Banca de QUALIFICAÇÃO: JÉSSICA DINIZ CAVALCANTI

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : JÉSSICA DINIZ CAVALCANTI
DATE: 22/02/2021
TIME: 09:00
LOCAL: Vídeo Conferência
TITLE:

Electromyographic activity of respiratory and peripheral muscles in chronic respiratory diseases during the Incremental Shuttle Walking Test. 

KEY WORDS:

respiratory muscles; respiratory physiology; exercise test; electromyography; respiratory tract diseases.

PAGES: 52
BIG AREA: Ciências da Saúde
AREA: Fisioterapia e Terapia Ocupacional
SUMMARY:

Aim: The main objective of the present study was to evaluate and electrical activity of the sternocleidomastoid (ECOM), scalene (ESC), and rectus femoris (RF) muscles, through surface electromyography (EMGs), during the Incremental Shuttle Walking Test (ISWT), in individuals with chronic and healthy respiratory diseases. Methods: This is a case-control study. Seventeen individuals with the clinical diagnosis of asthma (Asthma group) (age: 34.76 ± 11.18; FEV1%: 91.41 ± 13.6) and 15 with COPD (COPD group) (age: 65.6 ± 7.84; FEV1%: 63.46 ± 13.73) and matched with healthy subjects (matched Control group) by age, sex, and body mass index. The EMGs of the ECOM, ESC, and RF muscles were recorded during the evaluation of the exercise capacity by ISWT. The electrical signals were analyze in the time and frequency domains to extract, respectively, the signal amplitude data, in 3 moments of the ISWT, and the power spectrum density, throughout the test. Preliminary results: The distance covered in the ISWT was significantly shorter for the Asthma group compared to the respective paired Control group (p = 0.0007). There were no significant differences between the COPD group and its respective Control group. The amplitude of the electrical activity of the evaluated muscles was significantly greater in the initial stages of ISWT and remained until the end of the test, in both groups Asthma (ECOM [33%: p = 0.0005 and 66%: p = 0.004], ESC [ 33%: p = 0.001 and 66%: p = 0.033], and RF [33%: p = 0.02 and 66%: p = 0.004]) and COPD (ECOM [33%: p = 0.009, 66%: p = 0.023 and 100%: p = 0.023], ESC [33%: p = 0.006, 66%: p = 0.008 and 100%: p = 0.016] and RF [33%: p = 0.032 and 66%: p = 0.039] ), compared to the Paired Control groups. The median frequency (FM) and high/low ratio (H / L) decreased linearly in all muscles evaluated in the Asthma group, with the FM slope values being significantly different between asthma and control for ESC (p = 0.016) and RF (p <0.0001). In the COPD group, there was a linear decrease in FM for ECOM and RF. The slope values of the FM differed between the groups for ECOM (p <0.0001) and ESC (p = 0.002). The slopes of the H / L ratio were different, between groups, for ESC (p <0.0001) and RF (p = 0.002). Conclusion: According to the preliminary results, we can conclude that in individuals with asthma and COPD, there is a substantial increase in the electrical activity of the respiratory muscles during ISWT, and is accompanied by increased activation of peripheral muscles, however at the expense of poor performance. Furthermore, from the behavior of the power spectrum, we suggest that the respiratory and peripheral muscles are susceptible to muscle fatigue in these individuals, during the incremental protocol.

BANKING MEMBERS:
Externa à Instituição - JESSICA DANIELLE MEDEIROS DA FONSECA - F.M.Nassau
Externa ao Programa - 2211046 - LUCIEN PERONI GUALDI
Presidente - 5566309 - VANESSA REGIANE RESQUETI FREGONEZI