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I used to run seven acupuncture and osteopathy clinics in Shizuoka and Aichi, as well as support national team athletes as a sports trainer at world events such as the Sydney, Athens and Beijing Olympics and the World Cup.

At the forefront of the world, I witnessed that Japan lags behind compared to other countries in the field of "sports science".
I was convinced that "sports science is absolutely necessary for the further development of the Japanese sports world!" With this conviction, I set sports science as my life-long passion and began working to promote it in Japan.

As a first step, we opened a sports science academy for junior athletes called "Arrows Gym". It has contributed to the improvement of athletic performance of children who are not good at sports to junior athletes and top athletes.
Then in 2022, we entered a new stage. The Arrows Gym has been transformed into the Arrows Lab, which can support a variety of people in improving their health as well as their athletic performance, based on the vast amount of physical fitness data accumulated over the past 11 years on a total of more than 20,000 people.

Hospitals treat patients' illnesses and injuries with medicine, but Arrows Lab is a facility that examines and develops their health and athletic performance from a sports science perspective. Clinicians who have agreed with the idea - to support problems of not being sure how to approach their patients with sports science - have now joined hands one after another to open Arrows Labs as partners, and the number of partnerships is spreading nationwide.

Science is the history of mankind's efforts to understand the world.
We are unafraid to challenge ourselves to innovate and we want to leave a mark that we have taken the evolution of human society one step forward.
Through our continued efforts, we will realise our philosophy of " Making sports science part of the everyday ".

April 2022
SPORTS.JP Inc. President Norihide Yamashita

Adviser ;

Professor Tetsuo Fukunaga

PhD in Education, University of Tokyo
Field of expertise: Exercise physiology and biomechanics, training science
Professor Emeritus, University of Tokyo
Professor Emeritus, Waseda University
Professor Emeritus, National Institute of Fitness and Sports in KANOYA
President of Japan Society of Golf Sciences
President of Japan Society of Sports Performance
Honorary Member of Japan Society of Physical Education, Health and Sport Science
Honorary Member of Japanese Society of Physical Fitness and Sports Medicine
Director of SPORTS.JP Laboratory.


Japanese Society of Biomechanics Award
Muybridge Award
Prince Chichibu Commemorative Sports Medicine and Science Award
Orders of the Sacred Treasure



