Gamification has rapidly emerged as one of the favorite persuasive technologies widely used with the aim of promoting a positive change in the user's behavior by means of including game-like elements in non-game contexts. As a research discipline, gamification is growing fast, maturing from basic and fundamental questions such as what and why gamify to more mature ones such as how to gamify, when and when not, and still facing empirical and theoretical challenges to prove the effects of its practice and consolidate the principles that guide meaningful gamification designs. The purpose of this paper is to conduct a bibliometric study to describe how gamification as a scientific discipline is structured and how it has evolved over time. To do this, we make use of bibliometric performance analysis and science mapping methods to display and analyze the intellectual, conceptual and social network structures of gamification research, as well as the evolution and dynamical aspects of the discipline. The results reveal the research fronts and intellectual structures of the field, the internal relationships among articles, authors and keywords, the existing networks of collaboration, the emerging trends, the hot topics, and the most influential authors, publications and sources. Together, they picture the intellectual landscape of gamification as a scientific field that will be useful for junior and senior researchers, practitioners, funding agencies and policymakers.

Gamification is a potential approach to foster motivation and engagement in different contexts which popularity in recent years has encouraged its application in a diversity of domains, including health, education, business, society, or tourism. However, although all their promising benefits and rapidly developing, the gamification community should face a variety of theoretical, empirical, and technological challenges. Focusing on technological challenges, we can observe a need that claims for suitable gamification software tools that offer system-independence and flexibility, support the gamification design, implementation, and monitoring activities, and experiment with more game elements than only points, badges, and leaderboards. For that reason, this paper deals with the identified technological challenges by introducing a gamification software tool to cover the main lacks found. An analysis of the advances in gamification domain and their recent literature was conducted to identify the strengths and weaknesses of the most popular gamification software tools in order to design and develop a flexible system-independent gamification software solution that goes beyond the implementation of the classic game elements. As a result, we created GoRace, a multi-context and narrative-based gamification suite that supports the entire gamification process, provides flexible and system-independent gamification solutions, and allows the creation of tailored and reusable gamification solutions that go beyond the classic game elements to immerse participants in a fun, engaging, and challenging narrative-based gamification experience.

Advances achieved in diagnosis and improvements in treatment for breast cancer have resulted in a favourable survival rate. Therapeutic physical exercise (TPE) is presented as an intervention strategy that seeks to improve the functional capabilities of the subject. To analyse if clinical practice guidelines recommend therapeutic physical exercise to reduce the adverse effects of treatment in breast cancer survivors, and on what level of scientific evidence are these recommendations based. This systematic review was prepared by searching nine electronic databases to identify eligible studies. Thirteen met the criteria for inclusion. The Appraisal of Guidelines for Research and Evaluation (AGREE II) scale was used to analyse the quality of Clinical Practice Guideline (CPGs). The percentages obtained ranged between 30.07% and 75.70%. Specifically, the highest degree of evidence could be found in the application of TPE to offset adverse effects leading to effects such as: an increase in the quality of life, fatigue reduction, and reduction in body weight alterations. TPE is presented as an optimal intervention strategy to alleviate the negative effects that patients with breast cancer suffer as a result of the treatments received. The level of evidence that supports this claim is very strong for the majority of the side effects analysed. However, this evidence is not always included in the clinical practice guidelines.

Objective: To assess whether Functional Movement Screen (FMS) score is associated with subsequent injuries in healthy sportspeople.Design: Systematic review and meta-analysis.Data sources: The following electronic databases were searched to December 2017: Medline, PubMed, PsycINFO, SPORTDiscus, Cumulative Index of Nursing and Allied Health Literature, Scopus, Embase, and Physiotherapy Evidence Database.Eligibility criteria for selecting studies: Eligibility criteria included (1) prospective cohort studies that examined the association between FMS score (≤14/21) and subsequent injuries, (2) a sample of healthy and active participants without restrictions in gender or age, and (3) the OR was the effect size and the main outcome.Results: Thirteen studies met the criteria for the systematic review and 12 were included in the meta-analysis. In 5 of the 12 studies, and among female athletes in 1 study, FMS score ≤14 out of 21 points was associated with subsequent injuries. The overall OR of the selected studies in the meta-analysis was 1.86 (95% CI 1.32 to 2.61) and showed substantial heterogeneity (I²=70%).Summary/Conclusion: Whether or not a low FMS score ≤14 out of 21 points is associated with increased risk of injury is unclear. The heterogeneity of the study populations (type of athletes, age and sport exposure) and the definition of injury used in the studies make it difficult to synthesise the evidence and draw definitive conclusions.Trial registration number: CRD42015015579.

Background : Grip strength is a powerful predictor of disability as well as a good indicator of physical activity. Objectives : This study aimed to relate ultrasound (US) and electromyography (EMG) simultaneously to maximum hand-grip strength during an isometric contraction. Approach : This is a cross-sectional study. Data acquisition was done with a dynamometer, US and EMG. Outcome variables included maximum strength during the hand-grip gesture, maximum muscle activity and change in muscle thickness. A non-linear regression analysis was performed to analyse the relationship between all outcome variables. Main results : A total of 38 subjects (18 men and 20 women) participated in the study. The mean results for hand-grip strength were 25.50 (SD 6.55) kg of maximum strength, a change in muscle thickness of 1.83 (SD 0.75) mm and an EMG activity of 499.29 (SD 224.20) µV. Hand-grip strength had a high correlation with muscle thickness ( R ² = 0.61) and EMG activity ( R ² = 0.95). The correlation between maximum muscle activity and change in muscle thickness was R ² = 0.83. Significance : The results of the present study demonstrate that this new method based on electromyographic activity and muscule architecture could be important in the development of the hand-grip test.