Why you should train on one leg

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At Force Fitness we work to develop all aspects of athleticism with the hundreds of athletes we see each week. Speed, strength, power, reaction, lateral movement, balance, and even injury prevention all go into this equation to create better, more resilient athletes.

While many picture training an athlete by loading a barbell for max lifts like the squat, a heavy back squat really only addresses one of the qualities mentioned above: strength. For this reason, one of our biggest priorities is the development of strength in single leg exercises.

Bilateral strength training is and will remain an important part of any athletic performance program, however to develop well rounded athleticism it is a must that your prioritize single leg training in your program.

Here are several reasons why.

Single leg training can be done in multiple planes

Sports happen in all planes of motion, sagittal, transverse, and frontal, as such your training should happen in all planes of motion. In the weight room we often train in the sagittal plane too often and create athletes that cannot react to and create force in a multiple plane sport.

Creating and reacting to forces from the three planes of motion is essential to health and injury prevention. Training laterally will also help athletes better direct force into the ground for cutting and change of direction maneuvers.

Below is a video of a dumbbell lunge matrix that can knock out all planes of motion in one set

LUNGE MATRIX VIDEO— https://youtu.be/3hXw2ayTQ-M

Single leg exercise can allow an athlete to train with higher loads

Think of this scenario, athlete A squats a 400 lbs back squat for three repetitions, while Athlete B does a reverse lunge or RFE split squat with 250 lbs on his back for 3 repetitions per leg.

Athlete A has more absolute load, but athlete B has more load per leg (leading to a total that is actually greater than the bilateral version). This phenomenon is called the bilateral deficit, wherein athletes are often able to lift less on two legs than just doubling the amount lifted on a single leg.

Additionally, the single leg versions are often much more friendly to the athletes’ body. Equating the positional loading (front rack, back rack), of a bilateral and unilateral movement and you will see less compressive forces on the spine due to the lower absolute loads in the single leg variations.

Here are the best variations to load up and work on strength.

RFE Split Squat (KB)— https://youtu.be/FCSUBbHHfq4

Reverse Lunge (BB)— https://youtu.be/tJOtSv-Sb6I

Single leg exercise can reduce risk for injury

By training on a single leg we are often able to see and quantify imbalances which could lead to injury. Even looking at max reps or strength before technical breakdown in something like a split squat can tell us a lot about strength imbalances from one leg to the next.

One of the best ways to use single leg training for reduction in injury is to do much of your posterior chain training on one leg. Hamstring injuries never happen when on two legs, so preventing them can be done most easily by strengthening one leg at a time.

Here are two of my favorite back side single leg strength exercises.

SLRDL— https://youtu.be/8775KJX5iww

Single Leg Curl on Ball— https://youtu.be/AtWRGW-LjKQ

Athletes play their sports off and on one leg, sprinting, cutting, and leaping their way around the court, field, or track. In the weight room we must develop athletes who are strong, powerful, and resilient in the varied single leg stances they might encounter in sports.

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