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Search Results: 1 - 10 of 53399 matches for " Carlos Bolli Mota "
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Lombalgia e o equilíbrio corporal de atletas da sele??o Brasileira feminina de canoagem velocidade
Lemos, Luiz Fernando Cuozzo;Teixeira, Clarissa Stefani;Mota, Carlos Bolli;
Revista Brasileira de Cineantropometria & Desempenho Humano , 2010, DOI: 10.5007/1980-0037.2010v12n6p457
Abstract: low back pain has been shown to interfere with body stability. in sports, the study of these relationships is important because the bouts may influence the results of training and competitions. high rates of injury to the lumbar region have been reported for elite female canoe paddlers. the objective of this study was to assess the influence of low back pain on body balance in female athletes of the brazilian flatwater canoe team. athletes with low back pain (in the last week) were compared to those without pain in the two-leg and single-leg stance, with the eyes open and closed, using an accusway plus force platform (advanced mechanical technology, inc.). the variables analyzed were the amplitude of the pressure center in the anteroposterior direction (copap) and medial-lateral direction (copml). the results showed higher body instability for athletes with low back pain. for copml, no significant difference between the two groups was observed for only one condition (single-leg stance) (p = 0.901), and for copap, no significant difference was observed for two conditions (p = 0.414 and p = 0.567), i.e., single-leg stance and eyes closed. in conclusion, low back pain was harmful to body balance in high-level female canoe paddlers.
Low back pain and corporal balance of female brazilian selection canoeing flatwater athletes
Luiz Fernando Cuozzo Lemos,Clarissa Stefani Teixeira,Carlos Bolli Mota
Revista Brasileira de Cineantropometria e Desempenho Humano , 2010,
Abstract: Low back pain has been shown to interfere with body stability. In sports, the study of these relationships is important because the bouts may influence the results of training and competitions. High rates of injury to the lumbar region have been reported for elite female canoe paddlers. The objective of this study was to assess the influence of low back pain on body balance in female athletes of the Brazilian flatwater canoe team. Athletes with low back pain (in the last week) were compared to those without pain in the two-leg and single-leg stance, with the eyes open and closed, using an AccuSway Plus force platform (Advanced Mechanical Technology, Inc.). The variables analyzed were the amplitude of the pressure center in the anteroposterior direction (COPap) and medial-lateral direction (COPml). The results showed higher body ins-tability for athletes with low back pain. For COPml, no significant difference between the two groups was observed for only one condition (single-leg stance) (p = 0.901), and for COPap, no significant difference was observed for two conditions (p = 0.414 and p = 0.567), i.e., single-leg stance and eyes closed. In conclusion, low back pain was harmful to body balance in high-level female canoe paddlers.
TRAINING LEVEL, PERCEPTION AND BILATERAL ASYMMETRY DURING MULTI-JOINT LEG-PRESS EXERCISE
Felipe Pivetta Carpes,Rodrigo Rico Bini,Carlos Bolli Mota
Brazilian Journal of Biomotricity , 2008,
Abstract: This study was designed to investigate the training level, perception and bilateral asymmetry of force applied on the pedals of a leg-press machine during multi-joint leg-press exercise. Force data were acquired throughout the exercise by means of an FSCAN system with sensitive insoles adapted to the right and left pedals of a leg-press device and used to determine the bilateral asymmetry. Perception of bilateral asymmetry was evaluated by means of an inventory including two closed questions. Two groups according to their training experience were considered: subjects adapted (n=8), and trained (n=8). The results suggest that trained subjects present a smaller asymmetry index and a better perception of bilateral asymmetries. Trained subjects presented better perception of bilateral asymmetries, when it occurs during the exercise, than adapted subjects. The training seems to influence the perception and reduce the bilateral asymmetries during the leg-press multi-joint exercise.
Influência dos sistemas sensoriais na manuten??o do equilíbrio em gestantes
Mann, Luana;Kleinpaul, Julio Francisco;Teixeira, Clarissa Stefani;Mota, Carlos Bolli;
Fisioterapia em Movimento , 2011, DOI: 10.1590/S0103-51502011000200013
Abstract: objective: there are a number of factors interfering with the performance of balance, however the importance given to each of the sensory systems during pregnancy is still unknown. the aim of this study was to investigate the influence of the visual, somatosensorial and vestibular system on the balance in the different stages of pregnancy. methods: for the accomplishment of this study they were appraised two groups, being: group of pregnant women (gg), and non pregnant women's group (gc). the corporal balance was measured by the six conditions of the sensorial organization test (tos), using a force platform amti?. the variables related with the maintenance of the corporal stability were the displacement of the center of force in the anterior-posterior (copap) and medium-lateral directions (copml). for comparison between groups and between the sensory tests a one-way anova was used, and to identify the differences the post hoc hsd tukey test was used. the significance level adopted for all tests was 5%. results: differences in body movements are more obvious from the second trimester of pregnancy, and the sensory manipulation is shown as an aggravating factor on them. conclusion: the process of pregnancy influences the balance in both directions evaluated (copap and copml) and body oscillations increase with the difficulty of the task (sensory manipulation) and the progress of pregnancy.
