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Estudo da força isométrica máxima e limiar da dor em trabalhadores com computador com mialgia crónica do trapézio, mialgia crónica do pescoço-ombro e saudáveis
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A Mialgia Crónica do Trapézio (MCT) é uma condição clínica pertencente ao universo
da Mialgia crónica do pescoço e ombro (MCPO). Os sujeitos com MCT tendem a
possuir valores de força inferior em movimentos da omoplata e do ombro. Este estudo
teve como objetivo a descrição e comparação dos níveis de força isométrica máxima
(FIM) para trapézio superior (TS) e inferior (TI), limiar de dor por pressão (PPT) e rácio
de força trapézio superior/inferior entre trabalhadores de computador saudáveis (n=26),
trabalhadores com MCT (n=18) e com MCPO (n=20). Adicionalmente, procedeu-se ao
estudo da correlação entre intensidade de dor, limiar da dor e força. Os resultados
apontaram para uma maior sensibilidade à dor em sujeitos com MCT e menores níveis
de FIM para o TS comparativamente com o grupo saudável. Para as restantes variáveis,
não houveram diferenças significativas entre MCT e a população saudável. Entre os
grupos clínicos (MCT e MCPO), os sujeitos com MCT tendem a ter valores inferiores
de PPT, sendo apenas significativamente mais baixos no lado contralateral ao lado mais
doloroso. Existe uma correlação positiva e significativa entre PPT e força para o TS,
transversal a todos os grupos. A grande conclusão do estudo reside no facto de se ter
confirmado que a MCT é uma condição que altera consideravelmente a força isométrica
do TS e que estes se correlacionaram negativamente com o limiar da dor por pressão.
Chronic trapezius myalgia (CTM) is a clinical condition, belonging to the universe of Chronic neck/shoulder pain (CNSP). In the presence of muscular pain, people with CTM tend to present smaller strength values in motions that occur in the shoulder and scapula. This study aimed to describe and compare levels of maximal isometric strength (MIS) for the upper trapezius (UT) and lower trapezius (LT), pain pressure threshold (PPT) and upper trapezius/lower trapezius strength ratio in healthy computer workers (n=26), with CTM (n=18) and with CNSP (n=20). Additionally, correlations were study between PPT, pain intensity and strength for UT and LT. The results pointed to a higher pain sensitivity and lower strength in UT in individuals with CTM, comparing to healthy workers. To the other variables, there was no significant differences between subjects with clinical conditions and healthy population. Between clinical conditions (CTM and CNSP), subjects with CTM tended to present lower PPT’s comparing to subjects with CNSP, but only significant in the contralateral side. There was a low positively significant correlation between PPT and UT strength, in all groups. The main conclusion of this study was the confirmation that CTM subjects have lower UT strength than a matched healthy population and that this correlates with pain sensitivity.
Chronic trapezius myalgia (CTM) is a clinical condition, belonging to the universe of Chronic neck/shoulder pain (CNSP). In the presence of muscular pain, people with CTM tend to present smaller strength values in motions that occur in the shoulder and scapula. This study aimed to describe and compare levels of maximal isometric strength (MIS) for the upper trapezius (UT) and lower trapezius (LT), pain pressure threshold (PPT) and upper trapezius/lower trapezius strength ratio in healthy computer workers (n=26), with CTM (n=18) and with CNSP (n=20). Additionally, correlations were study between PPT, pain intensity and strength for UT and LT. The results pointed to a higher pain sensitivity and lower strength in UT in individuals with CTM, comparing to healthy workers. To the other variables, there was no significant differences between subjects with clinical conditions and healthy population. Between clinical conditions (CTM and CNSP), subjects with CTM tended to present lower PPT’s comparing to subjects with CNSP, but only significant in the contralateral side. There was a low positively significant correlation between PPT and UT strength, in all groups. The main conclusion of this study was the confirmation that CTM subjects have lower UT strength than a matched healthy population and that this correlates with pain sensitivity.
Descrição
Palavras-chave
Correlação Dor crónica não específica do pescoço Força muscular Limiar de dor Mialgia crónica do pescoço/ombro Mialgia crónica do trapézio Rácio de força Sensibilidade à dor Trabalhadores com computador Chronic pain Chronic trapezius myalgia Computer workers Correlation Muscular strength Neck/shoulder chronic pain Non-specific neck Pain pressure threshold Pain sensitivity Strength ratio