Resumo em Inglês:

Abstract Aims: The purpose of our study was to compare the hip and knee muscle activity before and after a hip abduction exercise program in women with patellofemoral pain (PFP). Methods: Eleven women with PFP were included in our pre/post design study. Participants were assessed before and after 12-week hip abduction exercise program. All participants performed 6 stair climbing repetitions, 3 sets of rope jumps over 30 s and 5 sets of 8 squats to standardize the physical activity level before data collection. We recorded the electromyographic activity from gluteus medius, vastus medialis (VM) and vastus lateralis (VL) for double-legged squat with and without isometric hip abduction. Additionally, participants were asked to perform a step-down test to assess objective function (maximum number of repetitions over 30 s) and completed a clinical evaluation. Results: Longer duration of VM (Mean difference [95% CI]) = -0.97 [-1.48; -0.46], ES [effect size] = 0.66) and VL (-0.81 [-1.35; -0.27], ES = 0.54) were found after the hip abduction exercise program only for free squat. The participants also performed higher number of step-down repetitions (-3.54 [-5.84; -1.25], ES = 1.03) after the hip abduction exercise program and showed improvement in pain reports. Conclusion: A 12-week hip abduction exercise program changed the quadriceps muscle activation pattern and improved pain and objective function of women with PFP. The exercises promoted a longer VM and VL activation duration. Additionally, they promoted a clinical improvement in the patients with PFP.

Resumo em Inglês:

Abstract Aims: This study aimed to evaluate the kinetics of lactate and lactate dehydrogenase B (LDH-B) protein levels as well as the maximum effort capacity of spontaneously hypertensive rats (SHRs) with experimental acute myocardial infarction (AMI). Methods: thirty-two SHRs were divided into (n=8/group): S (sham), SE (sham+exercise), I (AMI), and IE (AMI+exercise). A maximum exercise test (treadmill) was evaluated before AMI or sham surgery. Echocardiography was performed 48h after the surgery. Lactacidemia was assessed at rest and during an intense exercise bout (48h after echocardiography). A two-way ANOVA followed by the post-hoc (Bonferroni) test was used, p<0.05. Results: In the end, the heart was removed for analysis of LDH-B. AMI resulted in lower cardiac output (S vs I: ∆51.3%, p<0.001), ejection fraction (S vs I: ∆60.5%, p<0.001) and shortening fraction (S vs I: ∆72.4%, p<0.001). The IE showed a reduction in exercise capacity when compared with pre-AMI values (1.50±0.1 vs 1.38±0.2 km/h; p=0.030) but not when compared with SE (1.41±0.3 vs 1.38±0.2 km/h; p=0.208). During the exhaustion exercise session, IE group showed lower lactacidemia at 12 min (∆9.7%, p=0.042) and 18 min (∆8.3%, p=0.038). No differences were observed in the protein level of LDH-B among the groups (p=0.573). However, when the AMI factor was considered alone, LDH-B expression was lower (sham vs AMI rats, p=0.040). Conclusion: LDH-B protein levels in cardiac tissue appear to be associated with AMI only. Furthermore, AMI induced a reduction in exercise capacity but did not affect lactacidemia during the intense exercise bout.

Resumo em Inglês:

Abstract Aim: The aim was to evaluate the effect of sodium bicarbonate supplementation (NaHCO3) in repetition performance, perceived exertion and blood lactate concentration. Methods: Fourteen trained men (25.14 ± 3.5 years; 85.83 ± 10.18 kg; 1.78 ± 0.06 m; 26.88 ± 3.17 kg/m2) realized two upper-body resistance exercise sessions consisting of 15-RM load and 1 minute of the interval, combining bicarbonate supplementation (BS) or Placebo conditions. Results: After the ANOVA analysis, no difference was found on the total number of repetitions during the session on both BS and Placebo condition (p = 0.11). However, a greater number of total of repetitions on the machine chest fly exercise for BS vs. Placebo condition (p = 0.04) was observed. The perceived exertion increased regardless of the supplementation condition (p < 0.0001). Additionally, for the blood lactate was observed significant increases in BS vs. Placebo condition in the post verification (p = 0.013), corroborated for a bigger area under the curve (AUC) on the BS compared to Placebo (p = 0.026) condition. Conclusion: In conclusion, sodium bicarbonate supplementation was not able to improve performance during a resistance exercise session, except for the single-joint exercise performed with high values of perceived exertion, not altering the perceived exertion, and blood lactate between protocols.

