Workout Three (60mins): Motor Unit Recruitment

Trainers’ tip

It’s now important to understand how strength works. When our muscle contracts, we develop force. The ‘harder’ a muscle contracts, the larger the force output.

Muscles are made up of muscle fibres. Muscle fibres are controlled by motor nerves. Motor nerves will innervate a group of muscle fibres. This is known as a motor unit. We have low threshold motor units and high threshold motor units, which are activated with lower and higher intensities respectively.

Strength adaptations are largely achieved via activating our high threshold motor units. The most popular way to do this is to lift heavy loads. Here, we need to activate all of our motor units to overcome the external load. However, with calisthenics, there is a point where many exercises will feel relatively easy. But, there are still ways to recruit those high threshold motor units.

One way is via lifting speed. Back to our quick physics lesson, force = mass x acceleration. If we accelerate quicker, we increase our force production through activating our high threshold motor units. Explosive exercises therefore become a highly effective method for motor unit recruitment with bodyweight training.

Another way is lifting close to failure. You will see more exercises prescribe AMRAP (as many reps as possible). Here, as the low threshold motor units fatigue, we need to still somehow maintain our force production to overcome the external load. Using this method, we recruit our high threshold motor units as we approach failure.

Workout overview

SetsRest
1a. OAC negatives
1b. Nordic curl hold
32.5min
2. Front lever raise (bottom half)42mins
3a. Chin-ups
3b. Dips
33mins
4a. Feet elevated row
4b. Hollow body hold
32mins

1a. OAC negatives

Start with hand in the middle of your chest and chin above the bar.
Lower slowly until your arm is fully extended.

1b. Nordic holds

Start with your glutes engaged, core tight and drive your heels into the bench.
Lower as far as you can while maintaining a straight body.

Perform this exercise for 3 sets w/2.5min rest

Week 1Week 2Week 3Week 4
1a. OAC negatives x33sec4sec5sec5sec
1b. Nordic curls15sec15sec15sec15sec

2. Front lever raise (bottom half)

Start sitting on the floor with legs and arms straight.
Use your lats to pull yourself into the front lever position and hold for 2secs.

Perform this exercise for 4 sets w/2min rest

Week 1Week 2Week 3Week 4
Bottom lever raise5555

3a. Chin-ups

Start with arms straight and legs extended.
Drive elbows to the floor and touch collarbones to bar.

3b. Dips

Start with arms fully extended.
Don’t let your back arch. Imagine squishing a bug with your low back.

Perform this superset 3 times w/3min rest

Week 1Week 2Week 3Week 4
3a. Chin-ups12131415
3b. Dips12131415

4a. Feet elevated row

Start with legs straight and core engaged.
Drive elbows to the floor and touch chest to the bar.

4b. Hollow body hold

Keep shoulders up and back flat.
Don’t let your back arch. Imagine squishing a bug with your low back.

Perform this superset 3 times w/2min rest.

Week 1Week 2Week 3Week 4
4a. Feet elevated rowMaxMaxMaxMax
4b. Hollow body hold 45sec50sec55sec60sec

Workout recap


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