Effects of high-intensity interval training on depressive and anxiety symptoms in healthy individuals: A systematic review and meta-analysis of randomized clinical trials.

Although evidence regarding the effects of high-intensity interval training (HIIT) on mental health has increased in recent years, there is still no consensus regarding the effects of HIIT on the symptoms of depression and anxiety in a healthy population. Therefore, this systematic review aimed to investigate the effects of HIIT on depressive and/or anxiety symptoms in healthy individuals. The following four databases were searched: PubMed, Scopus, Embase, and PsycINFO. Only randomized clinical trials (RCTs) were included. We performed a random-effects meta-analysis based on standardized mean difference (SMD). The risk of bias was assessed using the RoB 2.0 tool, and the certainty of the evidence was evaluated based on recommendations GRADE. Eight RCTs evaluating 471 participants (81% female) were considered eligible for inclusion. The results of the meta-analysis showed that HIIT-based interventions had no significant effect on reducing anxiety (SMD = -0.17; 95% CI: -0.53, 0.19; p = 0.27) and depressive symptoms (SMD = -0.38; 95% CI: -1.06, 0.30; p = 0.17) compared with the passive control group. In conclusion, HIIT does not improve symptoms of depression and anxiety in healthy individuals. This finding is based on evidence of very low certainty. Therefore, the evidence is still not consistent enough to support HIIT as a viable strategy to reduce both outcomes because of the limited number of included studies and the overall quality of evidence.

Effect of replacing forage sorghum silage with biomass sorghum silage in diets for F1 Holstein × Zebu lactating cows.

The objective of this study was to evaluate the replacement of forage sorghum silage (FS silage) with BRS 716 biomass sorghum silage (BRS 716 silage) in diet of F1 ½ Holstein × ½ Zebu cows on their nutrient intake and digestibility, ingestive behavior, nitrogen balance, and milk yield and composition. The experimental design was in two 5 × 5 Latin squares, simultaneous, composed, each, by five animals, five treatments, and five experimental periods. The study included 10 cows with an initial body weight (BW) of 544 ± 12.84 and 88 ± 14 days of lactation at the beginning of the experiment. The treatments were defined by replacement FS silage at levels 0, 25, 50, 75, and 100% with BRS 716 silage. The roughage:concentrate ratio in the total dry matter (DM) of the diets was 75:25. The replacement of FS silage with BRS 716 silage reduced (p < 0.01) the dry matter intake and digestibility of dry matter, but it had not changed average milk yield (12.68 kg/day; p = 0.94), feed efficiency, body weight, the score of body condition, and the average daily gain of the cows. The milk composition was not changed except casein/total protein in milk that decreased and that increased linearly milk urea nitrogen. The inclusion of BRS 716 silage increased the activities of rumination and chewing and decreased the periods of feeding and idleness. The replacement of up to 100% of FS silage with BRS 716 silage in the diet of F1 Holstein × Zebu cows does not alter average milk yield, despite changing diet intake and digestibility.

Effect of different roughage sources associated banana pseudostem hay on the nutritional and behavioral parameters and performance of F1 Holstein/Zebu lactation cows.

The objective of this study was to evaluate the association of pseudostem hay of banana trees of different roughages in the diet of F1 Holstein/Zebu cows on their nutrient intake and digestibility, nitrogen balance, microbial synthesis, ingestive behavior, and milk production. The experiment was distributed in two simultaneous 4 × 4 Latin squares. The treatments were as follows: diet 1-sorghum silage as exclusive dietary roughage; diet 2-sorghum silage (70%) associated with 30% pseudostem hay of banana trees (dry matter basis); diet 3-70% elephant grass with 30% pseudostem hay of banana trees (dry matter basis); and diet 4-70% sugarcane with 30% banana pseudostem hay (dry matter basis). The roughage/concentrate ratio was 75:25. The animals fed with sorghum silage presented 14.45% higher intake (p = 0.01) to that of animals fed hay and elephant grass. The diets containing silage and silage with hay showed digestibility of neutral detergent fiber corrected for ash and protein that was 57.75% higher (p < 0.01) than that of other diets. Cows fed elephant grass spent more time intake (p = 0.01). Diets did not influence milk yield (p = 0.47), and the milk yield corrected for 3.5 fat (p = 0.22), final weight (p = 0.06), and intake efficiency (p = 0.57), presenting a mean of 14.16 kg/day, 15.94 kg/day, 590 kg, and 0.9 kg of milk/kg of ingested dry matter, respectively. The utilization of pseudostem hay associated with other roughage can be an alternative to milk yield in F1 Holstein/Zebu cows.

Productive and reproductive performance of females F1 Holstein x Gir daughters of proven bulls.

