We measured the power that sprinters and non-athletes put out by Monark's bicycle ergometer under eight work loads from light to heavy.
Also we measured the power that was put out when sprinters and non-athletes repeated the work that recorded the maximum power respectively 10 and 9 times.
The results were as follows :
1) Large difference was not found between the largest power of sprinters and that of non-athletes in the works of 3 or 4 kp light work loads. But considerable difference between the largest power of sprinters and that of non-athletes was found as the work loads got on heavy from 5 to 7 kp. Sprinters who had best record of 10''7-10''9 in 100 meters dash put out the maximum power (90.4-105.8kgm/sec) under the work loads of 7 or 8 kp. On the other hand non-athletes put out the maximum power (62.1-85.2kgm/sec) under the work loads of 5 or 6 kp.
2) As the work loads got on heavy from 5 to 7 kp, such a large difference between sprinters and non-athletes was not found in forces, but remarkable difference was found in speed. And sprinters were better in speed under comparatively heavier work loads than non-athletes. This was a factor which caused the large difference in the max-imum power between sprinters and non-athletes.
3) The maximum powers which were put out by all subjects except two sprinters were situated on almost a straight line. But those of two sprinters were situated on the left of that line. This means that two sprinters excelled power output especially in speed.
4) When sprinters and non-athletes repeated the work which put out the maximum power respectively 10 and 9 times, having a rest for 4 minutes between the works, the powers did not indicate great decline from 1 to 910 times in both sprinters and non-athletes. But when they repeated the same work, having a rest for 1 mimute between the works, the powers indicated a considerable decline from about 5 to 910 times in both sprinters and non-athletes. And the rate of those decline did not indicate great difference between sprinters and non-athletes.
5) We found out three types on the power output in both sprinters and non-athletes as follows : (1) compared with the power decline from 4 to 5 sec, the rate of that from 5 to 6 sec was considerably high, (2) the power declined from 4 to 6 sec, and the rate of this decline was comparatively small, (3) the rate of power decline 4 to 6 sec was wholly maintained high.