Are fast twitch muscles/speed that delicate?

General Fitness
21

Dazed, I thought all fibres went through atrophy with rest, and it was just the proportions of fibres that changed, ie. type II a decrease and type II b increase? With aerobic training, surely type I and IIa would increase in size and type IIa would also increase in proportion, with type IIb decreasing in proportion?

22

Originally posted by Dazed
[b]Where was it written that speed shouldn’t be performed all year around? In my post i said that EMPHASIZING speed all year round had no benefits. In addition to this I also stated that the the required firing patterns for sprinting would not only not be comprimised but could actually be developed if the longer runs during the GPP are performed correctly.

In fact it is likely that emphasizing speed all year round could have an effect adverse to what you are stipulating - a decrease in co-ordination or the learning of in correct firing patterns due to poor recovery and the physcological effects of an athlete performing similar work with out a wide variety of stimulus. [/b]

:eek: :eek: Sorry Dazed I guess I missed the word emphasize. I agree that you should periodize on speed and cut back on it at certain points throughout the year.Also this may be a dumb question?But whats defined as speed work?Anything 100% anything below 100 meters?There’s alot of stuff you can do that can still be fast but that is different. Also during the GPP what would you do for speed work?Would you cut it out completely?Also if I did 3x30,3x40 for example one day with a strong wind behind my back and then another day I did 3x30,3x40 into the wind would their be enough of a difference that I could use the wind as a way to periodize or cut back on speed. Also I’m pretty sure Westside lifts heavy all year round and they seem to be pretty succesfull.They are lifting heavy all year round but changing the exercises can the same been done with high-intensity speed work.

23

Using CFTS Methodology:

Speed Work is anything above 95% of best performance, allowing for conditions. Charlie has stated previously that variety within this bracket (95-100%) provides sufficient varaibility to prevent plateauing of speed development. Running into/with a wind is one such way to provide such stimulus.