I suppose its better than doing nothing, but wont do much of anything for you. Most wouldnt even be able to maintain on that. IMO you need to hit the body optimally 2x per week so that youre training 4x per week. You should split your body into at least 2 days of training and repeat that once so that youre training 2days on 1 off then 2 on then 2 off. Splitting into 2 days of training instead of one will make the workout much shorter and youll be able to reach more intensity. thats about the min I could do to make any sort of gain or just maintain what I had.
If this is the case for max growth then why do so many bodybuilding works look like this (only once on each group a week)?:
Mon - Chest, Shoulders, Triceps
* Incline press - warm-up sets, 1 work set
* Flat flyes - 1 work set
* Millitary press - 1 warm-up, 1 work set
* Lateral flyes - 1 work set
* Rear delt machine - 1 work set
* Tricep pushdowns - 1 warm-up, 1 work set
* Lying tricep extensions - 1 work-set
Wed - Quads, Hams, Calves
* Squats - warm-ups, 1 work set
* Leg press - work set
* Leg extension - work set
* Leg curl - warm-up, work set
* Stiff leg deadlift - work set
* Standing calf raise - work set
Fri - Abs, Back, Bis
* Rope crunches - warm up, work set
* Lat pull down - warm-ups, work set
* Deadlift - warm-up, work set
* Bent-over rows - work set
* Shrugs - work set
* Standing BB curls - warm up, work set
* Concentration curl - work set