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Shoulder injuries in soccer goalkeepers: review and development of a FIFA 11+ shoulder injury prevention program

Authors Ejnisman B, Barbosa G, Andreoli CV, de Castro Pochini A, Lobo T, Zogaib R, Cohen M, Bizzini M, Dvorak J

Received 9 October 2015

Accepted for publication 26 February 2016

Published 8 August 2016 Volume 2016:7 Pages 75—80

DOI https://doi.org/10.2147/OAJSM.S97917

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Prof. Dr. Andreas Imhoff


Benno Ejnisman,1 Gisele Barbosa,1 Carlos V Andreoli,1 A de Castro Pochini,1 Thiago Lobo,2 Rodrigo Zogaib,2 Moises Cohen,1 Mario Bizzini,3 Jiri Dvorak3

1Department of Orthopaedics, Federal University of São Paulo, 2Sports Medicine Department, Santos FC, São Paulo, Brazil; 3FIFA-Medical Assessment and Research Centre, Schulthess Clinic, Zurich, Switzerland

Abstract: In the last years, shoulder injuries have represented an increasing health problem in soccer players. The goalkeepers are more exposed to shoulder disorders than other field players. Injury prevention exercises for upper limbs were cited in few studies involving throwing athletes, but we know that goalkeepers need a specific program. The purpose of this study is to describe the development of an adapted Fédération Internationale de Football Association (FIFA) 11+ program, namely the FIFA 11+ shoulder, which targets the prevention of shoulder injuries in soccer goalkeepers. The FIFA 11+ shoulder program is structured into three parts: general warming-up exercises, exercises to improve strength and balance of the shoulder, elbow, wrist, and finger muscles, and advanced exercises for core stability and muscle control. The exercises were selected based on recommendations from studies demonstrating high electromyographic activity.

Keywords: goalkeeper, shoulder, injury prevention, prevention program

Introduction

Soccer is the most popular sport worldwide, and participation in this sport can be associated with injuries.1 On average, an elite soccer player suffers from 1.5 to 7.6 injuries each 1,000 hours of training and 12 to 35 injuries each 1,000 hours of match.2,3 Kirkendall and Dvorak4 reported that the most common injured site was the lower limb (67.7%), followed by the upper limb (13.4%).

In the last years, shoulder injuries have represented an increasing health problem in soccer players.5 The modern soccer has been characterized by high speed, pressing, and marking.5 Many researchers have reported that goalkeepers are more exposed to upper limb lesion than other field soccer players.6,7

The percentage of shoulder damage that occurred during Athens 2004 and EURO 2004 was 3.8% and 4.4%, respectively.8 Junge et al9 reported shoulder injuries between 2% and 13% during a 4-year period (from 1998 to 2001) of international tournaments. The Fédération Internationale de Football Association (FIFA) collected data during Japan/Korea World Cup (2002) and Germany World Cup (2006) and reported higher percentages of upper extremity injury (4.6% and 8.2%, respectively).

A third of shoulder injuries (28%) sustained by professional soccer players are severe because of which participation in training and games is stopped for ≥28 days.10 In a study of the UEFA European Championships, a total of 34 severe injuries were recorded, two of which were shoulder dislocation.11 Hart and Funk12 reported that a previous shoulder injury is a significant risk factor of more or repeated injuries than other soccer injuries in general. A majority of serious soccer shoulder injuries affect the glenoid labrum (84%), and a smaller number are labral injuries with associated rotator cuff involvement (8%). A minority (8%) are isolated rotator cuff injuries.

Prevention of soccer injuries: what about the upper extremity?

Since the launch of FIFA 11+, key publications have confirmed the preventive effects of the program and have evaluated its performance-improving effects in female as well as male amateur soccer players.13 Considerable reductions in the number of injured players, ranging between 30% and 70%, have been observed among the teams that implemented the FIFA 11+ program.14 This program has been mainly developed to prevent lower limb injuries – there is no specific program in the current literature to prevent upper limb lesions in soccer players.

Wilk et al15 developed the Advanced Throwers Ten Exercise Program. This program consists of exercises that restore muscle balance and symmetry in the overhead throwing athlete, which is necessary for the symptom-free return to sports after lesion. Injury prevention exercises for upper limbs are cited in few studies involving throwing athletes,16,17 but we know that soccer goalkeepers need a specific program.

McCall et al18 cited that the “five” most common injury risk-screening tests used by national soccer teams were the evaluation of flexibility (dynamic and static), physical fitness, joint mobility, balance/proprioception, and muscle endurance and peak strength. In the same study, the authors reported the exercise-based injury prevention strategies that were not specific for upper or lower limb injuries. The key preventive exercises used by national teams were similar to those reported for premier league clubs, albeit in a slightly different order of importance.18 For example, core, balance/proprioception, and eccentric exercises also feature in the “Top five” of national teams’ exercises. At the time of this review, there was no direct scientific evidence that core exercises can reduce injury risk in top-level soccer players, although evidence from other sports suggests some preventive capacity.19

Despite being supported for shoulder rehabilitation by some studies, eccentric exercise has a weak level of evidence in the scientific literature20 as it cannot be ascertained whether its beneficial effects on injury are specifically from the eccentric component.21,22 Finally, while flexibility is an important exercise for practitioners, two systematic reviews23,24 have shown that there is no conclusive evidence to support stretching to prevent injuries. Both reviews, however, also highlight that there is no sufficient reason to discontinue flexibility exercises in the training program.

