Practice Quiz

Group Fitness Instructor

Category - Exercise Selection

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One of the fastest ways to elevate heart rate and increase oxygen consumption during exercise is to add weight to the limb being moved. Which of the following statements is the MOST accurate regarding this phenomenon? The use of 1 to 3-lb arm weights can:
  1. Increase heart rate by 5-10 beats per minute
  2. Increase oxygen consumption by 20%
  3. Increase oxygen consumption by 30%
  4. Increase carbon dioxide expulsion by 25%
Explanation
Answer: A - The use of light upper extremity weights (3lb or under) can be used by individuals seeking a more vigorous workout; studies have shown an increase in heart rate by 5-10 beats per minute and an increase in oxygen consumption of 5-15% with such weights. However, heavier weights are not typically recommended as they place undue stress on the joints of the shoulder, elbow, and wrist.
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