Objective: To establish the injury profile of soccer players from a first division Brazilian soccer team. In addition, we investigated the association between the characteristics of the injuries and the player's age and position. Method: Forty-eight players from a Brazilian first division soccer team were followed during one season. Descriptive statistics were used to characterize the injury profile. Spearman's tests were used to verify the association between the number and severity of injuries and the player's age. Chi-square test was used to verify the association between type of injury and player's position. Fisher's exact test was used to verify the association between the severity of injuries and player's position. Results: The incidence of injuries was 42.84/1000 hours in matches and 2.40/1000 hours in training. The injury severity was 19.5±34.4 days off competition or training. Lower limb was the most common location of injury and most injuries were muscular/tendinous, overuse, non-recurrent, and non-contact injuries. Player's age correlated with the amount and severity of muscle and tendon injuries. Defenders had more minimal injuries (1-3 days lost), while forwards had more moderate (8-28 days lost) and severe injuries (>28 days lost). Furthermore, wingbacks had more muscle and tendon injuries, while midfielders had more joint and ligament injuries. Conclusion: The injury profile of the Brazilian players investigated in this study reflected regional differences in soccer practices. Results confirm the influence of the player's age and position on the soccer injuries profile.

Background Given the severe economic and performance implications of hamstring injuries, there are different attempts to identify their risk factors for subsequently developing injury prevention strategies to reduce the risk of these injuries. One of the strategies reported in the scientific literature is the application of interventions with eccentric exercises. To verify the effectiveness of these interventions, different eccentric strength measurements have been used with low-cost devices as alternatives to the widespread used isokinetic dynamometers and the technically limited handheld dynamometers. Therefore, the purpose of the present systematic review was to summarize the findings of the scientific literature related to the evaluation of eccentric strength of hamstring muscles with these new technologies. Methods Systematic searches through the PubMed, Scopus, and Web of Science databases, from inception up to April 2020, were conducted for peer reviewed articles written in English, reporting eccentric strength of hamstrings assessed by devices, different to isokinetic and handheld dynamometers, in athletes. Results Seventeen studies were finally included in the review with 4 different devices used and 18 parameters identified. The pooled sample consisted of 2893 participants (97% male and 3% female: 22 ± 4 years). The parameters most used were peak force (highest and average), peak torque (average and highest), and between-limb imbalance (left-to-right limb ratio). There is inconsistency regarding the association between eccentric hamstrings strength and both injury risk and athletic performance. There is no standardized definition or standardization of the calculation of the used parameters. Conclusions The current evidence is insufficient to recommend a practical guide for sports professionals to use these new technologies in their daily routine, due to the need for standardized definitions and calculations. Furthermore, more studies with female athletes are warranted. Despite these limitations, the eccentric strength of hamstring muscles assessed by different devices may be recommended for monitoring the neuromuscular status of athletes.

RESUMOObjetivo: Série de casos com o objetivo de avaliar os resultados do tratamento cirúrgico do pé cavo varo sutil com osteotomia de extensão do primeiro metatarso e liberação da fáscia plantar. Métodos: Foram avaliados 11 pacientes e 12 pés, com média de idade de 40 anos, acompanhamento mínimo de 12 meses, sendo cinco do sexo masculino e seis do sexo feminino. Todos apresentavam diagnóstico de pé cavo varo sutil, com patologias associadas que não melhoraram com o tratamento conservador e foram submetidos à correção cirúrgica. Os pacientes foram avaliados através do exame clínico, do questionário da American Orthopaedic Foot and Ankle Society Score (AOFAS), da escala visual analógica (EVA) da dor no pré e pós-operatório, da avaliação do grau de satisfação e da correção clínica da deformidade. Resultados: O AOFAS médio passou de 44,4 para 80. A EVA da dor média passou de 8,7 para 2,0 pontos. Sete pacientes classificaram o resultado como excelente, dois pacientes como bom e os outros dois como regular. Dois pacientes tiveram deiscência da ferida operatória, um apresentou uma neuropatia no nervo fibular e um outro metatarsalgia de transferência, todos foram tratados clinicamente com resolução dos quadros. Não houve recidiva da deformidade e das patologias associadas. Conclusão: O tratamento cirúrgico do pé cavo varo sutil através da osteotomia do primeiro metatarso em associação à liberação da fáscia plantar mostrou bons resultados clínicos. Nível de Evidência III; Estudo Retrospectivo Comparativo.Descritores: Pé cavo; Deformidades do pé; Diagnóstico; Tratamento. ABSTRACTObjective: To evaluate, using a case series, the results of the surgical treatment of subtle cavovarus foot with extension osteotomy of the first metatarsal and release of the plantar fascia. Methods: Eleven patients and 12 feet, including five males and six females with a mean age of 40 years and minimum follow-up of 12 months. All patients had a diagnosis of subtle cavovarus foot with associated pathologies that did not improve with conservative treatment and were subjected to surgical correction. The patients were evaluated through a clinical examination, the American Orthopedic Foot and Ankle Society (AOFAS) scale, the visual analog scale (VAS) of pain in the pre-and postoperative period, and assessment of the degree of satisfaction and clinical correction of the deformity. Results: The mean AOFAS score increased from 44.4 to 80. The mean pain VAS score decreased from 8.7 to 2.0. Seven patients rated the result as excellent, two patients as good and the other two as regular. Two patients had dehiscence of the surgical wound, one presented a neuropathy in the fibular nerve, and another presented transfer metatarsalgia; all were treated clinically with resolution of the clinical picture. There was no recurrence of deformities or associated pathologies. Conclusion: Surgical treatment of subtle cavovarus foot through first metatarsal osteotomy in combination with plantar fascia release showed good clinical results. Level of Evidence III; Retrospe...

Objective: To test the reliability between two instruments with different analysis mechanisms, either by GPS (model GPSPORTS®) or by video analysis (InStat For Players®), relating the results of total distance covered and distance at high speed ≥ 20km/h (Very High-Intensity Running Distance, VHIR) during official soccer matches. Study Design: This is a methodological study. Data from 35 male professional soccer athletes from all tactical positions were included. Age 29.2 (± 4.8 years) and body fat 9.9 (± 1.7%), excluding goalkeepers (102 individual analyzes) were collected in official matches. In the data analysis, descriptive statistics procedures were used to characterize the sample and the intraclass correlation coefficient (ICC) was used to verify the agreement on the stability and internal consistency of the tests with 95% confidence intervals (CI). Results: The ICC in the case of the total distance traveled variable was significant 0,914 (0,876; 0,941) and indicated a very high agreement, with the linear correlation coefficient indicating a strong positive correlation (p <0.001). The ICC for the VHIR variable was not significant, although the linear correlation coefficient indicates a strong positive correlation (p <0.001). Clinical Relevance Statment: This study reveals that there is good agreement in the comparison of two systems designed to analyze the movement demands of each professional soccer athlete in relation to the total distance covered. Level of Evidence I; Methodological Study - Investigation of a diagnostic test.