What is Extension?
Straightening a joint to increase its angle.
In context
Extension is a key concept in biomechanics. Straightening a joint to increase its angle. Knowing what it means — and how it connects to the rest of your training — turns it from jargon into something you can actually use in the gym.
Nishaana is built around ideas like this: it tracks the numbers behind them automatically, so the theory shows up as real progress in your logbook rather than staying abstract.
Related biomechanics terms
Common questions.
What does extension mean?
Straightening a joint to increase its angle.
What category does extension belong to?
Extension is a term from biomechanics in strength and fitness training. Browse more biomechanics terms in the Nishaana glossary.
Why does extension matter for training?
Understanding extension helps you train and program more deliberately — it is one of the ideas that separates guessing from a real, repeatable system.
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