Is It Possible to Individualize Intensity of Eccentric Cycling Exercise From Perceived Exertion on Concentric Test?

Abstract: Objective: To assess the safety and acute effects of a procedure using perceived exertion during a prior submaximal concentric (CON) test to individualize eccentric (ECC) cycling exercise intensity.Design: Prospective, monocentric open study.Setting: Technological investigation platform at a physical medicine and rehabilitation department in a university hospital.Participants: Healthy subjects (N=18; 15 men, 3 women) aged between 22 and 37 years.Interventions: The subjects performed 3 cycling exercises: (1) incremental CON test to determine the comfortable pedaling power (CPP) corresponding to a Borg scale rating of 12 (rate of perceived exertion); (2) steady-state CON exercise at the CPP workload to determine the corresponding plantar pressure; and (3) steady-state ECC exercise with an imposed resistance corresponding to the CPP plantar pressure.Main Outcome Measures: Rate of perceived exertion on Borg scale, oxygen uptake (), heart rate, cardiac output, and stroke volume using inert gas rebreathing techniques were measured during steady-state CON and ECC exercises. Muscle soreness was rated on a visual analog scale immediately, 24, and 48 hours after the tests.Results: No adverse effects were reported. was about 5 times the resting value during CON exercise, while it was twice that during ECC exercise. Cardiac output was lower during ECC exercise (P
Source: Archives of Physical Medicine and Rehabilitation - Category: Rehabilitation Authors: Tags: Original Articles Source Type: research