Healthy Clinical Trial
Official title:
Changes of Biomechanical Parameters During Race Simulation Rowing - The Effect of (In)Stability of the Simulator
Rowing simulators are frequently used by rowers, when on-water training is impossible or
limited. While such devices are highly valuable to maintain rowers` fitness, a concern was
raised about extensive simulator usage. It was postulated that it could lead to technique
alterations due to different biomechanical properties compared to on-water rowing.
Slide-based rowing simulators were designed to better simulate on-water conditions.
The main aim of the study was to compare the differences in various kinematic and kinetic
parameters during a short (20 s) all-out rowing bout and during a 2000-m simulated race, to
get a better insight into how different rowing simulator designs affect biomechanics of
rowing.
Three different rowing simulators were used in this study: (1) a standard stable/fixed rowing
simulator, (2) a slides based rowing simulator, i.e. horizontal plane unstable, and (3) a
tilt board based rowing simulator; i.e. frontal plane unstable.
The investigators hypothesised that rowing on different simulators will elicit different
biomechanics, including forces, power output, arm and seat movement velocity and amplitude.
Each of the participants completed the tests in all three interventions on separate sessions;
random order of interventions. The three sessions took place 7-10 days apart. During each
session, the participants completed the all-out 20-s trial first, then the simulated 2000-m
race. The aforementioned biomechanical parameters were tracked throughout the trials to be
compared between interventions later.
The measurements will take place at University of Primorska (Koper, Slovenia) and the
subjects will be recruited in close collaboration with Rowing Club Piran. Crossover study
design will be used. Each participant will be asked to come for three visits that will be
scheduled 7-10 days apart. Prior to measurements onset, the whole protocol will be explained
to the participant.
Measurement procedure:
- 15-min warm-up
- 20-s maximal (all-out) rowing
- 5-minute break
- 2000-m simulated race
After both trials, blood lactate will be measured. Blood sample will be taken at the the
earlobe by a qualified medical personnel.
Maximal performance test: The participant will perform a 20-s interval with maximal effort.
The main aim of the measurement is to record the maximal exerted force and power. The custom
adapted device (Concept 2 Rowing Simulator) records the positions (seat and handle) and force
(legs push and handle pull), which enables for further calculations of segmental and common
kinematics and dynamics parameters.
Race simulation: the participant will complete the 2000-m simulated race and will be
instructed to aim for the best results. The same measurements as in the maximal performance
test will be performed. Wireless heart rate monitor will be used to record the heart
frequency throughout the trial.
Equipment:
The custom adapted rowing simulator (Concept 2) allows for the measurements of stoke forces
and consequently power outputs, seat and handle velocity, and seat and handle amplitudes.
Signals will be transferred to central unit, amplified and converted, and stored on a
personal computer.
The interventions (i.e. the studied rowing conditions) will be as follows:
- a standard stable/fixed rowing simulator,
- a slides based rowing simulator, i.e. horizontal plane unstable, and
- a tilt board based rowing simulator; i.e. frontal plane unstable.
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