Most movements in exercise are
isotonic muscle contractions.
There are two types of
isotonic muscle contraction - Concentric and Eccentric.
Not exact matches
Muscle contractions which result in movement are known as
isotonic contractions.
Ironically, the strength and lean
muscle gains exhibited at the studies initial end (6wks) were maintained during the extended trial period, exhibiting some possible
isotonic attribute.
Plus, the crunch is an
isotonic movement that involves shortening of the
muscles against gravity.
In general,
isotonic exercises are more effective for
muscle hypertrophy than isometric ones.
Isometric contractions of the
muscles experiencing myofascial pain also increases the pain; whereas
isotonic contractions of the
muscle does not.
Weight training is resistance training — both
isotonic movements (contracting
muscles through a range of motion, like lifting dumbbells) and isometric movements (contracting your
muscles against each other or a fixed object, like a plank or wall sit.)
It is interesting that the non-significant EMG amplitude changes after
isotonic training follow a U-shaped curve, but only contribute to greater torque increases than the middle range of motion at short
muscle lengths (30 degrees).
They tested joint angles from long (90 degrees of knee flexion) to short (30 degrees of knee flexion)
muscle lengths, expecting to see greater gains for the
isotonic group at both ends of the range of motion, where loading was higher than in the middle.