Why does my high jumper lean away from the bar before they even reach the plant?
Some inward lean on the curve approach is correct high jump technique, the fault is starting it too many steps out, and film shows exactly when it begins.
On the curved approach, a high jumper is supposed to lean away from the bar, the same way a sprinter leans into a bend. That part is normal and correct. The fault shows up when the lean starts too early, several steps out, instead of building through the last two or three strides.
Why early lean costs height
The lean exists to let the plant leg convert speed into rotation and lift at takeoff. Built gradually and saved for the last two steps, it sets up the plant cleanly. Started five or six steps out, the athlete spends the rest of the approach running off balance, correcting for a lean committed to too soon, and arrives at the plant with less of that lean left to spend.
What it looks like on film
- The curve rounds out early instead of holding a tight shape into the last two steps.
- The hips drift outward, away from the bar, before the plant rather than at it.
- The arms swing wide to hold balance, instead of driving to help block the takeoff.
The high jump setting in the Film Room reports hip rise as a share of body height, takeoff angle, and knee fold and extension. None of those is labelled 'lean', but comparing a jump where the lean holds until the last two steps against one where it starts early, from the same athlete on the same day, usually shows less hip rise and a flatter takeoff angle on the early-lean jump for the same effort. The lean itself is not a number the app reports, what it costs is.
Filming the full approach rather than just the plant is what catches this. A clip that starts two strides before takeoff will show a clean plant and miss the problem entirely, because by then the lean has already happened.
A camera cannot tell you whether early lean is a genuine technical fault or an athlete protecting a nervous approach, holding back rather than committing. It also cannot judge whether the curve's radius actually fits that athlete's speed. Both are calls a coach makes watching the run-up live, that the film can only support with numbers.
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Related
Should a high jumper run a J-curve or a straight approach?
The curve does part of the takeoff's job before the athlete ever leaves the ground, and a straight approach is easier to teach a beginner who has not earned that yet.
Read →How long should a high jumper's approach be?
The honest answer is set by how many strides it takes an athlete to reach a speed they can still control on the curve, not a number to copy.
Read →Why does my high jumper's plant foot point away from the bar?
A plant foot that turns away from the bar instead of pointing down the runway usually still clears, which is exactly why it goes unnoticed for seasons.
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