Changes in Muscle Stiffness of Femoral Muscles during Menstrual Cycle in Healthy Young Women

Okazaki, Michie; Nasu, Chiduru; Yoshimura, Kazuyo; Sota, Takeshi; Tsuda, Takuro; Takahata, Tetsuo; Yagura, Chiaki

doi:10.1589/rika.23.509

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…In preparation for the study, the skin on the back of the thigh corresponding to 50% of the line segment connecting the head of the fibula from the ischial tuberosity of the subject was marked, and this region was used as the measurement of Ham stiffness. [ 9 , 10 ] The subjects underwent preliminary evaluation by measurement of Ham stiffness and sit-and-reach distance to evaluate Ham flexibility. The measurement was obtained taking into consideration the fluctuation and fatigue in daily life; it was performed at the same time, as far as possible, in the same individuals.…”

Section: Methodsmentioning

confidence: 99%

“…Interventions were performed with intervals of 1 or more days, and all experiments were performed in the same laboratory at room temperature of approximately 25°C in random order. [ 9 , 10 ]…”

Section: Methodsmentioning

confidence: 99%

“…In addition, the reliability of the method used to measure Ham stiffness has been confirmed in previous studies. [ 9 ]…”

Section: Methodsmentioning

confidence: 99%

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Efficacy of belt electrode skeletal muscle electrical stimulation on muscle flexibility of lower limbs

Tomida

Nakae

2020

Medicine

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Background: Muscular contracture may be caused by immobility-induced muscle atrophy and skeletal muscle hypoxia. Belt electrode skeletal muscle electrical stimulation (B-SES) is a new type of neuromuscular electrical stimulation that can simultaneously contract the lower limb muscle groups, in contrast to the conventional pad-type electrodes. B-SES can suppress muscular atrophy and relieve hypoxia of the skeletal muscle and is considered an appropriate strategy for preventing muscular contracture. However, the effect of B-SES on muscle flexibility has not been verified. This study aimed to compare the immediate effects of B-SES on skeletal muscle flexibility using different stimulation modes before the clinical study. Methods: We conducted a randomized controlled pilot trial with cross-over analysis of 10 healthy subjects. The participants were subjected to three stimulus conditions (Disuse B-SES, Metabolic B-SES, and Control) with a minimal interval of 1 day between interventions, and the lower limb flexibility before and after the B-SES intervention was evaluated. Lower extremity flexibility was evaluated based on the hamstring muscle stiffness and sit-and-reach distance. For each endpoint, within-group comparisons were performed before and after the intervention and were compared between the groups using paired t-tests. Changes in each endpoint before and after the intervention were analyzed using repeated-measures analysis of variance and the Bonferroni method. The significance level was 0.05. Results: Ten healthy individuals participated in all three interventions with a washout period between each intervention. In the Metabolic B-SES group, the sit-and-reach distance after the intervention was significantly higher than that before the intervention (P < 0.05). A comparison of the change in the sit-and-reach distance among the three groups before subsequent tests showed that the Metabolic B-SES group had a significantly increased sit-and-reach distance compared with the control group (P < 0.05). Conclusion: Metabolic B-SES was effective for the immediate improvement of flexibility of the lower limb muscles. Therefore, Metabolic B-SES may be useful as a strategy for preventing muscular contracture.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Efficacy of belt electrode skeletal muscle electrical stimulation on muscle flexibility of lower limbs

Tomida

Nakae

2020

Medicine

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Quantification of Muscle Stiffness and the Relationship between Muscle Stiffness and Pain in Muscle Knots

Kogo¹,

Kurosawa

Hasegawa³

et al. 2010

Rigakuryoho kagaku

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In the first part of the study (S1), we quantified muscle stiffness and gender differences in healthy persons. In the second part (S2), we clarified the relationship between muscle stiffness and pain in myofascial pain syndrome (MPS) which has muscle knots. [Subjects] The subjects of S1 were 52 healthy adults in their twenties. The subjects of S2 were 44 patients complaining of chronic lumbago, who showed no imaging or neurological findings and had muscle knots in the longissimus thoracis. [Methods] In S1, we measured the stiffness of the longissimus thoracis, and the trapezius and major rhomboid muscles with a muscle hardness meter; gender differences were verified with the t test. In S2, muscle stiffness was measured with the muscle hardness meter, and pain was evaluated using a numerical rating scale. The relationship between muscle stiffness and pain was investigated using Pearson's correlation coefficient. [Results] In S1, for the trapezius muscle, females showed significantly higher values, but no significant differences were seen for the other two muscles. In S2, the correlation between muscle stiffness and pain in muscle knots was weak. [Conclusion] We revealed that females have comparatively higher muscle stiffness in the trapezius muscle than males; however, the level of pain had no influence on muscle stiffness in MPS which has muscle knots.

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Changes in Muscle Stiffness of Femoral Muscles during Menstrual Cycle in Healthy Young Women

Cited by 2 publications

References 22 publications

Efficacy of belt electrode skeletal muscle electrical stimulation on muscle flexibility of lower limbs

Efficacy of belt electrode skeletal muscle electrical stimulation on muscle flexibility of lower limbs

Quantification of Muscle Stiffness and the Relationship between Muscle Stiffness and Pain in Muscle Knots

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