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  2. 小川 剛司

小川 剛司

オガワ タケシ  (Takeshi Ogawa)

基本情報

所属
大阪教育大学 表現活動教育系 准教授
学位
修士（体育学）(筑波大学)
博士(体育科学)(筑波大学)
J-GLOBAL ID
200901042206867275
researchmap会員ID
5000082154

研究キーワード

 10

研究分野

 3

経歴

 11
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学歴

 6
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受賞

 1

論文

 27
  • Jun Koike, Takeshi Ogawa
    Research quarterly for exercise and sport 1-13 2024年7月10日  査読有り最終著者責任著者
    Purpose: This study evaluated the effects of exercise training (ET) and inspiratory muscle-loaded exercise training (IMLET) on ventilatory response and intercostal muscle deoxygenation levels during incremental cycling exercise. Methods: Twenty-one male participants were randomly divided into IMLET (n = 10) or ET (n = 11) groups. All participants underwent a 4-week cycling exercise training at 60% peak oxygen uptake. IMLET loaded 50% of maximal inspiratory pressure (PImax). Respiratory muscle strength test, respiratory muscle endurance test (RMET), resting hypoxic ventilatory responsiveness (HVR) test, and incremental cycling test were performed pre- and post-training. Results: The extent of improvement in the PImax was significantly greater in the IMLET group (24%) than in the ET group (8%) (p = .018), and an extended RMET time was observed in the IMLET group (p < .001). Minute ventilation (V˙E) during exercise was unchanged in both groups before and after training, but tidal volume during exercise increased in the IMLET group. The increase in the exercise intensity threshold for muscle deoxygenation was similar in both groups (p < .001). HVR remained unchanged in both groups post-training. The exercise duration for the incremental exercise until reaching fatigue increased by 7.9% after ET and 6.9% after IMLET (p < .001). Conclusion: The 4-week IMLET improved respiratory muscle strength and endurance but did not alter HVR. Respiratory muscle deoxygenation was alleviated by exercise training, with a limited impact of inspiratory load training.
  • 胡 暁越, 小池 潤, 小川 剛司
    大阪教育大学紀要. 人文社会科学・自然科学 72 21-29 2024年2月29日  査読有り責任著者
  • 小川剛司
    デサントスポーツ科学(Web) 44 2023年  
  • Takeshi Ogawa, Jun Koike, Yuka Hirano
    Scientific Reports 12(1) 2022年12月24日  査読有り筆頭著者責任著者
    Abstract We aimed to determine the effects of wearing a cloth face mask on cardiorespiratory response, peak oxygen uptake (Vo2), respiratory muscle effort, and exercise tolerance during incremental exercise. The study had a randomized crossover design: 11 apparently healthy young men performed the Bruce protocol treadmill test in two conditions, wearing a cloth face mask (CFM) and without CFM (CON), in random order. Minute ventilation and oxygen uptake were measured using a mass spectrometry metabolic analyzer; cardiac output (CO) was measured using an impedance CO monitor; and mouth pressure (Pm) was measured and calculated as an integral Pm to assess respiratory muscle effort. Maximal minute ventilation was 13.4 ± 10.7% lower in the CFM condition than in the CON condition (P &lt; 0.001). The peak Vo2 (52.4 ± 5.6 and 55.0 ± 5.1 mL/kg/min in CFM and CON, respectively) and CO were not significantly different between the two conditions. However, the integral value of Pm was significantly higher (P = 0.02), and the running time to exhaustion was 2.6 ± 3.2% lower (P = 0.02) in the CFM condition than in the CON condition. Our results suggest that wearing a cloth face mask increased respiratory muscle effort and decreased ventilatory volume in healthy young men; however, Vo2 remained unchanged. Exercise tolerance also decreased slightly.
  • Yinhang Cao, Naoto Fujii, Tomomi Fujimoto, Yin-Feng Lai, Takeshi Ogawa, Tsutomu Hiroyama, Yasushi Enomoto, Takeshi Nishiyasu
    High altitude medicine & biology 23(2) 125-134 2022年6月  査読有り
    Cao, Yinhang, Naoto Fujii, Tomomi Fujimoto, Yin-Feng Lai, Takeshi Ogawa, Tsutomu Hiroyama, Yasushi Enomoto, and Takeshi Nishiyasu. CO2-enriched air inhalation modulates the ventilatory and metabolic responses of endurance runners during incremental running in hypobaric hypoxia. High Alt Med Biol. 23:125-134, 2022. Aim: We measured the effects of breathing CO2-enriched air on ventilatory and metabolic responses during incremental running exercise under moderately hypobairc hypoxic (HH) conditions. Materials and Methods: Ten young male endurance runners [61.4 ± 6.0 ml/(min·kg)] performed incremental running tests under three conditions: (1) normobaric normoxia (NN), (2) HH (2,500 m), and (3) HH with 5% CO2 inhalation (HH+CO2). The test under NN was always performed first, and then, the two remaining tests were completed in random and counterbalanced order. Results: End-tidal CO2 partial pressure (55 ± 3 vs. 35 ± 1 mmHg), peak ventilation (163 ± 14 vs. 152 ± 12 l/min), and peak oxygen uptake [52.3 ± 5.5 vs. 50.5 ± 4.9 ml/(min·kg)] were all higher in the HH+CO2 than HH trial (all p < 0.01), respectively. However, the duration of the incremental test did not differ between HH+CO2 and HH trials. Conclusion: These data suggest that chemoreflex activation by breathing CO2-enriched air stimulates breathing and aerobic metabolism during maximal intensity exercise without affecting exercise performance in male endurance runners under a moderately hypobaric hypoxic environment.
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MISC

