This study evaluated the acute effects of two low-intensity front crawl training conditions on swimming kinematics in adolescent swimmers. After a standardized warm-up, participants performed either low-intensity tethered front crawl or low-intensity free-swimming front crawl. Kinematic measurements were obtained immediately after task completion using an accelerometer. One week later, the final exercise condition was rotated between groups so that both groups completed both training conditions.
This study investigated the effects of two low-intensity front crawl training conditions on swimming kinematics in adolescent swimmers. All participants completed the same standardized warm-up protocol. After the warm-up, Group A performed 6 × 10 cycles of low-intensity tethered front crawl with 10-second rest intervals between sets, while Group B performed 6 × 50 m of low-intensity front crawl starting every 60 seconds. During both exercise conditions, participants were instructed to focus on stroke length and correct body position in the water.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
32
Participants performed 6 × 10 cycles of low-intensity front crawl while tethered, with 10-second rest intervals between sets. During the exercise, participants were instructed to focus on stroke length and correct body position in the water.
Participants performed 6 × 50 m of low-intensity front crawl, starting every 60 seconds. During the exercise, participants were instructed to focus on stroke length and correct body position in the water.
Swimming Pool at Koncertowa 4
Warsaw, Masovian Voivodeship, Poland
Front Crawl Kinematic Variables Measured by Accelerometer
ront crawl kinematic variables were assessed with an accelerometer during each 50 m front crawl trial performed after the assigned exercise condition. Variables included body roll (maximum angular velocity around the vertical axis \[ωmaxR\] and maximum pelvic tilt angle around the vertical axis \[AmaxR\]), yaw rotation (maximum angular velocity around the sagittal axis \[ωmaxY\] and acceleration along the transverse axis \[atmax\]), pitch rotation (maximum angular velocity around the transverse axis \[ωmaxP\] and acceleration along the sagittal axis \[asmax\]), and progressive movement (maximum acceleration along the vertical axis \[avmax\]).
Time frame: Baseline and 1 week
Time to Achieve 50 m
Time required to complete 50 m front crawl, expressed in seconds.
Time frame: Baseline and 1 week
Stroke Length
Stroke length during front crawl, expressed in meters.
Time frame: Baseline and 1 week
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