Have a look at this exchange:
https://www.exrx.net/Questions/TrainingFrequency
You can do a search for "Bastionhead" on Youtube to hear more from this guy who swears by low volume, low frequency training.
By way of an update, after initially experimenting with once-a-week resistance workouts, I decided to give it a real try, and have been following such a routine since June of last year. So almost a year in, I can tell you that I am no weaker than I was when my frequency was higher. My body composition remains essentially unchanged, as do key measurements (arms, chest, legs). However, unlike the guy in the video above, I do 7 exercises (6 of which are compounds), and take breaks between sets. Further, I do a second set fairly soon after the first for 5 of the exercises. So I do a total of 12 sets in my weekly workout. Also, I do a brief HIIT cardio routine (<5 minutes) at the end of the lifting routine, and do a similar cardio routine on either one or two (usually two) other days of the week.