Post-Activation Potentiation, How It Works & How To Use It When You Already Have A Training Base

PRIMER GYM SESSIONS

FOR GAA PLAYERS

Post-Activation Potentiation, How It Works & How To Use It When You Already Have A Training Base



What Is A Primer Session?


Right, so before we get into the science of it all, let me explain what a primer session actually is because a lot of lads have never heard of it and it sounds more complicated than it is.


A primer session is a short, low-volume gym session done in the window of 6 to 32 hours before a match. That is it. The name says it all. You are priming the body. You are getting it ready to produce force. You are not going in there to hit a new PB on the squat or to get a savage pump. You are going in, doing a handful of exercises, and getting out.


Sets and reps are low. You might be doing two sets of two or two sets of three reps per exercise. Maybe four exercises in total. A bit of mobility work, a couple of split mechanic drills, and you are in and out of the gym in 20 to 30 minutes.


Key point: 6 to 32 hours before throw-in. Not the night before in the dressing room. Not an hour before the warm-up. This window matters.



Post-Activation Potentiation (PAP)


Here is the bit that makes it all make sense from a science standpoint. The reason primer sessions work comes down to something called Post-Activation Potentiation, or PAP for short.


What Is PAP?

When you perform a heavy, near-maximal muscle contraction, something happens in the muscle fibres for a period of time afterwards. The myosin regulatory light chains in the muscle become phosphorylated, which increases the sensitivity of the contractile proteins to calcium. In plain English, your muscles are in a more primed state to produce force quickly.


Think of it like warming up an engine. A cold engine does not perform at its best. Get some heat into it and it responds a lot faster. PAP is that for your muscles.


PAP gives your muscles a heightened ability to produce force after a heavy contraction. It is not going to make you jump twice as high. But it can give you those extra couple of percentages that separate a good performance from a great one.


The PAP-Fatigue Relationship

Here is the thing. If you go too heavy or too hard, you create too much fatigue alongside the PAP effect, and the fatigue cancels out the benefits. This is why the weight is sitting around 80% of your one rep max and the volume is kept very low.


You want just enough of a stimulus to get the PAP effect without digging yourself into a hole of fatigue before a match. Two sets of two to three reps at 80% hits the sweet spot for most club players.


Why It Matters More When You Have A Training Base

This is the bit most lads miss. PAP does not work the same for everyone. If you are someone who has little to no training background, the PAP effect is going to be limited because the muscles are not conditioned enough to respond properly. The stimulus you need to trigger PAP can also be enough to leave you fatigued and sore the next day.


But if you have a genuine training base built up, meaning you have been consistent in the gym across the season or in the off-season, the PAP effect becomes much more accessible. Your muscles are used to handling load. They recover faster. The fatigue clears quicker and you are left with the potentiation effect working for you come match day.


This is why I am always saying to lads, build your base first. Get your two full body sessions a week done consistently across the season. Build that foundation. Then when you add a primer session on top of it, your body actually knows what to do with it.


If you are brand new to the gym, do not start primer sessions during championship. Nail the consistent gym sessions first. Build the base. Then introduce primers.



What Does A Primer Session Look Like?


Here is roughly what I do myself. I usually run it 24 hours out from a game. I have also done it 10 hours out and found no real difference. The research suggests anywhere from 6 to 32 hours works, so there is flexibility there depending on your schedule.


The weight is around 80% of your one rep max. The goal is to move it fast and with intent. Not grinding out a heavy single. You are moving the bar with as much speed and power as you can. That is what gets the PAP effect going.


Exercise

Sets x Reps / Notes

Box Squat

2 x 2-3 reps @ 80% 1RM paired with a counter-movement jump

Trap Bar Deadlift or Trap Bar Jump

2 x 2-3 reps, focus on hip explosion

Pendlay Row or Dead Stop Row

2 x 2-3 reps, pulling movement

Bench Press paired with Plyo Push-Up or Med Ball Throw

2 x 2-3 reps @ 80% 1RM

Broad Jumps (no load)

2 x 3 jumps, max effort distance

Split Mechanic Drills and Mobility Work

5-10 minutes, hip openers, sprint drills


Rest periods between sets: 2 to 3 minutes minimum. You are not rushing this. The whole point is to let the PAP effect build and the fatigue clear before your next set.


