CTKook is right. Not only are his statements supported by specific research findings, they comport with more general neurophysiological principles. The discussion about ballet dancers is particularly apt and, as it turns out, an area in which I have some personal experience. My wife spent 18 years as a professional ballet dancer, ending with a 6 year stint as a principal dancer for the New York City Ballet. She is a very highly skilled and extensively trained professional.
Professional dancers are powerful, flexible, accustomed to and accepting of physical discomfort, mentally focused and, despite their propensity to smoke like chimneys and drink ordinary mortals under the table, very aerobically fit. All ideal traits for skiers in training. When she retired, my wife took up skiing in the company of several other retired dancers here in Utah. (Her contracts had always precluded her skiing as a condition of employment.) Far from facilitating learning to ski, the movement and balance patterns ingrained through decades of dance training - entirely different from those of skiing - proved to be very hard to overcome. Not only her experience but that of the others too.
Before anyone shrieks that this anecdotal account is far from a controlled study, let me agree that it "proves" nothing. Food for thought though.