TY - GEN
T1 - Knee Joint Kinematics During Four Functional Tests in Athletes
T2 - 48th Mexican Conference on Biomedical Engineering, CNIB 2025
AU - Martín del Campo, Samantha
AU - García, Germán
AU - González, Leonel
AU - Maldonado, María
AU - Rophie, Adel
AU - Reyes, Fernando
AU - Cuellar, Carlos
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.
PY - 2026/1/1
Y1 - 2026/1/1
N2 - This study assessed differences in knee joint range of movement (ROM) and the Leg Symmetry Index (LSI) during four tasks in healthy athletes (n = 15). We hypothesized that there would be no significant differences in the ROM and LSI of the knee in the sagittal plane in elite athletes when performing squats, lunges, single-leg landing drop, and drop vertical jump. Fifteen athletes (14 males) performed each task. Knee kinematics were recorded using a six-camera motion capture system. Seventeen reflective markers were placed bilaterally to calculate angular trajectories of the knee joint, and vectors from femur and fibula landmarks were used to quantify the ROM of the knee in a sagittal plane. Differences in ROM between the dominant leg (DML) and non-dominant leg (N-DML) were analyzed using paired t-tests, while LSI was computed as the N-DML/DML ratio. One-way ANOVA was used to compare LSI across the four tasks. Results showed no significant differences in ROM between limbs in any task (p > 0.05). LSI values were consistently close to 1.0, indicating high inter-limb symmetry. No significant variation in LSI was found between tasks (p = 0.992). These findings suggest that healthy athletes exhibit symmetrical knee ROM and LSI across diverse dynamic tasks, providing relevant benchmarks for injury prevention and functional assessment.
AB - This study assessed differences in knee joint range of movement (ROM) and the Leg Symmetry Index (LSI) during four tasks in healthy athletes (n = 15). We hypothesized that there would be no significant differences in the ROM and LSI of the knee in the sagittal plane in elite athletes when performing squats, lunges, single-leg landing drop, and drop vertical jump. Fifteen athletes (14 males) performed each task. Knee kinematics were recorded using a six-camera motion capture system. Seventeen reflective markers were placed bilaterally to calculate angular trajectories of the knee joint, and vectors from femur and fibula landmarks were used to quantify the ROM of the knee in a sagittal plane. Differences in ROM between the dominant leg (DML) and non-dominant leg (N-DML) were analyzed using paired t-tests, while LSI was computed as the N-DML/DML ratio. One-way ANOVA was used to compare LSI across the four tasks. Results showed no significant differences in ROM between limbs in any task (p > 0.05). LSI values were consistently close to 1.0, indicating high inter-limb symmetry. No significant variation in LSI was found between tasks (p = 0.992). These findings suggest that healthy athletes exhibit symmetrical knee ROM and LSI across diverse dynamic tasks, providing relevant benchmarks for injury prevention and functional assessment.
KW - drop vertical jump
KW - healthy athletes
KW - knee kinematics
KW - limb symmetry index
KW - lunges
KW - range of motion
KW - single-leg landing drop
KW - squats
UR - https://www.scopus.com/pages/publications/105028282430
U2 - 10.1007/978-3-032-13722-7_14
DO - 10.1007/978-3-032-13722-7_14
M3 - Contribución a la conferencia
AN - SCOPUS:105028282430
SN - 9783032137210
T3 - IFMBE Proceedings
SP - 123
EP - 131
BT - XLVIII Mexican Conference on Biomedical Engineering - Proceedings of CNIB 2025, Volume 2
A2 - Zuñiga-Aguilar, Esmeralda
A2 - Benítez-Mata, Balam
A2 - Reyes-Lagos, Jose Javier
A2 - Hernandez Acosta, Humiko Yahaira
A2 - Botello Arredondo, Adeodato Israel
A2 - Bayareh Mancilla, Rafael
A2 - Vázquez de la Rosa, Jaime Fabian
A2 - Gutiérrez Valenzuela, Cindy Alejandra
PB - Springer Science and Business Media Deutschland GmbH
Y2 - 11 September 2025 through 13 September 2025
ER -