Total time in the gym: 20 to 30 minutes. In, get the work done, out. Do not bolt on a full arm session after it. Do not add 10 sets of abs. It defeats the purpose.



Contrast Supersets And PAP


Contrast supersets are one of the most practical ways to get PAP working for you in a regular in-season gym session, not just on primer day. The idea is simple. You pair a heavy compound lift with a plyometric or explosive movement that uses the same muscle group.


The heavy lift fires up the nervous system and creates the potentiation. You then immediately channel that into the plyometric movement. The result is that your jump, sprint, or throw gets a little extra pop from the PAP effect.


Heavy Lift (PAP Stimulus)

Paired Plyometric

Box Squat

Counter-Movement Jump or Broad Jump

Trap Bar Deadlift

Bounding or Trap Bar Jump

Bench Press

Plyometric Push-Up or Med Ball Chest Throw

Romanian Deadlift

Pogo Hops or Single Leg Bounding

Power Clean

Broad Jump or Drop Jump


Keep the RPE on the heavy lift at around 7, meaning you have three reps left in the tank. If you go to a nine or ten and absolutely kill yourself on the squat, you will not get the most out of the jump that follows. You will be too fatigued. The goal is powerful, not exhausted.



How To Fit A Primer Into Your Match Week


A lot of lads ask where the primer fits in with the rest of the training week. Here is a rough example of how it can look around a Sunday game.


Day

Session

Monday

Full Body Gym Session (RPE 7, contrast supersets)

Tuesday

Speed work before club training session

Wednesday

Rest or light recovery work

Thursday

Full Body Gym Session (RPE 7)

Friday

Light club training or skills work

Saturday

Primer Session (4 exercises, 2 x 2-3 reps, 20-30 mins)

Sunday

GAME DAY


If you are travelling home for games and cannot realistically fit a gym session in on a Saturday, do it on Friday. Or do it Thursday evening if your Friday training is heavy. The window is wide enough to work around your schedule.


Do not try primer sessions for the first time in championship week. Use the pre-season challenge games or early league games to find out how your body responds. Some lads love them. Some find no difference. Both are fine. Find out for yourself in low-stakes games first.



An Honest Take On Primers


Look, I am going to be straight with you. I have done primer sessions before games and felt unreal. I have also done them and felt no different. I had games this season where I did not do them at all and played some of my best football. So I am not going to sit here and tell you this is the magic formula.


What I will say is this. When everything else is in order, when the sleep is good, when the nutrition is sorted, when the training has been consistent, the primer can give you that last little nudge. It might be physical. It might be mostly mental. You feel prepared. You feel strong. And that confidence alone can change how you play.


Even if all it does is make you feel switched on and ready to go physically before a game, that is already worth something. If you feel powerful going into a match, you are more likely to back yourself to take on a man, to chase a ball you might otherwise leave, to attempt a score you might normally pass up.


Think of it like creatine. It is not going to turn you into a different player overnight. But it adds a couple of percentages. And if you are stacking up those small gains across your nutrition, your gym work, your recovery and your prep, those percentages add up over the course of a championship campaign.



Quick Rules To Remember


  • 6 to 32 hours before throw-in is your window. Not in the dressing room beforehand.

  • Weight at 80% of your one rep max. Move it as fast and powerfully as you can.

  • 2 sets of 2 to 3 reps per exercise. Low volume is the key.

  • 4 exercises max. Stick to compound movements. Push, pull, hinge, squat.

  • Take 2 to 3 minutes rest between sets. You are not doing circuits.

  • In and out in 20 to 30 minutes. No add-ons.

  • PAP works better when you have a training base. Build that first.

  • Try primers in low-stakes games before relying on them in championship.

  • If you got injured or are managing something, this is not the week to experiment.



Want A Full In-Season Gym Plan Built Around This?

The Complete In-Season Gym Plan on gazgaelicguide.com has everything mapped out across a full season. Contrast supersets, primer sessions, RPE guidelines, the lot

gazgaelicguide.com   |   @gazgaelicguide

 

Back to blog