Medicine and Health Sciences Commons^™

Changes In Insulin Sensitivity And Lipid Profile Markers Following Initial And Secondary Bouts Of Multiple Eccentric Exercises, Trevor C. Chen, Min Jyue Huang, Leonardo C. R. Lima, Tai Ying Chou, Hung Hao Wang, Jui Hung Tu, Shi Che Lin, Kazunori Nosaka

Research outputs 2022 to 2026

An acute bout of eccentric exercise affects insulin sensitivity and lipid profile, but how the magnitude of muscle damage affects them is not clear. We compared changes in blood insulin sensitivity and lipid markers after the first (EC1) and second (EC2) eccentric exercise bouts. Fifteen sedentary young men performed arm, leg and trunk muscle eccentric exercises, and repeated them 2 weeks later. Fasting blood samples were taken before, 2 h and 1–5 days after each exercise bout to analyze plasma creatine kinase (CK) activity, serum glucose (GLU), insulin, homeostasis model assessment (HOMA), triacylglycerols (TG), total (TC) and low- (LDLC) and …

Muscle Length Influence On Rectus Femoris Damage And Protective Effect In Knee Extensor Eccentric Exercise, Ryoichi Ema, Kazunori Nosaka, Ryosuke Kawashima, Akihiro Kanda, Koya Ikeda, Ryota Akagi

Research outputs 2014 to 2021

© 2020 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd This study tested the hypothesis that the magnitude of rectus femoris (RF) damage and the repeated bout effect (RBE) would be greater after knee extensor eccentric exercise performed in a supine (long RF lengths) than a sitting (short RF lengths) position, and the muscle length effects would be more prominent at the proximal than distal RF. Young untrained men were placed to one of the two groups (n = 14 per group). S group performed the knee extensor eccentric exercise in …

Changes In The Number Of Circulating Cd34+ Cells After Eccentric Exercise Of The Elbow Flexors In Relation To Muscle Damage, Ho Seong Lee, Makii Muthalib, Takayuki Akimoto, Kazunori Nosaka

Research outputs 2014 to 2021

Background: It has been reported that strenuous exercise increases the number of bone marrow-derived progenitor cells such as CD34⁺ cells in the blood, but no previous studies have investigated the changes in circulating CD34⁺ cells following resistance exercise. This study tested the hypothesis that the number of CD34⁺ cells in the blood would increase after eccentric exercise of the elbow flexors, but decrease in recovery, and the magnitude of the changes would be dependent on the magnitude of muscle damage.

Methods: Nine men (28.0 ± 6.6 years) performed exercises consisting of 10 sets of six maximal voluntary …

An Investigation Of The Effect Of Exercised Arm, Training Status, And Racial Background On Changes In Markers Of Muscle Damage Following Maximal Eccentric Exercise Of The Elbow Flexors, Michael J. Newton

Theses: Doctorates and Masters

Despite the substantial body of research accumulated on exercise-induced muscle damage, there remain several areas that warrant further investigation. Study groups comprised of individuals from differing racial background and /or training status have the potential to influence the intra-group variability in damage markers following eccentric exercise. In addition, if a contralateral arm model is employed, intra- and inter-group variation could be influenced by the formation of groups based on limb dominance and /or the order in which the arms are exercised. Currently there is a dearth of research addressing these factors, however, these types of studies are important as they …