The antagonist muscle used in a leg curl is the quadriceps, located at the front of the thigh. During a leg curl, the hamstrings contract to flex the knee, while the quadriceps must relax and lengthen to allow this movement. This reciprocal inhibition helps facilitate smooth and controlled leg movements.
The agonist muscle used in a side leg raise is the adductor.
The leg curl and leg extension exercises strengthens two muscle groups. The two muscle groups are the hamstring muscles and the quads or quadricep muscles.
The leg curl whether standing or sitting works the hamstring muscles, biceps femoris, which are on the back of the thigh.
The leg curl is a muscular resistance exercise that primarily works the quadriceps. It involves the knee joint and develops strength in the quadriceps at the front of the thigh.
your mums hole
hamstrings mostly, and glutes to a lesser extent
The triceps lengthens when the biceps contracts, making the triceps the antagonist.
Most muscles in the body have "counterparts", one pulls and your leg curls up, the other pulls and the leg straightens. They would be on opposite sides of your leg. The "biceps" are the upper arm top muscle, and the tri-ceps (I think) is the upper arm bottom muscle. They work in conjunction to let you 'curl a barbell'' or do a chin-up.
leg muscle
it works your abs
The plantaris is the smallest muscle in the human leg. It is used to flex the knee joint and is absent in about 7 percent of the human population.
Leg Curl