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4.2 Motor System Disorders
Unit D
Module 9 ~ Lesson 4
Muscle Injury
The most common muscle complication most people experience is a muscle strain. Muscle size can decrease or
atrophy over time if they are not used due to injury, illness, or other complications. When those same fibres are stimulated repetitively, such as in weight training or cardiovascular activity, the muscle will increase in size.
Common muscle injuries include sprains, strains, cramps, and tendonitis. A muscle strain is the stretching or tearing of muscle fibres. A muscle strain can be caused by sports, exercise, a sudden movement, or trying to lift something that is too heavy. Symptoms of a muscle strain include pain, tightness, swelling, tenderness, and an inability to move the muscle very well.
Common muscle injuries include sprains, strains, cramps, and tendonitis. A muscle strain is the stretching or tearing of muscle fibres. A muscle strain can be caused by sports, exercise, a sudden movement, or trying to lift something that is too heavy. Symptoms of a muscle strain include pain, tightness, swelling, tenderness, and an inability to move the muscle very well.
