1. PAGES 1-35 - Texas Track & Field Coaches Association

More documents

Recommendations

Info

APPROACH RUN AND ACCELERATION PATTERNS I was contacted by associate event director Lane Maestretti about creating a station to test and provide feedback for athletes (primarily high school) in regard to their approach run. We talked about methods of timing the run in an accurate and reliable manner. Further, Lane thought it would be beneficial to provide feedback on run-up lengths as to their effectiveness feeling that many a high school athlete (and coach) try to use a longer-than-needed approach length. We decided that we wanted to have feedback on the speed the athlete was running at a series of successive intervals. The testing length was to be equal to the maximum approach length of any athlete whom we were to test. Since most of the research refers to speed (velocity) as measured in meters per second, a metric measure was used. The test allowed the athlete a three meter (about 10 feet) run into the first timed segment. Each timed segment was five meters in length. Seven segments were timed so the total run length evaluated was 38 meters. This run up length is equal to or exceeds an 18 step (e.g. nine left) approach for almost all vaulters. Diagram 1 provides the outline of the basic set up. The next hurdle to cross was how to time this so that the result would be available in a timely manner and with a reasonable amount of accuracy. Video tape was rejected due to the time analysis would have taken and the fact that using hand held times for this type of project would be far too unreliable (inaccurate). Fortunately, devices such as the Brower Timings System Speed-Trap and Brower TC are made for this type of thing. I had two units that I share with football and soccer but our proposed set up required eight gates. Fortunately, Brower Timing Systems is located in Salt Lake City, which is only a couple of hours away from my home. I contacted Mark Brower of Brower Timing and he was kind enough to lend us the eight photo gates (A-B units) required, 16 tripods, two TC-timers, and two display boards for our project. See diagram <strong>1.</strong> MIKE CORN PHOTOGRAPH 10 techniques AUGUST 2011
Peak velocity was noted for each athlete, each trial, and the compilation of these peak velocities graphed. See Graphs 1 & 2 . It is important to note that before the data of any trial was used it was screened for any obvious error. The primary error, albeit one that rarely occurred, happened during the pole carry trials. The athlete would drop the pole and prematurely trip the photo gate. That determination was made on observing the trail itself and any obvious peak/drop in velocity on the data sheet. Occasionally a passerby would accidentally bump a tripod that the photo gate rested upon and trigger a false trip. All of those trials were eliminated from the data set. DISCUSSION The cumulative average velocities, within each segment of the trial runs, is displayed in Table 1 for both boys and girls groups, with and without pole carry. Review of Table 1 (which visually supported in Graph 1) shows that both groups accelerate rapidly to 90% of their top speed whether carrying a pole or not. The average of all groups showed an excess of 90% of top speed within Segment 3. This third five meter segment measurement accounted for the time taken to run between 13 and 18 meters, or for familiarity, between roughly 42’ and 59’. All athletes (with the exception of one girl’s trial without carrying a pole) were still accelerating at this point and, therefore, the actual 90% of top speed mark likely occurred somewhere between 50-55’. For the jumper, whether it be long, triple, or pole vault, that would translate to roughly a 10 step approach (e.g. 5 lefts). On average, it took the athletes three more segments, 15 meters (about 50’), to accelerate the remaining 10% to top speed. That path did not necessarily follow a smooth pattern either as evidenced by , for example, the girls’ runs with the pole. The length of run needed to bring these athletes to top speed is presented in Table 2 and corresponding Graph 2. When running without a pole, 67% of the boys and 78% of the girls were at their top speed in this test by the 6th segment or likely somewhere around 100’. While carrying a pole, 60% of the boys showed their peak speed by the 6th segment whereas 88% of the girls were their fastest by this point. This may have been due to pole length and weight or the skill carrying a pole. Everyone ran slower when they carried a pole (which only makes sense) and within these two groups, on average, the “cost to top speed” of carrying the pole was 4.6% and 5.7% for girls and boys respectively. Notably, the girls ran faster carrying AUGUST 2011 techniques 11
Page 3 and 4: 2 A Letter from the President conte
Page 6 and 7: NCAA REPORT Division l Track & Fiel
Page 8 and 9: NCAA REPORT Division llI Track & Fi
Page 10 and 11: 8 techniques AUGUST 2011 KIRBY LEE
Page 14 and 15: APPROACH RUN AND ACCELERATION PATTE
Page 16 and 17: APPROACH RUN AND ACCELERATION PATTE
Page 18 and 19: COACHING YOUTHS OThe 4 guiding prin
Page 20 and 21: C OACHING YOUTHS Figure 1. Changes
Page 22 and 23: C OACHING YOUTHS Table 1. Sex Diffe
Page 24: COACHING YOUTHS Figure 5. The three
Page 27 and 28: KIRBY LEE PHOTOGRAPH WWithout adequ
Page 29: Dissociative thoughts are more prev
Page 33 and 34: esults of this study, coaches shoul
Page 35 and 36: occurs most often in the areas of c
Page 38 and 39: mental imagery By Sterling M. Rober
Page 40 and 41: MENTAL IMAGERY In addition, a quali
Page 42 and 43: MENTAL IMAGERY Additionally, more t
Page 44: MENTAL IMAGERY could affect the ima
Page 47 and 48: I’ve been coaching track and fiel
Page 49: USTFCCCA SUPPORTERS Through their o
Page 52 and 53: DIVISION I 2011 USTFCCCA OUTDOOR RE
Page 54 and 55: DIVISION II 2011 USTFCCCA OUTDOOR R
Page 56 and 57: DIVISION III 2011 USTFCCCA OUTDOOR
Page 58: IS THERE A REQUIRED MINIMUM GPA FOR

1. PAGES 1-35 - Texas Track & Field Coaches Association

Create successful ePaper yourself

Delete template?

Save as template?