The rules behind the plan
- Three days between a match and heavy leg training, on both sides. A 2018 meta-analysis of 77 studies on football found hamstring force and sprint performance still measurably down 72 hours after a match (Silva et al., 2018).
- The day after a match is for recovery and the day before for staying fresh. Neither is a gym day.
- Never two gym sessions on back-to-back days. A light session can sit two days from a match; a heavy one needs three.
- In-season, one session a week holds what you built. Professional footballers who kept one strength session a week maintained their strength and 40 m sprint for 12 weeks; those who did one every two weeks lost some of both (Rønnestad, Nymark and Raastad, 2011).
These are rules of thumb built on those findings, not a tested programme. If your legs still feel heavy on the planned day, move the session or make it lighter.
Why bother lifting in-season at all
Strength you do not use slips away, and a season is long: in the study above, one session every two weeks was already too little to hold leg strength and sprint speed. A short, heavy session a week keeps what you built in pre-season.
It also protects you. A meta-analysis of 25 trials with 26,610 participants found that strength training programmes cut sports injuries to about a third, where stretching programmes made no measurable difference (Lauersen, Bertelsen and Andersen, 2014).
What a short in-season session looks like
- Warm up for 5 to 10 minutes, then build up to your working weight in a few sets.
- One squat or hinge for the legs (a squat, trap bar deadlift or Romanian deadlift), 2 or 3 sets of 3 to 5 reps, heavy but with 2 or 3 reps left in the tank.
- A single-leg exercise or Nordic hamstring curls, 2 sets.
- A push and a pull for the upper body, 2 or 3 sets each.
- Stop there. The goal is to keep strength, not to leave the gym tired.