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TERMINOLOGY
talk nerdy with me
abbreviations
BB = Barbell
DB = Dumbbell
KB = Kettlebell
ROM = Range of Motion
DEFINITION
Muscle action in which the muscle lengthens because the contractile force is less than the resistive force. The forces generated within the muscle and acting to shorten it are less than the external forces acting at its tendons to stretch it.
LAYMAN'S TERMS
When the muscles lengthen during a repetition. This is usually the part of the repetition where most people 'relax' - even though you shouldn't.
EXAMPLE
During a sit-up with the trunk held straight, the abdominal muscles act isometrically to maintain the rigidity of the trunk, while the hip flexors carry out the sit-up movement.
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