Not Chuck Conners, John Travolta or Lex Barker
Yes, yes, we have a winner!
Very well done IamNicklaus, it is indeed Ron Ely.
When I was a small boy, Ron Ely (Tarzan) was my icon. I was a skinny kid and I wished to have a physique like Ron's when I grew up (never happened, lol). When playing Tarzan, Ron sped through the jungle with a running style that I tried to copy, an I always felt that I ran faster (unlikely) when I adopted his technique.
Happy days. : )