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Orignal Paper : High circulating Levels of oxidized LDL in strength-trained athletes
( Seiji Maeda ),( Young Ju Choi ),( Mutsuko Yoshizawa ),( Kai Tanabe ),( Asako Miyaki ),( Yoko Tanabe ),( Hitoshi Shiraki ),( Ryuichi Ajisaka ),( Hidehiko Komine ) 한국운동영양학회 2011 Physical Activity and Nutrition (Phys Act Nutr) Vol.15 No.2
Oxidized low-density lipoprotein (oxLDL) has been shown to play a major role in the progression of atherosclerosis and cardiovascular disease. Aerobic exercise training has been reported to decrease plasma oxLDL levels. However, until now, there have been no studies regarding the effect of strength exercise training on plasma oxLDL levels. The purpose of this study was to investigate the plasma oxLDL. concentration and antioxidant capacity of plasma in strength-trained athletes. We specifically assessed the total scavenging activity against plasma hydroxyl radical (HO,) and alkoxyl radical (RO,) by using the electron spin resonance (ESR) technique, as both radicals are involved in oxLDL production. The subjects included young strength-trained athletes (SA group; shot put, hammer, javelin throwers, or power lifters; n=9) and sedentary individuals (control group; n=9). We measured plasma oxLDL concentrations and total scavenging activity against HO, and RO. Maximal muscle strength, as assessed by isokinetic tests of the knee and elbow joints and maximal handgrip strength, was significantly greater in the SA group than in the control group. Plasma oxl.DL concentrations were found to be significantly higher in the SA group than in the control group. The total scavenging activity of plasma against HO, and RO. did not differ between the two groups. These results suggest that high-intensity strength training increases plasma oxLDL concentration without upregulating the total scavenging activity against plasma HO, and RO.
Yutaka Maeda,Taku Hiramatsu,Seiji Miyoshi,Hiroomi Hikawa 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this work, we propose a learning scheme of pulse coupled oscillator using one-measurement simultaneous perturbation optimization method. Moreover, hardware implementation, especially, implementation by field programmable analog array is considered. Design result and actual operation results are described.
Tsuneaki Takao,Seiji Okada,Yuichiro Morishita,Takeshi Maeda,Kensuke Kubota,Ryosuke Ideta,Eiji Mori,Itaru Yugue,Osamu Kawano,Hiroaki Sakai,Takayoshi Ueta,Keiichiro Shiba 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.3
Study Design: Retrospective case series. Purpose: To clarify the influence of cervical spinal canal stenosis (CSCS) on neurological functional recovery after traumatic cervical spinal cord injury (CSCI) without major fracture or dislocation Overview of Literature: The biomechanical etiology of traumatic CSCI remains under discussion and its relationship with CSCS is one of the most controversial issues in the clinical management of traumatic CSCI. Methods: To obtain a relatively uniform background, patients non-surgically treated for an acute C3–4 level CSCI without major fracture or dislocation were selected. We analyzed 58 subjects with traumatic CSCI using T2-weighted mid-sagittal magnetic resonance imaging. The sagittal diameter of the cerebrospinal fluid (CSF) column, degree of canal stenosis, and neurologic outcomes in motor function, including improvement rate, were assessed. Results: There were no significant relationships between sagittal diameter of the CSF column at the C3–4 segment and their American Spinal Injury Association motor scores at both admission and discharge. Moreover, no significant relationships were observed between the sagittal diameter of the CSF column at the C3-4 segment and their neurological recovery during the following period. Conclusions: No relationships between pre-existing CSCS and neurological outcomes were evident after traumatic CSCI. These results suggest that decompression surgery might not be recommended for traumatic CSCI without major fracture or dislocation despite pre-existing CSCS.
최영주,나송규,Takahiko Nishijima,Seiji Maeda 한국운동영양학회 2023 Physical Activity and Nutrition (Phys Act Nutr) Vol.27 No.2
[Purpose] Curcumin, a major component of turmeric, has anti-inflammatory and antioxidative properties, which are associated with protective effects against muscle damage. This study examined the effects of dietary curcumin on inflammation and muscle damage in female competitive soccer players. [Methods] A single-blinded, placebo-controlled, nonrandomized, crossover pilot study was conducted. Six competitive female soccer players (20.0 ± 2.0 years-old) who participated in a 2-week preseason training program were assigned to two conditions: placebo and curcumin. The participants ingested a placebo or curcumin dosage (270 mg/day) during 2 weeks of preseason training, with 1 week of washout. Fasting blood samples were collected under resting conditions before (day 0) and after (day 15) the training period to examine changes in the concentration of interleukin 6 (IL-6), an inflammatory marker, and indices reflective of muscle damage. [Results] Curcumin decreased the concentration of IL-6 released (mean decrease, −30.2 ± 28.1%), whereas no decrease was observed in the placebo condition (13.4 ± 17.4%). Changes in plasma IL-6 concentrations were significantly greater in the curcumin condition than in the placebo condition (P < 0.05). However, curcumin supplementation had no significant effects on muscle damage indices. [Conclusion] The present study shows that curcumin supplementation could attenuate inflammation, as indicated by IL-6 concentrations, in competitive female soccer players during the training period.