- Kawakami, Y., Muraoka, Y., Kubo, K., Akima, H., Suzuki, Y., Gunji, A., Fukunaga, T. Effects of 20 days of bed rest with and without resistance exercise on size, architecture, and force production of human skeletal muscles (symposium). 4th symposium of "Inactivity (prolonged bed-rest), Health and Aging", Saitama, April 10, 2000.
- Kawakami, Y., Fukunaga, T. Human skeletal muscle biomechanics-in vivo approach by ultrasonography-(tutorial lecture). XVIIIth Congress of the International Society of Biomechanics, Zurich, July 9-13, 2001.
- Kawakami, Y. Architecture of human skeletal muscles and its functional implications (symposium). Advances in Neural and Architectural Mechanisms That Control Muscle Activity and Movement, Tokyo, October 20, 2001.
- Kawakami, Y., Shimoda, M., Oishi, Y., Oda, T., Chino, K., Kurihara, T., Kanehisa, H., Fukunaga, T. Different fatigue responses of triceps surae muscles to repeated isometric contractions revealed by in vivo fascicle length changes (symposium). Banff Symposium on Skeletal Muscle, Banff, August 2-3, 2002.
- Kawakami, Y., Kurihara, T., Chino, K., Oda, T., Nosaka, K., Fukunaga, T. Changes in mechanical properties of human tibialis anterior muscle following repeated eccentric contractions (symposium). 4th World Congress of Biomechanics, Calgary, August 4-9, 2002.
- Kawakami, Y., Oda, T., Chino, K., Kurihara, T., Nagayoshi, T., Kanehisa, H., Fukunaga, T. In vivo muscle fiber behavior in humans (symposium). World Congress on Medical Physics and Biomedical Engineering. Sydney, August 24-29, 2003.
- Kawakami, Y. Analysis of human skeletal muscles by ultrasound (invited lecture). Conference of Korean Society of Sport Biomechanics. Ansan, March 20, 2004.
- Kawakami, Y., Huijing, P. A. J. B. M., Ito, M., Muraoka, Y., Kubo, K., Fukunaga, T. In vivo myofascial force transmission between passive EDL segments in humans (symposium). 14th European Society of Biomechanics Conference. s-Hergogenbosch, the Netherlands, July 4-7, 2004.
- Kawakami, Y. Strength training effects on muscle size and architecture: errors and interpretations (invited lecture). 4th International Conference of Strength Training. Serres, Greece, November 3-7, 2004.
- Kawakami, Y., Sugisaki, N., Chino, K., Kanehisa, H., Fukunaga, T. Behavior of Achilles tendon and gastrocnemius aponeurosis during concentric and eccentric plantar flexions (invited lecture). 19th Congress of the European College of Sport Science, Lausanne, July 5-8, 2006.
- Kawakami, Y., Sugisaki, N., Chino, K., Oda, T., Fukunaga, T. Tendon mechanical properties: influence of muscle actions (invited lecture). 5th World Congress of Biomechanics, Munich, July 30-August 4, 2006.
- Kawakami, Y. Design for effective power production in human movements: musculoskeletal perspective (symposium). International Symposium on Nature-Inspired Technology, Daejeon, Korea, 10/11-12, 2007.
- Kawakami, Y. In vivo ultrasound imaging of fasciae (Invited Speech). Second International Fascia Research Congress, Amsterdam, the Netherlands, 10/26-30, 2009.
- Kawakami, Y., Mitsukawa, N., Sugisaki, N., Miyamoto, N., Yanai, T., Kanehisa, H., Fukunaga, T. Does tendon elongation accurately reprewsent muscle force? some contradicting findings on human gastrocnemius and soleus muscle tendon units (symposium). 6th World Congress of Biomechanics, Singapore, 8/1-6, 2011.