Could taking Finastride or eating sugars cause a person to kick, jump, talk in his sleep?

I heard from a Cousin that she cannot eat sugars close to bedtime because her legs kick out.  My husband loves a dish of ice cream sometimes just before bed.  He kicks, throws his arms out, talks, jumps in his sleep.  It is not every night so that is why I thought perhaps it is from the sugars.

My 71 year old husband never actually kicked before the last 2 years.  He was in good condition, was a runner and very active and NOT overweight.  It was about 6 years ago that his legs got to feeling numb and crawly and the Drs. couldn't find any reason.  He had used gasoline to clean off pitch from his legs and arms.  Then he couldn't walk or jog like he used to do. Recently he is able to go on 2 mile walks. However before this he started 'running' his legs in his sleep and now for 2 years is kicking more and more.  He also throws his arms around and has hit me.  Recently, since he is taking Finasteride, he has leaped out from under the covers and over to my side of the bed where my legs are.  It scares me and I put a long round pillow between us when he starts to kick.  I don't want to be injured.  He even kicked himself right out his side of the  king sized bed.  My husband took no medications before he started the kicking.  Now he takes Finastride and the sleep activities seem worse.  

I need help because it disturbs my sleep and I am afraid of being injured.  He doesn't think he is as bad as I say.  He has no memory of his dreams or of doing any activities.  I am afraid to wake him because he might be worse.  I do scream when he hits, kicks me or lands on me, but he doesn't wake up even then.