 35
  • 山方 諒平, 小川 剛司
    日本体育・スポーツ・健康学会予稿集 72 327 2022年  
    【背景】陸上競技短距離走のパフォーマンス向上のためのトレーニングとして、ジャンプトレーニング(jumpT)やランニングドリルが行われている。近年、jumpTをトランポリンを用いて行うことで短距離走能力が向上することは報告されているが、陸上短距離選手が行うようなjumpTやランニングドリルをトランポリンを用いて行うことで短距離走パフォーマンスが向上するかは明らかではない。 【目的】陸上競技選手において、トランポリンを用いたjumpTおよびランニングドリルは短距離走パフォーマンス改善をもたらすかを明らかにすることを目的とした。 【方法】16名の大学陸上競技短距離選手はランダムにトランポリントレーニング群(TG)と土トレーニング群(GG)に分けられ、12週間に渡って週4回、jumpTおよびランニングドリルを実施した。TGではトレーニングをミニトランポリン上で行った。トレーニング期間前後において50m走を行い、記録測定および疾走時の動作分析を行った。短距離疾走接地時の地面反力を測定した。ドロップジャンプ(DJ)テストを行い、跳躍高および地面反力を測定した。 【結果・考察】50m走の記録はトレーニングによって両グループとも有意に向上した(p<0.05)。最大疾走局面の疾走動作について、両グループともにトレーニング期間後においてトレーニング前よりも接地時足関節角度の有意な低下(P<0.05)および、支持脚の股関節伸展角速度の増加が見られた。短距離疾走時の地面反力に有意な変化は見られなかった。DJテストにおけるTGにおいて跳躍高および垂直力積はトレーニング期間後に有意に低下した(P<0.05)。 【結語】陸上競技短距離選手においてトランポリンを用いたジャンプトレーニングおよびランニングドリルは、パフォーマンス向上および疾走動作変化に対して、地面で行った時と差がないことが示唆された。
  • 畑浦 秀哉, 河合 和司, 鍋倉 賢治, 小川 剛司
    日本体育・スポーツ・健康学会予稿集 71 161 2021年  
    【緒言】短時間運動時の血中乳酸濃度(BLa)当たりの走速度をスプリントエコノミー(SE)として評価する試みがなされている。しかしながら、BLaは無酸素代謝量を定量できない。本研究は、酸素借(AOD)を用いてSEを算出し、短時間運動パフォーマンスとの関係を検討することを目的とした。【方法】対象者は体育会陸上競技部に所属する男子大学生15名（100m：4名、400m：5名、800m：6名）であった。自転車エルゴメーターを用いて、①最大下負荷テストおよび疲労困憊までの漸増負荷運動テスト、②最大酸素借(MAOD)テスト、③3強度で30秒間のスプリントテスト(120%VO2max、150%VO2max、180%VO2max)を行った。また、短時間運動パフォーマンスを評価するために30秒間のWingateテストを行った。SEは3強度のスプリントテストにおける仕事率に対してAODをプロットし、その傾きの逆数とした。SEの高さによって対象者をhigh群とlow群に分けた。高いSEは、運動強度が上がっても、より少ない無酸素代謝量で運動を行うことができることを意味する。【結果】high群はlow群よりもWingateテスト中の平均パワーが有意に高かった(p<0.05)。また、MAODはhigh群とlow群との間に差はなかったものの、VO2maxはhigh群でlow群よりも有意に低かった。対象者の専門種目間で検討したところ、SEは、400m、100m、800mの順に高値を示したことから、種目特性によってSEが異なることが示唆された。【結論】AODによって評価されたSEは、短時間運動パフォーマンスの高さと関係することが示唆された。また、SEは有酸素および無酸素能力の高さによって決定されるものではないことが示唆された。SEを用いて種目適正の判断やスプリントパフォーマンスの評価ができる可能性がある。
  • 森谷 公亮, 小川 剛司, 井田 健太郎, 菅根 大幹
    日本体育学会大会予稿集 69 128_3-128_3 2018年  
    本研究は陸上短距離選手における運動強度評価を、簡易スケールを用いてトレーニングインパルス（TRIMP）を算出し、パフォーマンス変動との関連を検討することを目的とした。対象者は大学陸上短距離選手9名であった。運動強度の記録はトレーニング内容から選択するスケールから評価し、運動強度と運動時間の積をTRIMPとして算出し、TRIMPを標準偏差で除した値を単調性として、単調性とTRIMPの積をStrengthとして算出した。また、体調の指標として起床時心拍および体温を記録した。その結果、自己記録更時とそうでない時のTRIMPの変動ににおけるTRIMPsおよびStrengthは、2か月前から試合月に向けて低下する傾向にあった。ケガ発生との関連を見たところ、ケガ発生者ではケガが発生しなかった者と比較して、単調性およびStrengthが急激に増加する傾向を示した。また、TRIMPの変動から競技記録予測を行ったところ、実際の記録との間に有意な正の相関関係が見られ、算出式の係数および時定数は先行研究と一致し、本研究のトレーニング定量モデルの妥当性が示唆された。
  • 藤井, 直人, 林, 恵嗣, 小川, 剛司, 近藤, 徳彦, 古賀, 俊策, 西保, 岳
    体力科學 57(6) 810 2008年12月  
  • 小川, 剛司, 藤井, 直人, 吉武, 成美, 松本, 真由美, 西保, 岳
    体力科學 57(6) 818 2008年12月  
  • 吉武, 成美, 藤井, 直人, 小川, 剛司, 松本, 真由美, 西保, 岳
    体力科學 57(6) 697 2008年12月  
  • Takeshi Ogawa, Naoto Fujii, Yasuhiro Kurimoto, Yasushi Honda, Takeshi Nishiyasu
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE 40(5) S170-S170 2008年5月  
  • Naoto Fujii, Yasushi Honda, Keiji Hayashi, Takeshi Ogawa, Narihiko Kondo, Takeshi Nishiyasu
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE 40(5) S189-S189 2008年5月  
  • 藤井, 直人, 朴, 恵嗣, 小川, 剛司, 近藤, 徳彦, 西保, 岳
    体力科學 56(6) 722 2007年12月  
  • 小川, 剛司, 藤井, 直人, 西保, 岳
    体力科學 56(6) 726 2007年12月  
  • 増田, 光治, 小川, 剛司, 藤井, 直人, 西保, 岳
    体力科學 56(6) 738 2007年12月  
  • Takeshi Ogawa, Keiji Hayashi, Masashi Ichinose, Hiroyuki Wada, Takeshi Nishiyasu
    EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY 99(1) 39-46 2007年1月  
    The purpose of this study was to determine whether the metabolic response and running performance during intermittent graded sprint running were affected by moderate hypobaric hypoxia (H; 2,500 m above sea level) in competitive middle-distance runners. Nine male runners performed intermittent graded sprint running until exhaustion, to evaluate the metabolic response and running performance in H and normobaric normoxia (N). The test constructed of incremental (25 m min(-1)) 20 s running bouts (4 degrees inclination) interspaced with 100 s recovery periods. Maximal running speed was not different: between conditions [453 (7) m min(-1) vs. 458 (4) m min(-1) in N vs. H]. V-O2 at each speed was lower in H than N (ANOVA; P &lt; 0.05). Although, oxygen deficit (D-O2) at each speed was not different between N and H (ANOVA; P = 0.1), total accumulated D-O2 in all bouts was significantly higher in H than N [165 (10) ml kg(-1) in N and 173 (10) ml kg(-1) in H]. The ratio of D-O2-V-O2(-1) was similar in all bouts, but higher in H than N. These results suggest that intermittent graded sprint running performance is not affected by moderate hypobaria despite a reduction in the energy supplied by aerobic metabolism due to a compensatory increase in the energy supplied by the anaerobic metabolism in competitive middle-distance runners.
  • Takeshi Ogawa, Keiji Hayashi, Masashi Ichinose, Hiroyuki Wada, Takeshi Nishiyasu
    European journal of applied physiology 99(1) 39-46 2007年1月  
    The purpose of this study was to determine whether the metabolic response and running performance during intermittent graded sprint running were affected by moderate hypobaric hypoxia (H; 2,500 m above sea level) in competitive middle-distance runners. Nine male runners performed intermittent graded sprint running until exhaustion, to evaluate the metabolic response and running performance in H and normobaric normoxia (N). The test constructed of incremental (25 m min(-1)) 20 s running bouts (4 degrees inclination) interspaced with 100 s recovery periods. Maximal running speed was not different: between conditions [453 (7) m min(-1) vs. 458 (4) m min(-1) in N vs. H]. V-O2 at each speed was lower in H than N (ANOVA; P &lt; 0.05). Although, oxygen deficit (D-O2) at each speed was not different between N and H (ANOVA; P = 0.1), total accumulated D-O2 in all bouts was significantly higher in H than N [165 (10) ml kg(-1) in N and 173 (10) ml kg(-1) in H]. The ratio of D-O2-V-O2(-1) was similar in all bouts, but higher in H than N. These results suggest that intermittent graded sprint running performance is not affected by moderate hypobaria despite a reduction in the energy supplied by aerobic metabolism due to a compensatory increase in the energy supplied by the anaerobic metabolism in competitive middle-distance runners.
  • 林恵嗣, 林恵嗣, 本田靖, 小川剛司, 古賀俊策, 近藤徳彦, 西保岳
    日本生理人類学会誌 12 2007年  
  • 小川, 剛司, 林, 恵詞, 藤井, 直人, 西保, 岳
    体力科學 55(6) 756 2006年12月  
  • K Hayashi, Y Honda, T Ogawa, N Kondo, T Nishiyasu
    JOURNAL OF APPLIED PHYSIOLOGY 100(2) 414-420 2006年2月  
