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Why does my high jumper clear more in practice than at meets?

The approach that works in an empty gym still has to survive a full runway, a crowd and only three attempts that count.

The bar goes up in practice and the athlete clears it clean, relaxed, three times in a row. Two days later at a meet, the same height gets missed twice and scraped over on the third. Nothing about the athlete's fitness changed in two days.

Practice removes exactly the parts that make a meet hard

A practice attempt usually comes after a long warm-up, on a familiar runway, with no line of other jumpers waiting, and with the freedom to reset and try again if the approach feels wrong. A meet attempt comes after standing around for twenty minutes between jumps, on a runway the athlete may never have used before, in front of people, with three attempts total and a clock on how long they can take. The technique has not changed. The conditions producing it have.

Where it actually shows up

• A rushed last few strides, because the athlete feels the clock or the crowd and speeds up the approach without meaning to.
• A shortened or lengthened run-up, because the mark that worked on the practice runway does not feel right on an unfamiliar one.
• A tentative takeoff, because the athlete is protecting against a miss rather than committing to a clearance.

All three are the same approach breaking down under different pressure, not a different fault showing up out of nowhere.

What film can catch here, and what it cannot

The high jump setting reports hip rise as a share of body height, takeoff angle, and knee fold and extension, and filming a meet warm-up jump against a practice jump from the same spot will show plainly whether the approach and plant actually changed between the two. If the numbers hold steady and the misses still happen, the issue is not technique breaking down. It is technique holding up under a plan that never accounted for meet conditions, which means rehearsing the wait, the crowd and the single attempt is the training that is missing, not more reps at the bar.

A camera cannot measure nerves, adrenaline, or how a first attempt at a new venue feels different from the twentieth attempt at a home pit. It can only compare the two approaches on the numbers. Reading the gap between what the film says and what the athlete says happened is still a coaching judgment, not something the app makes for you.

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Try it: Track and field timing app for meets: gun, finish camera, results