There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Then how does this power arrive from the bear's "supposed" lack of fast-twitch muscles?
Obviously, with a bear and an equally-weighted cat, the bear has thicker hindlimbs and similar or thicker forelimbs than the cat (depending on species of both). Since fast-twitch muscles are the least densest, and make up the most volume of almost any animals limbs, then shouldn't that hint that the bear has more fast twitch muscles in its forelimbs?
Cats (like early hominids and us) tend to have a bigger arm girth/chest girth ratio than bears (and early primates.) So at equal weights, cats have heavier arms than bears, and if the bear's limbs are still just as big, it should definitely hint at a higher fast-twitch muscle ratio.
Back on another thread, I remember posting an article about older bears being stronger than younger ones. The prime-aged male bear had about 50% of its total musculature comprised of fast-twitch muscles, and big cats like tigers and lions usually have 70-75%, and saber-toothed cats up to ~85%.