800mランナーの生理学的変数と走パフォーマンスの縦断的変化の関係 Relationships between longitudinal changes in physiological capacities and running performance in 800-m runners

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<p>    We aim to clarify relationships between longitudinal changes in aerobic and anaerobic energy metabolism capacities and training in well-trained 800-m runners, and to identify strategies for effective 800-m training. Eight male middle-distance runners (800-m seasonal best time, 1′53″7±1″6) participated. Their 800-m running performances were set the best competition time in April-June and July-November, and calculated average running velocity. Three running tests on a treadmill were conducted to determine aerobic (maximal oxygen uptake [VO<sub>2</sub>max], lactate threshold [LT] and running economy [RE]) and anaerobic (maximal accumulated oxygen deficit [MAOD] and maximal blood lactate accumulation [LAmax]) energy metabolism capacities in July and November. Δ (%) represents changes in 800-m running performance and aerobic and anaerobic energy metabolism capacities. Training during this period was used to evaluate length of training time, and training ratio by three intensities; below the LT (zone 1), at or above the LT and below the VO<sub>2 </sub>max (zone 2) and at or above the VO<sub>2</sub>max (zone 3). Δ800-m running performance showed a positive tendency relationship with ΔRE and ΔLAmax ( <i>r</i>=0.67 and 0.70, respectively), and a negative tendency relationship with zone 1 training ratio (<i>r</i>=-0.70). Further, ΔRE and ΔLAmax were negatively associated with zone 1 training ratio (<i>r</i>=-0.90 and -0.79, respectively), and positive associated with zone 3 training ratio (<i>r</i>=0.79 and 0.75, respectively). Thus, improved RE and/or LAmax may improve 800-m running performance, and increasing high-intensity (>VO<sub>2</sub>max) training during a competitive period can improve these energy metabolism capacities.</p>


  • The Japan Journal of Coaching Studies

    The Japan Journal of Coaching Studies 32(1), 79-88, 2018

    The Japan Journal of Coaching Studies


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