As expected the POWWWER Socks tested strongest in most categories apart from recovery. The last parameter obviously suffers from power output and strength on the other parameters. Logically heart-rate (bpm), velocity (km/h) and strain increased significantly with maximum power output (watt) - all fueled by maximum energy consumption (kcal). This would be the model we recommend our athletes on race-day when it all comes down to maximizing your numbers.