Effects of ergonomic clip-on handles on upper-body vibration transmissibility and muscular activity during pedalling with vibrations

Mountain bikers often report impaired finger sensitivity caused by mechanical vibrations and misalignment between the wrist forearm when using traditional (cylindrical) handles. The aim of this study was to evaluate acute effects ergonomic clip-on handles that allowed hand rest on medial carpal bone, muscular activity, vibration transmissibility cycle ergometer body segments, handgrip strength. Sixteen cyclists performed two pedalling exercises at ~200 W lasting 20 minutes a delivered under fork (vertical amplitude: 4-25 mm; frequency: 4-17 Hz) whilst cylindrical with randomized order. Compared handles, decreased significantly extensor digitorum, triceps brachii flexor carpi radialis muscles 10, 10 7%, respectively. surface electromyography activity 45%, while increased 12% (both significantly). Unlike did not involve significant decrease in maximal force after exercise. clip-o may prevent symptoms hand-arm syndrome mountain could preserve their ability effectively manoeuvre brake bike.