What is the Sayers equation for jump power?

Sayers et al. (1999): Peak Power (W) = 60.7 × jump height (cm) + 45.3 × body mass (kg) − 2055. For a 75 kg athlete jumping 45 cm: PP = 60.7 × 45 + 45.3 × 75 − 2055 = 2,731.5 + 3,397.5 − 2055 = 4,074 W.

Why is the CMJ preferred over the squat jump for power assessment?

The countermovement (eccentric pre-load) increases power output by 10–15% versus no countermovement, thanks to stretch-shortening cycle contribution and elastic energy storage in the tendons and muscles.

Countermovement Jump Power Calculator

Estimate peak power from countermovement jump height using the Sayers equation and validated regression models. Compare to normative data for strength and conditioning.

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Frequently Asked Questions

What is the Sayers equation for jump power?

Why is the CMJ preferred over the squat jump for power assessment?