Does Restricted Ankle Joint Mobility Influence Hamstring Muscle Strength, Work and Power in Football Players after ACL Reconstruction and Non-Injured Players?

Author:

Oleksy Łukasz12ORCID,Mika Anna3ORCID,Kuchciak Maciej4ORCID,Bril Grzegorz5,Kielnar Renata6,Adamska Olga7ORCID,Wolański Paweł8ORCID,Deszczyński Michał7

Affiliation:

1. Faculty of Health Sciences, Department of Physiotherapy, Jagiellonian University Medical College, 31-008 Kraków, Poland

2. Oleksy Medical & Sport Sciences, 37-100 Łańcut, Poland

3. Institute of Clinical Rehabilitation, University of Physical Education in Kraków, 31-571 Kraków, Poland

4. Department of Physical Education, University of Rzeszów, 35-959 Rzeszów, Poland

5. Physiotherapy and Sports Centre, Rzeszów University of Technology, 35-959 Rzeszów, Poland

6. Institute of Health Sciences, Medical College of Rzeszów University, 35-315 Rzeszów, Poland

7. Department of Orthopaedics and Rehabilitation, Medical Faculty, Medical University of Warsaw, 02-091 Warsaw, Poland

8. Department of Physiology, Gdańsk University of Physical Education and Sport, 80-336 Gdańsk, Poland

Abstract

This study was aimed at observing how the limitation of ankle dorsiflexion ROM affects hamstring muscle Peak Torque/BW (%), Average Power (W), and Total Work (J), and whether this effect is similar in football players after ACL rupture and reconstruction and in those without injuries. The study included 47 professional football players who were divided into two groups: Group 1 (n = 24) after ACL reconstruction and Group 2 (n = 23) without injuries in the past 3 years. Based on the Weight-Bearing Lunge Test (WBLT), the following subgroups in Groups 1 and 2 were distinguished: N (normal ankle joint dorsiflexion) and R (restricted ankle joint dorsiflexion). The concentric isokinetic test (10 knee flexions and extensions at 60°/s) was performed on both limbs. Significantly lower values of Peak Torque/BW and Average Power were observed in Group 1 compared to Group 2, as well as in subjects with normal and restricted ankle dorsiflexion. However, no significant differences were noted for either group in any of the strength variables comparing subjects with normal and restricted ankle dorsiflexion. A poor and non-significant correlation was exhibited between the ankle joint range of dorsiflexion and all the strength variables. The area under the ROC curve (AUC) for all the evaluated variables in both groups was below 0.5, or very close to this value, indicating that ankle dorsiflexion ROM has no diagnostic accuracy for hamstring muscle strength. Based on the obtained results, it can be assumed that ankle dorsiflexion limitation, which is common in football players, is not a factor in weakening hamstring muscle strength, either in football players after ACL reconstruction or among those without injuries. However, some authors have reported that limited mobility of the ankle joint can have a destructive effect on the work of the lower limbs and may also be a factor in increasing the risk of football injuries in this area. Therefore, we have suggested that hamstring muscle weakness and increased risk of injury may occur due to factors other than limited ankle mobility. These observations may be of great importance in the selection of prevention methods by including a broad spectrum of physical techniques, not just exercises that focus on the improvement of mobility or stability of the lower limbs.

Publisher

MDPI AG

Subject

General Medicine

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