Ativação e co-contração dos músculos gastrocnêmio e tibial anterior na marcha de mulheres utilizando diferentes alturas de saltos

Candotti, Cláudia Tarragô; Torre, Marcelo La; Varela, Marcelo

doi:10.1590/s0101-32892012000100003

Cited by 5 publications

(6 citation statements)

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“…Portanto, talvez seja difícil avaliar qualquer adaptação aguda que possa ocorrer em função da utilização do salto, como a proposta no presente estudo. Além disso, cabe considerar que cada uma das estudantes também possui vivências diferentes em relação ao uso do calçado de salto alto, que podem interferir nos resultados encontrados, mostrando, então, uma terceira limitação do presente estudo, o qual não controlou a variável 'vivência', ou seja, a frequência semanal superior a duas vezes por semana, o número de 5,7 . Entretanto, os estudos nem sempre concordam no tipo de alteração provocada pelo mesmo.…”

Section: Discussionunclassified

“…Intrínseco a tais pesquisas, a natureza da altura do sapato de salto alto também tem sido alvo de interesse dos pesquisadores, os quais, em geral, têm demonstrado que quanto maior a altura do salto, maiores as consequências negativas sobre o aparelho locomotor 7 , sejam relacionadas ao aumento da força de reação ao solo no antepé 2 ou ao deslocamento anterior do centro de massa. Este supostamente poderia acarretar no aumento da pressão na região lombar 1 .…”

Section: Introductionunclassified

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Avaliação da coluna lombar e torácica nas situações com salto alto e com os pés descalços com o instrumento arcômetro

et al. 2012

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RESUMO | O salto alto há muitos anos tem sido um grande aliado das mulheres, tornando-se uma ferramenta fundamental em seu dia a dia. Contudo, a utilização indiscriminada, seja do ponto de vista da frequência de utilização ou da altura do salto, pode trazer prejuízos para a saúde do corpo, que, a busca do melhor equilíbrio, pode desencadear alterações da postura, trazendo problemas para os pés e para a coluna vertebral. Os objetivos deste estudo foram: identificar a postura das curvaturas das colunas vertebral, torácica e lombar de estudantes universitárias, a partir do conhecimento dos ângulos destas curvaturas, e comparar esta postura nas situações com salto alto e com os pés descalços. Foram avaliadas 34 estudantes do sexo feminino, com idades médias de 20±1,9 anos, utilizando o instrumento arcômetro, nas situações com salto alto de 9 cm de altura e com pés descalços. O arcômetro foi colocado sobre os processos espinhosos das vértebras T1, T12, L1 e L5, identificados por palpação, e forneceu os ângulos das curvaturas. Para verificar as diferenças dos ângulos e da postura entre as duas situações de teste, foram utilizados o teste t pareado e o do χ 2 , respectivamente (a=0, 05). Os resultados demonstraram que a utilização de salto alto não modificou significativamente os ângulos das curvaturas torácica e lombar da coluna vertebral, bem como não interferiu na classificação da postura das estudantes universitárias, as quais, em sua maioria, apresentaram postura normal da coluna vertebral.Descritores | postura; coluna vertebral; avaliação.ABSTRACT | For many years, high heels have been a great ally of women becoming an important tool in their everyday lives. However, its use, especially indiscriminate in the point of view of the use frequency or heel height, can bring harm to the body, which, in the search for better balance, may favor body posture changes by bringing injuries to the feet and to the spine. The aims of this study were: to identify the curvatures position of the vertebral, thoracic, and lumbar spines of university students from the knowledge of curvature angles and to compare this approach in situations with high heels and barefoot. Thirty-four female students were evaluated, and their mean age was 20±1.9 years-old, using the arcometer instrument, in situations with high heels, 9 inches tall and barefoot. The arcometer was placed on the spinous processes of T1, T12, L1 and L5 vertebrae, identified by palpation, and it provided the angles of each of the bends. For verification of differences of the angles and body posture between both test situations, the t and χ2 tests, were, respectively, used (a=0.05). The results showed that using high heels did not significantly alter the angles of curvature of the thoracic and lumbar spines and did not affect the classification of the body posture of physical therapy students, who mostly presented normal posture of the spine.

