著者

中垣 浩平 尾野藤 直樹

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

vol.59, no.1, pp.283-295, 2014 (Released:2014-06-13)

参考文献数

16

被引用文献数

1

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The purpose of this study was to evaluate the utility of simplified quantification of training in for a Japanese national canoe sprint team using the modified session rating of perceived exertion method. We recorded the team's training using a method that integrates the original weighting factor (WF) and the duration (time) of the training session. Training load was quantified as the product of WF and time. Training monotony was calculated by as the mean daily load divided to the standard deviation of load. Training strain was calculated by multiplying the weekly training load by training monotony. A fitness-fatigue model was applied to the relationships between training load and performance. The model-predicted performance using the training load was significantly correlated with actual paddling performance. The training load and strain were significantly correlated with resting heart rate in the early morning. These results suggest that simplified quantification of training can be used to prescribe training for the improvement of performance and the prevention of overtraining syndrome.

著者

中垣 浩平 尾野藤 直樹

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.13034, (Released:2014-01-23)

参考文献数

16

被引用文献数

1

---

The purpose of this study was to evaluate the utility of simplified quantification of training in for a Japanese national canoe sprint team using the modified session rating of perceived exertion method. We recorded the team's training using a method that integrates the original weighting factor (WF) and the duration (time) of the training session. Training load was quantified as the product of WF and time. Training monotony was calculated by as the mean daily load divided to the standard deviation of load. Training strain was calculated by multiplying the weekly training load by training monotony. A fitness-fatigue model was applied to the relationships between training load and performance. The model-predicted performance using the training load was significantly correlated with actual paddling performance. The training load and strain were significantly correlated with resting heart rate in the early morning. These results suggest that simplified quantification of training can be used to prescribe training for the improvement of performance and the prevention of overtraining syndrome.

著者

吉岡 利貢 中垣 浩平 篠田 知之 鍋倉 賢治

出版者

日本体力医学会

雑誌

体力科學 (ISSN:0039906X)

巻号頁・発行日

vol.53, no.6, 2004-12-01

著者

吉岡 利貢 中垣 浩平 中村 和照 向井 直樹 鍋倉 賢治

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.57, no.1, pp.237-248, 2012 (Released:2012-06-02)

参考文献数

29

被引用文献数

4 2

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The purpose of this study was to compare the physiological and morphological characteristics of J. Ndambiri, a Kenyan world-class long-distance runner (10,000 m personal best: 27:04.79), with runners belonging to the national corporate team (29:32.18±0:30.35). Oxygen uptake (VO2), heart rate, blood lactate concentration and stride frequency were measured during submaximal exercise on a treadmill (270, 290, 310, 330, 350 and 370 m/min velocities with 1% inclination). Peak oxygen uptake (VO2peak) was determined during the maximal exercise test. In addition, morphological parameters (length of thigh and shank, maximum circumference of thigh and shank, and cross-sectional area of the trunk, thigh and shank muscles) were determined using a tape measure and magnetic resonance imaging (MRI). Ndambiri was superior to Japanese runners in terms of not only running economy (65.0 vs 69.8±1.9 ml/kg/min at 330 m/min), but also blood lactate concentration (1.50 vs 2.59±0.74 mmol/l at 330 m/min), heart rate (159.8 vs 170.8±4.0 bpm at 330 m/min) during the submaximal running test and VO2peak (80.8 vs 76.3±2.4 ml/kg/min). In addition, the morphological characteristics of Ndambiri were also quite different from those of Japanese runners. In particular, Ndambiri's maximum shank circumference was much smaller than that of Japanese runners (32.0 vs 35.8±1.8 cm). Furthermore, the cross-sectional area of the gastrocnemius muscle, which composes the shank, was significantly correlated with the oxygen cost of running at 330 m/min (r=0.700). These findings indicate that the superior performance of Ndambiri is attributable to various factors such as a higher VO2peak, lower blood lactate concentration and heart rate, as well as running economy. In the future, it will be necessary to clarify the factors supporting these relationships between physiological variables and morphological characteristics.

著者

吉岡 利貢 中垣 浩平 向井 直樹 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

vol.54, no.1, pp.89-98, 2009-06-30 (Released:2009-11-05)

参考文献数

26

被引用文献数

4 5

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The aim of this study was to determine the relationship between muscle morphological characteristics and running performance. Eighteen elite Japanese male distance runners (10000 m, seasonal best time 29:39.74±0:32.54) completed five 4-min submaximal and approximately 10-min maximal progressive treadmill tests to determine running economy (VO2 at submaximal velocity) and maximal oxygen uptake (VO2max). Axial images of the trunk, thigh and shank muscles were taken by magnetic resonance imaging (MRI). From these images, cross-sectional areas (CSAs) of the psoas major, quadriceps femoris, rectus femoris, vastus muscle, hamstring, sartoris, adductor magnus, adductor longus, gracilis, triceps surae, soleus and gastrocnemius were measured. The CSAs were divided by lean-body-mass0.67 measured by air-displacement plethysmography. The mean running economy (VO2 at 310 m/min) was 70.9 ml/kgLBM/min and VO2max was 82.0±4.3 ml/kgLBM/min (76.1±3.2 ml/kgBM/min). Simple correlation analysis revealed a negative association between hamstring CSA and 10000 m time (r=−0.681, p<0.05). On the other hand, quadriceps femoris CSA was positively associated with 10000 m time (r=0.637, p<0.05). Furthermore, triceps surae CSA was significantly correlated with running economy (r=0.573, p<0.05). Thus, these results suggest that hamstring CSA can explain long distance as well as sprint performance.