SECTION IV - PSYCHOLOGICAL AND SOCIOLOGICAL ASPECTS OF SPORT AND EXERCISE / RESEARCH PAPER
Oculometric Variables of Young Soccer Players
during Dribbling: A Dual-Task Study
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1
Faculty of Sport Sciences, Eskişehir Technical University, Eskişehir, Turkey.
2
Health Sciences Institute, Marmara University, Istanbul, Turkey.
Submission date: 2025-07-10
Final revision date: 2025-09-16
Acceptance date: 2026-02-18
Online publication date: 2026-07-10
Corresponding author
Gülçin Güler
Department of Physical Education and Sports Education, Faculty of Sport Sciences, Eskisehir Technical University, Turkey
KEYWORDS
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ABSTRACT
Eye movements are reliable indicators of cognitive workload associated with the visual demands of tasks. This study investigated oculometric variables (pupil diameter, fixation count, and saccades) in soccer players with different experience levels during dual-task (motor-cognitive) performances. Twenty-eight male youth soccer players were included: an elite group (n = 13) and an amateur group (n = 15). A within-subject design was used, and players completed four test protocols (P1–P4) involving dribbling with or without concurrent visual stimuli. Performance times, error counts, and oculometric data were recorded. Both groups required more time to complete protocols when visual stimuli were added (p < 0.001). The elite group completed tasks faster and with fewer mistakes than the amateur group (p < 0.05). Pupil dilation was observed across all protocols, with the largest dilation occurring in P1 (p < 0.001), although no group differences were found in pupil size changes (p > 0.05). The elite group demonstrated fewer fixations and more saccades compared to the amateur group. Fewer fixations and saccades were observed in P1 than in the other protocols (p < 0.05). Experienced players displayed more saccadic movements, possibly reflecting more efficient visual scanning strategies under cognitive load. No evidence of peripheral vision usage was found. These findings suggest experience-related differences in oculomotor behavior during complex dual-task scenarios, yet further studies are needed before practical training implications can be drawn.
REFERENCES (42)
1.
Alnæs, D., Sneve, M. H., Espeseth, T., Endestad, T., van de Pavert, S. H. P., & Laeng, B. (2014). Pupil size signals mental effort deployed during multiple object tracking and predicts brain activity in the dorsal attention network and the locus coeruleus. Journal of Vision, 14(4), 1.
https://doi.org/10.1167/14.4.1.
2.
Asadi, A., Saeedpour-Parizi, M. R., Aiken, C. A., Jahanbani, Z., Abadi, D. H. S., Simpson, T., & Marchant, D. (2022). Effects of attentional focus and cognitive load on novice dart throwing: Evidence from quiet eye duration and pupillary responses. Human Movement Science, 86, 103015.
https://doi.org/10.1016/j.humo....
3.
Ballet, C., Barreto, J., Hope, E., & Casanova, F. (2023). What is the visual behaviour and attentional effort of football players in different positions during a real 11v11 game? A pilot study. F1000Research, 12, 679.
https://doi.org/10.12688/f1000....
4.
Bekris, E., Gissis, I., Ispyrlidis, I., Mylonis, E., & Axeti, G. (2018). Combined visual and dribbling performance in young soccer players of different expertise. Research in Sports Medicine, 26(1), 43–50.
https://doi.org/10.1080/154386....
5.
Büchel, D., Gokeler, A., Heuvelmans, P., & Baumeister, J. (2022). Increased cognitive demands affect agility performance in female athletes-implications for testing and training of agility in team ball sports. Perceptual and Motor Skills, 129(4), 1074–1088.
https://doi.org/10.1177/003151....
6.
Campbell, M. J., Moran, A. P., Bargary, N., Surmon, S., Bressan, L., & Kenny, I. C. (2019). Pupillometry during golf putting: A new window on the cognitive mechanisms underlying quiet eye. Sport, Exercise, and Performance Psychology, 8(1), 53–62.
https://doi.org/10.1037/spy000....
7.
Cardoso, F. da S. L., García-Calvo, T., Patrick, T., Afonso, J., & Teoldo, I. (2021). How does cognitive effort influence the tactical behavior of soccer players? Perceptual and Motor Skills, 128(2), 851–864.
https://doi.org/10.1177/003151....
8.
Carl, J. R., & Gellman, R. S. (1987). Human Smooth Pursuit: Stimulus-Dependent Responses. Journal of Neurophysiology, 57(5), 1446–1463.
https://doi.org/10.1152/jn.198....
