Dibby
Assistant Pro
A latecomer to this thread.
My thoughts on the gym as someone who goes quite regular. I don't see much benefit from lifting weights for golf. The golf swing has very little to do with the size of your muscles. Not many pros are very big. What i do find is that playing golf within a few days of a good weight session can be a hindrance, due to the lack of mobility.
What i would recommend is not to push yourself too far with the weight, as all this brings is injuries. I missed the main part of the season last year with a torn bicep tendon from deadlifting. I've also had a traped nerve in my back for over 2 years from shoulder press.
More reps less weight and circuit training is better on the body I find. Though i can't help myself with the heavy weights as its almost part of my job! I just tone it down over the golf season. And mix your workouts up as much as you can.
As for actually going to the gym, don't worry about what anyone else is doing or what they are lifting. But do look out for people doing exercises that you hadn't thought of.
Oh and if you see a squat rack, its not for shoulder press, upright rows or bloody curls. Its for SQUATS!
Size of muscles doesn't have much to do with the swing, but force and power production does. Whilst mobility is important too, you need strength to swing the club faster, assuming that is a goal.
If your weight sessions are hindering mobility, I would suggest you are doing them wrong, and look to change your routine up. Same for the injuries, yes they sometimes happen, but mostly they are caused by an issue with form, or by working beyond your capability.