Resumo em Inglês:

Abstract Aims: to evaluate how the act of holding a tennis racket influences the application of forces in the handrim during manual wheelchair propulsion at a self-selected comfortable speed and sprint. Methods: A case study was conducted with an experienced wheelchair tennis player who propelled the wheelchair in a straightforward trajectory at two different velocities (self-selected comfortable speed and sprint) in two different conditions (freehand and holding the racket). Kinetic and temporal data of the pushes were obtained with the SmartWheel system attached in substitution to the conventional rear wheel at the dominant side of the player. Results: holding the racket affects the propulsion pattern mainly when an accelerated movement is required (sprint). Compared to the propulsion at a self-selected speed, propelling the chair as fast as possible with the racket in hands resulted in lower total and tangential forces on the handrim, and decreased push time and increased push frequency. Conclusion: Such influence on both kinetic and temporal propulsion impact the mechanical efficiency of the manual wheelchair propulsion, which may, ultimately, affect the sport´s performance. Special attention should be directed to the propulsion training with the racket in maneuvers and motions that are characteristic of the wheelchair tennis match in an attempt to provide the athlete with proper technique for optimal propulsion efficiency and sports performance.

Resumo em Inglês:

Abstract Aim: This study aimed to analyze the level of technical-tactical performance of female basketball base players, considering the association between the game actions and the specific positions performed by the players. Methods: Twenty-six players from a basketball club in the state of Santa Catarina (Brazil) participated. The performance was analyzed with the aid of the Individual Technical-Tactical Basketball Performance Assessment Instrument (IAD-BB). The statistical treatment involved the use of descriptive (simple and percentage frequency) and inferential (Pearson’s Chi-square test, Cramer’s V coefficients, adjusted residuals), adopting a 5% significance level for the interpretation of the results. Results: It was found a statistically significant association of the functions performed by the players with the actions of reception, dribble, throw, marking and rebound block. The guards performed better in the reception, dribble and clearing actions, the centers were better in rebound block, throw and clearing, while the forwards showed better performance in clearing and rebound block. Conclusion: It is concluded that the analysis of tactical-technical performance, considering the actions and specific positions of female players, is necessary for a better understanding of the factors that influence their performance in the game. Results are discussed with the literature and suggestions are made for future research in order to expand the quantity and quality of evidence in sports performance analysis.

Resumo em Inglês:

Abstract Aim: This study aimed to verify whether different stage length affects the intensity of the Blood Glucose Threshold (BGT), and the agreement between evaluators for BGT determination. Methods: Fourteen subjects attended the laboratory during the first session to perform anthropometric measures and become familiar with procedures. In the following three sessions, subjects performed an incremental test on the ergometer bicycle and in each test a different protocol was performed in randomized order (1, 3- and 5-min stage) to identify BGT. Three different evaluators determined the BGT. Results: Our data show that the BGT is stage length-dependent (1, 3- and 5-min; P<0.0001). The intraclass correlation coefficient showed that there was a strong correlation among evaluators for all protocols (ICC = 0.8 to 1 min; ICC = 0.8 to 3 min; and ICC 0.9 to 5 min). However, one evaluator determined the BGT at a higher intensity than others. The peak load was lower at long stage length. Conclusion: We concluded that stage length influences the BGT intensity determination. The BGT presents a good agreement among evaluators. However, a minimum of two evaluators is needed for BGT determination. The peak load is affected by stage length.

Resumo em Inglês:

Abstract Aims: To investigate the effects of an exercise program with action observation versus conventional physical therapy on upper limb functionality in chronic stroke subjects. Methods: In this controlled clinical trial, thirty-five stroke patients were divided into two groups, experimental group, comprising eighteen patients that received an exercise program with action observation; and a control group, comprising seventeen patients that received conventional exercise program. Functional recovery was assessed with the Fugl-Meyer Scale, manual dexterity was assessed with the Box and Blocks test, and the functional use of the affected upper limb was assessed with the Reach scale. Evaluations occurred at baseline, after three and six months of intervention. Statistical analyses were performed with the Repeated Measures Analysis of Variance and the Friedman test, under a 5% significance. Results: Both interventions provided benefits to chronic stroke patients. Exercise program with action observation presented better results on motor recovery (p < 0.001) and functional use of the affected limb (p < 0.001) when compared with conventional therapy. Both treatments improved the manual dexterity of the participants (p = 0.002), but in a similar way (p = 0.461). Conclusion: A six-month exercise program with action observation provided benefits on functional recovery and functional use of an affected upper limb in chronic stroke patients. Exercises with action observation demonstrated the potential for improving affected upper limb in chronic stroke patients.