9.
Carnegie, E., Marchant, D., Towers, S., & Ellison, P. (2020). Beyond visual fixations and gaze behaviour. Using pupillometry to examine the mechanisms in the planning and motor performance of a golf putt. Human Movement Science, 71, 102622.
https://doi.org/10.1016/j.humo....
10.
Casanova, F., Oliveira, J., Williams, M., & Garganta, J. (2009). Expertise and perceptual-cognitive performance in soccer: a review. Revista Portuguesa de Ciencias Do Desporto, 9(1), 115–122.
https://doi.org/10.5628/rpcd.0....
11.
Evans, J. S. B. T., & Stanovich, K. E. (2013). Dual-process theories of higher cognition: Advancing the debate. Perspectives on Psychological Science, 8(3), 223–241.
https://doi.org/10.1177/174569....
12.
Fleddermann, M.-T., Heppe, H., & Zentgraf, K. (2019). Off-court generic perceptual-cognitive training in elite volleyball athletes: task-specific effects and levels of transfer. Frontiers in Psychology, 10, 1–12.
https://doi.org/10.3389/fpsyg.....
14.
Forsman, H., Gråstén, A., Blomqvist, M., Davids, K., Liukkonen, J., & Konttinen, N. (2016). Development of perceived competence, tactical skills, motivation, technical skills, and speed and agility in young soccer players. Journal of Sports Sciences, 34(14), 1311–1318.
https://doi.org/10.1080/026404....
15.
Friebe, D., Banzer, W., Giesche, F., Haser, C., Hülsdünker, T., Pfab, F., Rußmann, F., Sieland, J., Spataro, F., & Vogt, L. (2024). Effects of 6-week motor-cognitive agility training on football test performance in adult amateur players–a three-armed randomized controlled trial. Journal of Sports Science & Medicine, 23(2), 276–288.
https://doi.org/10.52082/jssm.....
16.
Gabbett, T. J., & Abernethy, B. (2012). Dual-task assessment of a sporting skill: influence of task complexity and relationship with competitive performances. Journal of Sports Sciences, 30(16), 1735–1745.
https://doi.org/10.1080/026404....
18.
Keskin, M., Ooms, K., Dogru, A. O., & De Maeyer, P. (2020). Exploring the cognitive load of expert and novice map users using EEG and eye tracking. ISPRS International Journal of Geo-Information, 9(7), 429.
https://doi.org/10.3390/ijgi90....
20.
Luis-del Campo, V., Morenas Martín, J., León Llamas, J. L., Ortega Morán, J. F., Díaz-García, J., & García-Calvo, T. (2024). Influence of the time-task constraint on ocular metrics of semi-elite soccer players. Science and Medicine in Football, 8(2), 179–186.
https://doi.org/10.1080/247339....
21.
Mahanama, B., Jayawardana, Y., Rengarajan, S., Jayawardena, G., Chukoskie, L., Snider, J., & Jayarathna, S. (2022). Eye movement and pupil measures: A review. Frontiers in Computer Science, 3, 733531.
https://doi.org/10.3389/fcomp.....
22.
Moran, A., Quinn, A., Campbell, M., Rooney, B., Brady, N., & Burke, C. (2016). Using pupillometry to evaluate attentional effort in quiet eye: A preliminary investigation. Sport, Exercise, and Performance Psychology, 5(4), 365-376.
https://doi.org/10.1037/spy000....
23.
Moreira, P. E. D., Albuquerque, M. R., Fortes, L. D. S., & Praça, G. M. (2025). How Do Cognitive and Motor Dual-Tasks during Small-Sided Games Impact the Tactical Performance of Youth Soccer Players?. Journal of Human Kinetics, 97, 249–261.
https://doi.org/10.5114/jhk/19....
24.
Moreira, P. E. D., Dieguez, G. T. de O., Bredt, S. da G. T., & Praça, G. M. (2021). The acute and chronic effects of dual-task on the motor and cognitive performances in athletes: a systematic review. International Journal of Environmental Research and Public Health, 18(4), 1–13.
https://doi.org/10.3390/ijerph....
25.
Paillard, T. H., & Noé, F. (2006). Effect of expertise and visual contribution on postural control in soccer. Scandinavian Journal of Medicine & Science in Sports, 16(5), 345–348.
https://doi.org/10.1111/j.1600....
