Does rock climbing exercise the fast twitch or slow twitch muslce fibres more than the other?
Metabolism
Type I muscle fibers (slow-oxidative fibers) use primarily cellular respiration and, as a result, have relatively high endurance.
To support their high-oxidative metabolism, these muscle fibers typically have lots of mitochondria and myoglobin, and thus appear red (what is typically termed "dark" meat in poultry.)
Type II muscle fibers use primarily anaerobic metabolism and have relatively low endurance. These muscle fibers are typically used during tasks requiring short bursts of strength, such as sprints or weightlifting. Type II muscle fibers cannot sustain contractions for significant lengths of time, and are typically found in the white meat (e.g., the breast) of chicken.
(http://en.wikipedia.org/wiki/Muscle_fiber#Type_I)
People don't generally sprint up rock faces, rather they move slowly and deliberately.
Slow-twitch.
Category: metabolism
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i'm not 100 percent sure but i would say it might depend on the type of clumbing (some people are speed climber and can climb FAST} but i would probabably say slow because it is alot about endurance if you used your enegy quickly as fast twitch you would probably fall to your death (if you had no ropes of course)
References :
general knodledge
People don't generally sprint up rock faces, rather they move slowly and deliberately.
Slow-twitch.
References :