    We examined whether an increase in skin temperature or the rate of increase in core body temperature influences the relationship between minute ventilation (V.E) and core temperature during prolonged exercise in the heat. Thirteen subjects exercised for 60 min on a cycle ergometer at 50% of peak oxygen uptake while wearing a suit perfused with water at 10 degrees C (T10), 35 degrees C (T35), or 45 degrees C (T45). During the exercise, esophageal temperature (Tes), skin temperature, heart rate (HR), V. E, tidal volume, respiratory frequency (f), respiratory gases, blood pressure ( BP), and blood lactate were all measured. We found that oxygen uptake, carbon dioxide output, BP, and blood lactate did not differ among the sessions. Tes, HR, V. E, and f remained nearly constant from minute 10 onward in the T10 session, but all of these parameters progressively increased in the T35 and T45 sessions, and significantly higher levels were seen in the T45 than the T35 session. For all but two subjects in the T35 and T45 sessions, plotting V. E as a function of Tes revealed no threshold for hyperventilation; instead, increases in V. E were linearly related to Tes, and there were no significant differences in the slopes or intercepts between the T35 and T45 sessions. Thus, during prolonged submaximal exercise in the heat, V. E increases with core temperature, and the influences of skin temperature and the rate of increase in Tes on the relationship between V. E and Tes are apparently small.
  • K Hayashi, Y Honda, T Ogawa, N Kondo, T Nishiyasu
    JOURNAL OF APPLIED PHYSIOLOGY 100(2) 414-420 2006年2月  
    We examined whether an increase in skin temperature or the rate of increase in core body temperature influences the relationship between minute ventilation (V.E) and core temperature during prolonged exercise in the heat. Thirteen subjects exercised for 60 min on a cycle ergometer at 50% of peak oxygen uptake while wearing a suit perfused with water at 10 degrees C (T10), 35 degrees C (T35), or 45 degrees C (T45). During the exercise, esophageal temperature (Tes), skin temperature, heart rate (HR), V. E, tidal volume, respiratory frequency (f), respiratory gases, blood pressure ( BP), and blood lactate were all measured. We found that oxygen uptake, carbon dioxide output, BP, and blood lactate did not differ among the sessions. Tes, HR, V. E, and f remained nearly constant from minute 10 onward in the T10 session, but all of these parameters progressively increased in the T35 and T45 sessions, and significantly higher levels were seen in the T45 than the T35 session. For all but two subjects in the T35 and T45 sessions, plotting V. E as a function of Tes revealed no threshold for hyperventilation; instead, increases in V. E were linearly related to Tes, and there were no significant differences in the slopes or intercepts between the T35 and T45 sessions. Thus, during prolonged submaximal exercise in the heat, V. E increases with core temperature, and the influences of skin temperature and the rate of increase in Tes on the relationship between V. E and Tes are apparently small.
  • 林, 恵嗣, 小川, 剛司, 近藤, 徳彦, 西保, 岳
