PhD Scientific Days 2026

Health Sciences 2.

Kinematic Asymmetries and Responses During Exercise Testing in Youth Basketball Players: An Integrated Assessment of Motion Capture and Performance

Előadó neve

Katrics, Petra, MSc

Neptune code

Z5VOJL

Előadó munkahelye

Heart and Vascular Center, Semmelweis University

Előadó telefonszáma

+36305534619

Előadó e-mail címe

petra.katrics@gmail.com

Az előadás címe

Kinematic Asymmetries and Responses During Exercise Testing in Youth Basketball Players: An Integrated Assessment of Motion Capture and Performance

Szerző(k) neve és munkahelye

Petra Katrics¹, Attila Schulc¹, Dr. Emese Csulak¹, Krisztina Kornis², Petra Márton¹, Prof. Dr. Béla Merkely^1,2, Dr. Nóra Sydó^1,2, Dr. Gergő Merkely^2,3

1: Heart and Vascular Center, Semmelweis University
2: Department of Sports Medicine, Semmelweis University
3: Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston

Bemutatás módja

Szóbeli

Szekció

Health Sciences 2.

Language of the presentation

English

Preferred session

Health Sciences

Összefoglaló szövege

Introduction
Incremental treadmill testing is widely used to assess physiological fatigue, especially around the anaerobic threshold (AT), but its biomechanical effects are less understood. Fatigue alters running mechanics and may increase injury risk. However, isolating fatigue-specific changes remains challenging. Bilateral gait asymmetry may serve as an early marker of neuromuscular fatigue.

Aim
To identify fatigue-related movement changes, examine their association with physiological load, and determine whether fatigue amplifies bilateral asymmetry.

Methods
Thirty-four male basketball players (16.6 ± 1.7 years) performed an incremental treadmill test at constant speed (10 km/h) until exhaustion. Respiratory, cardiovascular, and lactate data were collected, and AT was determined using ventilatory and lactate criteria. Full-body 3D motion capture (12 cameras, 64 markers) recorded running mechanics. Gait cycles were time-normalized, and kinematic variables extracted. Bilateral asymmetry was quantified using an area-under-the-curve (AUC) approach based on left–right differences. Statistical analysis included paired t-tests, repeated-measures ANOVA, and Pearson correlations. Data interpretation was performed at both the population and individual levels.

Results
At the population level, asymmetry increased across multiple movement variables. The most pronounced and consistent changes were observed in pelvis–trunk kinematics in the sagittal plane, which also showed the strongest associations with physiological load. These asymmetry alterations appeared predominantly after the anaerobic threshold. Despite clear population-level trends, several kinematic variables showed inconsistent responses with substantial inter-individual variability.

Conclusion
Bilateral gait asymmetry appears to be a relevant biomechanical marker of fatigue during incremental running, particularly at the population level. Integrating motion capture with physiological data enables the identification of fatigue-related changes and supports individualized monitoring, with potential applications in injury prevention and performance optimization.

Funding Statement
Supported by the Hungarian Ministry of Innovation and Technology through the National Research, Development and Innovation Fund (Project No. 2020-2.1.1-ED-2024-00353).

University

Semmelweis University

Supervisor

Dr. Gergő Merkely

Publication of my abstract

I do not give consent to the publication of my abstract on the website of the congress.

phd.section.field

in doctoral studies after complex exam (PhD)

Kind

Szabad

Status

elfogadva

Accepted presentation method

szóbeli

Előadás fájl jóváhagyás

nem hagyta jóvá

Előadó

9773

Start

17:15

End

17:25