The aim of this paper is to describe the development of an adapted FIFA 11+ program, namely the FIFA 11+ shoulder (FIFA 11+S), which targets the prevention of shoulder injuries in soccer goalkeepers.

Development of the FIFA 11+S program

The FIFA 11+S program is structured into sections according to the FIFA 11+ program already successfully used to prevent lesions.25 The exercises were selected based on recommendations from studies demonstrating high electromyographic activity,2632 including additional exercises to provide variation and progression.

The program was developed by an international group of experts, including orthopedics expert in shoulder lesions, physiotherapists with experience in soccer lesion, and specialists in sports rehabilitation. For all the exercises, correct performance is of great importance. Therefore, the coach should supervise the program and correct the players if necessary.

The program consists of three parts: general warming-up exercises (part I), exercises to develop strength and balance of the shoulder, elbow, wrist, and finger muscles (part II), and advanced exercises for core stability and muscle control (part III). The FIFA 11+S takes ~20–25 minutes to complete and replaces the usual warm-up before training (Figure 1). All exercises focus on core stability, neuromuscular control, eccentric rotator strength, and agility.

Figure 1 The FIFA 11+ shoulder injury prevention program.
Notes: *Part I should be performed for 7 minutes. **Part II should be performed in 9–10 minutes at 3 sets of 15 repetitions. Exercises should be changed according to the tolerance of the athlete (to A for B and C exercises). ***Part III, the athlete must do the exercises at high velocities with 5 or 6 sets of 15 to 20 repetitions, not exceeding 9–10 minutes.

These exercises should be performed three times per week and should be added to the training taken by the soccer goalkeeper. Part I exercises should be done for 7 minutes as a general warm-up. Part II exercises should be performed for 9–10 minutes in a low-resistance (light tubing strength or 2–3 kg), high-repetition format (three sets of 15–20 repetitions), in order to improve strength and local muscular endurance.33 Exercise should be changed according to the tolerance of the athlete (to A instead of B and C exercises, Figure 1). In part III, the athlete must do the exercises at high velocities with five or six sets of 15–20 repetitions not exceeding 9–10 minutes; these exercises are performed to increase local muscular endurance.33

The emphasis is given to the strengthening of some muscle groups such as the shoulder rotator cuff. The external and internal concentric rotation power balance ratio must be maintained between 0.6 and 0.8.34 Regarding athletes with instability, Ellenbecker and Davies35 suggested as a preventive measure an increase of 10% in the normal strength relation (from 66% to 76%), altering the rotator’s relation from 2/3 to 3/4. Internal rotator is an important component of the throwing movement; on the other hand, the antagonist (external rotator) must be strong enough to decelerate the throwing movement and to stop the ball when grabbing it.

Other important muscles that should be focused on are the anterior serratus and lower and medium trapezium to prevent the scapular dyskinesia. The power of these muscles and superior trapezium keeps the correct scapulohumeral rhythm.32,3639

Open kinetic chain exercises with ball-throwing movements are included, in addition to closed kinetic chain exercises that simulate falls and movements on the ground. In both cases, the CORE activation is needed to maintain the correct muscular activation sequence, and transfer and dissipate energy in the kinetic chain.29,40

The diagonal exercises are used to strengthen the muscles. The diagonal D1 in the flexor pattern (acceleration) and extension (deceleration) activates the rotator cuff, scapular waist, and deltoid muscles, which is important to improve the co-activation of the intra-articular power couples.37,41

The sensory-motor training is an important part of the program. The lack of shoulder stability increases the need of the sensory-motor system for neuromuscular control. The feed forward and feedback mechanisms are considered as critical points of the kinetic chain, making their training extremely important for the prevention of lesions.42

Plyometric training is also included, which facilitates the increase of excitability of the neural system and the reactive capacity of the neuromuscular system of healthy athletes’ shoulders. This training includes the eccentric movement that produces elastic energy and transforms this accumulated energy into kinetic energy which is transferred to the concentric phase using the shortening–strengthening cycle.3032,43

Conclusion and future perspectives

We would like to recommend scientists and clinicians to also consider researching upper extremity injury in soccer goalkeepers. Considering favorable results from the previously published research on FIFA 11+ with soccer athletes, we hypothesize the following benefits of FIFA 11+S: fewer injuries, fewer costs, and better performance by soccer goalkeepers.

One of the strengths of this study is the type of athletes involved, who have not been discussed in the literature, considering the difficulties in obtaining a program specific for goalkeepers. The lack of results about the use of this preventive program is the limitation of this paper.

Future research should investigate the effects of FIFA 11+S to prevent injuries of the upper limbs and improve performance of the soccer goalkeepers.

Disclosure

The authors report no conflicts of interest in this work.


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