Records of 234 lactations from F1 Holstein x Gyr daughters of proven bulls were used in this study for the evaluation of productive and reproductive characteristics of cows. Data were collected from a private farm located in the municipality of Santo Antônio do Monte, MG, Brazil. The objective of this study was to evaluate the effects of Holstein bull's PTA milk (predicted transmitting ability) calving year, season, and parity on the productive and reproductive characteristics of F! cows. The productive characteristics analyzed were total milk production (TMP), average daily production (ADP), days in milk (DIM), and milk yield per day of calving interval (MYDCI). The studied reproductive characteristics were service interval (SI), calving interval (CI), and gestation length (GL). The results were subjected to statistical analysis and means for significant effects were compared using Duncan's test at a significance level of 5%. F1 animals efficiently expressed their genetic potential for milk production with an average total milk production of 7842.61 kg and average daily production of 24.53 kg. Means for days in milk, milk yield per day of calving interval, service interval, calving interval, and gestation length were 322.52 days, 20.73 kg, 106.0 days, 383.23 days, and 276.18 days, respectively. Properly managed F1 Holstein x Gyr daughters of proven bulls fed a balanced diet efficiently expressed their genetic potential for milk production without adverse effects on reproduction. Moreover, Holstein x Gyr cows should be selected based on parents' PTA for milk traits and other factors such as environmental conditions and management.

Combinations of cactus pear with different roughage sources on the production, chemical composition, and milk fatty acid profile of F1 Holstein/Zebu cows.

The qualities of food, mainly of animal origin, have always been of concern to consumers. It is known that the composition of animals' diets can influence the composition of the foods produced, such as milk. Thus, the objective of this study was to evaluate diets with cactus pear in combination with different forages for F1 Holstein/Zebu cows on the chemical composition and fatty acid profile of milk. Two simultaneous 4 × 4 Latin squares were used in the experimental design. Four experimental diets were used: Diet 1, sorghum silage as the only roughage; Diet 2, sorghum silage combined with cactus pear in a proportion of 50% of the roughage (dry matter basis); Diet 3, elephant grass (Pennisetum purpureum cv. Roxo) as the only roughage; and Diet 4, elephant grass combined with cactus pear in a proportion of 50% of the roughage. The roughage:concentrate ratio was 75:25. The milk urea nitrogen was higher (16.08 mg/dL) in the milk of cows fed the diet with only elephant grass than that of milk from the other diet groups. The other analyzed variables of the chemical composition of milk were not influenced by the diets. However, there was a change in the sum of the saturated and monounsaturated fatty acids. The content of C16:0 fatty acid was higher and that of C18:0 was lower in the milk of cows fed the cactus pear diets than in that of cows fed the other diets. Higher levels of oleic acid were observed in the milk of cows fed with diets containing elephant grass than those in the milk of the cows in the sorghum forage groups. Conjugated linoleic acid (CLA) was higher in the milk of cows fed cactus pear than in that of the other cows. The combination of cactus pear with elephant grass or sorghum silage in the diet did not alter the chemical composition of milk. However, it influenced the fatty acid profile.

Weight Regain, but not Weight Loss, Is Related to Competitive Success in Real-Life Mixed Martial Arts Competition.

We aimed to describe the nutritional and behavioral strategies for rapid weight loss (RWL), investigate the effects of RWL and weight regain in winners and losers, and verify mood state and technical-tactical/time-motion parameters in mixed martial arts. The sample consisted of mixed martial arts athletes after a single real match and was separated into two groups: winners (n = 8; age: 25.4 ± 6.1 years, height: 173.9 ± 0.2 cm, habitual body mass: 89.9 ± 17.3 kg) and losers (n = 7; age: 24.4 ± 6.8 years, height: 178.4 ± 0.9 cm, habitual body mass: 90.8 ± 19.5 kg). Both groups exhibited RWL and weight regain, verified their macronutrient intake, underwent weight and height assessments, and completed two questionnaires (Profile of Mood States and RWL) at (a) 24 hr before weigh-in, (b) weigh-in, (c) postbout, and (d) during a validated time-motion and technical-tactical analysis during the bout. Variance analysis, repeated measures, and a logistic regression analysis were used. The main results showed significant differences between the time points in terms of total caloric intake as well as carbohydrate, protein, and lipid ingestion. Statistical differences in combat analysis were observed between the winners and losers in terms of high-intensity relative time (58 [10-98] s and 32 [1-60] s, respectively), lower limb sequences (3.5 [1.0-7.5] sequences and 1.0 [0.0-1.0] sequences, respectively), and ground and pound actions (2.5 [0.0-4.5] actions and 0.0 [0.0-0.5] actions, respectively), and logistic regression confirmed the importance of high-intensity relative time and lower limb sequences on mixed martial arts performance. RWL and weight regain strategies were related to technical-tactical and time-motion patterns as well as match outcomes. Weight management should be carefully supervised by specialized professionals to reduce health risks and raise competitive performance.

Genital prevalence of HPV types and co-infection in men.

