Physical Activity, Fitness and Health: Why Every Minute Counts
What fitness really is, how much activity health requires, how it is measured, and why sitting, steps and habits matter.
Try 3 questions
1. Which of these is a skill-related rather than a health-related component of fitness?
- Body composition
- Muscular endurance
- Reaction time
Show the answer
Answer: Reaction time
Health-related components are cardiorespiratory fitness, strength, muscular endurance, flexibility and body composition; reaction time, agility and balance are skill-related.
2. In large cohort studies, how does low cardiorespiratory fitness compare with smoking as a predictor of early death?
- Relevant only for athletes
- Comparable or even stronger
- Far weaker, almost negligible
Show the answer
Answer: Comparable or even stronger
Studies of over 100,000 people found that low fitness carried mortality risk similar to or greater than smoking, diabetes or high blood pressure.
3. Someone can lift a heavy weight once but tires quickly when repeating a lighter one. Which component is relatively weak?
- Muscular endurance
- Body composition
- Maximal strength
Show the answer
Answer: Muscular endurance
Strength is the maximal force of one effort; muscular endurance is the ability to repeat or sustain submaximal contractions.
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