Originally posted by bikeguy
I don't see what's so fantastic/useful about 300 rpm with no resistance, it's equivalent to 5 stride per second turnover rate in a 60-100 meter dash (running) *except* that there is a high load and ROM in sprinting. I can hit 275 rpm with no load on a bicycle ergo, the gym guys asked me not to use the equipment anymore because they said I'd break it! My best 100 m is about 11.4 sec, but I can't approach 5 strides/sec (more like very low 4's) because my muscles power is poor in that range of motion. If you can reach 5 strides/sec with a reasonable stride length in a 100m dash, you'll win every race. I don't see the high rpm no load ergometer rpm relevance to cycle track sprinting as max rpm is 160-170, nowhere near 250+ rpm and the loads are quite high (if you can do 70+ km/h).
Overspeed work is carried out for athletics track training. When I was sprint training we used a pulley tow device to ensure we went 10% over our max speed. The same device was used in reverse to limit our max speed at max effort to 90% for underspeed.
The Soviet Bloc during the Cold War had learned through their extensive sports research programs using human guinea pigs that overspeed and underspeed training at the same maximum effort allowed sprinters to break through a physiological speed barrier.
If you could achieve 11.4 secs for 100m and you did not carry out these methods (would be only through lack of equipment or you are showing your age
) then your coach would have you under instructions not to train at 100% speed but a maximum of 95-98%. Training at 100% re-inforced this barrier limit.
The same principle applies to overspeed work on a bicycle ergo or low gear downhill on the road.
A rider who can achieve these 200+ rpm's on either zero or low resistance on an ergo improves the firing signals to his/her sprinting muscles so improved cadence, better control and forces can be applied in the competitive sprint range of 140-170 rpms.
Overspeed work on a bicycle ergo was also recommended for track sprinters in some publications I read at the time. However, I consider the principles of specificity would be breached.
It is not recommended to overspeed regularly, as you can fatigue your central nervous system (CNS). That fatigue cannot be detected and can only be presumed on the days when for some unfathomable reason you lack the zip.
One report I heard (heresay) was that the Australian Institute of Sport (AIS) recommended at least 10 days to fully recover from CNS overspeed work.