Resumo em Inglês:

Abstract Aims: To analyze the effects of physical therapy procedures in reducing acute pain in runners. A second aim was to investigate the impact of weather conditions on the number of physical therapy visits during the Ultramarathon Rio24 h. Methods: This retrospective study was performed at the Physical Education Center Admiral Adalberto Nunes (CEFAN). Medical records were analyzed. The participants were athletes that were attended by the Physical therapy team during three editions of the Ultramarathon Rio24 h. The variation in the Visual Analog Scale score (VAS) before and after each treatment were analyzed. After the evaluation procedure, another professional had decided the best procedure for the assessed athlete: massotherapy, cryotherapy by immersion, or stretching. An ANOVA was performed to assess which procedures produce pain reduction immediately after the procedure. Results: A total of 1,995 care services (228 in women) were performed in 602 athletes (84 women). Analyzing the treatments that used only one modality (n = 512 visits), the final pain decreased significantly over the initial pain for the three treatments. It was verified that massotherapy, cryotherapy, and stretching promote significant intragroup differences, with no intergroup differences. The environmental conditions were not associated with the number of visits. Conclusion: Massotherapy, cryotherapy, and stretching are effective treatments for acute pain reduction during ultramarathons. The weather conditions are not associated with the number of physical therapy visits.

Resumo em Inglês:

Abstract Aims: This cross-sectional study investigated the predicting role of perfectionism on the perception of team cohesion among futsal athletes. Methods: One hundred and forty of futsal athletes (24.8±4.9 years) were included who participated of a Brazilian Amateur Cup in 2017. The instruments were Sport Multidimensional Perfectionism Scale-2 and Group Environment Questionnaire. Data analysis was conducted through the Pearson Correlation and Multiple Regression Analysis (p < .05). Results: The data showed the following significant correlations (p < .05): Group-Integration Task (GI-T) with Organization-Personal Standards (OPS) (r = .27) and Doubts About Action (DAA) (r = -.24); Group-Integration Social (GI-S) with OPS (r = .18); Individual Attraction to Group-Task (IA-T) with OPS (r = .25); Individual Attraction to the Group-Social (IA-S) with OPS (r = .17). Multiple regression showed that OPS showed a positive association with task cohesion dimensions (GI-T and IA-T), while DAA showed a negative association with both social (GI-S and IA-S) and task (GI-T) cohesion. Further, perceived parental pressure showed positive association with GI-S. Conclusion: our findings show that perfectionistic striving could be a positive predictor of task cohesion, while perfectionistic concerns might predict negatively both social and task cohesion.

Resumo em Inglês:

Abstract Aims: To understand how participating in a Nutrition & Health Education program (NHEP) affected the way rhythm gymnasts and their coaches perceive their food practices. Methods: Qualitative study portraying a case study of a NHEP specifically designed for a rhythm gymnastic team. The NHEP was conducted at the training facilities. Fourteen rhythm gymnasts, consisting of the team that represents a city in the state of São Paulo, Brazil, and their two coaches participated in the study. Athletes and coaches were interviewed about their perceptions and food practices before and after a 9-month NHEP designed specifically for them. Recorded interviews were transcribed verbatim. Two categories emerged from the discourses and were analyzed using the content analysis: “beliefs and feeding practices” and “construction of a positive relationship with food”. Results: Athletes reported changes in their food practices related to the themes discussed with them in the NHEP, such as daily breakfast intake, higher intake of fruits, vegetables, milk products, and wholegrain foods. Conclusion: The NHEP allowed specific demands of the athletes to be identified and addressed, generating awareness and motivation to positive changes in eating practices.

