Leg Extensions

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General info

Force type

Exercise type

Mechanics type

Level

Targeted muscles

Quads (look at the image)

How to perform exercise

For this exercise you will need to use a leg extension machine. First choose your weight and sit on the machine with your legs under the pad (feet pointed forward) and the hands holding the side bars. This will be your starting position. Tip: You will need to adjust the pad so that it falls on top of your lower leg (just above your feet). Also, make sure that your legs form a 90-degree angle between the lower and upper leg. If the angle is less than 90-degrees then that means the knee is over the toes which in turn creates undue stress at the knee joint. If the machine is designed that way, either look for another machine or just make sure that when you start executing the exercise you stop going down once you hit the 90-degree angle.
Using your quadriceps, extend your legs to the maximum as you exhale. Ensure that the rest of the body remains stationary on the seat. Pause a second on the contracted position.
Slowly lower the weight back to the original position as you inhale, ensuring that you do not go past the 90-degree angle limit.
Repeat for the recommended amount of times.

Variations: As mentioned at in the foot positioning section, you can use various foot positions in order to maximize stimulation of certain thigh areas. Also, you can perform the movement unilaterally (one leg at a time).

What muscles work?

If the correct technique is followed, the following muscle groups work: Quads, and auxiliary muscles:

Weight and number of repetitions

The number of repetitions and working weight depends on your goal and other parameters. But the general recommendations can be presented in the form of a table:

Goal	Sets	Reps	Weight, %1Rm	Rest between sets
Strength	2-6	1-5 reps	100-85%	3-7 min
Mass gain	3-6	6-12 reps	85-60%	1-4 min
Fat burning	2-4	13-25 reps	60-40%	1-2 min

In order to make the training more diverse and effective you have to change the number of repetitions and the working weight. It is important not to go beyond certain values!

Goal and number of variations		Level	Weight*	Reps*
			kg

*Specify the weight and the maximum number of repetitions that you can perform with this weight.

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Online workout diary
Remembers your working weight
Counts the load for you
Controls the rest time

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Exercise substitutions

You can try replacing the exercise «Leg Extensions» with one of these exercises. The possibility of replacement is determined on the basis of the muscle groups involved.