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Previous issue date: 2014-10-21 / O objetivo deste estudo foi
estabelecer um padr
?
o de
normaliza??o
da
eletromiografia de superf?cie para os m?sculos
respirat?rios
esternocleidom
astoideo
(ECOM), escaleno (ESC)
e reto abdominal (
RA
)
.
M?todos
:
Foram avaliados sujeitos
saud?veis em rela??o a dados antropom?tricos, espirometria e
s
EMG
durante
a execu??o
de
cinco manobras distintas
:
sniff
teste, press?o inspirat?ria m?xima (PIm?x), press?o
expirat?ria m?xima (PEm?x) e
c
ontra?
?
o Volunt?ria M
?
xima Isom?trica (CVMI)
dos
m?sculos
RA
, ECOM e ESC. Para coloca??o dos eletrodos, a pele foi preparada com
abras?o, seg
uida de tricotomia, nas seguintes regi?es para aquisi??o dos sinais de
eletromiografia: (1) ECOM: ter?o inferior da dist?ncia entre o processo mastoide e a
articula??o esternoclavicular; (2) ESC: 5 cm para a direita a partir da articula??o
esternoclavicula
r
e, neste ponto, 2 cm para cima e (3
)
RA
: ao n?vel da cicatriz umbilical, 4
cent?metros ? direita
. Na an?lise das vari?veis eletromiogr?ficas, a normalidade dos
dados foi avaliada pelo teste
Shapiro
-
Wilk
. Compara??es entre as
manobras
inspirat?rias
estudadas foram realizadas por meio do teste de
Friedman
e para manobras expirat?rias,
teste de Mann Whitney
. Ao dividir a amostra entre homens e mulheres, foi aplicado o
teste de Mann
-
Whitney
e Teste
t
de
student
de acordo com a normalidade dos dados
.
Re
sultados
:
35
sujeitos aceitaram participar do estudo, mas 5 foram exclu?dos
(
IMC>25
kg/m?
)
. A amostra foi composta por
30
sujeitos (1
5
mulheres),
idade m?dia
25,7 ? 6,42
anos
,
IMC
22,2
?
1,73
kg/m? e ?ndices espirom?tricos dentro dos limites considerados
normais.
A
CVMI
para os m?sculos ECOM, ESC e RA foi a que apresentou maior valor de
RMS
.
Conclus?o:
A manobra de CVMI
para
ECOM, ESC e RA foi a que apresentou
maiores valores de
RMS
. Quando comparamos a
RMS
das manobras estudadas entre os
grupos, n?o houve diferen?a significativa entre eles. / Aim
: To evaluate and to standardize surface
electromyography (sEMG) normalization
procedures for respiratory muscles by comparing muscle activation during
Maximal
Voluntary Isometric Contraction (MVIC) and Maximal Respiratory Pressures (MIP, MEP
and sniff test).
Methods:
Healthy subjects were evalua
ted regarding demographics,
spirometry and sEMG during the five maneuvers: sniff test,
MIP
,
MEP and Maximal
Voluntary Isometric C
ontraction (MVIC) of RA,
SCM
and SC
A
. For electrode placement,
skin was prepared with abrasion, followed by shaving in the foll
owing regions for
acquisition of el
ectromyographic signals: (1) SC
M: lower third of the distance between the
mastoid process and t
he sternoclavicular joint; (2)
SC
A
: 5 cm to the right from the
sternoclavicular joint and
at this point, up to 2 cm; and (3
)
RA: the level of umbilicus, 4 cm
to the right. In electromyographic variables
analysis
, the
data normality
was assessed
by
Shapiro
-
Wilk test.
Comparisons among studied maneuvers were performed by Friedman
Test and Dunn?s post
-
hoc for multiple comparisons a
mong inspiratory maneuvers, and
Mann Whitney test for expiratory maneuvers. Subgroups differences between genders
were performed by Student's t test or Mann
-
Whitney test according to data normality.
Results:
35
subjects participated in the study, b
ut 5 we
re excluded (BMI> 25 kg/
m?).
Sample consisted of
30
subjects (1
5
women),
mean age 27.3?7.43 years, BMI 22.2
?
1.69
kg/m? and spirometric indices within normal limits.
Specific MVIC for SCM, SCA and RA
showed the highest RMS. When we grouped sample into
gender we found no difference
among RMS values for the studied SCM maneuvers, while for SCA, MVIC
SCM
/
SCA
was the
one with the highest RMS and for RA, MVIC
RA
in men. Once considering women,
MVIC
SCM/SCA
showed the highest RMS for SCM, SCA and MVIC
RA
showed t
he highest
value for RA.
Conclusion:
MVIC for SCM, SCA and RA muscles showed the highest RMS
values. When comparing RMS between the studied groups, there was no significant
difference between men and women.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/20248 |
| Date | 21 October 2014 |
| Creators | Azevedo, Ingrid Guerra |
| Contributors | 02357307935, http://lattes.cnpq.br/2201375154363914, Andrade, Armele de F?tima Dornelas de, 27578208420, http://lattes.cnpq.br/2911134983219799, Gualdi, Lucien Peroni, 00872550060, http://lattes.cnpq.br/3486514016305167, Fregonezi, Guilherme Augusto de Freitas |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM FISIOTERAPIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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