Chapter 15 - Qualitative Analysis of Injury Development

Question 1

What is Wolff’s Law?

Answer 1

Tissue adapts to the level of stress imposed on it
Muscle tissue adapts to training or overload stress with increased fiber diameter leading to larger cross-sectional area

Question 2

Explain how the stress continuum relates to tissue adaptation and injury

Answer 2

Controlling the level of imposed stress is important to train various tissues and avoid injury.

Question 3

Stress threshold

Answer 3

The threshold at which the stress becomes too much for the tissue to withstand. If it is a high stress activity, the frequency of the activity needs to be low for it to remain safe. Conversely, if the activity is low-stress, the frequency of the activity can be high and still be safe

Question 4

Differentiate between intrinsic and extrinsic factors related to injury development

Answer 4

Intrinsic factors reflect an individual’s ability to withstand loading (bone density, muscle strength, flexibility, etc.)
Extrinsic factors reflect the nature of the loading on the individual (nature of the task, weather, type of surface, etc.)

Question 5

Identify intrinsic factors that predispose an individual to injury

Answer 5

If an individual has a previous history of injury, low bone density, etc. they are more likely to get injured

Question 6

Identify extrinsic factors associated with high stress during skill performance

Answer 6

High stress will affect how the task is performed, the speed & duration of the performance, etc.