足首のバネを鍛えるトレーニングとテスト方法＋ケア＆栄養摂取（足首固定？つま先接地？アキレス腱を鍛える？）

To run fast, it's extremely important to be able to use your ankles like a stiff spring. To run fast, you move from here to there quickly, so the time your feet are on the ground is extremely short. During that ultra-short time with your feet on the ground, you need to withstand the huge impact of your own weight falling down and lift your body slightly. If your ankles aren't as flexible and bouncy as konjac at this time, it will take a long time to lift your body and it will be difficult to run fast, so the ability to use the area around your ankles like a stiff spring is extremely important. Here, we'll introduce training methods and concepts for enabling you to use the area around your ankles like a stiff spring, as well as how to assess this ability, and nutrition and care methods. Profile Yusuke Ozaki: Ph.D. in Education, JAAF Junior Coach 400m Hurdles: PB 50'00 (Nagasaki Prefecture Record) Hiroshima University Track and Field Club Coach PEACE AC Coach Nippon Kensetsu Kogyo AC Coach Mako Fukube Track and Field Theory and Practice ~ Sprint & Conditioning https://sprint-condition.info/ Recruiting Junior and Senior High School Athletes for 2023 (Hiroshima City & Higashihiroshima City) [PEACE AC] http://peace-rikujo.com/category9/ent... References ・Shaw, G., Lee-Barthel, A., Ross, M. L., Wang, B., & Baar, K. (2016). Vitamin C–enriched gelatin supplementation before intermittent activity augments collagen synthesis. The American Journal of Clinical Nutrition, 105(1), 136-143. ・Praet, S., Purdam, C., Welvaert, M., Vlahovich, N., Lovell, G., Burke, L., ... & Waddington, G. (2019). Oral upplementation of Specific Collagen Peptides Combined with Calf-Strengthening Exercises Enhances Function and Reduces Pain in Achilles Tendinopathy Patients. Nutrients, 11(1), 76. ・Morton, R. W., Murphy, K. T., McKellar, S. R., Schoenfeld, B. J., Henselmans, M., Helms, E., ... & Phillips, S. M. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. Br J Sports Med, 52(6), 376-384. ・Dorn, T.W., Schache, A. G., & Pandy, M. G. (2012). Muscular strategy shift in human running: dependence of running speed on hip and ankle muscle performance. Journal of Experimental Biology, 215(11), 1944-1956. ・Baxter, J. R., Novack, T. A., Van Werkhoven, H., Pennell, D. R., & Piazza, S. J. (2012). Ankle joint mechanics and foot proportions differ between human sprinters and non-sprinters. Proceedings of the Royal Society of London B: Biological Sciences, 279(1735), 2018-2024.