Resumo em Inglês:

Abstract Aim: This study aimed to test the influence of functional improvements in volleyball skills performance. Methods: Twenty-eight amateur female volleyball players were assigned to Skill (S: n = 14, 19.5 ± 4.6 yrs; 169.7 ± 7.2 cm; 62.9 ± 12.7 kg) or Skill and Strength/Power (S+SP: n = 14; 18.6 ± 3.5 yrs; 169.7 ± 5.1 cm; 63.3 ± 9.2 kg). S+SP performed eight weeks of volleyball and conditioning training. S maintained only volleyball training. Functional variables (i.e. strength, power, and agility measures) and volleyball skills performance in a game-situation context were assessed before and after training. Results: 1-RM squat and bench press, time at modified agility T-test, peak power at bench throw and medicine-ball throw distance improved for the S+SP (p<0,05). S group increased only in medicine-ball throw distance (p<0.05). There were no differences between groups in the functional variables tested (p>0.05). The probabilities of a perfect set and an attack ‘kill’ in S+SP improved (¶>0.90). Changes from pre to post-training were higher in S+SP than in S for a perfect set, ‘stuff block’ and defense with displacement (¶>0.90). Conclusion: Our data suggest that functional improvements may positively affect volleyball skills performance. Although functional variables revealed only within-group changes, S+SP produced greater improvements in skill performance than S, supporting the use of conditioning training to improve volleyball performance.

Resumo em Inglês:

Abstract Aims: The aim is to identify the representations of the main actors involved in the Fernanda Keller Project on the internal and external environments of the organization. Methods: Data were collected through observation, in-depth interviews, semi-structured interviews and focus groups. Results: Findings points to the great difficulty of the interaction between the Project and the city hall, from a certain moment. In the internal environment, stand out the value attributed to the Project in the social transformation of young people, community, and professionals directly or indirectly involved in the actions. Conclusion: The project has achieved success and social impact. However, the participation of the city hall of Niterói has diminished with the passage of time. Despite the difficulties encountered, the project has found new partners in the private sector. The initiative to seek other means to obtain resources was fundamental to the project's maintenance. This posture has led everyone to a positive and involving message that permeates all the reports that this study analyzed.

Resumo em Inglês:

Abstract Aim: To analyze the association between lifestyle and signs of DCD in children aged 7 to 10. Methods: A total of 93 schoolchildren aged 7 to 10 were recruited for this study. Developmental Coordination Disorder Questionnaire (DCDQ), Movement Assessment Battery for Children – Second edition (MABC-2) and the Inventory of Lifestyle in Childhood and Adolescence (ILCA) were used. Lifestyle was analyzed with basis on specific tasks performed frequently or infrequently at home and outdoor, considering children with positive and negative DCD signs. Results: Only the item “performing household tasks” showed a significant association (p = 0.04) between groups. Children with DCD signs displayed a more infrequent behavior (73.1 %) in performing such tasks when compared to those without (26.9 %). Conclusion: Children with DCD signs presented a more sedentary behavior, expressed specifically in the less frequent performance of household tasks. The result may be explained by parental involvement in this sort of task. Further studies, however, are needed in order to broaden this understanding.

Resumo em Inglês:

Abstract Aim: Swimming races outside swimming pools take place all over the world, but studies focusing on their physiological aspects are scarce. In fact, rules forbid any direct contact with swimmers during sanctioned events. This case report presents heart rate responses of a master athlete during an ultra-endurance open water solo swim and analyzes results based on a prior cardiopulmonary exercise test. Methods: The swimmer performed a cardiopulmonary exercise test on a treadmill, following a ramp protocol, with continuous electrocardiogram recording. The athlete performed a 36 km swimming race with continuous heart rate recording. Description of swimming heart rate accordingly to heart rate training zones and correlation analysis between HR and swim speed was assessed. Results: The athlete swam the 36 km event in 11 hours, 16 minutes and 15 seconds. Most of the swim time was spent in training zone 3 (55%), and only 2% of race time was spent in zone 5. Swimming speed (3.2 ± 0.7 km/h) failed to correlate with HR during the event (r2 = 0.1334, p > 0.05). Conclusion: Although HR did not correlate with swimming speed it successfully indicated exercise intensity during this 36 km event. These results can be used in the preparation and monitoring of other solo long-distance swimmers.

Resumo em Inglês:

Abstract Aim: This study aimed to present the conceptual, procedural, and attitudinal knowledge of the trail guides (TG) in the Serra da Capivara National Park (SCNP) and Caparaó National Park (CNP). Results: Seventy-nine TGs participated in this descriptive-exploratory research, with a qualitative approach, representing 84% (n = 40) of CNP guides and 80% (n = 39) of SCNP guides. Conclusions: The evidence describes the conceptual, attitudinal, and procedural dimensions displayed before and during trail-walking, with differences in conceptual knowledge, discrepancies in procedural knowledge, and equality in attitudinal aspects. The importance of the participation of the area of physical education was highlighted in the training of TGs, alongside the need to include didactic-pedagogical content, environmental education, exercise physiology, movement biomechanics, flora, fauna, notions of minimal or desirable impact, and first aid.

