IAHC Exercise and Physical Activity 2 — Questions and Answers
Question 1: Which of the following best describes the concept of 'progressive overload' in an exercise program?
- Performing the same workout indefinitely to build a routine
- Gradually increasing the stress placed on the body to stimulate adaptation (Correct answer)
- Alternating between different exercise types each day without structure
- Reducing exercise intensity over time to prevent burnout
Correct answer: Gradually increasing the stress placed on the body to stimulate adaptation
Progressive overload involves systematically increasing exercise demands — such as load, volume, or intensity — to continually challenge the body and promote fitness gains.
Question 2: A client wants to improve her cardiovascular fitness. According to the American College of Sports Medicine (ACSM), what is the recommended target heart rate zone for moderate-intensity exercise?
- 30–40% of maximum heart rate
- 50–70% of maximum heart rate (Correct answer)
- 80–90% of maximum heart rate
- Above 95% of maximum heart rate
Correct answer: 50–70% of maximum heart rate
ACSM defines moderate-intensity aerobic exercise as activity performed at 50–70% of maximum heart rate.
Question 3: Which type of stretching involves moving a joint through its full range of motion and is often recommended as part of a warm-up?
- Static stretching
- Ballistic stretching
- Dynamic stretching (Correct answer)
- PNF stretching
Correct answer: Dynamic stretching
Dynamic stretching involves controlled movements that take the joints through their range of motion and is preferred as a warm-up because it activates muscles and increases blood flow.
Question 4: How does regular aerobic exercise primarily benefit cardiovascular health?
- It decreases resting heart rate and strengthens the heart muscle (Correct answer)
- It increases LDL cholesterol and lowers triglycerides
- It reduces blood oxygen levels during rest
- It causes the heart to pump less blood per beat
Correct answer: It decreases resting heart rate and strengthens the heart muscle
Regular aerobic exercise lowers resting heart rate and increases stroke volume, meaning the heart becomes more efficient and pumps more blood per beat.
Question 5: A client reports knee pain during jogging. As a health coach, what is the most appropriate first step?
- Instruct the client to push through the pain to build endurance
- Recommend the client see a healthcare provider before continuing high-impact exercise (Correct answer)
- Prescribe specific physical therapy exercises for the knee
- Tell the client to switch to a more intense activity like sprinting
Correct answer: Recommend the client see a healthcare provider before continuing high-impact exercise
Health coaches should recommend clients with pain symptoms consult a healthcare provider before continuing exercise, as this falls outside the health coach's scope of practice.
Question 6: Which of the following motivational strategies is most effective for helping a client sustain a long-term exercise habit?
- Focusing exclusively on weight loss as the primary outcome
- Helping the client identify intrinsic motivators tied to personal values (Correct answer)
- Setting only outcome-based goals such as running a marathon
- Using external rewards like money or prizes for every workout
Correct answer: Helping the client identify intrinsic motivators tied to personal values
Intrinsic motivation — driven by personal values, enjoyment, and meaning — is more sustainably linked to long-term behavior change than extrinsic rewards.
Question 7: What does the 'talk test' measure in the context of exercise intensity?
- A client's ability to memorize workout instructions
- The appropriateness of exercise intensity based on whether the client can hold a conversation (Correct answer)
- A coach's communication skills during a session
- The amount of time a client can talk before fatiguing
Correct answer: The appropriateness of exercise intensity based on whether the client can hold a conversation
The talk test is a simple method to gauge exercise intensity: if a person can speak in full sentences comfortably, the intensity is moderate; if they can only say a few words, it is vigorous.
IAHC Exercise and Physical Activity 2
Which of the following best describes the concept of 'progressive overload' in an exercise program?