| dc.description.abstract | High-intensity efforts involving eccentric muscle actions are common source of
delayed-onset muscle soreness (DOMS). A DOMS condition can impair, even
in a transitory way, force production, range of motion, muscle and joint stiffness,
and comfort during movement performance. In runners, these effects could alter
running kinematics, impairing performance, and/or increasing the presence of
risk factors for injuries. Since regenerative training sessions are common on
days following a high-intensity effort. In this study, we investigate whether there
are delayed effects of a simulated half-marathon competition on the threedimensional (3D) running kinematics. The study included 15 runners (11 men, 4
women) with competitive experience and mean ± standard deviation age of 36
years ± 9 years old. They ran a half-marathon to achieve their personal best
time. Pre and post the running they were submitted to evaluations involving
anamnesis about sports practice, anthropometric measurements, responses to
effort scales, perceived recovery, pressure pain threshold, and a 3D kinematic
evaluation of running on a treadmill. During the half-marathon, relative air
humidity and wind speed, total distance, elevation, finish time, speed, effort
perception and heart rate were monitored. According to our results, we interpret
that the demand for high-intensity exercise in a half-marathon causes muscle
damage, reflected in the presence of delayed muscle soreness, evidenced by
the greater sensitivity noted in the pain thresholds due to pressure in
musculature. Regarding the 3D running kinematics, we observed that after the
half-marathon, some pre-existing characteristics in the running technique are
accentuated, such as asymmetries in the lower limbs, greater range of motion
and asymmetry in trunk movement and longer contact times. In conclusion,
after running a half-marathon and experiencing DOMS indicating muscle
damage, runners change their running technique some movement profiles that
might indicate negative effects on performance and injury risk factors can be
accentuated. | |
