Juliano Coelho Arakaki

Efeitos na medida do ângulo Q com a contração isométrica voluntária máxima do músculo quadricipital

The purpose of this study was to analyze the difference between the angle of the quadriceps in symptomatic and asymptomatic individuals in two different examination situations, having the quadriceps relaxed and in a maximal voluntary isometric contraction (MVIC) through radiographic measurement, aiming to contribute to the assessment and treatment of patients with patelofemoral disorder (PFD). Through the standard radiological method twenty 21 years old mean women (40 knees) were assessed. All individuals were positioned supine using a U-podalic stabilizer, having their lower limbs relaxed, using a plumb film on the anterior tuberosity of the tibia. For the statistical analysis, the averages for the asymptomatic and symptomatic groups in a relaxed and MVIC status, as well as the Student’s t-test with p < 0.05 significance level were used. The mean values to the Q angle compared to the asymptomatic group were 17.15 o on relaxation, and 14.5 o on MVIC, while the asymptomatic group presented 21.45 o , and 15.8 o , respectively. The results in the equality analysis between the symptomatic and asymptomatic groups on the relaxed status attained a p = 0.004, and to the maximal voluntary isometric contraction, p = 0.29. Considering the data attained in the present study, it can be verified that in a relaxing status, there is a difference between the value of the Q angle among symptomatic and asymptomatic individuals, being found a higher value in the FPD bearers, while in a maximal isometric contraction of the quadriceps muscle no statistical difference was found in the present study, with a reduction in the angle in both groups.The purpose of this study was to analyze the difference between the angle of the quadriceps in symptomatic and asymptomatic individuals in two different examination situations, having the quadriceps relaxed and in a maximal voluntary isometric contraction (MVIC) through radiographic measurement, aiming to contribute to the assessment and treatment of patients with patelofemoral disorder (PFD). Through the standard radiological method twenty 21 years old mean women (40 knees) were assessed. All individuals were positioned supine using a U-podalic stabilizer, having their lower limbs relaxed, using a plumb film on the anterior tuberosity of the tibia. For the statistical analysis, the averages for the asymptomatic and symptomatic groups in a relaxed and MVIC status, as well as the Students t-test with p < 0.05 significance level were used. The mean values to the Q angle compared to the asymptomatic group were 17.15o on relaxation, and 14.5o on MVIC, while the asymptomatic group presented 21.45o, and 15.8o, respectively. The results in the equality analysis between the symptomatic and asymptomatic groups on the relaxed status attained a p = 0.004, and to the maximal voluntary isometric contraction, p = 0.29. Considering the data attained in the present study, it can be verified that in a relaxing status, there is a difference between the value of the Q angle among symptomatic and asymptomatic individuals, being found a higher value in the FPD bearers, while in a maximal isometric contraction of the quadriceps muscle no statistical difference was found in the present study, with a reduction in the angle in both groups.

Dor no ombro em pacientes com lesão medular

The spinal cord injury (SCI) is one of the most severe forms of disabling syndromes. Patients with SCI usually apply an excessive overload on the upper limbs, especially the shoulders, using them more frequently and in a greater range of activities when compared to healthy subjects. Moreover, the search for the improvement of the quality of life in the last years has led an increasingly number of SCI patients to practice physical activities. Many SCI patients use wheelchairs for functional locomotion and sports practice. However, this functional demand on shoulders joint may lead to a painful picture, interfering on these patients daily activities. With the improvements on technology and healthcare life expectancy for SCI patients has been increased. Since then, issues regarding quality of life and age-related diseases are very important for this population. The purpose of this paper was to better understand shoulder pain in SCI patients by reviewing available literature.

Análise da freqüência mediana do sinal eletromiográfico de indivíduos com lesão do ligamento cruzado anterior em exercícios isométricos de cadeia cinética aberta e fechada

ABSTRACTAnalysis of the medium frequency of the electromyographicsignal of individuals with lesion of the anterior cruciate ligamentin isometric exercises of open and closed kinetic chain Subjects with injury of the anterior cruciate ligament (ACL) haveshown relevant functional alterations in the knee muscles. There-fore, it is extremely important to characterize these alterations, aswell as to emphasize an efficient rehabilitation protocol for thesesubjects and consequently return them to physical activities. Thepurpose of this study was to investigate the medium frequency(Fmed) of the electromyographic signal in ACL subjects with le-sions during isometric exercises in open (OKC) and closed kineticchain (CKC). Forty subjects (with and without lesion) performedknee extension during maximal voluntary isometric contraction onLeg Extension and Leg Press at 30o, 60o and 90o of knee flexion.The results showed smaller Fmed values for ACL deficient sub- Analise da frequencia mediana do sinal eletromiograficode individuos com lesao do ligamento cruzado anterior emexercicios isometricos de cadeia cinetica aberta e fechada

The effect of hip abduction on the EMG activity of vastus medialis obliquus, vastus lateralis longus and vastus lateralis obliquus in healthy subjects

