Acceleration Phase
Posted: Tue Mar 30, 2004 11:41 am
I know I always ask very specific questions but here I go again.
In the 60's the sprinters used a stay low approach to sprinting the 100 and 200. There were some fast times, but not like current sprinters are running on a world level. By the 80's, Charlie Francis had implemented a very different start that incorporated a starting style which ejected the sprinter, namely Ben Johnson and Desai Williams, out at about a 45 degree angle and they would be up and running in almost full form by the 3rd step.
In 1996, another Canadian sprinter, Donovan Bailey who was consistent for almost four years at a high caliber competition level, (flash in the pan), used a start that was very explosive but clearly stayed in a lower running position for a specific number of steps. He used this method throughout the prelim and semi heats and then broke the world record at that time in the '96 Olympics. In the final, he was mediocre out of the blocks and in second to last place at mid point of the race and still won convincingly. He actually stayed in that low acceleration phase longer than anyone else.
Now everyone from Marion Jones, Inger Miller, Maurice Green, Alto Bolden and Tim Montgomery are using the stay low method for 10-15 steps depending on their height and running style. Most of the runners who popularized this method of sprinting are or have been under John Smith who makes good sense of his logic when asked.
Interestingly enough, Marion Jones has now incorporated (at her first meet since having the baby) a method of coming out of the blocks.
Last thing, interestingly enough, Marion Jones, who let go of Charlie Francis after scrutiny, uses Coach Pfaff and has used a start that gives a very explosive but quick push of the front leg and then it follows the lead leg out of the blocks so that it is ready for the second step out of the blocks immediately. She loses no momentum because the initial push is so aggressive it gives good time to recover and get the legs back under her, strikingly similar to Ben Johnson's old start.
What I want to know is, where do you stand on the various starts that are used? Allyson Felix is using the 80's method of starting and acceleration. Her coach was Evelyn Ashford's coach at one time.
Also, when do you use this method? I have a junior high school runner who just ran a 7.7 fully automatic in the 60 but she is up and running erect by the 4th-5th step. She is only about 4 and a half feet tall. She has run as fast as 11.8 in the 100 in her sophomore year. I want to change her start, but I am uncertain if I should do so.
In the 60's the sprinters used a stay low approach to sprinting the 100 and 200. There were some fast times, but not like current sprinters are running on a world level. By the 80's, Charlie Francis had implemented a very different start that incorporated a starting style which ejected the sprinter, namely Ben Johnson and Desai Williams, out at about a 45 degree angle and they would be up and running in almost full form by the 3rd step.
In 1996, another Canadian sprinter, Donovan Bailey who was consistent for almost four years at a high caliber competition level, (flash in the pan), used a start that was very explosive but clearly stayed in a lower running position for a specific number of steps. He used this method throughout the prelim and semi heats and then broke the world record at that time in the '96 Olympics. In the final, he was mediocre out of the blocks and in second to last place at mid point of the race and still won convincingly. He actually stayed in that low acceleration phase longer than anyone else.
Now everyone from Marion Jones, Inger Miller, Maurice Green, Alto Bolden and Tim Montgomery are using the stay low method for 10-15 steps depending on their height and running style. Most of the runners who popularized this method of sprinting are or have been under John Smith who makes good sense of his logic when asked.
Interestingly enough, Marion Jones has now incorporated (at her first meet since having the baby) a method of coming out of the blocks.
Last thing, interestingly enough, Marion Jones, who let go of Charlie Francis after scrutiny, uses Coach Pfaff and has used a start that gives a very explosive but quick push of the front leg and then it follows the lead leg out of the blocks so that it is ready for the second step out of the blocks immediately. She loses no momentum because the initial push is so aggressive it gives good time to recover and get the legs back under her, strikingly similar to Ben Johnson's old start.
What I want to know is, where do you stand on the various starts that are used? Allyson Felix is using the 80's method of starting and acceleration. Her coach was Evelyn Ashford's coach at one time.
Also, when do you use this method? I have a junior high school runner who just ran a 7.7 fully automatic in the 60 but she is up and running erect by the 4th-5th step. She is only about 4 and a half feet tall. She has run as fast as 11.8 in the 100 in her sophomore year. I want to change her start, but I am uncertain if I should do so.