Bilateral deficit during maximum voluntary isometric and dynamic muscle contractions at different loads.

Abstract

Intensjonen med dette studiet var å undersøke fenomenet bilateral svekkelse (BLD) av kraft og power på ulike motstander ved å sammenligne kneekstensjon ved monolaterale (ML) og bilaterale (BL) muskelkontraksjoner. Forskjeller i variablene kraft, effekt og hastighet mellom ML og BL bevegelser, ble brukt for å evaluere en eventuell BLD. The intention of the present study was to explore the phenomenon bilateral deficit (BLD) of force and power at different loads by comparing a knee extension exercise in monolateral (ML) and bilateral (BL) muscle contractions. Differences in the variables force, power and velocity between ML and BL movements were used to evaluate a possible BLD. Six well-trained sport science students participated in the study. Each subject conducted dynamic muscle contraction at 20, 40, 60 and 80 % of their own body weight (BW), and isometric muscle contractions in both ML and BL movements.