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Domingo, 15 Junho 2025
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Especialista explica que excesso de espasmos pode atrapalhar o período de descanso
05/04/2025 às 12:50
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Nome científico dos espasmos é Mioclonia de transição vigília-sono | Imagem: Dieter Robbins/Pixabay
Sabe quando a gente está prestes a dormir e sofre pequenos espasmos, como se tomássemos um susto na cama? A maior parte da população sente esses espasmos, mas o que será que eles significam?
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Geraldo Lorenzi Filho é pós-doutor especialista em medicina do sono pela Universidade de São Paulo e coordenador do Núcleo Interdisciplinar das Ciências do Sono, e explica melhor sobre esses pequenos acidentes na hora de dormir.
Conforme explica Lorenzi Filho, os espasmos são completamente normais, e acontecem com todo mundo. Às vezes fracos e às vezes mais fortes, eles são chamados cientificamente de mioclonias de transição vigília-sono.
"Os espasmos não apresentam significado clínico, ou seja, na grande maioria das vezes não são motivos de preocupação"
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Ainda não há consenso científico de porque acontecem. Um estudo da Universidade do Colorado, Estados Unidos, aponta que a resposta pode ser um vestígio evolutivo de quando o ser humano era primata simples e dormia nas árvores.
Os espasmos serviam, segundo a teoria, para não deixar os macacos relaxar demais e caírem dos galhos.Outra teoria diz que está relacionada com o movimento periódico que as pernas humanas devem fazer.
Embora normais, os espasmos podem ser um problema se ocorrerem com muita frequência e atrapalharem o sono. Algumas condições recorrentes relacionadas a espasmos frequentes, tanto em vigília (acordado) ou durante o sono são:
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Estresses físico e/ou emocional, o consumo abusivo de álcool, a falta de vitaminas B1, B5 e B6 (encontradas em proteínas de origem animal); desidratação; fratura óssea; estiramento ou sobrecarga muscular; consumo de medicamentos fortes.
Paradoxalmente, a falta de descanso ou noites de sono sem qualidade também podem causar espasmos musculares. Por isso, Lorenzi Filho indica: Caso você apresente sonolência durante o dia, noites de sono interrompidas por despertares frequentes, insônia ou cansaço ao acordar, procure um médico do sono.
Os espasmos frequentes e incômodos podem não ser causa, mas consequência de uma outra condição clínica.
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