Why you stand up too early out of the blocks
Standing up does not slow you down on the spot. It ends your acceleration early, and that is the part nobody feels.
Coaches describe this one the same way every time. The first two steps look right, something goes wrong in the middle, and by fifteen metres the athlete is running normally without ever really having accelerated.
What standing up early actually costs
Acceleration is a horizontal problem. Leaving the blocks, the body wants to be close to one long line from the back ankle through the hips to the head, and it wants to stay nearer that line than to upright for the first several steps. Coming upright does not brake the athlete on the spot. It ends the phase in which they can still push the ground backwards, so top speed arrives earlier and lower than it should have.
That is why it goes uncorrected for years. There is no moment that feels bad. The race just settles sooner than it needs to.
Where it comes from
- Block settings that sit the hips too high, so the first push is already going upwards.
- A first step that reaches out in front of the body. Anything landing ahead of the hips is a brake, and braking pulls the athlete upright.
- Eyes. The head follows the eyes and the trunk follows the head, so an athlete looking down the track at ten metres is standing up at four.
- Nothing to hold the position with. A trunk and hips that tire immediately will always default to the posture the athlete can actually maintain.
What the camera can tell you
In the Film Room, the block start is its own event and it reads the first six steps. It reports the drive-phase trunk lean and whether you stand up early, whether the hips climb instead of driving out, and back-leg extension at clearance.
The hips are the number worth having. An athlete can hold a convincing lean and still pop the hips up on every step, and from the side of the track at full speed nobody sees it. A hip trace across six steps is not a matter of opinion, and it is the same trace next Tuesday, which is what makes it useful for judging whether a change worked.
What to do on Tuesday
Wall drives with a three-count hold, because a position held still is a position that can be corrected. Falling starts into ten metres, because there is no way to pop upright out of a fall and stay on your feet. Sled or partner-resisted pushes, because resistance keeps the hips down without the athlete having to think about keeping them down. The app names these when the numbers say the position broke, but they are the standard remedies and they work whether or not anybody filmed anything.
One side-on camera sees posture and nothing else. It cannot see your block settings, where the feet are in the blocks, or whether the athlete pushes evenly with both legs. Those are still measured with a tape and watched from the front.
Time your next meet with the phones you already have
Timing, the Film Room and the speed gates are free forever, with no account. A Club plan, $71 a month, puts your meets on your own results page, and one plan covers every phone.
Related
Why your sprinter's back leg never fully extends out of the blocks
The rear leg is supposed to finish straight at clearance, and when it does not, the fix is almost never in the leg itself.
Read →How far apart should you set the blocks?
Bunch, medium and elongated block settings are not a matter of taste, they trade power against time, and most blocks on a track are set the way they have always been set.
Read →Why your sprinter's first step out of the blocks goes nowhere
A short, flat first step usually means the front leg never got the chance to push, not that the athlete is slow off the gun.
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