Do 1940s spring shoes actually make you jump higher as advertised?

The 1940s spring shoes were designed to enhance jumping ability by using compressive springs that store energy when the foot hits the ground and release it during push-off. However, when put to the test in real-world conditions, these vintage shoes failed to deliver on their marketing promises. The testing revealed that despite the theoretical mechanics behind the spring compression system, the shoes did not provide the advertised jump height enhancement and actually posed safety risks such as potential ankle twisting, demonstrating how past marketing hype often oversold the actual capabilities of innovative products.