Electrical stimulation and isokinetic training: effects on strength and neuromuscular properties of healthy young adults

Diferenças de gênero no limiar sensitivo para estimulação elétrica nervosa em adultos jovens

“…2,11 Lund et al 10 investigated differences in the electric sensory threshold and pain threshold before, during and after the use of TENS, and observed an increase of ST in men and women after the use of TENS (high frequency), although there was a greater variation in the women's group. In the studies of Avila et al 15 , using another kind of neuromuscular electrical stimulation, the tolerated electrical current amplitude, that is, TT, was also higher for men than for women. The authors suggest gender differences in the composition of the type of nerve fibers; or direct neuroactive actions of the SHs on the nerve impulse trigger and transmission speed.…”

“…[1][2][3][4] The discovery that the circulating levels of sex hormones (SH), especially estrogen E2 and progesterone P2, besides the reproductive 8 and cardioprotective 9 roles, can exercise modulatory effects on the neuronal functions and alter the superficial cutaneous sensitivity 1,2 , gave rise to intriguing questions about the parameters of conformation/therapeutic modulation in analgesia in both genders, particularly in associations with thermal resources. [5][6][7][8][9][10][11] Considering that transcutaneous electrical nerve stimulation (TENS) appears as one of the most reliable and effective non-pharmacological resources for analgesia [3][4][5][6][7][10][11][12][13][14][15] , it became worth investigating the variations of the NSS between genders, and whether previous changes in skin temperature induced by heating/cooling would interfere in the adjustment/peripheral control of the NSS. Recently, experimental and clinical investigations showed that there are differences in the perception of the nociceptive stimulus, in the pain tolerance threshold and in cutaneous sensitivity to electrical stimuli between genders.…”

Uso da corrente russa na reabilitação neurológica de paciente com traumatismo crânio encefálico: relato de caso

“…Por fim, a largura de pulso foi estabelecida pelo tamanho das fibras e os tempos de contração e repouso foram determinados visando ao recrutamento muscular significativo sem fadiga muscular. Esses parâmetros seguiram dados encontrados na literatura, respeitando o tipo de fibra muscular (mista), a intensidade tolerada pelo paciente, e o tempo de terapia para evitar a fadiga 6,7 .…”

“…O protocolo de intervenção fisioterapêutica aplicado neste estudo foi desenvolvido visando a otimizar a recuperação do paciente, e é apresentado a seguir: • 10 minutos de alongamentos passivos com duas séries de 30 segundos cada, sendo 5 minutos para os músculos flexores e extensores do punho e cotovelo do MSE e 5 minutos para flexores e extensores do tornozelo e joelho do MIE; • 15 minutos de aplicação de CR (frequência: 20 Hz; largura de pulso: 300 µs; subida: 2s; on: 8s; descida: 2s; off: 24s; modo sincronizado) 6,7 . Os eletrodos do MSE foram aplicados no ventre muscular do bíceps braquial e nos flexores do punho em uma sessão semanal, e nos tríceps braquial e extensores do punho na outra.…”

Análise da relação entre parâmetros da onda M e a dor

“…Pain may be evaluated with tools such as electromyography (EMG), evoked potentials analysis and electrical stimulation 7 . Electrical stimulation is widely used in physical therapies 8 . A study carried out to assess the level of sensory discomfort caused by low and medium frequency currents in electrical stimulation of femoral quadriceps muscles in healthy women makes clear the presence of pain during electrical stimulation sessions 9 .…”