Resumo em Inglês:

Abstract Aims: The objective was to estimate the prevalence and the factors of behaviors of provocation and control of the weight associated with dissatisfaction with the body image among adolescents. Methods: Cross-sectional study with 580 adolescents (11 to 17 years old) from Criciúma, Brazil. The body image was evaluated by the silhouettes scale and the behaviors of provocation and weight control by questionnaires. A multinomial logistic regression was used (p ≤ 0.05). Results: Of the total number of adolescents, 48.6% were dissatisfied with being overweight (male 47.9%, female 49.3%) and 22.9% dissatisfied with thinness (male 23.8%, female 22.1%). Male adolescents who were dissatisfied with being overweight were more likely to be joked and laughed at because of their appearance and lower chances of being nicknames due to their size or body weight, while those who were unsatisfied with being thin were more likely to joke and laughter because of the appearance, compared to satisfied. Female adolescents who were dissatisfied with being overweight were more likely to be laughed at because they were uncoordinated and without food for 24 h, while those who were unsatisfied with being thin were less likely to be joking and laughing because of their appearance and higher chances to be the targets of laughter because they are uncoordinated, compared to those that are satisfied. Conclusion: The dissatisfaction with body image was associated with different behaviors of provocation and weight control according to sex.

Resumo em Inglês:

Abstract Aims: The influence of fluid replacement, realized during and after the exercise on individuals with coronary artery disease (CAD) remains poorly understood. To investigate the influence of hydration on cardiac autonomic modulation, cardiorespiratory parameters and perceived exertion and discommodity, of coronary heart patients submitted to cardiac rehabilitation (CR) session. Methods: This cross-over clinical trial, will recruit 31 adults with more than 45 years old, participants of a cardiovascular rehabilitation program, with CAD diagnosis. The participants will be submitted to an experimental protocol composed of three phases: I) Maximal stress test; II) Control protocol (CP); and III) Hydration protocol (HP). The CP and HP will consist of 10 min of rest in a supine position, 15 min of warming, 40 min of treadmill exercise, 5 min of cooling down and 60 min of rest in a supine position. In the HP, the participants will be hydrated with mineral water, based on the bodyweight reduction of the CP. The water intake will be divided into eight equal portions, offered during the treadmill exercise and recovery period. On CP and HP will be evaluated linear and nonlinear indices of heart rate variability, the heart rate, systolic blood pressure, diastolic blood pressure, respiratory rate, oxygen partial saturation, perceived exertion and discommodity on specifics moments. Conclusion: The results of this study will allow us to identify if the proposed protocol will be able to positively influence the outcomes and, consequently, if could be implement in the clinical practice.

Resumo em Inglês:

Abstract Introduction: the biopsychosocial (BPS) model from the perspective of the International Classification of Functioning (ICF) agrees with the current theories regarding child development. They state the interdependence between the individual's relations, environment and received stimuli. The early interventions, particularly in the aquatic environment (AE), present gaps concerning their systematization, above all in their being in accordance with the ICF. Objectives: to describe an ICF-based aquatic early intervention program, named KITE, for the neuropsychomotor development (NPMD) of typical, at-risk and/or delayed babies 4 to 18 months old. Methods: the KITE is a program systematized on the AE, centered on the family and the daycare environment; it takes place twice a week, lasting for 4 weeks, in 45- to 60-minute sessions. The assessments and interventions are systematized by following the ICF. For the main outcome on the NPMD, the Alberta Infant Motor Scale (AIMS) and the Denver Developmental Screening Test II (DDST-II) are used, and as the secondary outcome on the stimulation received, quality of life and aquatic skills, the Affordances in the Home Environment for Motor Development - Infant Scale (AHEMD-IS), the Pediatric Quality of Life Inventory (PedsQL™) and the Aquatic Functional Assessment Scale – Baby (AFAS Baby) are used, respectively. Conclusion: This study has presented tools for the application of a clinical trial through the KITE for the NPMD of babies, systematized and based on the BPS perspective of the ICF, and discussed according to the neuroplastic evidence of the child development.