    体力科學 54(6) 571 2005年12月  
  • 北, 智弘, 小川, 剛司, 永井, 純, 宮下, 憲, 西保, 岳
    日本体育学会大会予稿集 (56) 245 2005年11月  
  • 小川, 剛司, 北, 智弘, 永井, 純, 宮下, 憲, 西保, 岳
    日本体育学会大会予稿集 (56) 245 2005年11月  
  • T Ogawa, K Ohba, Y Nabekura, J Nagai, K Hayashi, H Wada, T Nishiyasu
    EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY 94(3) 254-261 2005年6月  
    This study investigated whether in trained middle-distance runners, intermittent short-term graded running performance is affected by a hypobaric hypoxic environment (simulated 2,500 m) (H). Seven male middle-distance runners performed an aerobic performance test and an intermittent short-term graded anaerobic running-performance test (MART) both in H and in a normobaric normoxic environment (N). VO2max and OBLA were markedly lower (by 18.1% and 8.7%, respectively) in H than in N. In MART, neither maximal running velocity (V-max) nor exhaustion-time was different between N and H (454 (7) m min(-1) vs. 451 (6) m min(-1), respectively, and 208.7 (5.2) s vs. 205.7 (4.2) s, respectively). The blood lactate concentration at sub-maximal running speed (425m min(-1)) was significantly greater in H than in N (paired t-test: P&LT; 0.05). These results suggest that, in trained middle-distance runners, intermittent short-term graded running performance is not affected by H, despite a considerable decrease in aerobic power in H during the aerobic performance test.
  • Takeshi Ogawa, Keiichi Ohba, Yoshiharu Nabekura, Jun Nagai, Keiji Hayashi, Hiroyuki Wada, Takeshi Nishiyasu
    European journal of applied physiology 94(3) 254-61 2005年6月  
    This study investigated whether in trained middle-distance runners, intermittent short-term graded running performance is affected by a hypobaric hypoxic environment (simulated 2,500 m) (H). Seven male middle-distance runners performed an aerobic performance test and an intermittent short-term graded anaerobic running-performance test (MART) both in H and in a normobaric normoxic environment (N). VO2max and OBLA were markedly lower (by 18.1% and 8.7%, respectively) in H than in N. In MART, neither maximal running velocity (V-max) nor exhaustion-time was different between N and H (454 (7) m min(-1) vs. 451 (6) m min(-1), respectively, and 208.7 (5.2) s vs. 205.7 (4.2) s, respectively). The blood lactate concentration at sub-maximal running speed (425m min(-1)) was significantly greater in H than in N (paired t-test: P&LT; 0.05). These results suggest that, in trained middle-distance runners, intermittent short-term graded running performance is not affected by H, despite a considerable decrease in aerobic power in H during the aerobic performance test.
  • Keiji Hayashi, Yasushi Honda, Takeshi Ogawa, Narihiko Kondo, Takeshi Nishiyasu
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE 37 S167-S167 2005年5月  
  • 藤井 直人, 小川 剛司, 北 智弘, 西保 岳
    体力科學 53(6) 806-806 2004年12月1日  
  • 林, 恵嗣, 小川, 剛司, 近藤, 徳彦, 西保, 岳
    体力科學 53(6) 789 2004年12月  
  • 北, 智弘, 藤井, 直人, 小川, 剛司, 西保, 岳
    体力科學 53(6) 790 2004年12月  
  • 小川, 剛司, 林恵, 嗣, 西保, 岳
    体力科學 53(6) 797 2004年12月  
  • M Ichinose, M Saito, T Ogawa, K Hayashi, N Kondo, T Nishiyasu
    AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY 287(5) H2147-H2153 2004年11月  
    We tested the hypothesis that orthostatic stress would modulate the arterial baroreflex (ABR)mediated beat-by-beat control of muscle sympathetic nerve activity (MSNA) in humans. In 12 healthy subjects, ABR control of MSNA ( burst incidence, burst strength, and total activity) was evaluated by analysis of the relation between beat-by-beat spontaneous variations in diastolic blood pressure (DAP) and MSNA during supine rest ( CON) and at two levels of lower body negative pressure ( LBNP: - 15 and - 35 mmHg). At - 15 mmHg LBNP, the relation between burst incidence ( bursts per 100 heartbeats) and DAP showed an upward shift from that observed during CON, but the further shift seen at - 35 mmHg LBNP was only marginal. The relation between burst strength and DAP was shifted upward at - 15 mmHg LBNP ( vs. CON) and further shifted upward at - 35 mmHg LBNP. At - 15 mmHg LBNP, the relation between total activity and DAP was shifted upward from that obtained during CON and further shifted upward at - 35 mmHg LBNP. These results suggest that ABR control of MSNA is modulated during orthostatic stress and that the modulation is different between a mild (nonhypotensive) and a moderate ( hypotensive) level of orthostatic stress.
  • M Ichinose, M Saito, T Ogawa, K Hayashi, N Kondo, T Nishiyasu
    AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY 287(5) H2147-H2153 2004年11月  
    We tested the hypothesis that orthostatic stress would modulate the arterial baroreflex (ABR)mediated beat-by-beat control of muscle sympathetic nerve activity (MSNA) in humans. In 12 healthy subjects, ABR control of MSNA ( burst incidence, burst strength, and total activity) was evaluated by analysis of the relation between beat-by-beat spontaneous variations in diastolic blood pressure (DAP) and MSNA during supine rest ( CON) and at two levels of lower body negative pressure ( LBNP: - 15 and - 35 mmHg). At - 15 mmHg LBNP, the relation between burst incidence ( bursts per 100 heartbeats) and DAP showed an upward shift from that observed during CON, but the further shift seen at - 35 mmHg LBNP was only marginal. The relation between burst strength and DAP was shifted upward at - 15 mmHg LBNP ( vs. CON) and further shifted upward at - 35 mmHg LBNP. At - 15 mmHg LBNP, the relation between total activity and DAP was shifted upward from that obtained during CON and further shifted upward at - 35 mmHg LBNP. These results suggest that ABR control of MSNA is modulated during orthostatic stress and that the modulation is different between a mild (nonhypotensive) and a moderate ( hypotensive) level of orthostatic stress.
  • K Hayashi, Y Honda, T Ogawa, H Wada, N Kondo, T Nishiyasu
    EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY 92(4-5) 414-420 2004年8月  
