The physics of how Olympic weightlifters use the barbell “whip”.

Exactly what makes the best barbells is still a mystery. Olympic bells have the same weight, diameter, and height, but some aspects may differ from brand to brand, such as the materials used. Most are made of some type of steel, with stainless steel and chrome plating being the most common, and the mechanical appearance can make little difference to the bar’s whip, according to Langlois. In particular, the stiffness of the bar (The Young’s modulus) can vary slightly. “We don’t feel good about it because none of the barbell manufacturers will tell you how they make the bar,” he said. “Everything belongs to the owner.”

There can also be differences in the alignment between the shaft (where you hold the bar) and the arms (where you hold the plates), which can affect the number of bars. Arms can be bearing (with internal moving parts for quick adjustment), bushing (hard fixed piece), hybrid of two, or bare metal. Barbell manufacturers advises slow overhead lifts, weights and handstands for quick Olympic lifts. “The connection method varies from center to center bushbreasts, or bare metal,” said Langlois.

So what’s next? “We know this place is important,” Langlois said. “We know it changes shape, it changes frequency, and load. So now we’re going to take data with real Olympic weightlifters (men and women) to see how they use the whip and what the bar needs for them.”