations and develops sensible ways to assess progress.
Sources
- WHO: Physical activity
- CDC: Adult activity guidelines
- CDC: Measuring Physical Activity Intensity
- OpenStax Anatomy and Physiology 2e: Exercise and Muscle Performance
- CDC: Adding activity as an adult
- OpenStax Anatomy and Physiology 2e: Cardiac Physiology
Definitions come from the published lessons. Read the linked lesson for mechanisms, conditions and examples.