Changes in the Production of Reactive Oxygen Species from Neutrophils Following a 100-km Marathon.

Sato, Hideki; Abé, Tatsuya; Kikuchi, Takashi; Endo, Tetsu; Hasegawa, Hiroko; Nakaji, Sigeyuki; Sugawara, Kazuo; Ohta, Seikou

doi:10.1265/jjh.51.612

Cited by 23 publications

(32 citation statements)

References 10 publications

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“…‡W Discussion This study provides an important first step on exploring the motivations and psychological characteristics of the growing population of ultramarathon runners in Japan. The mean age of the runners in this study was 45.7 years; a result that is consistent with those of other studies (Fournier et al, 1997;Sato et al, 1996;Takada et al, 1994).…”

Section: Discussionsupporting

confidence: 93%

Motivations and psychological characteristics of Japanese ultra-marathon runners using Myers-Briggs type indicator

Hashimoto

Hagura

Kuriyama

et al. 2006

Jpn. J. Health Hum. Ecol

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To investigate the motivations and psychological profiles of ultra-marathon runners using Myers-Briggs Type Indicator (MBTI), 52 Japanese subjects (mean age, 45 .7 years; male, 76.9%) participated in the present study. It was found that 38.5% and 23.1% of the subjects begun ultramarathons because they wanted to run a longer distance than in usual marathons , and because of the influence of others, respectively. The motivations of each subject were categorized into achievement, social, and psychological reasons. Of the 52 subjects, 73.1%, 46.2%, 32 .7%, and 26.9% reported that ultra-marathon running provides a sense of achievement (psychological reason) , a challenge (achievement reason), the opportunity to extend current capabilities (achievement rea son), and the opportunity to socialize with other runners and meet people (social reasons) , respec tively. According to the MBTI results, INFJ and ISFJ are the two dominant personality types in ultra-marathon runners. Running experience did not differ between INFJ/ISFJ and non-IFJ sub jects, indicating that the characteristics of INFJ/ISFJ subjects are not the results of the involve ment in ultra-marathons. In conclusion, this study suggests that Japanese ultra-marathon runners tend to be more introverted, make decisions based on their feelings, and control environment in an orderly manner than the Japanese normative population.

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Section: Discussionsupporting

confidence: 93%

Motivations and psychological characteristics of Japanese ultra-marathon runners using Myers-Briggs type indicator

Hashimoto

Hagura

Kuriyama

et al. 2006

Jpn. J. Health Hum. Ecol

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“…Many studies have examined the relationship between neutrophil ROS production capability and exercise or short-and long-term training (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27). However, only our studies have researched the changes in SOA following exercise or training (13,(28)(29)(30) and the results of these are summarized in Table 1. In general, this data has shown that exercise increases SOA.…”

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confidence: 99%

Effects of 2.5‐hour sumo training on serum opsonic activity

et al. 2009

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Sumo is a traditional Japanese sport, but the effect of actual daily training on neutrophil function is unknown. We evaluated the effect of sumo training on serum opsonic activity (SOA), which is one of the main neutrophil-related functions. Seventeen male university sumo wrestlers participated in the study. Changes in anthropometric parameters, concentrations of serum immunoglobulins (IgG, IgA and IgM), complements (C3 and C4), myogenic enzymes (lactate dehydrogenase, asparate aminotransferase, alanine aminotransferase and creatine kinase), white blood cell/neutrophil counts and SOA were measured immediately before and after actual daily training for 2.5 h. Compared with the pre-values, immunoglobulins and complements, myogenic enzymes and white blood cell/neutrophil counts significantly increased (p < 0.01 for all). As for SOA, the values of the peak height and the area under the curve significantly increased after the training when assessed using lucigenin as a chemiluminigenic probe (p < 0.01 for all), but showed no significant change when luminol was used as the chemiluminigenic probe. In conclusion, daily actual sumo training for 2.5 h increases SOA, thus possibly activating the reactive oxygen species production of neutrophils.

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“…In the cases of Ni and Co, effects of these metals on the hemolyzing activity of CH-50 were measured and consumption of complements was observed at the same metal concentration at which SOA was elevated. (17,18) Exercise Several researchers have investigated the ROS production capabilityof circulating neutrophils following exercise, but have reported conflicting findings, with increases, (3,(19)(20)(21)(22)(23)(24) decreases (2,20,(25)(26)(27)(28) or no change in the response. The variability in the findings could be attributable to the difference in the intensity and duration of exercise, or the sampling point for the assessment.…”

Section: Factors Influencing Neutrophil Ros Production 59mentioning

confidence: 99%

“…Indeed, consistent findings of a "delayed-onset" enhancement have been reported, whether immediately after "prolonged" endurance exercise longer than 1 hour at higher than 60% of the maximum oxygen consumption ( . VO 2 max), (19,22,24) or during the "recovery" period after acute exhaustive exercise, (20 23,26) despite variations in the methodological procedures.…”

Section: Factors Influencing Neutrophil Ros Production 59mentioning

confidence: 99%

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Effects of Low Incident Levels of Laser Irradiation and Other Environmental Factors on the Production Capability of Reactive Oxygen Species From Human Neutrophils

et al. 2005

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In order to evaluate the relationship between reactive oxygen species (ROS) production from human neutrophils and the health of the organism, we developed a new technique and apparatus to measure ROS, and studied the relationship between ROS production and many kinds of environmental factors, such as the circadian rhythm, various degrees of exercise loading and training, diet, alcohol, smoking, and other environmental factors. ROS production and serum opsonic activity did not significantly change at levels of up to 50-60% of . VO 2 max, as advocated by the Japanese Ministry of Health, Labour and Welfare, but in the case of exercise overloading to more than 65% . VO 2 max, ROS production increased. On the other hand, when neutrophils were exposed to environmental factors, e.g., ethanol, minerals, interferon, laser, ultraviolet light and so on, at a low density, ROS production from neutrophils was only slightly enhanced. However, when neutrophils were exposed to the same environmental factors at an excessive density, ROS production significantly decreased. Given that small increases in ROS production from neutrophils are beneficial to the organism, as many researchers have reported, ROS production at low density exposure to environmental factors may increase the autoimmunocompetency of the organism, in other words, it is good for the health. Furthermore, ROS production and serum opsonic activity showed an inverse relationship in many kinds of environment, indicating a mutual compensatory mechanism to maintain the homeostasis of the autoimmune system.

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Changes in the Production of Reactive Oxygen Species from Neutrophils Following a 100-km Marathon.

Cited by 23 publications

References 10 publications

Motivations and psychological characteristics of Japanese ultra-marathon runners using Myers-Briggs type indicator

Motivations and psychological characteristics of Japanese ultra-marathon runners using Myers-Briggs type indicator

Effects of 2.5‐hour sumo training on serum opsonic activity

Effects of Low Incident Levels of Laser Irradiation and Other Environmental Factors on the Production Capability of Reactive Oxygen Species From Human Neutrophils

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