INTRODUCTION: HPV infection is a highly prevalent sexually transmitted disease and there is evidence of the relationship of HPV infection and the development of genital warts, penile intraepitelial neoplasia, invasive penile carcinoma and cervical cancer. However, there is sparse data regarding the prevalence of HPV types and co-infection of different HPV types among men. OBJECTIVES: To assess the prevalence of HPV subtypes infections and rates of co-infection among men. MATERIALS AND METHODS: 366 men were evaluated from March to October 2010. Men were referred to our institution for HPV diagnostic evaluation based on the following criteria: 1. presence of a genital wart; 2. presence of an atypical genital lesion; 3. absence of symptoms and a partner with a HPV diagnosis; 4. absence of symptoms and a desire to undergo a full STD diagnostic evaluation. Genital samples were collected from the urethra, penile shaft, scrotum and anus with Digene® collection and preservation kit and submitted to HPV genotype microarray detection (Papillocheck®). All men were tested for the low-risk HPV types 6-11-40-42-43-44 and for the high-risk HPV types 16-18-31-33-35-39-45-51-52-53-56-58-59-66-68-70-73-82. RESULTS: Of the 366 men, 11 were tested inconclusive and were excluded from the analysis. 256 men (72.1% of the men from the cohort referred to our institution) tested positive with genotype micro-array detection and 99 tested negative. The most preva¬lent HPV-subtypes in the studied population were 6, 42, 51 and 16. Co-infection was found in 153 men. Of those, 70 (19.7%) had a co-infection by 2 types, 37 (10.4%) by 3 types; 33 men (9.2%) by 4 types; 8 men (2.2%) by 5 types; 1 man (0.3%) by 6 types; 1 man (0.3%) by 7 types; 2 men (0.6%) by 8 types and 1 man (0.3%) by 9 types. CONCLUSION: The most frequent HPV types were 6, 16, 42 and 51. Co-infection was found in 59% of our patients. This information is vital to drive future public health policies including massive public vaccination campaign.

Examining the international bushmeat traffic in Belgium: A threat to conservation and public health.

The carriage of bushmeat into the European Union is an infringement of EU Animal Health and Wildlife Trade legislation and poses a threat to biodiversity and public health. To explore the nature and scale of the international bushmeat trade, seized leaking luggage and passengers arriving at Brussels Zaventem airport from sub-Saharan Africa between 2017 and 2018 were searched for "meat" (bushmeat and livestock) by border control authorities. Visual identification, radiography and genetic analysis were applied to derive information from seized specimens, including at least ten CITES-listed species. We estimate that an average of 3.9 t of bushmeat is smuggled monthly through Brussels. The average consignment of meat seized per passenger was 2.8 kg and 4 kg of bushmeat or domestic livestock meat, respectively. The international trafficking of bushmeat is evidently active, yet penalties are rarely enforced; hence we provide suggestions to simplify law enforcement procedures.

U-SMILE: a brief version of the Short Multidimensional Inventory on Lifestyle Evaluation.

INTRODUCTION: Lifestyle Medicine comprises six domains: diet, substance use, physical activity, stress management, social connection, and sleep. The comprehensive assessment of lifestyle is challenging, but the "Short Multidimensional Inventory on Lifestyle Evaluation" (SMILE) was developed to fill out this gap. In this paper, we describe the development and the psychometric properties (internal consistency, concurrent and convergent validity) of a shorter version of the SMILE among university students. METHODS: Data from a cross-sectional study including 369 students from 10 Brazilian universities were used. Considering a theoretical nomological net, we performed exploratory factor analysis to obtain the most parsimonious, interpretable and good-fitting model. RESULTS: The final model was called U-SMILE, comprised 24 items, and presented acceptable internal consistency (Cronbach's α = 0.73, McDonald's ω = 0.79). To evaluate the concurrent validity of the U-SMILE, we compared it to the original SMILE and found a high correlation between the instruments (Spearman's r= 0.94). Furthermore, we evaluated convergent validity by examining the U-SMILE correlation with the PHQ-9 (Spearman's r= -0.517), and GAD-7 (Spearman's r= -0.356), two validated instruments to screen for depression and anxiety, respectively. DISCUSSION: Our findings suggest that the U-SMILE is a valid instrument for assessing lifestyle among university students. We recommend that the use of U-SMILE to evaluate overall lifestyle scores rather than individual domain scores. Finally, we discuss the importance of clarifying the definitions of lifestyle and related constructs in future research.

Burnout and Coping Perceptions of Volleyball Players Throughout an Annual Sport Season.

Burnout is a psychological syndrome of reaction to chronic stress that occurs in athletes who feel exhausted by a sport activity that was previously pleasurable and enjoyable. One technique to prevent and control the syndrome is through coping, which is the ability to deal with stressful situations. In contrast to traditional cross-sectional approaches, this study aimed to investigate burnout and coping strategy characteristics over time and to analyze the relationship between burnout dimensions and coping strategies. Fifty-four high-level volleyball athletes (twenty-eight men and twenty-six women, age M = 25.57, SD = 4.72, range 18-35) completed paper-and-pencil measures of burnout and coping four times throughout a sport season. The Friedman test presented a significant increase in the reduced sense of athletic accomplishment (X2 = 20.58; p < 0.01) and sport devaluation (X2 = 19.83; p < 0.01) perceptions during the season. However, no coping differences were observed through the longitudinal analysis. Burnout dimensions showed a moderate inverse correlation to confidence/motivation at all measurement points during the season. Overall, the findings suggest that burnout perceptions increase as the season progresses, highlighting the relevance for the periodization of burnout prevention and control.