Study designControlled laboratory study.ObjectivesThe purposes of this paper were to investigate (d) whether vastus medialis obliquus (VMO), vastus lateralis longus (VLL) and vastus lateralis obliquus (VLO) EMG activity can be influenced by hip abduction performed by healthy subjects.BackgroundSome clinicians contraindicate hip abduction for patellofemoral patients (with) based on the premise that hip abduction could facilitate the VLL muscle activation leading to a VLL and VMO imbalanceMethods and measuresTwenty-one clinically healthy subjects were involved in the study, 10 women and 11 men (aged X = 23.3 ± 2.9). The EMG signals were collected using a computerized EMG VIKING II, with 8 channels and three pairs of surface electrodes. EMG activity was obtained from MVIC knee extension at 90° of flexion in a seated position and MVIC hip abduction at 0° and 30° with patients in side-lying position with the knee in full extension. The data were normalized in the MVIC knee extension at 50° of flexion in a seated position, and were submitted to ANOVA test with subsequent application of the Bonferroni multiple comparisons analysis test. The level of significance was defined as p ≤ 0.05.ResultsThe VLO muscle demonstrated a similar pattern to the VMO muscle showing higher EMG activity in MVIC knee extension at 90° of flexion compared with MVIC hip abduction at 0° and 30° of abduction for male (p < 0.0007) and MVIC hip abduction at 0° of abduction for female subjects (p < 0.02196). There were no statistically significant differences in the VLL EMG activity among the three sets of exercises tested.ConclusionThe results showed that no selective EMG activation was observed when comparison was made between the VMO, VLL and VLO muscles while performing MVIC hip abduction at 0° and 30° of abduction and MVIC knee extension at 90° of flexion in both male and female subjects. Our findings demonstrate that hip abduction do not facilitated VLL and VLO activity in relation to the VMO, however, this study included only healthy subjects performing maximum voluntary isometric contraction contractions, therefore much remains to be discovered by future research

Effects in the Q angle measurement with maximal voluntary isometric contraction of the quadriceps muscle

The purpose of this study was to analyze the difference between the angle of the quadriceps in symptomatic and asymptomatic individuals in two different examination situations, having the quadriceps relaxed and in a maximal voluntary isometric contraction (MVIC) through radiographic measurement, aiming to contribute to the assessment and treatment of patients with patelofemoral disorder (PFD). Through the standard radiological method twenty 21 years old mean women (40 knees) were assessed. All individuals were positioned supine using a U-podalic stabilizer, having their lower limbs relaxed, using a plumb film on the anterior tuberosity of the tibia. For the statistical analysis, the averages for the asymptomatic and symptomatic groups in a relaxed and MVIC status, as well as the Student’s t-test with p < 0.05 significance level were used. The mean values to the Q angle compared to the asymptomatic group were 17.15 o on relaxation, and 14.5 o on MVIC, while the asymptomatic group presented 21.45 o , and 15.8 o , respectively. The results in the equality analysis between the symptomatic and asymptomatic groups on the relaxed status attained a p = 0.004, and to the maximal voluntary isometric contraction, p = 0.29. Considering the data attained in the present study, it can be verified that in a relaxing status, there is a difference between the value of the Q angle among symptomatic and asymptomatic individuals, being found a higher value in the FPD bearers, while in a maximal isometric contraction of the quadriceps muscle no statistical difference was found in the present study, with a reduction in the angle in both groups.The purpose of this study was to analyze the difference between the angle of the quadriceps in symptomatic and asymptomatic individuals in two different examination situations, having the quadriceps relaxed and in a maximal voluntary isometric contraction (MVIC) through radiographic measurement, aiming to contribute to the assessment and treatment of patients with patelofemoral disorder (PFD). Through the standard radiological method twenty 21 years old mean women (40 knees) were assessed. All individuals were positioned supine using a U-podalic stabilizer, having their lower limbs relaxed, using a plumb film on the anterior tuberosity of the tibia. For the statistical analysis, the averages for the asymptomatic and symptomatic groups in a relaxed and MVIC status, as well as the Students t-test with p < 0.05 significance level were used. The mean values to the Q angle compared to the asymptomatic group were 17.15o on relaxation, and 14.5o on MVIC, while the asymptomatic group presented 21.45o, and 15.8o, respectively. The results in the equality analysis between the symptomatic and asymptomatic groups on the relaxed status attained a p = 0.004, and to the maximal voluntary isometric contraction, p = 0.29. Considering the data attained in the present study, it can be verified that in a relaxing status, there is a difference between the value of the Q angle among symptomatic and asymptomatic individuals, being found a higher value in the FPD bearers, while in a maximal isometric contraction of the quadriceps muscle no statistical difference was found in the present study, with a reduction in the angle in both groups.

