Publications by authors named "H Yata"
Article Synopsis
- The study aimed to investigate the role of natural killer (NK) cells and regulatory T (Treg) cells in the positive outcomes of high-dose intravenous immunoglobulin (IVIG) treatment for women experiencing recurrent pregnancy losses (RPL) of unclear causes.
- In a controlled trial involving 50 women receiving IVIG and 49 receiving a placebo, blood samples were analyzed at various points to measure the levels of NK and Treg cells.
- Results showed that IVIG treatment significantly increased Treg cell percentages and decreased NK cell activity shortly after infusion, suggesting that these changes could contribute to higher rates of live births among participants receiving IVIG.
Article Synopsis
- Researchers explored the effectiveness of high-dose intravenous immunoglobulin (IVIG) treatment for women experiencing unexplained recurrent pregnancy loss (RPL) in early pregnancy through a double-blind, placebo-controlled trial.
- The study involved 102 women, with 50 receiving IVIG and 49 receiving a placebo, assessing ongoing pregnancy rates at 22 weeks and live birth rates as primary outcomes.
- Results showed significantly higher ongoing pregnancy (62.0% vs. 34.7%) and live birth (58.0% vs. 34.7%) rates in the IVIG group, particularly in those treated at 4-5 weeks of gestation, compared to the placebo group.
The purpose of this study was to compare the mechanical properties of muscles and tendon structures for plantar flexor muscles at various strain rates and jump performances using single joint between middle-aged and young men in order to clarify the mechanisms of age-related decline in power output during vertical jump of middle-aged people previously reported. Passive muscle stiffness of the medial gastrocnemius muscle was determined based on passive muscle force and fascicle length during passive stretching at four angular velocities. Active muscle stiffness was calculated based on changes in muscle force and fascicle length during stretching at five angular velocities after submaximal isometric contractions.
View Article and Find Full Text PDFThe purpose of this study was to investigate the effects of plyometric training on the muscle-tendon mechanical properties and behavior of fascicles during jumping in order to elucidate the mechanisms of improved jump performance due to plyometric training. Eleven subjects completed a 12-week unilateral training program for plantar flexors. Active muscle stiffness with (100°·s ) and without (250°·s ) stretch reflex were calculated according to changes in muscle force and fascicle length during fast stretching after submaximal isometric contractions.
View Article and Find Full Text PDFThe aim of the present study was to compare the mechanical properties of muscles and tendons at high strain rates between sprinters and untrained men. Fifteen sprinters and 18 untrained men participated in this study. Active muscle stiffness of the medial gastrocnemius muscle was calculated according to changes in the estimated muscle force and fascicle length during fast stretching at five different angular velocities (100, 200, 300, 500, and 600 deg·s ) after submaximal isometric contractions.
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