Rotura do tendão semimembranoso ­ Relato de caso de uma rara rotura tendínea / Semimembranous tendon rupture ­ Case report of a rare tendon rupture

Contexto: A rotura da inserção distal do tendão semimembranoso é uma lesão ocasionada no tendão de um dos músculos do grupo isquiotibiais, acarretando dor no joelho. Para o diagnóstico da lesão do tendão semimembranoso, a ressonância magnética é a principal modalidade de imagem. Descrição do caso: Homem de 63 anos acusa dor no joelho esquerdo há 1 semana. Apresenta melhora da dor com repouso e medicação. Ao exame físico, apresenta teste de Waldron positivo e testes de McMurray e Appley negativos, com edema articular, sem hematomas, apresentando limitação à movimentação devido à dor. A ressonância magnética apresenta a rotura do semimembranoso, e o tratamento foi realizado com medicação analgésica e anti-inflamatória. Discussão: Essa rotura é rara, e surge de uma força em valgo em uma perna hiperextendida externamente. O uso de esteroides anabolizantes pode aumentar o risco de rotura do tendão. Contudo, a ultrassonografia é um método de fácil acesso e é cada vez mais utilizada. O diagnóstico é realizado por meio de ressonância magnética. Seu tratamento pode ser realizado com anti-inflamatórios ou reparo cirúrgico. Conclusão: Relatamos um caso de rotura do tendão semimembranoso, composta por uma sintomatologia como dor no joelho, que pode ser tratada com anti-inflamatório ou reparo cirúrgico.

Comparison of the effects of volemic reposition with 7.5% NaCl or blood in an experimental model of muscular compression and hemorrhagic shock.

OBJECTIVE: Crush syndrome is characterized by traumatic muscular injuries with severe systemic clinical repercussions. The systemic inflammatory reaction characterized acutely by infiltration of neutrophils in the lungs has been studied as part of the spectrum of crush syndrome. Experimental research may demonstrate alternative treatments for crush syndrome. The authors studied the hypothesis that hypertonic saline solution (7.5% NaCl) could minimize the local and systemic effects in a model of muscular compression and hemorrhagic shock. METHODS: Rabbits were submitted to a new model of muscle compression associated with hemorrhagic shock. Compression was applied through an Esmarch bandage, used for 1 h on the entire right lower limb. Hemorrhagic shock was induced for 1 h by dissection and catheterization of the carotid artery. Blood replacement or hypertonic saline solution was used to treat the shock. Biochemical analysis of plasma, quantification of muscular edema, and infiltration of inflammatory cells in the lungs were carried out. RESULTS: Animals treated with hypertonic solution presented the same hemodynamic response as the blood treated patients, less water in the compressed muscles and less infiltration of inflammatory cells in the lungs. The blood group presented hypocalcemia, a facet of crush syndrome. CONCLUSIONS: The proposed model was effective for the study of crush syndrome associated with hemorrhagic shock. The treatment with hypertonic solution showed benefits when compared with blood volume replacement.

OBJETIVO: A síndrome de esmagamento é caracterizada por lesões musculares traumáticas com graves repercussões clínicas sistêmicas. A reação inflamatória sistêmica, caracterizada agudamente por infiltração de neutrófilos nos pulmões, tem sido estudada como parte do espectro da síndrome de esmagamento. A pesquisa experimental pode demonstrar opções de tratamento para a síndrome de esmagamento. Os autores estudaram a hipótese de que solução salina hipertônica (NaCl 7,5%) pudesse minimizar os efeitos locais e sistêmicos da síndrome de esmagamento em um modelo de compressão muscular e choque hemorrágico. MÉTODOS: Coelhos foram submetidos a um novo modelo de compressão muscular associado ao choque hemorrágico. A compressão foi feita por uma faixa de Esmarch aplicada por uma hora em todo membro inferior direito. O choque hemorrágico foi induzido durante uma hora por dissecção e cateterização da artéria carótida. O choque foi tratado com reposição de sangue ou solução salina hipertônica. Foram feitas análises bioquímicas do plasma, quantificação do edema muscular e infiltração de células inflamatórias nos pulmões. RESULTADOS: Os animais tratados com solução hipertônica apresentaram a mesma resposta hemodinâmica observada naqueles tratados com sangue, menor quantidade de água nos músculos comprimidos e menor infiltração de células inflamatórias nos pulmões. O grupo tratado com sangue apresentou hipocalcemia, característica da síndrome de esmagamento. CONCLUSÕES: O modelo proposto mostrou-se efetivo para o estudo da síndrome de esmagamento associada ao choque hemorrágico. O tratamento com solução hipertônica apresentou benefícios quando comparado com a reposição volêmica com sangue.

Prevalence of premenstrual syndrome and its psychological effects among university students who participate and do not participate in resistance training / Prevalência da Síndrome Pré-Menstrual (SPM) e seus efeitos psicológicos entre universitárias praticantes e não praticantes de treinamento resistido / Prevalencia del síndrome premenstrual y sus efectos psicológicos entre estudiantes universitarios que participan y no participan en el entrenamiento de resistencia

ABSTRACT The study aimed to investigate the prevalence and effects of premenstrual syndrome (PMS) on the psychological factors of university students who do and do not participate in resistance training. The initial sample consisted of 81 participants, and the prevalence of PMS was 64.2%. Forty women diagnosed with PMS were divided into two groups: women who participated in (GP) and did not participate in (GNP) resistance training. The intergroup comparison showed significant differences (with higher scores in the GNP) in the items: difficulty concentrating, lack of energy, and feeling under pressure, and they reported a greater influence of the symptoms on their family relationships. It is concluded that women who participate in resistance training have reduced indicators of some psychological symptoms of PMS.

