著者

髙山 史徳 森 寿仁 安藤 真由子 山本 正嘉

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.15032, (Released:2015-09-02)

参考文献数

33

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The main purpose of this study was to investigate anthropometry and body composition in 26 male ultramountain runners who participated in Trans Japan Alps Race 2014, a multi-stage ultramountain running race over 415 km to be covered within 5-8 days. The second purpose was to investigate the changes in skinfold thickness during the race. Before the race, all participants were examined in terms of body weight, BMI, skinfold thickness at 8 sites and estimated percentage body fat. In addition, the finishers (n=14) were re-examined in the post-race period. The main findings are summarized below.1. The participants had a mean (±SD) body weight of 62.3±5.1 kg, a BMI of 21.5±1.4 kg/m2, a sum of 8 skinfold thickness of 57.7±15.5 mm, and an estimated percentage body fat of 12.0±2.4%. There were no significant differences in any parameters between the finishers and the non-finishers.2. The sum of 8 skinfold thickness in the finishers was significantly reduced by 11.3% after the race (Pre : 55.0±13.6 mm, Post : 48.8±12.1 mm), representing a dramatic response in comparison with a previous study that investigated ultramarathon runners in a 100-km ultramarathon race (0.9%).

著者

髙山 史徳 鍋倉 賢治

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.67, no.4, pp.269-279, 2018-08-01 (Released:2018-07-18)

参考文献数

78

被引用文献数

1 1

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Marathon running performance closely related to the several physiological and performance variables such as maximal oxygen uptake, running economy, and peak velocity. It is well known that muscle damage has a negative impact on the physiological and performance variables. Thus, restarting training or participating in the race in a state where recovery is inadequate may cause injury and loss of race performance. The aims of this review article are to (1) summarize the previous studies that investigated effects of a marathon race on muscle damage and physiological and performance variables, (2) discuss the middle and long term effects of marathon races on physical condition, (3) suggest the practical strategy for some runners that participate in consecutive races within a short period.

著者

髙山 史徳 嶋津 航 青栁 篤 鍋倉 賢治

出版者

一般社団法人 日本体育学会

雑誌

体育学研究

巻号頁・発行日

2018

被引用文献数

1

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<p>Some recreational runners participate in consecutive races within a short period. A high frequency of participation may not allow for sufficient recovery time, leading to overreaching. This case study reports on the training load, physiological variables, performance, and psychometric status of a male recreational runner during the 16-week marathon season. The runner completed 4 marathon races in a period of 8 weeks (6-14 week). Training load was quantified based on the cumulative time spent in 3 intensity zones (zone 1: < ventilatory threshold, zone 2: between ventilatory threshold and respiratory compensation point, zone 3: < respiratory compensation point) using heart rate monitoring. The Hooper questionnaire was completed every morning to quantify sleep, stress, fatigue, and muscle soreness. The runner performed four identical treadmill running test over the season. The coefficient of variation for maximal velocity and physiological variables was 1.0% and 1.8‐5.2%, respectively. Pearson correlation showed significant relationships between training load and stress, fatigue, and muscle soreness. There was no significant relationship between training load and sleep. In conclusion, it appeared that this runner was able to complete 4 marathon races without overreaching. These findings suggest that the training load and Hooper questionnaire are practical tools for monitoring of recreational runners during the marathon season.</p>

著者

嶋津 航 髙山 史徳 丹治 史弥 鍋倉 賢治

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.18089, (Released:2019-05-15)

参考文献数

42

被引用文献数

2

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Heart rate (HR) monitoring, which reflects exercise intensity and environmental factors, is often used for pacing strategies in the marathon race. However, it is difficult to obtain appropriate feedback for only the HR value since cardiovascular drift (CV drift) occurs during prolonged exercise. Recently, cardiac cost (CC: HR divided by running velocity) has been shown to be a potential index for evaluation of CV drift during the marathon race. The aim of this study was to clarify the relationship between CV drift and performance in the marathon race. Fourteen male university student runners participated. They carried out incremental tests on a treadmill and took part in an actual marathon race. CV drift was evaluated from differences between CC in the 0-5-km section and over every 5-km section (ΔCC). The marathon performance was examined from two viewpoints: absolute performance (average running velocity during the race: Vmar), and relative performance (Vmar against velocity corresponding to ventilatory threshold: vVT achv.). Significant correlations were found between ΔCC and vVT achv. in the 25-30 km, 30-35 km and 35-40 km sections (r = −0.672, −0.671 and −0.661, respectively), suggesting that excessive CV drift had a negative impact on relative performance. We can therefore conclude that suppression of CV drift after 25 km is an important factor for improvement of relative performance.