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Effects of prolonged vibration to vastus intermedius muscle on force steadiness of knee extensor muscles during isometric force-matching task 査読有り

Saito, A., Ando, R., Akima, H.

J. Electromyogr. Kinesiol. 2016年12月

Associations of intramyocellular lipid in vastus lateralis and biceps femoris with blood free fatty acid and muscle strength differ between young and elderly adults. 査読有り Open Access

Hioki M, Kanehira N, Koike T, Saito A, Takahashi H, Shimaoka K, Sakakibara H, Oshida Y, Akima H.

Clin Physiol Funct Imaging 36 巻 ( 6 ) 頁： 457-463 2016年11月

Neuromuscular Activation of the Vastus Intermedius Muscle during Isometric Hip Flexion. 査読有り Open Access

Saito A, Akima H.

PLoS One 10 巻 ( 10 ) 頁： e0141146 2016年10月

Age-related changes in motor unit firing pattern of vastus lateralis muscle during low-moderate contraction. 査読有り Open Access

Watanabe K, Holobar A, Kouzaki M, Ogawa M, Akima H, Moritani T

Age (Dordr) 38 巻 ( 3 ) 頁： 48 2016年6月

Intramuscular adipose tissue determined by T1-weighted MRI at 3T primarily reflects extramyocellular lipids. 査読有り

Akima H, Hioki M, Yoshiko A, Koike T, Sakakibara H, Takahashi H, Oshida Y.

Magn Reson Imaging 34 巻 ( 4 ) 頁： 397-403 2016年5月

Effects of prolonged patellar tendon vibration on force steadiness in quadriceps femoris during force-matching task 査読有り

Saito, A., Ando, R., Akima, H.

Exp. Brain Res. 234 巻 ( 1 ) 頁： 209-217 2016年1月

Effect of interelectrode distance on surface electromyographic signals of vastus intermedius muscle in women and men 査読有り

Tomita, A., Ando, R., Saito, A., Watanabe, K.,Akima, H.

J. Electromyogr. Kinesiol. 25 巻頁： 841-846 2015年12月

Non-uniform recruitment along humans rectus femmoris muscle during transcutaneous electrical nerve stimulation. 査読有り

Watanabe, K., Kouzaki, M., Ando, R., Akima, H., Moritani, T.

Eur. J. Appl. Phsyiol. 115 巻頁： 2159-2165 2015年6月

Skeletal muscle size is a major predictor of intramuscular fat content regardless of age 査読有り

Akima, H., Yoshiko, A., Hioki, M., Kanehira, N., Shimaoka, K., Koike, T., Sakakibara, H., Oshida, Y.

Eur. J. Appl. Physiol. 頁： 000-000 2015年

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

Purpose
Skeletal muscles of older individuals have a larger amount of intramuscular adipose tissue (IntraMAT) than those of younger individuals. It is not understood how aging affects the IntraMAT content of individual muscles of the thigh. We assessed the relationship between IntraMAT content and skeletal muscle cross-sectional area (CSA), subcutaneous adipose tissue CSA, biochemical blood profiles, and physical activity.
Methods
Fifteen older (70.7 ± 3.8 years) and 15 younger (20.9 ± 0.3 years) men and women participated in this study. Magnetic resonance imaging of the right thigh was taken to measure IntraMAT content and skeletal muscle CSA for the quadriceps femoris (QF), hamstrings (HM), adductor (AD) muscle groups and subcutaneous adipose tissue CSA of the thigh. Fasting blood samples were collected to measure plasma lipids, adiponectin, and HbA1c levels.
Results
IntraMAT content in QF, HM, and AD for the Older group was significantly higher than in the Younger group. However, skeletal muscle CSA normalized by body weight (skeletal muscle CSA/bw) in the QF (P < 0.001) and total thigh (P < 0.01) were significantly lower in the Older group compared with the Younger group.There were no significant differences in HM and AD. Stepwise regression analysis with IntraMAT content as a dependent variable revealed that skeletal muscle CSA/bw of the thigh was the only predictive variable for IntraMAT content in Older and Younger groups.
Conclusion
These results suggest that skeletal muscle size could be a major determinant of IntraMAT content regardless of age.

DOI： 10.1007/s00421-015-3148-2

Effects of prolonged patellar tendon vibration on force steadiness in quadriceps femoris during force-matching task. 査読有り

Saito, A., Ando, R., Akima, H.

Exp. Brain Res. 頁： 00-00 2015年

Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions 査読有り

Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions.

Muscle & Nerve 999 巻 ( 999 ) 頁： 999-999 2015年

Coordination among thigh muscles including the vastus intermedius and adductor magnus at different cycling intensities. 査読有り

Saito, A., Akima, H.

Human Mov. Sci. 頁： 000-000 2014年12月

Validity of fascicle length estimation in the vastus lateralis and vastus intermedius using ultrasonography 査読有り

Ando, R., Taniguchi, K., Saito, A., Fujimiya, M., Katayose, M., Akima, H.

J. Electromyogr. Kinesiol. 24 巻頁： 214-220 2014年7月

Estimation of muscle atrophy based on muscle thickness in knee surgery patients 査読有り

Hioki, M., Furukawa, T., Akima, H.

Clin. Physiol. Funct. Imaging 34 巻頁： 183-190 2014年7月

Local architecture of the vastus intermedius is a better predictor of knee extension force than that of the other quadriceps femoris muscle heads. 査読有り

Ando, R., Saito, A., Umemura, Y., Akima, H.

Clin. Physiol. Func. Imaging 9999 巻頁： 9999 2014年6月

Coordination among thigh muscles including the vastus intermedius and adductor magnus at different cycling intensities. 査読有り

Saito, A., Watanabe, K., Akima, H.

Human Mov. Sci. 頁： 000-000 2014年

Activation of quadriceps femoris including vastus intermedius during fatiguing dynamic knee extensions 査読有り

Akima, H., Saito, A.

Eur. J. Appl. Physiol. 113 巻頁： 2829-2840 2013年9月

Estimation of muscle atrophy based on muscle thickness in knee surgery patients 査読有り

Hioki, M., Fufukawa, T., Akima, H.

Clin. Physiol. Funct. Imaging 2013年9月

Knee joint angle affects EMG-force relationship in the vastus intermedius muscle 査読有り

Saito, A., Akima, H.

J. Electromyogr. Kinesiol. 23 巻頁： 1406-1412 2013年9月

The highest antagonistic coactivation of the vastus intermedius muscle among quadriceps femoris muscles during isometric knee flexion. 査読有り

Saito, A., Akima, H.

J. Electromyogr. Kinesiol. 頁： 000 2013年5月

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