Is it bad if my high jumper's plant foot lands heel first?
Sprinters are told never to land on the heel. A high jumper's plant foot has a different job, and heel first is often exactly right.
A coach who has spent years correcting heel striking in sprinters sees a high jumper plant heel first into the takeoff and assumes it is the same mistake. It usually is not. The plant foot in a high jump takeoff is not accelerating the athlete forward. It is converting the speed of the approach into height, and that is a different job with a different ideal contact.
Why the plant is not a sprint stride
A sprinter wants the shortest possible ground contact, because every extra moment on the ground is a moment not spent moving forward. A high jumper's plant wants the opposite: a longer, more controlled contact that gives the leg time to redirect the athlete's horizontal speed into vertical lift. A flat or heel-leaning contact, followed by a quick roll through the foot, does that more reliably than landing on the toes and trying to block the whole takeoff on a stiff, short contact.
When heel-first is actually a problem
- When the contact is slow and sinking rather than quick and rolling through, which bleeds speed instead of converting it.
- When the jumper's hips sit back behind the plant foot at contact, rather than arriving over it, which turns the plant into a brake.
- When the knee of the plant leg collapses inward on landing, which a heel-first contact makes more likely if the ankle and hip are not stable.
The plant foot's job is to be on the ground long enough to do its work and gone fast enough not to waste the speed that got the jumper there. Heel first, rolling quickly through to a full foot, usually does exactly that.
The Film Room's high jump setting reports hip rise, takeoff angle and knee fold from the plant onward. It does not report where on the foot contact begins, so whether a heel-first plant is working is read from hip rise and takeoff angle holding up, not from the foot strike itself.
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Related
Why does your high jumper's plant foot never land in the same spot?
A side-on camera reads the vertical arc of a jump well and has no idea where the plant foot actually landed on the ground, which is usually the real question.
Read →Why does my high jumper's plant leg buckle instead of staying firm?
The plant has to resist a sudden load almost instantly, and that is a different kind of strength from the one that lets an athlete jump high at all.
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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