26.
Piras, A., Pierantozzi, E., & Squatrito, S. (2014). Visual search strategy in judo fighters during the execution of the first grip. International Journal of Sports Science & Coaching, 9(1), 185–198.
https://doi.org/10.1260/1747-9....
27.
Piras, A., Timmis, M., Trofè, A., & Raffi, M. (2021). Understanding the underlying mechanisms of Quiet Eye: The role of microsaccades, small saccades and pupil-size before final movement initiation in a soccer penalty kick. European Journal of Sport Science, 21(5), 685–694.
https://doi.org/10.1080/174613....
28.
Popowczak, M., & Zwierko, T. (2025). Effects of Oculomotor Scanning on Agility Performance: Gender and a Type of Team Sport Comparison. Journal of Human Kinetics, 99, 263–274.
https://doi.org/10.5114/jhk/19....
30.
Scharfen, H.-E., & Memmert, D. (2021). Cognitive training in elite soccer players: evidence of narrow, but not broad transfer to visual and executive function. German Journal of Exercise and Sport Research, 51(2), 135–145.
https://doi.org/10.1007/s12662....
31.
Sweller, J. (1994). Cognitive load theory, learning difficulty, and instructional design. Learning and Instruction, 4(4), 295–312.
https://doi.org/10.1016/0959-4....
32.
Tao, D., Tan, H., Wang, H., Zhang, X., Qu, X., & Zhang, T. (2019). A systematic review of physiological measures of mental workload. International Journal of Environmental Research and Public Health, 16(15), 2716.
https://doi.org/10.3390/ijerph....
33.
Trecroci, A., Milanović, Z., Rossi, A., Broggi, M., Formenti, D., & Alberti, G. (2016). Agility profile in sub-elite under-11 soccer players: is SAQ training adequate to improve sprint, change of direction speed and reactive agility performance? Research in Sports Medicine, 24(4), 331–340.
https://doi.org/10.1080/154386....
34.
Vater, C., Kredel, R., & Hossner, E.-J. (2017). Disentangling vision and attention in multiple-object tracking: How crowding and collisions affect gaze anchoring and dual-task performance. Journal of Vision, 17(5), 1–13.
https://doi.org/10.1167/17.5.2....
35.
Vater, C., Luginbühl, S., & Magnaguagno, L. (2019). Testing the functionality of peripheral vision in a mixed-methods football field study. Journal of Sports Sciences, 37(24), 2789–2797.
https://doi.org/10.1080/026404....
36.
Vítor de Assis, J., Costa, V., Casanova, F., Cardoso, F., & Teoldo, I. (2021). Visual search strategy and anticipation in tactical behavior of young soccer players. Science and Medicine in Football, 5(2), 158–164.
https://doi.org/10.1080/247339....
37.
Wallman, K. E., Morton, A. R., Goodman, C., & Grove, R. (2005). Reliability of physiological, psychological, and cognitive variables in chronic fatigue syndrome. Research in Sports Medicine, 13(3), 231–241.
https://doi.org/10.1080/154386....
38.
Williams, A. M., Davids, K., & Williams, J. G. P. (1999). Visual Perception and Action in Sport. Routledge.
39.
Williams, A. M., Ford, P. R., Eccles, D. W., & Ward, P. (2011). Perceptual‐cognitive expertise in sport and its acquisition: Implications for applied cognitive psychology. Applied Cognitive Psychology, 25(3), 432–442.
https://doi.org/10.1002/acp.17....
40.
Zago, M., Piovan, A. G., Annoni, I., Ciprandi, D., Iaia, F. M., & Sforza, C. (2016). Dribbling determinants in sub-elite youth soccer players. Journal of Sports Sciences, 34(5), 411–419.
https://doi.org/10.1080/026404....
41.
Zhang, K., Chan, W. S., Lau, H. S., Huang, D., & Chow, D. H. K. (2026). The Crossover Effects of Visuomotor Task Complexity in Training Reactive Agility of Ball Sports Athletes. Journal of Human Kinetics, 100, 5–15.
https://doi.org/10.5114/jhk/21....
42.
Zurutuza, U., Castellano, J., Echeazarra, I., & Casamichana, D. (2017). Absolute and relative training load and its relation to fatigue in football. Frontiers in Psychology, 8, 878.
https://doi.org/10.3389/fpsyg.....