Has anyone used a radar gun or laser for measuring instantaneous velocity for sprinters? Just curious. I was in Calgary last summer and some Aussie coaches were using a laser set up to measure start and accel velocities for women’s skeleton.
Is there any use for this type of measurement and can it be used reliably and consistently? Charlie?
In Europe there is a laser that is used in this fashion made by a German company called Jenoptik called the LAVEG Sports Laser.
http://www.jenoptik-los.de/cms.php?pageid=265&lang=1
This is shown to be reliable in a few publications including:
Harrison et al MEASUREMENT IN PHYSICAL EDUCATION AND EXERCISE SCIENCE, 9(4), 219–231
However, I emailed the company and they have discontinued the product. I personally would be very interested in this kind of product if one was available.
So, just how powerful they are coming off the blocks? Or are you looking for meters/sec?
The reactime from finishlynx checks reaction time and power.
Documentation:
This system was in use at 1996 Olympics, 1997 and 2007 World Champs. In 1997, both laser gun and high speed video recordings were used and intermediate times difference was found at about 0.01sec. Thus reliable.
all of the state institutes use them here…
I have JR booked in prior to xmas and will post the charts on here for you to have a look at.
Can you find the make and supplier of the ones they use. Also if you have the chance try and see how easy they are to use. The one I looked at ran from a PC but used a DOS based software package hence was unusable!!!
The aussies also did some work with our men’s team here and used a few of us as test athletes.
They were not using it for velocity but to test our 30m times, in between vibration and jump tests.
Do you know the top speeds for Powell/Gay in the 100m last summer? For osaka of course.
TOP END SPEED in Osaka Final
Gay Fastest split 0.84 (60 to 70). Maximum speed 11.83 m/s from 60 to 70.
0.143
1.90
2.94 1.04
3.86 0.92
4.73 0.87
5.59 0.86
6.44 0.85
7.28 0.84
8.13 0.85
8.99 0.86
9.85 0.86
Atkins Fastest split 0.85 (twice). Maximum speed 11.74 m/s from 50 to 60.
0.137
1.90
2.93 1.03
3.87 0.94
4.75 0.88
5.62 0.87
6.47 0.85
7.33 0.86
8.18 0.85
9.04 0.86
9.91 0.87
Powell Fastest split 0.85 from 50 to 60. Maximum speed 11.79 m/s from 50 to 60.
0.145
1.87
2.91 1.04
3.83 0.92
4.71 0.88
5.57 0.86
6.42 0.85
7.28 0.86
8.15 0.87
9.03 0.88
9.96 0.93
I doubt there was a speed taken for the 9.74 Powell ran, but could we assume that he ran faster than Bailey/Lewis’s top speeds? Regardless Powell’s run is more impressive than any other as he ran 0.83 3 times compared to Lewis and Bailey doing it once.
Ben had .83 for two segments in Seoul. Bailey didn’t have one as far as I know.
O my bad, I completely forgot about Ben.
Are you sure about Bailey? Didnt he have the fastest recorded top speed at the time?
That’s his opinion that isn’t supported by any 10m split. An instantaneous speed doesn’t equate to the average top 10m split times because they also peak above the average.
Pj did a split analysis for this race. should be in the archives. Anyone find it?
No data for the first 20m.
0.137
??? 2.88 3.79 4.65 5.49 6.32 7.15 7.98 8.84 9.74
??? ??? 0.91 0.86 0.84 0.83 0.83 0.83 0.86 0.90
I also put all the sub 9.80 runs into a table. Sorry, don’t have one that has times to each point.
_____ Safa Safa Safa Safa Tim Mo.G BenJ Mo.G
React .137 .150 .145 .148 .104 .162 .132 .132
00-10 .___ 1.89 1.86 1.87 1.89 1.86 1.83 1.83
10-20 .___ 1.02 1.02 1.02 1.03 1.03 1.04 1.00
20-30 0.91 0.92 0.93 0.92 0.91 0.92 0.93 0.92
30-40 0.86 0.86 0.87 0.87 0.87 0.88 0.86 0.89
40-50 0.84 0.85 0.85 0.84 0.84 0.88 0.84 0.86
50-60 0.83 0.85 0.84 0.84 0.83 0.83 0.83 0.83
60-70 0.83 0.84 0.84 0.84 0.84 0.83 0.84 0.83
70-80 0.83 0.84 0.85 0.85 0.84 0.86 0.85 0.86
80-90 0.86 0.85 0.85 0.86 0.85 0.85 0.87 0.89
90-00 0.90 0.85 0.86 0.86 0.88 0.85 0.90 0.91
_TIME 9.74 9.77 9.77 9.77 9.78 9.79 9.79 9.82
Easy to see now only thing missing from Powell was the best 10m split, provided he runs a full race, he can break 9.7 if he repeats his 9.74 form.
I seem to be missing Gatlin’s 9.77. Anyone have splits for it?
The new tracks yield superior 30s- ie MG 3.75 vs 3.80 for Ben but 30 to 80 Ben remained unsurpassed till Asafa’a 9.74
list: Asafa 4.19
Ben 4.22
Tim 4.22
Mo 4.26
This also confirms that Asafa can go considerably faster by running right through.
BTW, if you doubted Tim’s top speed, have a look.
PJ has them
I’ll post them once i get back home.
Mo Greene listed times and Asafa’s 9.77 in Zurich are not coming from biomech analysis and not from my work. I’ll check the rest later.