Biomechanical Analysis of the Breaststroke Kick in Young Swimmers Using Wearable Inertial Sensors: An Exploratory...

Area of Science:

• Sports Biomechanics
• Human Movement Science
• Wearable Technology

Background:

• Breaststroke performance relies heavily on lower-limb biomechanics and kick coordination.
• Wearable inertial sensor technology offers objective analysis of motion in training settings.

Purpose of the Study:

• To evaluate the feasibility of using wearable inertial sensors for biomechanical analysis of the breaststroke kick in young swimmers.
• To assess the impact of sensor-assisted feedback on breaststroke kick technique and performance.

Main Methods:

• An exploratory pilot study involved five male swimmers (8-10 years) over three months.
• Lower-limb motion was tracked using bilateral inertial measurement units (IMUs) on shanks and feet.
• Intervention included five training sessions with drill-based exercises and IMU-assisted feedback.

Main Results:

• Improvements were noted in time-based swimming performance (40m kick, 40m swim).
• Qualitative biomechanical evaluations and technique scores assigned by evaluators increased.
• Selected IMU-derived kinematic variables, like ankle dorsiflexion and foot rotation, provided quantitative insights.

Conclusions:

• Wearable IMUs are feasible for monitoring breaststroke kick technique and quantifying mechanics in young swimmers.
• Sensor-assisted feedback shows potential for improving swimming performance and technique.
• Larger controlled studies are needed to confirm efficacy.