RESUMO O estudo objetivou investigar a prevalência e os efeitos da Síndrome Pré-Menstrual (SPM) nos fatores psicológicos de universitárias praticantes e não praticantes de treinamento resistido. A amostra inicial consistiu em 81 participantes, e a prevalência da SPM foi de 64,2%. Quarenta mulheres diagnosticadas com SPM foram divididas em dois grupos: praticantes (GP) e não-praticantes (GNP) de treinamento resistido. A comparação intergrupos apresentou diferenças significativas (com maiores escores do GNP) referentes aos itens: dificuldade de concentração, falta de energia, e sentindo-se sob pressão, tendo maior interferência dos sintomas em seus relacionamentos familiares. Conclui-se que mulheres praticantes de treinamento resistido apresentam indicadores reduzidos de alguns sintomas psicológicos da SPM.

RESUMEN El objetivo fue investigar la prevalencia y los efectos del síndrome premenstrual (SPM) sobre los factores psicológicos de las universitarias que practican y no practican el entrenamiento de resistencia. La muestra inicial consistió en 81 mujeres, y la prevalencia del SPM fue del 64,2%. Cuarenta mujeres diagnosticadas con SPM se dividieron en dos grupos: practicantes (GP) y no practicantes (GNP) de entrenamiento de resistencia. La comparación intergrupal mostró diferencias significativas (con puntajes de GNP más altos) con respecto a: dificultad para concentrarse, falta de energía y sentirse bajo presión, con una mayor interferencia de síntomas en sus relaciones familiares. Las mujeres que practican el entrenamiento de resistencia han reducido los indicadores de algunos síntomas psicológicos del SPM.

Effects of physical activity on the mood states of young students / Efeitos da atividade física sobre os estados de humor de jovens estudantes

ABSTRACT The objective of this research was to analyze the effect of level of physical activity on perception of mood states among young students in the final grades of high school. The sample consisted of a total of 216 students, of both sexes, with an average age of 16.89±1.48 years. This cross-sectional research was characterized as descriptive and of a quantitative nature. For data collection, the Brunel Mood Scale (BRUMS) and the Habitual Physical Activity Questionnaire were used. Normality was verified through the Kolmogorov-Smirnov test. Subsequently, inferential statistics for non-parametric data were applied, with the Kruskal-Wallis and Dunn's Post-Hoc tests. Spearman's correlation coefficient was used to check the relationship between level of physical activity and mood states. Significance was set at p<0.05. From the results, we found that the perception of mood states reported by young students had significant differences when we consider this population's level of physical activity. Young individuals classified as physically inactive reported a lower level of vigor, as well as a greater predisposition to negative mood aspects compared to physically active ones. In this case, physical activity can contribute to a better perception of psychological health.

RESUMO O objetivo desta pesquisa foi analisar o efeito do nível de atividade física na percepção dos estados de humor em jovens estudantes das séries finais do Ensino Médio. A amostra foi constituída por um total de 216 estudantes, de ambos os sexos, com uma idade média de 16,89 ±1,48 anos. Esta pesquisa de caráter transversal se caracterizou como descritiva e de aspecto quantitativo. Para a coleta de dados foram utilizados a Escala de Humor de Brunel (BRUMS) e o Questionário de Atividades Físicas Habituais. A verificação da normalidade foi realizada através do teste de Kolmogorov-Smirnov. Posteriormente aplicou-se a estatística inferencial para dados não paramétricos, com os testes de Kruskal-Wallis e Post-Hoc de Dunn. O coeficiente de correlação de Spearman foi utilizado para verificar a relação entre o nível de atividade física e os estados de humor. A significância adotada foi de p<0,05. A partir dos resultados verificamos que a percepção dos estados de humor relatadas por jovens escolares possuem diferenças significativas quando consideramos o nível de atividade física dessa população. Jovens classificados como inativos fisicamente relataram um menor nível de vigor bem como uma maior predisposição aos aspectos negativos de humor quando comparado aos jovens ativos fisicamente. Nesse caso, a atividade física pode contribuir para uma melhor percepção da saúde psicológica.

Prevalence of burnout syndrome and perception by playing position in professional football players

Abstract Aim: The present study aimed to investigate the indicators of burnout, to determine whether playing position affects the perception of syndrome dimensions, and to identify burnout prevalence in professional football players. Methods: The participants were 100 professional football players (mean age 24.3 ± 4.6 years and meantime as a professional athlete of 9.2 ± 4.5 years) who were divided into three groups: 27 forwards, 34 midfielders, and 39 defenders. The Athlete Burnout Questionnaire (ABQ) and a sociodemographic questionnaire were applied. Results: The results show that a) the majority of athletes had low burnout indicators, b) there was no difference in the perception of burnout dimensions by playing position, and c) the prevalence of athletes with burnout, whether mild, moderate, or severe, was 13%. Conclusion: The variable of playing position was not a determinant of perception of burnout dimensions among the forwards, midfielders, and defenders. Nonetheless, the prevalence of burnout deserves attention, as the negative effects of this syndrome may exert impacts on health, well-being, and sports performance, making athletes more likely to abandon their sport.