Altera??es biomecanicas durante o período gestacional: uma revis?o
Mann, Luana;Kleinpaul, Julio Francisco;Mota, Carlos Bolli;Santos, Saray Giovana dos;
Motriz: Revista de Educa??o Física , 2010, DOI: 10.5016/1980-6574.2010v16n3p730
Abstract: the purpose of this review was to analyze the studies that investigated the behavior of the kinetics and kinematics of human gait and posture control during pregnancy, and to verify the occurrence of falls. for this, a search was made for references in portuguese and english, using search engines: pubmed, sciencedirect, scopus, and pubmed pubmed central. original papers published from 1990 to 2009 (july) were considered when the main subject of discussion was the topic of interest. overall significant changes are observed on the kinetic and kinematic variables of gait and balance from the third trimester of pregnancy during this period the incidence of falls is also larger. there are many factors related to these changes, but the increase in body mass is the most important of these.
A influência dos sistemas sensoriais na plataforma de for?a: estudo do equilíbrio corporal em idosas com e sem queixa de tontura
Teixeira, Clarissa Stefani;Lemos, Luiz Fernando Cuozzo;Lopes, Luis Felipe Dias;Mota, Carlos Bolli;
Revista CEFAC , 2010, DOI: 10.1590/S1516-18462010005000110
Abstract: purpose: to analyze the responses of two groups of aged women (with and without dizziness complaints) under different sensorial conditions on a force platform. methods: to analyze the data used is a force platform amti or6-6 under a frequency of 100 hz. samples were collected in four different conditions, which are, as it follows: open eyes (oe), closed eyes (ce) only on the force platform, open eyes (oe) and closed eyes (ce) on a cushion of 20 cm thickness. the examined variables were the anterior-posterior center of power (copap), center of medium-strength side (copml), 95% of the ellipse area, length and speed of oscillation. comparisons were made between the group and between conditions within groups, through the test of duncan. results: results showed no differences among the groups in any variable, but the ce condition caused the greatest disruption as for the elderly women. conclusion: we may conclude that the increase in the difficulty imposed by the four assessed conditions, changed the body oscillation of the evaluated elderly women.
A influência dos sistemas sensoriais na plataforma de for a: estudo do equilíbrio corporal em idosas com e sem queixa de tontura Influence of sensorial systems on force plate: study of postural balance in aged women with and without dizziness complaints
Clarissa Stefani Teixeira,Luiz Fernando Cuozzo Lemos,Luis Felipe Dias Lopes,Carlos Bolli Mota
Revista CEFAC , 2010,
Abstract: OBJETIVO: analisar as respostas de dois grupos de idosas (com e sem queixa de tontura) submetidas a diferentes condi es sensoriais em uma plataforma de for a. MéTODOS: para a realiza o desse estudo utilizou-se uma plataforma de for a AMTI OR6-5 com uma frequência de aquisi o de 100 Hz. Foram realizadas coletas em quatro condi es distintas: olhos abertos (OA), olhos fechados (OF) sobre apenas a plataforma de for a, olhos abertos (OAA) e olhos fechados (OFA) sobre uma almofada de 20 cm de espessura. As variáveis analisadas foram o centro de for a antero-posterior (COPap), centro de for a médio-lateral (COPml), 95% da elipse da área, velocidade de oscila o e comprimento da oscila o.Compara es entre os grupos e entre as condi es dentro dos grupos, foram realizadas por meio do teste de Duncan. RESULTADOS: os resultados mostraram n o haver diferen as entre os grupos em nenhuma variável, porém a condi o OFA causou maiores perturba es no equilíbrio corporal das idosas. CONCLUS O: conclui-se que o aumento da dificuldade imposta pelas quatro condi es de testes, alterou a oscila o corporal das idosas avaliadas. PURPOSE: to analyze the responses of two groups of aged women (with and without dizziness complaints) under different sensorial conditions on a force platform. METHODS: to analyze the data used is a force platform AMTI OR6-6 under a frequency of 100 Hz. Samples were collected in four different conditions, which are, as it follows: open eyes (OE), closed eyes (CE) only on the force platform, open eyes (OE) and closed eyes (CE) on a cushion of 20 cm thickness. The examined variables were the anterior-posterior center of power (COPap), center of medium-strength side (COPml), 95% of the ellipse area, length and speed of oscillation. Comparisons were made between the group and between conditions within groups, through the test of Duncan. RESULTS: results showed no differences among the groups in any variable, but the CE condition caused the greatest disruption as for the elderly women. CONCLUSION: we may conclude that the increase in the difficulty imposed by the four assessed conditions, changed the body oscillation of the evaluated elderly women.
