Glossary

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Eccentric Action
A muscle contraction that occurs while a muscle is lengthening. If a muscle were totally relaxed without eccentric contractions, the affected body part would drop like a rock.

Electrolytes are minerals that help regulate fluid balance, nerve conduction and muscle contraction.

End Feel
The perception and sensation of a joint at the limit of its range of motion.

Ergonomics
An applied science of mulitiple disciplines that involves usage, design, engineering, psychology, physiology and the arranging and organizing objects people use and the environments and situations they experience so that the interface and performance with an object or environment is optimally efficient and safe. Particular attention is placed upon observing how humans perform with or use an object or environment, and how the human use or response to the environment produces errors or cause fatigue, injury or illness. Ergonomics is also known as Human Factors.

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