Aerobic capacity
The ability to use oxygen during sustained activity, influenced by several interacting systems.
Reference
A shared vocabulary for better conversations.
Definitions are short, contextual and intentionally cautious. Use them as a starting point, not a substitute for assessment.
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Perceived effort
A personal rating of how demanding an activity feels in the moment.
Progression
A planned change in training demand that allows time for response and adjustment.
Recovery
The process of returning toward readiness after a physical or mental demand.
Mobility
Usable movement available at a joint or across a movement pattern.
Training load
A broad description of the work performed, interpreted alongside individual response.
Words help, context decides
No definition can tell a person what to do without information about goals, history, symptoms and current capacity.