Questions: How does activity levels affect flexibility? Low levels of activity allow the body to reduce tendon and muscle length. High levels of activity increase muscle mass, and therefore pull on the tendon and bone, reducing flexibility. Low levels of activity allows the tendons to relax and lengthen, allowing greater flexibility. High levels of activity increases blood flow to the tendons, pulling them tighter. A modified sit and reach involves a tape measure starting at: 10 inches, with the measuring tape extending away from the body until it becomes zero.

The ability of a muscle to lengthen under resistance is known as "eccentric contraction." This is when a muscle elongates while under tension, often occurring when lowering a weight or controlling movement against gravity.

Question 2: How does activity levels affect flexibility?

• Low levels of activity allow the body to reduce tendon and muscle length.

  • This statement is incorrect. Low activity levels typically lead to decreased flexibility because muscles and tendons can become tighter and less elastic without regular stretching or movement.

• High levels of activity increase muscle mass, and therefore pull on the tendon and bone, reducing flexibility.

  • This statement is partially correct. While increased muscle mass can sometimes lead to reduced flexibility if not balanced with stretching, it is not solely responsible for reduced flexibility. Flexibility can be maintained or even improved with proper stretching routines.

• Low levels of activity allows the tendons to relax and lengthen, allowing greater flexibility.

  • This statement is incorrect. Low activity levels generally do not lead to increased flexibility. Instead, they can cause muscles and tendons to become less flexible over time.

• High levels of activity increases blood flow to the tendons, pulling them tighter.

  • This statement is incorrect. While high activity levels do increase blood flow, they do not necessarily pull tendons tighter. Regular activity, especially when combined with stretching, can help maintain or improve flexibility.

The answer is: None of the options accurately describe how activity levels affect flexibility. Regular activity combined with stretching is generally beneficial for maintaining or improving flexibility.

Question 3: A modified sit and reach involves a tape measure starting at:

• 10 inches, with the measuring tape extending away from the body until it becomes zero.
  • This statement is incorrect. In a modified sit and reach test, the tape measure typically starts at zero at the point where the feet are placed, and the measurement is taken as the person reaches forward. The starting point is not typically set at 10 inches.

In summary, the ability of a muscle to lengthen under resistance is related to eccentric contraction, and flexibility is best maintained through regular activity and stretching. The modified sit and reach test does not start at 10 inches.