Main Articles

Miyamoto N, Wakahara T, Sugisaki N, Murata K, Kanehisa H, Fukunaga T, Kawakami Y.: Effect of countermovement on elbow joint extension power-load characteristics. J Sports Sci. 2010 Dec;28(14):1535-42.
Sugisaki N, Wakahara T, Miyamoto N, Murata K, Kanehisa H, Kawakami Y, Fukunaga T.: Influence of muscle anatomical cross-sectional area on the moment arm length of the triceps brachii muscle at the elbow joint.J Biomech. 2010 Oct 19;43(14):2844-7.
Mitsukawa N, Sugisaki N, Miyamoto N, Yanai T, Kanehisa H, Fukunaga T, Kawakami Y.: Fatigue-induced changes in synergistic muscle force do not match tendon elongation.J Biomech. 2010 May 28;43(8):1632-4.
Miyamoto N, Kanehisa H, Fukunaga T, Kawakami Y.: Effect of postactivation potentiation on the maximal voluntary isokinetic concentric torque in humans.J Strength Cond Res. 2011 Jan;25(1):186-92.
Asaka M, Usui C, Ohta M, Takai Y, Fukunaga T, Higuchi M.: Elderly oarsmen have larger trunk and thigh muscles and greater strength than age-matched untrained men. Eur J Appl Physiol. 2010 Apr;108(6):1239-45.
Akagi R, Takai Y, Kato E, Wakahara T, Ohta M, Kanehisa H, Fukunaga T, Kawakami Y.: Development of an equation to predict muscle volume of elbow flexors for men and women with a wide range of age. Eur J Appl Physiol. 2010 Mar;108(4):689-94.
Miyamoto N, Mitsukawa N, Sugisaki N, Fukunaga T, Kawakami Y.: Joint angle dependence of intermuscle difference in postactivation potentiation.Muscle Nerve. 2010 Apr;41(4):519-23.
Ushiyama J, Wakahara T, Masani K, Kouzaki M, Muraoka T, Fukunaga T, Kanehisa H.: Passive knee movement-induced modulation of the soleus H-reflex and alteration in the fascicle length of the medial gastrocnemius muscle in humans. J Electromyogr Kinesiol. 2010 Jun;20(3):513-22.
Abe T, Kawakami Y, Bemben MG, Fukunaga T. Comparison of age-related, site-specific muscle loss between young and old active and inactive Japanese women. J Geriatr Phys Ther. 2011 Oct-Dec;34(4):168-73
Akagi R, Iwanuma S, Fukuoka M, Kanehisa H, Fukunaga T, Kawakami Y.: Methodological issues related to thickness-based muscle size evaluation. J Physiol Anthropol. 2011;30(4):169-74
Abe T, Kawakami Y, Kondo M, Fukunaga T.: Comparison of ultrasound-measured age-related, site-specific muscle loss between healthy Japanese and German men. Clin Physiol Funct Imaging. 2011 Jul;31(4):320-5.
Herzog W, Sartorio A, Lafortuna CL, Kanehisa H, Fukunaga T, Dotan R, Falk B, Wood LE, Tonson A, Le Fur Y, Cozzone PJ, Bendahan D, Tolfrey K, Morse CI, O'Brien TD, Reeves ND, Baltzopoulos V, Jones DA, Maganaris CN, Lambertz D, Grosset JF, Perot C.: Commentaries on Viewpoint: can muscle size fully account for strength differences between children and adults? J Appl Physiol (1985). 2011 Jun;110(6):1750-3; discussion on page 1754.
Kinugasa R, Kawakami Y, Sinha S, Fukunaga T.: Unique spatial distribution of in vivo human muscle activation. Exp Physiol. 2011 Sep;96(9):938-48.
Sugisaki N, Kawakami Y, Kanehisa H, Fukunaga T.: Effect of muscle contraction levels on the force-length relationship of the human Achilles tendon during lengthening of the triceps surae muscle-tendon unit. J Biomech. 2011 Jul 28;44(11):2168-71.
Fujita E, Kanehisa H, Yoshitake Y, Fukunaga T, Nishizono H.: Association between knee extensor strength and EMG activities during squat movement. Med Sci Sports Exerc. 2011 Dec;43(12):2328-34.
Takai Y, Katsumata Y, Kawakami Y, Kanehisa H, Fukunaga T.: Ultrasound method for estimating the cross-sectional area of the psoas major muscle. Med Sci Sports Exerc. 2011 Oct;43(10):2000-4.
Iwanuma S, Akagi R, Kurihara T, Ikegawa S, Kanehisa H, Fukunaga T, Kawakami Y.: Longitudinal and transverse deformation of human Achilles tendon induced by isometric plantar flexion at different intensities. J Appl Physiol (1985). 2011 Jun;110(6):1615-21.
