You should maybe do half in half..before and after so you don't tire or tighten up. I would recommend switch it up. sometimes I would lift to tire out the muscles then train boxing to get a up hill battle with heavier arms...some days no weights at all and just box train. I wasn't into body weight training ,as I found you get a lot of strength just hitting bags, so weights would just fill in the things boxing and plyometrics cant do. Its important to lift /train legs/ lats /chest (benching because its connected to the front shoulder )and get a bicep work out in( these are useful muscles in power punching), preferably concentration curls since its a hooking motion ...compound lifts work best because when you punch its a compound movement( using different muscles at the same time not just separate) foreman said the old advice of no weight training was a common rule until he decided to lift in his comeback,and noted stronger punching,so in case you don't take my word for this. Weights help in all sports and overall make the body stronger and better balanced. you just have to lift correctly for each sport. In the end only you are going to know whats best fopr you and what your regimine is, anyone who states do this and that and when usually are just reading articles. A coach or strength program is usually tailored for different ppl. you don't need size to get better but stronger/lean muscle will be faster and hit harder.
Thanks for answer. I have read different opinions about weights, Michael Nunn for example, said good things about his weight training, but fighters like Chris Eubank were against it, in my personal experience, it made me too slow, so i stopped it. I like the idea of going half and half or switch it up, i will try that.
Lifting weights is okay as long as it makes you stronger and you remember stretching. Most modern boxers lift weights nowdays, but they'll do exercises that benefits their boxing game not bodybuilding stuff.
You can make yourself less explosive by lifting heavy weights slow for sure. I would try adding in speed squats/speed bench with 70-80% 1 RPM for triples or box jumps, but add it into your other training at the same time so you are also training strength-endurance. Round on the bag 3 reps on speed squat 3 reps on speed bench Round on the bag 3 reps on speed squat 3 reps on speed bench etc Just lifting weights in a separate session so you can display force when you are 100% recovered and not tired at all is less sports specific to boxing than displaying force when you are tired. To the originally question, I would think you would want to tire yourself out sometimes first and then box to match a real fight and sometimes do it after to focus on technique while fresh.