Analysis of the Figure-of-Eight method and volumetry reliability for ankle edema measurement

Edema’s measurements on ankle injuries are necessary as part of the evaluation and diagnostic check. The present study was designed to analyze the Figure-of-Eight method and volumetry measurements and check their intratest and intertest reliability. Twenty asymptomatic healthy male volunteers from 15 to 30 years of age, were randomly examined by three clinical examiners. Each examiner performed three measurements following each method. It was used standardized positioning and measurement techniques. The results showed reliability in both methods (ICC = 0.99). The Pearson product-moment correlation coefficients showed reproduction between examiners, where values of r = 0.91, r = 0.95 and r = 0.96, respectively were found. These findings suggest the Figure-of-Eight method and volumetry are reliable measurements.

Análise da confiabilidade do método Figura Oito e da volumetria para mensuração do edema de tornozelo

Edema’s measurements on ankle injuries are necessary as part of the evaluation and diagnostic check. The present study was designed to analyze the Figure-of-Eight method and volumetry measurements and check their intratest and intertest reliability. Twenty asymptomatic healthy male volunteers from 15 to 30 years of age, were randomly examined by three clinical examiners. Each examiner performed three measurements following each method. It was used standardized positioning and measurement techniques. The results showed reliability in both methods (ICC = 0.99). The Pearson product-moment correlation coefficients showed reproduction between examiners, where values of r = 0.91, r = 0.95 and r = 0.96, respectively were found. These findings suggest the Figure-of-Eight method and volumetry are reliable measurements.

Análise da translação anterior da tíbia, pico de torque e atividade eletromiográfica do quadríceps e isquiotibiais em indivíduos com lesão do ligamento cruzado anterior em cadeia cinética aberta

The aim of this study was to evaluated the anterior tibial translation (ATT), isometric peak torque and EMG activity in individuals with acl rupture performing isometric contraction in open kinetic chain in angle that provoke substantial ATT. It was evaluated 20 male subjects (31.1± 7.45 years) with acl total rupture and 20 control subjects (22.2 ± 3.15 years). Electromyography, arthrometric kt 1000 and isokinetic dynamometry was used to evaluate the quadriceps and hamstrings EMG activity, passive and active ATT and isometric peak torque respectively during three maximum isometric voluntary contractions at 30 degrees of knee flexion. The results demonstrated that the passive and active ATT is significant greater in knees with acl rupture compared with the contralateral knees, dominant and non dominant knees of the control group. However the active ATT values were greater than the passive ATT. There is no statistic significant differences between groups concerning quadriceps and hamstring EMG activity and in the peak torque produced during the motor task requested. The results of this study demonstrated that individuals with acl rupture had similar behavior compared with normal knees in relation to isometric peak torque and motor control despite the different arthrokinematics of the tibiofemural joint observed in injured knees.

Analysis of the medium frequency of the electromyographic signal of individuals with lesion of the anterior cruciate ligament in isometric exercises of open and closed kinetic chain

ABSTRACTAnalysis of the medium frequency of the electromyographicsignal of individuals with lesion of the anterior cruciate ligamentin isometric exercises of open and closed kinetic chain Subjects with injury of the anterior cruciate ligament (ACL) haveshown relevant functional alterations in the knee muscles. There-fore, it is extremely important to characterize these alterations, aswell as to emphasize an efficient rehabilitation protocol for thesesubjects and consequently return them to physical activities. Thepurpose of this study was to investigate the medium frequency(Fmed) of the electromyographic signal in ACL subjects with le-sions during isometric exercises in open (OKC) and closed kineticchain (CKC). Forty subjects (with and without lesion) performedknee extension during maximal voluntary isometric contraction onLeg Extension and Leg Press at 30o, 60o and 90o of knee flexion.The results showed smaller Fmed values for ACL deficient sub- Analise da frequencia mediana do sinal eletromiograficode individuos com lesao do ligamento cruzado anterior emexercicios isometricos de cadeia cinetica aberta e fechada

Análisis de la frecuencia media de la señal eletromiográfica de individuos con lesión del ligamento cruzado anterior en ejercicios isométricos de cadena cinética abierta cerrada

ABSTRACTAnalysis of the medium frequency of the electromyographicsignal of individuals with lesion of the anterior cruciate ligamentin isometric exercises of open and closed kinetic chain Subjects with injury of the anterior cruciate ligament (ACL) haveshown relevant functional alterations in the knee muscles. There-fore, it is extremely important to characterize these alterations, aswell as to emphasize an efficient rehabilitation protocol for thesesubjects and consequently return them to physical activities. Thepurpose of this study was to investigate the medium frequency(Fmed) of the electromyographic signal in ACL subjects with le-sions during isometric exercises in open (OKC) and closed kineticchain (CKC). Forty subjects (with and without lesion) performedknee extension during maximal voluntary isometric contraction onLeg Extension and Leg Press at 30o, 60o and 90o of knee flexion.The results showed smaller Fmed values for ACL deficient sub- Analise da frequencia mediana do sinal eletromiograficode individuos com lesao do ligamento cruzado anterior emexercicios isometricos de cadeia cinetica aberta e fechada