Stretching The Agonist Muscles
Agonist Muscle are the muscles employed in an exercise.
Antagonist Muscles
These are essentially the muscle on the opposite side of the working muscles.s
Bench Press Example
Agonist Working Muscles: Anterior Deltoid, Pecs, and Triceps.
Antagonist Non-Working Muscles; Posterior Deltoid, Lat’s and Biceps.
Pre-Stretching The Agonist Muscles
Research show that Pre-Stretching the these muscles around 15 seconds before the exercise can produce more force; strength and power.
However, stretching them 30 seconds or longer, dampens force production; decreases strength and power.
Pre-Stretching The Antagonist Muscle
Research shows that stretching the Antagonist Muscles prior to an Agonist Exercise increases force production; increase strength and power.
That because the Antagonist Muscle operate like an emergency brake on a car. When performing an Agonist Exercise, it’s similar to driving your car with the emergency brake on.
Essentially, stretching the Antagonist Muscle amount to releasing the emergency car brake.
In a Bench Press, many lifter pull up on the bar prior to Bench Pressing. Unknowingly, they stretch the Antagonist Muscles, which allow them to produce more force in the Bench Press.
Lombard’s Paradox
The lower body functions a little differently.
Lombard’s Paradox means that in a Squat, Deadliff, etc., both the Agonist and Antagonist Muscle fire in the movement. That mean the Quads, Hamstrings and Glutes are innervated in getting the weight up.
With that in mind, stretching the posterior chain prior to a Squat, Deadlift, etc. should be kept to around 15 seconds to ensure the greatest force production.
Exception To The Rule
As with everything, there is an exception to the Stretching Rule when it come to Hypertrophy
Training.
Research by Dr Jake Wilson determining that stretching approximately 30 seconds after each Hypertrophy Training Set increase muscle mass.
Training Objective
When it comes to stretching, the Training Objective is the determinate factor in your choice of the various stretching protcols.
Recommendations
- Strength/Power Training Days
a) Antagonist Muscle Stretching is effective at increasing your force production in Agonist Exercises.
b) Short Agonist Stretches (15 seconds or less) appear to increase strength/power in an Agonist Exercise.
- For Hypertrophy Training, stretching the Agonist Muscles after and Agonist Exercise for 30 seconds appear to increase muscle mass.
Kenny Croxdale