Effect of exhaustive exercise on the angular pedaling pattern: A preliminary study
Matheus Joner Wiest,Felipe Pivetta Carpes,Mateus Rossato,Carlos Bolli Mota
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: Considering biomechanical aspects such as kinematics, fatigue can be characterized as a loss of efficiency in maintaining a movement pattern, such as pedaling technique, during exercise. The objective of this preliminary study was to investigate the effects of 1-h exhaustive cycling exercise at intensity of 80% VO2max on pedaling technique. The pedaling technique was evaluated in four skilled mountain-bike cyclists by 2D kinematics. The main hypothesis of this study was that angular changes in response to fatigue would occur mainly in the ankle joint. After achievement of maximal oxygen uptake (VO2max), the cyclists were submitted to a submaximal protocol at intensity corresponding to 80% VO2max for 1 h. The cyclists were filmed throughout 10 complete consecutive crank cycles at intervals of 10 min. Images were acquired from the right lower limb and the hip, knee and ankle joint angles were measured after kinematic processing. The Shapiro-Wilk test, ANOVA and post-hoc Tukey HSD test were used for statistical analysis, with the level of significance set at 0.05. Statistical analysis showed a significant difference only for ankle kinematics after 40 min of exercise, with an increase in the range of motion from 20° at the beginning of exercise to 35° at the end of exercise. This result confirms the hypothesis proposed and suggests that only the ankle joint was affected by the exercise. The characteristics of ankle movement suggest that this joint plays a compensatory role in an attempt to maintain the pedaling technique and to sustain the exercise workload.
Kinetic characteristics of the gait of a musician carrying or not his instrument
Clarissa Stefani Teixeira,Fausto Kothe,érico Felden Pereira,Carlos Bolli Mota
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: The integrity of the locomotor system can be compromised by the transport of certain objects, especially when done in an inadequate manner. Due to their weight and size, the transport of musical instruments can contribute to body dysfunctions in musicians who frequently have to carry their instruments, influencing balance andbody posture. Thus, the soil reaction force was investigated during the gait of a musician carrying or not his instrument. Two AMTI (Advanced Mechanical Technologies, Inc.) platforms were used for kinetic data acquisition. A total of 40 measurements were obtainedfor gait and balance: 20 without carrying the instrument and 20 while carrying the instrument. The t test showed significant differences between the two situations for all variables analyzed. The results suggest that the locomotor system suffers alterationswhen carrying any kind of load, as was the case here in which the subject carried 7.75% of his own weight.
Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints
Juliano Dal Pupo,Ivon Chagas da Rocha Junior,Carlos Bolli Mota
Revista Brasileira de Cineantropometria e Desempenho Humano , 2008,
Abstract: The purpose of this study was to verify the kinematic behavior of young runners during 50 and 100m sprints andtheir blood lactate concentration at the end of these sprints. Kinematic analysis was performed on the speed curve andsome variables analyzed at the end of these runs. Fourteen individuals took part in this study, being 7 males (12.35 ± 0.83years) and 7 females (12.61 ± 0.70 years). The speed curve was constructed using the panning method. The remainingkinematic variables were measured using two-dimensional videography with a Peak Motus video camera operating at 180Hz. Blood samples were taken from the runners’ earlobes in order to assay lactate concentration. The results demonstratethat at both distances top speed is reached at 40m. This, however, corresponds to 80% of the distance of the 50m sprint,but just 40% of the 100m run. The significant differences in kinematic variables observed between the two sprints were:increased duration of the support phase in the males, decreased stride frequency among the females and lower averagespeed at the end of 100m in comparison to 50m, in all individuals. The highest blood lactate concentrations were observedafter the 100m run. It was concluded that there was greater loss of performance during 100m, based on the differencesbetween some kinematic variables and the major loss of speed. Moreover, despite lactate concentration being higher afterthis run, the values were still considered low, indicating a lack of anaerobic capacity in these individuals.
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