03/27/2026
When I was first getting trained as a Fitness Professional back in 2003 I learned the specifics of actually doing a repetition.
I was taught by Dr. Jack Barnathan, then Education Director of the ISSA (International Sports Sciences Association), to move the weight as quickly as possible UNDER COMPLETE CONTROL. Form and technique must be pristine (the 1st R of the 5 R's, Range of Motion).
I've been teaching this to my clients ever since.
And after all theses years, new research suggests that lighter loads (think 30–40% of your max effort) moved with the intention of moving as fast as possible can be as effective, or even better, for developing power than heavy, slow lifting. What matters most is the intent. Even if your actual movement speed is limited, trying to move explosively still trains your neuromuscular system to produce force more quickly.
This matters because muscle power declines faster with age than strength does, and it's what you rely on every time you react quickly, stabilize yourself, or move dynamically. Having adequate power can help you avoid falls, recover your balance, and move with more confidence, which translates into a lower risk of injuries and chronic diseases.
If you want to age well, you have to move like you mean it.