BHK Trivia 4

Question 1

Which vitamin is synthesized in the skin upon exposure to ultraviolet B (UVB) radiation and is essential for calcium absorption?

Accepted Answer

Vitamin D

Answer

Vitamin D3 (cholecalciferol) is produced when UVB rays convert 7-dehydrocholesterol in the skin, and it enhances intestinal calcium absorption.

Question 2

The 'talk test' is used to estimate exercise intensity based on which physiological threshold?

Accepted Answer

First ventilatory threshold

Answer

The talk test corresponds approximately to the first ventilatory threshold, where speech becomes noticeably more difficult during exercise.

Question 3

What is the term for the gradual reduction in training load before a major competition to optimize performance?

Accepted Answer

Tapering

Answer

Tapering involves a progressive reduction in training volume while maintaining intensity to allow full physiological recovery before competition.

Question 4

Which law states that a muscle generates maximum force when at its optimal resting length?

Accepted Answer

Length-tension relationship

Answer

The length-tension relationship describes how sarcomere length affects the number of actin-myosin cross-bridges and thus maximum force production.

Question 5

The 'SAID principle' in exercise science stands for what?

Accepted Answer

Specific Adaptation to Imposed Demands

Answer

SAID (Specific Adaptation to Imposed Demands) states that the body adapts specifically to the type, intensity, and volume of training performed.

BHK - Bachelor of Kinesiology Practice Test