Which of the following techniques for measuring body composition relies on sending a low level electrical current through the body?

• A. Dual energy X-ray absorptiometry.
• B. Air displacement pod.
• C. Skinfold test.
• D. Bioelectrical impedance.

Answer: (D)

Verified step by step guidance

1. Understand the question: The problem is asking which technique for measuring body composition uses a low-level electrical current to assess body composition.
2. Review the options provided: Dual energy X-ray absorptiometry, Air displacement pod, Skinfold test, and Bioelectrical impedance.
3. Recall the principle behind each method: Dual energy X-ray absorptiometry uses X-rays to measure bone density and body composition. Air displacement pod measures body volume and density using air displacement. Skinfold test estimates body fat by measuring skinfold thickness. Bioelectrical impedance sends a low-level electrical current through the body to estimate body composition based on resistance to the current.
4. Identify the correct technique: Based on the principle of each method, the technique that uses a low-level electrical current is Bioelectrical impedance.
5. Conclude: The correct answer is Bioelectrical impedance, as it specifically relies on the electrical current to measure body composition.