    We investigated the effects of brief leg cooling after moderate exercise on the cardiorespiratory responses to subsequent exercise in the heat. Following 40 min of ergometer cycling [65% peak oxygen uptake (.O-2peak)] at 35degreesC (Ex. 1), seven male subjects [21.9 (1.1) years of age; 170.9 (1.9) cm height; 66.0 (2.0) kg body mass; 46.7 (2.0) ml kg(-1) min(-1) .O-2peak] immersed their legs in 35degreesC (control condition, CONT) or 20degreesC (cooling condition, COOL) water for 5 min and then repeated the cycling (as before, but for 10 min) (Ex. 2). Just before Ex. 2, esophageal temperature (T-es) was lower in COOL than in CONT [36.9 (0.2) vs 37.5 (0.1)degreesC] (P&lt;0.01), as also were both mean skin temperature [33.9 (0.2) vs 35.2 (0.2)degreesC] (P&lt;0.01), and heart rate (HR) [93.2 (6.0) vs 102.7 (4.9) beats min(-1)] (P&lt;0.05). During Ex. 2, no differences between CONT and COOL were observed in oxygen uptake, arterial blood pressure, blood lactate concentration, or ratings of perceived exertion; however, T-es, skin temperature, and HR were lower in COOL than in CONT. Further, during the first 5 min of Ex. 2, minute ventilation was significantly lower in COOL than in CONT [50.3 (2.0) vs 53.4 (2.6) l min(-1)] (P&lt;0.01). These results suggest that brief leg cooling during the recovery period may be effective at reducing thermal and cardiorespiratory strain during subsequent exercise in the heat.
  • K Hayashi, Y Honda, T Ogawa, H Wada, N Kondo, T Nishiyasu
    EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY 92(4-5) 414-420 2004年8月  
    We investigated the effects of brief leg cooling after moderate exercise on the cardiorespiratory responses to subsequent exercise in the heat. Following 40 min of ergometer cycling [65% peak oxygen uptake (.O-2peak)] at 35degreesC (Ex. 1), seven male subjects [21.9 (1.1) years of age; 170.9 (1.9) cm height; 66.0 (2.0) kg body mass; 46.7 (2.0) ml kg(-1) min(-1) .O-2peak] immersed their legs in 35degreesC (control condition, CONT) or 20degreesC (cooling condition, COOL) water for 5 min and then repeated the cycling (as before, but for 10 min) (Ex. 2). Just before Ex. 2, esophageal temperature (T-es) was lower in COOL than in CONT [36.9 (0.2) vs 37.5 (0.1)degreesC] (P&lt;0.01), as also were both mean skin temperature [33.9 (0.2) vs 35.2 (0.2)degreesC] (P&lt;0.01), and heart rate (HR) [93.2 (6.0) vs 102.7 (4.9) beats min(-1)] (P&lt;0.05). During Ex. 2, no differences between CONT and COOL were observed in oxygen uptake, arterial blood pressure, blood lactate concentration, or ratings of perceived exertion; however, T-es, skin temperature, and HR were lower in COOL than in CONT. Further, during the first 5 min of Ex. 2, minute ventilation was significantly lower in COOL than in CONT [50.3 (2.0) vs 53.4 (2.6) l min(-1)] (P&lt;0.01). These results suggest that brief leg cooling during the recovery period may be effective at reducing thermal and cardiorespiratory strain during subsequent exercise in the heat.
  • 小川, 剛司, 林, 恵嗣, 鍋倉, 賢治, 西保, 岳
    体力科學 52(6) 725 2003年12月  
  • 林, 恵嗣, 斎藤, 満, 小川, 剛司, 一之瀬, 真志, 近藤, 徳彦, 西保, 岳
    体力科學 52(6) 720 2003年12月  
  • 林, 恵嗣, 近藤, 徳彦, 小川, 剛司, 西保, 岳
    体力科學 51(6) 599 2002年12月  
  • 小川, 剛司, 林, 恵嗣, 鍋倉, 賢治, 西保, 岳
    体力科學 51(6) 688 2002年12月  

書籍等出版物

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 5

所属学協会

 5

共同研究・競争的資金等の研究課題

 12
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