Newbie here. Is this a decent workout?

[Whatsgoingonwithmyhead]

5 different leg machines.
3 sets of 12 reps on each

3 different core/abs machines
3 sets of 12 reps on each

6 or 7 different arm machines
3 sets of 12 reps on each

Is the above a decent workout? I’m setting the weights so it feels very hard by the end of each set of 12 reps

How many times per week do I need to do the above to build muscle?

thanks

Taking it more slowly is good - it's amazing how much harder it is to do moves slowIy, it recruits more muscles for longer so you get more training impact as well as being able to focus on good form.

I think free weights are much more effective as they work more muscles at once, but it helps to get a PT to guide you on technique. Also as a runner single leg exercises can really help build core stability and alignment to support your technique.

To make time to fit in slower reps and rest, you may want to plan your sets so one set of muscles can rest while another set works (e.g. squats alternating with shoulder press). Not that you can't do that on machines too but it's easier when you don't have to move from one machine to another.

Good luck, such a good thing to invest time in.

As PP say this is a huge amount for one session and must take a really long time?!

I rotate weights in the gym and running so do 3 or 4 sessions a week (full body workouts) but I go before work so don’t have loads of time. I do 6-7 exercises per session, tends to take me about 40 mins.

Maybe split what you’re doing across three sessions, making sure you’ve got a good mix of body areas (or focusing on one area each time if you prefer - not my style though ha). You’ll be able to adequately recover between visits then as well.