The Sport Information Resource Centre
Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"
The Sport Information Resource Centre

As humans age, they lose muscle. More specifically, the number of motor units that make up each muscle are gradually reduced. However, new research suggests that long-term endurance and strength training expands the size of the remaining motor units to compensate for the decline in motor units in older age – more evidence to support the benefits of sport participation throughout the lifespan!