If i was to train a beginner client who has no experience in the gym and their goal was to increase muscle or build strength. The best approach for that goal will be prescribing a full body muscle building program. Now i know i said full body program is the best approach but is that the first thing i train the client on ? after i meet the client for the first time and do all assessments on him/her ( fitness, posture, nutrition, strength, flexibility assessments) after that first day when he/she comes back and is ready for day 1 of training with me do i train the client from that day and on wards using the fullbody muscle building program that i created based on all results i got from assessments ? and another question if i was to train that person 2 or 3 times a week would i need to make different full body muscle building programs for each day using similar format ? or do i train the client 2 or 3 times a week using same program for each day
There is many ways you can go about this, But first cover the basics. your client is new to working out so defiantly do a full total body exercise plan covering every muscle group and a cardio plan as well
You can use cardio interval between sets of very exercise. or leave part of the session for just cardio.
Now you have your strength and cardio plan together, if you training the client twice a week, go ahead and split the program in two. Three times a week you can do lower, upper, core. Four days, you can do chest/ back, bi/legs and abs/shoulder for example.
As I said there is many ways to go about this.
Best way is to look at your client write down that they need as far as all component of fitness and plan from there. keeping in mind what they want and like to do and how hard they want to work. You have to experiment as well.
I hope I answered you question. at the end of the day you should feel that your client is enjoying the workout, they are getting stronger more flexible and that they know more about fitness than the average person in the gym, because you taught them everything they need to know to be successful.