Originally Posted by MacabreMikolaj
That has fairly little to do with horses. My aunt is right handed, and stronger in almost everything on her right side, however horses go better to the left for her. As an accomplished equestrian and coach, her horses go fairly equally in both directions but she has an uncanny ability to get on a horse who won't pick up a left lead and get that lead on the first try - the same ability doesn't work to the right.
when horses are on a left lead they're pushing on with the right hind.
Same applies for right handed humans in ice skating. Right handed people always feel more comfortable and have more power going in left hand circles.
And vice versa