Efeitos de um microciclo de Crossfit® em variáveis da carga interna de treinamento / Effects of a Crossfit® microcycle on internal training load variables / Efectos de un microciclo de Crossfit®en variables de la carga interna de entrenamiento

Investigar o efeito de um microciclo habitual de CrossFit®em indicadores da carga interna de treinamento. Participaram do estudo noveindivíduos com média de idade de 28,5±3,4anos. Frequência cardíaca de repouso (FCrep), variabilidade da FC, testes físicos e o perfil de hu-mor foram mensurados no primeiro (PRÉ) e no último dia (PÓS) de um microciclo. Foram aplicados testes tpareados e o tamanho de efeito por dCohen. Dentre os principais achados,a FCrep aumentou (4,3%; p<0,001), o rMSSD reduziu (-8,8%; p=0,04) e o desempenho físico reduziu (-2,5 a -6%; p<0,05).O microciclo de CrossFit®investigado promoveu efeito negati-vo na carga interna dos praticantes como resultado de fadiga acumulada em apenas uma se-mana de treinamento.

To investigate the effect of a typical CrossFit®microcycle on central and peripheral indicators of the internal training load. Nine individuals with mean age of 28.5±3.4 yo. Resting heart rate (HRR), HR variability, physical tests and mood profile were measured on the first (PRE) and on the last day (POS) of a microcycle. Paired t tests and Cohen's d were applied. Among the main findings, resting heart rate (HRR) increased (4.3%; p <0.001), rMSSD decreased (-8.8%, p = 0.04) and physical performance decreased (-2.5 to -6%, p <0.05). The investigated CrossFit® microcycle promoted a significant negative effecton the internal load aspects of the practitioners as a result of accumulated fatigue in only one week of training.

Investigar el efecto de un microciclo habitual de CrossFit® en indicadores de la carga interna de entrenamiento. Materiales y métodos:Participaron del estudio 9 individuos con edad de 28,5±3,4 años. La frecuencia cardíaca de reposo (FCrep), la variabilidad de FC, las pruebas físicas y el perfil de humor se midieron en el primer (PRÉ) y en el último día (POS) de un microciclo. Se aplicaron pruebas tpareadas y el tamaño de efecto por dCohen. Resultados:Entre los principales hallazgos a FCrep aumentó (4,3%, p<0,001), el rMSSD redujo (-8,8%, p=0,04) yel desempeño físico disminuyó (-2,5 a -6%, p<0,05). Conclusión:El microciclo de CrossFit® investigado suscitó efecto negativo en la carga interna como resultado de fatiga acumulada en apenas una semana de entrenamiento.

Comparison of the effects of volemic reposition with 7. 5 % NaCl or blood in an experimental model of muscular compression and hemorrhagic shock / Comparação dos efeitos da reposição volêmica com NaCl 7, 5 % ou sangue em um modelo experimental de compressão muscular e choque hemorrágico

ABSTRACT Objective: Crush syndrome is characterized by traumatic muscular injuries with severe systemic clinical repercussions. The systemic inflammatory reaction characterized acutely by infiltration of neutrophils in the lungs has been studied as part of the spectrum of crush syndrome. Experimental research may demonstrate alternative treatments for crush syndrome. The authors studied the hypothesis that hypertonic saline solution (7.5% NaCl) could minimize the local and systemic effects in a model of muscular compression and hemorrhagic shock. Methods: Rabbits were submitted to a new model of muscle compression associated with hemorrhagic shock. Compression was applied through an Esmarch bandage, used for 1 h on the entire right lower limb. Hemorrhagic shock was induced for 1 h by dissection and catheterization of the carotid artery. Blood replacement or hypertonic saline solution was used to treat the shock. Biochemical analysis of plasma, quantification of muscular edema, and infiltration of inflammatory cells in the lungs were carried out. Results: Animals treated with hypertonic solution presented the same hemodynamic response as the blood treated patients, less water in the compressed muscles and less infiltration of inflammatory cells in the lungs. The blood group presented hypocalcemia, a facet of crush syndrome. Conclusions: The proposed model was effective for the study of crush syndrome associated with hemorrhagic shock. The treatment with hypertonic solution showed benefits when compared with blood volume replacement.

RESUMO Objetivo: A síndrome de esmagamento é caracterizada por lesões musculares traumáticas com graves repercussões clínicas sistêmicas. A reação inflamatória sistêmica, caracterizada agudamente por infiltração de neutrófilos nos pulmões, tem sido estudada como parte do espectro da síndrome de esmagamento. A pesquisa experimental pode demonstrar opções de tratamento para a síndrome de esmagamento. Os autores estudaram a hipótese de que solução salina hipertônica (NaCl 7,5%) pudesse minimizar os efeitos locais e sistêmicos da síndrome de esmagamento em um modelo de compressão muscular e choque hemorrágico. Métodos: Coelhos foram submetidos a um novo modelo de compressão muscular associado ao choque hemorrágico. A compressão foi feita por uma faixa de Esmarch aplicada por uma hora em todo membro inferior direito. O choque hemorrágico foi induzido durante uma hora por dissecção e cateterização da artéria carótida. O choque foi tratado com reposição de sangue ou solução salina hipertônica. Foram feitas análises bioquímicas do plasma, quantificação do edema muscular e infiltração de células inflamatórias nos pulmões. Resultados: Os animais tratados com solução hipertônica apresentaram a mesma resposta hemodinâmica observada naqueles tratados com sangue, menor quantidade de água nos músculos comprimidos e menor infiltração de células inflamatórias nos pulmões. O grupo tratado com sangue apresentou hipocalcemia, característica da síndrome de esmagamento. Conclusões: O modelo proposto mostrou-se efetivo para o estudo da síndrome de esmagamento associada ao choque hemorrágico. O tratamento com solução hipertônica apresentou benefícios quando comparado com a reposição volêmica com sangue.