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Section: Discussionunclassified

Section: Introductionunclassified

Avaliação da coluna lombar e torácica nas situações com salto alto e com os pés descalços com o instrumento arcômetro

et al. 2012

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“…The walking was evaluated during the ten first cycles in two conditions. The tests were randomly performed to avoid the execution order interfered with the results [7], break of two minutes between the conditions and familiarization with the preferred speed for five minutes [7]. We guided the volunteers not to use the support base of the treadmill handles and to remain barefoot during the collection [15].…”

Section: Methodsmentioning

confidence: 99%

“…To determine the preferred speed used at the treadmill, a speed evaluation on the floor was initially used , where the participants walked on a 20-meter track, and the time used to walk the central 10 meters was measured, deducing the initial and final 5 meters [7]. The test was performed three times, and the average value was defined as the floor walking preferred speed [7].…”

Section: Methodsmentioning

confidence: 99%

“…During dynamic movements, stability is challenged all the time, and the muscle cocontraction is one of the mechanisms that the central nervous system (CNS) has to stabilize a certain segment [6][7][8][9]. Walking is a dynamic task with high frequency during the day, and as far as it is known, in the presence of chronic lumbar pain (CLP) the individuals present lower amplitude of the articular movement, rigidity, shorter step length, higher step width [10,11] and shorter walking speed.…”

Section: Introductionmentioning

confidence: 99%

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Muscle recruitment and co-contraction when walking in young women with chronic lumbar pain

et al. 2020

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Introduction: The lumbar pain is the main musculoskeletal complaint reported by the active population, and it prevents daily activities such as walking. Objective: To assess muscle recruitment and the co-contraction of the trunk muscles during different walking speed in individuals with and without chronic lumbar pain. Method: Thirty-four sedentary young women attended the study, in which 18 belonged to the lumbar pain team (LPT) and 16 to the team without lumbar pain (WLP). We assessed the electromyography activity of the internal oblique (IO) local muscle and lumbar multifidus (MUL), and global external oblique (EO), abdominal rectus (AR) and lumbar iliocostalis (LIC), during walking. The electromyography analysis was performed from the average of the linear envelope value, normalized by the peak of muscle activation. The muscle co-contraction (IO/MUL, EO/LIC, AR/LIC, IO/EO, and the abdominal/paravertebral muscle groups) was calculated with the Falconer and Winter formula. The Shapiro-Wilk test, Multivariate Analysis, mixed Variance Analyses with Bonferroni post-hoc, and Pearson (p < 0.05) correlation coefficient were made by the statistical analysis. Results: In the WLP we could notice that the higher the speed, the higher the MUL activation. The co-contraction data demonstrated that IO/MUL muscles activate 20% more in the LPT, during the preferred speed; however, in the WLP, the results showed that the higher the walking speed, the higher the EO/LIC (21.8%) and IO/MUL (17.8%) muscles activation. Conclusion: The recruitment of local muscles doesn’t differ among the evaluated groups and conditions; however, in WLP, the higher the MUL muscle action, the higher the walking speed.

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Effects of Shoe Heel Height on Walking Velocity and Electromyographic Activities of Lower Extremity Muscles During Short- and Long-Distance Walking in Young Females

2019

Physical Therapy Korea

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Ativação e co-contração dos músculos gastrocnêmio e tibial anterior na marcha de mulheres utilizando diferentes alturas de saltos

Cited by 5 publications

References 11 publications

Avaliação da coluna lombar e torácica nas situações com salto alto e com os pés descalços com o instrumento arcômetro

Avaliação da coluna lombar e torácica nas situações com salto alto e com os pés descalços com o instrumento arcômetro

Muscle recruitment and co-contraction when walking in young women with chronic lumbar pain

Effects of Shoe Heel Height on Walking Velocity and Electromyographic Activities of Lower Extremity Muscles During Short- and Long-Distance Walking in Young Females

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