Abe T, Sakamaki M, Yasuda T, Bemben MG, Kondo M, Kawakami Y, Fukunaga T :Age-related, site-specific muscle loss in 1507 Japanese men and women aged 20 to 95 years. J Sports Sci Med. 2011 Mar 1;10(1):145-50.
Abe T, Thiebaud RS, Loenneke JP, Bemben MG, Loftin M, Fukunaga T.: Influence of severe sarcopenia on cardiovascular risk factors in nonobese men. Metab Syndr Relat Disord. 2012 Dec;10(6):407-12.
Hirayama K, Yanai T, Kanehisa H, Fukunaga T, Kawakami Y. : Neural modulation of muscle-tendon control strategy after a single practice session. Med Sci Sports Exerc. 2012 Aug;44(8):1512-8.
Wakahara T, Miyamoto N, Sugisaki N, Murata K, Kanehisa H, Kawakami Y, Fukunaga T, Yanai T.: Association between regional differences in muscle activation in one session of resistance exercise and in muscle hypertrophy after resistance training. Eur J Appl Physiol. 2012 Apr;112(4):1569-76.
Sakuma J, Kanehisa H, Yanai T, Fukunaga T, Kawakami Y.: Fascicle-tendon behavior of the gastrocnemius and soleus muscles during ankle bending exercise at different movement frequencies. Eur J Appl Physiol. 2012 Mar;112(3):887-98.
Takai Y, Ohta M, Akagi R, Kato E, Wakahara T, Kawakami Y, Fukunaga T, Kanehisa H.: Validity of ultrasound muscle thickness measurements for predicting leg skeletal muscle mass in healthy Japanese middle-aged and older individuals. J Physiol Anthropol. 2013 Sep 25;32:12.
Kanehisa H, Fukunaga T.: Association between body mass index and muscularity in healthy older Japanese women and men. J Physiol Anthropol. 2013 Mar 4;32(1):4.25. Oda T, Himeno R, Hay DC, Kanehisa H, Fukunaga T, Kawakami Y.: The activation time-course of contractile elements estimated from in vivo fascicle behaviours during twitch contractions. J Sports Sci. 2013;31(11):1233-41.
Wakahara T, Kanehisa H, Kawakami Y, Fukunaga T, Yanai T.: Relationship between muscle architecture and joint performance during concentric contractions in humans. J Appl Biomech. 2013 Aug;29(4):405-12.
Kanehisa H, Fukunaga T.: Age-related change in sit-to-stand power in Japanese women aged 50 years or older. J Physiol Anthropol. 2014 Aug 16;33:26.
Maeo S, Yoshitake Y, Takai Y, Fukunaga T, Kanehisa H.: Neuromuscular adaptations following 12-week maximal voluntary co-contraction training. Eur J Appl Physiol. 2014 Apr;114(4):663-73.
Abe T, Thiebaud RS, Loenneke JP, Loftin M, Fukunaga T.: Prevalence of site-specific thigh sarcopenia in Japanese men and women. Age (Dordr). 2014 Feb;36(1):417-26.
Abe T, Loenneke JP, Thiebaud RS, Fukunaga T.: Age-related site-specific muscle wasting of upper and lower extremities and trunk in Japanese men and women. Age (Dordr). 2014 Apr;36(2):813-21.
Yanagawa N, Shimomitsu T, Kawanishi M, Fukunaga T, Kanehisa H.: Sex difference in age-related changes in knee extensor strength and power production during a 10-times-repeated sit-to-stand task in Japanese elderly. J Physiol Anthropol. 2015 Nov 14;34:40.
Akagi R, Iwanuma S, Hashizume S, Kanehisa H, Fukunaga T, Kawakami Y.: Determination of contraction-induced changes in elbow flexor cross-sectional area for evaluating muscle size-strength relationship during contraction. J Strength Cond Res. 2015 Jun;29(6):1741-7.
Sugisaki N, Wakahara T, Murata K, Miyamoto N, Kawakami Y, Kanehisa H, Fukunaga T.: Influence of muscle hypertrophy on the moment arm of the triceps brachii muscle. J Appl Biomech. 2015 Apr;31(2):111-6.
Nakatani M, Takai Y, Akagi R, Wakahara T, Sugisaki N, Ohta M, Kawakami Y, Fukunaga T, Kanehisa H.: Validity of muscle thickness-based prediction equation for quadriceps femoris volume in middle-aged and older men and women. Eur J Appl Physiol. 2016 Dec;116(11-12):2125-2133.
Yanagawa N, Shimomitsu T, Kawanishi M, Fukunaga T, Kanehisa H.Relationship between performances of 10-time-repeated sit-to-stand and maximal walking tests in non-disabled older women. J Physiol Anthropol. 2016 Jun 27;36(1):2.

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