Predisposição ao fluxo: percepção dos praticantes do basquete em cadeira de rodas / Flow prediction: perception of wheelchair basketball practicers / Disposición a flujo: percepción de los practicantes de baloncesto en silla de ruedas

O objetivo do presente estudo foi investigar a percepção de fluxo em 15 paratletas de basquetebol em cadeira de rodas do sexo masculino. Para isto, foi utilizada a "Escala de Predisposição ao Fluxo" e a análise de dados foi realizada por meio de estatística descritiva e análise de correlação para estabelecer a relação entre as dimensões do estado de fluxo. De modo geral verificamos que os paratletas vivenciam o estado de fluxo, sendo que experiência autotélica e clareza de metas foram as dimensões com maior prevalência entre os praticantes da modalidade, assim como concentração na tarefa apresentou-se correlacionada com as dimensões fusão entre ação e consciência, metas claras, percepção de controle, e experiência autotélica.

The aim of the present study was to investigate the perception of flow in 15 male wheelchair basketball athletes. For this, the "Flow Predisposition Scale" was used and the data analysis was performed through descriptive statistics and correlation analysis to establish the relationship between the flow feeling dimensions. In general, we verified that the athletes experience flow, specially autothelic experience and clarity of goals, the dimensions with greater prevalence among the practitioners of the modality, as well as concentration on task was correlated with the dimensions fusion between action and consciousness, clear goals, perception of control, and autotelic experience.

El objetivo del presente estudio fue investigar la percepción de flujo en 15 atletas de baloncesto en silla de ruedas del sexo masculino. Para ello, se utilizó la "Escala de Predisposición al Flujo" y el análisis de datos fue realizado por medio de estadística descriptiva y análisis de correlación para establecer la relación entre las dimensiones del estado de flujo. En general verificamos que los atletas experimentan el estado de flujo, siendo que la experiencia autotélica y la claridad de metas fueron las dimensiones con mayor prevalencia entre los practicantes de la modalidad, así como concentración en tarea se presentó correlacionada con las dimensiones de fusión entre acción y conciencia, metas claras, percepción de control, y experiencia autotélica.

Mental fatigue does not affect heart rate recovery but impairs performance in handball players / Fadiga mental não altera a recuperação da frequência cardíaca, mas afeta o desempenho de jogadores de handebol / Fatiga mental no varía la reparación de frecuencia cardiaca y muda el rendimiento en balonmano

INTRODUCTION: This study involved an analysis of the impact of mental fatigue on heart rate recovery (HRR), subjective measures of fatigue and intermittent running performance in handball players. OBJECTIVE: This study was aimed at (1) examining the effects of an induced state of mental fatigue on the aerobic performance of handball players, as measured by the Yo-Yo IR1 test, and (2) exploring possible changes in heart rate regulation through HRR analysis. METHODS: Twelve handball players (age: 17.50 ± 3.63 years; 5 ± 2.2 years of practice) undertook a Yo-Yo IR1 test on two occasions, separated by an interval of at least 72 hours. The Yo-Yo IR1 test was preceded by a 30-min treatment, consisting of the Stroop Color-Word Test, to induce mental fatigue. Participants in the control condition watched an emotionally neutral video. RESULTS: Higher ratings of mental fatigue and mental effort following the Stroop Test were observed for the experimental group. No differences in motivation were observed between conditions. Moreover, the induction of mental fatigue impaired running performance and led to a higher RPE during the Yo-Yo IR1 test. Notwithstanding, no changes in HRR or blood lactate levels were observed across conditions. CONCLUSION: Altogether, these results suggest that mental fatigue impairs intermittent running performance, without affecting HRR values. Level of Evidence III; Case-Control study.

INTRODUÇÃO: Este estudo envolveu uma análise do impacto da fadiga mental sobre a recuperação da frequência cardíaca (RFC), medidas subjetivas de fadiga e desempenho de corrida intermitente em jogadores de handebol. OBJETIVO: Este estudo visou (1) examinar os efeitos de um estado induzido de fadiga mental no desempenho aeróbico de jogadores de handebol, medido pelo teste Yo-Yo IR1 e (2) explorar possíveis alterações na regulação da frequência cardíaca através da análise da RFC. MÉTODOS: Doze jogadores de handebol (idade: 17,50 ± 3,63 anos, 5 ± 2,2 anos de prática) realizaram um teste Yo-Yo IR1 em duas ocasiões, com pelo menos 72 horas de intervalo. O teste Yo-Yo IR1 foi precedido por tratamento de 30 minutos que consistiu no teste Stroop Color-Word para induzir estado de fadiga mental. Os participantes na condição de controle assistiram a um vídeo emocionalmente neutro. RESULTADOS: Foram observadas taxas mais elevadas de fadiga mental e esforço mental após o teste Stroop para o grupo experimental. Não foram observadas diferenças na motivação entre as condições. Além disso, a indução de fadiga mental prejudicou o desempenho de corrida e levou a maior PSE durante o teste Yo-Yo IR1. Não obstante, não foram observadas alterações na RFC nem nas concentrações de lactato sanguíneo entre as condições. CONCLUSÃO: Em conjunto, esses resultados sugerem que a fadiga mental afeta o desempenho de corrida intermitente, sem alterar os valores de RFC. Nível de Evidência III; Estudo de caso-controle.

