Banca de DEFESA: JÉSSICA DINIZ CAVALCANTI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JÉSSICA DINIZ CAVALCANTI
DATA : 24/02/2017
HORA: 08:30
LOCAL: Departamento de Fisioterapia
TÍTULO:

Analysis of performance and muscular electrical activity in asthmatics during different exercise tests

PALAVRAS-CHAVES:

Asthma; Eletromyography; Exercise Test.

PÁGINAS: 44
GRANDE ÁREA: Ciências da Saúde
ÁREA: Fisioterapia e Terapia Ocupacional
RESUMO:

Asthmatic individuals show decreased functional activities due to symptoms as dyspnea and fatigue, mainly. Symptoms lead to impairment of respiratory and peripheral muscular function due to metabolic change, oxidative capacity reduction and a possible modification of muscle activation during activities. As these muscles are activated during daily activities in this population there are still a small number of studies. Thus, the aim of this study was to analyze the performance and behavior of electrical activity of respiratory and peripheral muscles in two exercise tests: Incremental Shuttle Walking Test (ISWT) and Glitter-ADL test in asthmatic subjects comparing with non asthmatic individuals.

This is an observational, analytical study that included patients with clinical diagnosis of Asthma, of both gender, aged between 20 and 50 years, with controlled disease, body mass index (BMI) below 30 kg / m². Non smokers and non asthmatic subjects matched for age, gender and BMI were also enrolled. After anthropometric and pulmonary function assessment, all participants were submitted to two exercise tests: ISWT and Glitter-ADL test. During the tests, electrical activity was evaluated through surface electromyography (EMGs) of sternocleidomastoid (SCM), scalene (ESC), rectus abdominis (RA) and rectus femoris (RF) muscles for ISWT and ESC, RA, RF and the middle deltoid (DM) muscle for Glitter-ADL test. Electromyographic signal was recorded in both tests at the moments: baseline, during the test, immediately post test and recovery. For root mean square processing (RMS) was applied a high pass filter of 20Hz, smoothing, with RMS algorithm, fullwave rectification type and a filter to reduce cardiac signals. Frequency spectrum analysis was calculated through the median frequency. Statistical analysis was performed using the statistical program GraphPad Prism version 6.0, a p value <0.05was set. Shapiro-Wilk test was used to test data normality. Intergroup analysis of cardiovascular, respiratory and Borg variables (dyspnea and fatigue) at the end of each test used Mann-Whitney test. For intergroup analysis of muscles electrical activity it was performed the unpaired T test for the ISWT and Mann-Whitney test for the Glitter-ADL test.

Sixteen asthmatic subjects were enrolled in the Asthma Group (AG) and ten non-asthmatic subjects in Control Group (CG). AG vs CG comparison  showed: age: 35.31 ± 11.31 vs 34.70 ± 15.61, BMI  kg / m2: 24.49 ± 4.15 vs 22.34 ± 1.797, FEV1%: 78.74 ± 17.41 vs 90.84 ± 7.74 (p <0.01), FEV 1 / FVC% predicted: 84.46 ± 12.53 vs. 100.6 ± 8.43 (p <0.01), respectively . There was no significant difference in reported symptomatology of dyspnea and lower limbs fatigue, cardiorespiratory variables and inspiratory capacity when the groups were compared at the end of each test. Regarding ISWT performance, AG walked a significant shorter distance compared to CG (p <0.05). For the Glitter-ADL test, AG took  almost 1 minute more to complete the test compared to CG (p <0.05). EMG analysis during ISWT showed an increase of electrical activity of the muscles evaluated in a coordinated and similar way, in both groups, with a significant difference only for SCM of CG in 100% of the test (p <0.05). In Glitter-ADL test there was no significant difference in the activation of ESC and DM muscles when AG was compared to CG. RA and RF muscles showed greater activation in the CG, however without significant difference. There was no significant difference in the slope analysis of the median frequency between the groups in both tests.

Our results suggest that during the ISWT and Glitter-ADL exercise tests, asthmatic patients show coordinated electromyographic activity similar to healthy individuals, however with lower performance in both tests.

MEMBROS DA BANCA:
Externo ao Programa - 2211046 - LUCIEN PERONI GUALDI
Externo à Instituição - RUBENS ALEXANDRE DA SILVA JUNIOR - UNOPAR
Presidente - 5566309 - VANESSA REGIANE RESQUETI FREGONEZI