INTRODUCCIÓN: En el presente estudio se analizó el impacto de la fatiga mental en la recuperación de la frecuencia cardíaca (RFC), las medidas subjetivas de fatiga y el rendimiento intermitente en atletas de handball. OBJETIVO: los objetivos de este estudio fueron (1) examinar los efectos de un estado inducido de fatiga mental en el rendimiento aeróbico de atletas de handball, medida por el Yo-Yo IR1, y (2) explorar las posibles alteraciones en la regulación de la frecuencia cardíaca a través del análisis RFC. MÉTODOS: Doce atletas (edad: 17,50 ± 3,63 años, 5 ± 2,2 años de práctica) realizaron un test Yo-Yo IR1 en dos ocasiones, separados por un intervalo de al menos 72 horas. El test Yo-Yo IR1 fue precedido por un tratamiento de 30 minutos, consistente en el Stroop Color-Word Test, para inducir un estado de fatiga mental. Los participantes en la condición de control asistieron un video emocionalmente neutro. RESULTADOS: Se observaron altas percepciones de fatiga y esfuerzo mental después del test de Stroop para el grupo experimental. No se observaron diferencias de motivación entre las condiciones. Además, la inducción de fatiga mental perjudicó el desempeño de carrera y llevó a un mayor PSE durante el test Yo-Yo IR1. No obstante, no se observaron alteraciones en la RFC y en las concentraciones de lactato sanguíneo entre las condiciones. CONCLUSIÓN: En conjunto, estos resultados sugieren que la fatiga mental afecta el rendimiento intermitente de la carrera, sin alterar los valores de FCR. Nivel de Evidencia III; Estudio de caso-control.

Software: recurso terapêutico ocupacional para estimulação cognitiva do idoso / Software: occupational therapeutic resources to cognitive stimulation of elderly

Idosos com problemas cognitivos possuem declínio em sua capacidade funcional, tornando-se mais dependentes e com baixa qualidade de vida. O objetivo desse estudo é desenvolver um software baseado nos testes, nas atividades cotidianas descritas na literatura como as mais afetadas nesta população e da experiência do projeto de intervenção desenvolvido no Instituto Federal do Rio de Janeiro. Essa proposta se justifica por estudos comprovarem que, por meio da estimulação cognitiva, os idosos conseguem realizar melhor suas atividades rotineiras. Visa ao aprimoramento do funcionamento cognitivo, melhoria da qualidade de vida e da segurança nas realizações das atividades cotidianas buscando um desempenho mais competente, maior autonomia e independência. A metodologia utilizada foi de caráter exploratório, a partir do levantamento da literatura, que demonstrou que o questionário de Pfeffer, o Índice de Katz e a Medida Independência Funcional vinculada à funcionalidade das atividades da vida diária e as instrumentais que formam a base das áreas cognitivas mais afetadas. A partir desses dados, dividiu-se um software em dez exercícios, abrangendo as áreas específicas da cognição, pois o mesmo pode ser um recurso terapêutico ocupacional para idosos que necessitem de estímulo e intervenções em seu desempenho ocupacional. As informações foram dispostas em relação ao uso de cores e quantidade de elementos, pois estas facilitam ou dificultam o acesso e compreensão da interface. Concluiu-se que o software pode ser uma proposta positiva para diminuir gasto energético, porque as realizações dos exercícios favorecem a relação independência/dependência, aumentam a eficácia e as habilidades requeridas para praticá-los. (AU)

Elderly with cognitive problems have functional capacity decline, becoming more dependent and with low quality of life. The aim of this study is to develop software based on tests, in everyday activities described in the literature as the most affected in this population and the experience of the project developed at the Federal Institute of Rio de Janeiro. This proposal is justified by studies demonstrate that, through cognitive stimulation, elderly can better carry out their routine activities. Aims at preventing cognitive functioning, improved quality of life and safety in the achievements of everyday activities seeking a more competent performance, greater autonomy and independence. The methodology used was in exploratory character, from the literature review, which showed that Pfeffer's questionnaire, Katz Index, Independence Function Measure linked to the functionality of the activities of daily living and instrumental that forms the basis of the most affected cognitive areas. From these data, the software was divided into ten exercises covering specific areas of cognition, as it may be an occupational therapeutic resource for seniors who need encouragement and assistance in their occupational performance. The information were arranged in relation to the use of color and quantity of elements that facilitate or difficult the access and understanding of the interface. It was concluded that the software is a positive proposal by decreasing energy expenditure, because the achievements of exercises favors independence/dependence, compared the effectiveness and increase the skills required to practice them. (AU)