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Analysis on Biomechanical Differences in Lower Limbs Caused by Increasing Heart Rates During Drop-landing
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 Title & Authors
Analysis on Biomechanical Differences in Lower Limbs Caused by Increasing Heart Rates During Drop-landing
Hong, Wan-Ki; Kim, Do-Eun;
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Objective : This study aimed to understand how increased heart rates at the time of drop landing during a step test would affect biomechanical variables of the lower extremity limbs. Background : Ballet performers do more than 200 landings in a daily training. This training raises the heart rate and the fatigability of the lower extremity limbs. Ballet performance high heart rate can trigger lower extremity limb injury. Method : We instructed eight female ballet dancers with no instability in their ankle joints(mean SD: age, ; body mass index, , career duration, ) to perform the drop landing under the following conditions: rest, 60% heart rate reserve (HRR) and 80% HRR. Results : First, the study confirmed that the increased heart rates of the female ballet dancers did not affect the working ranges of the knee joints during drop landing but only increased angular speeds, which was considered a negative shock-absorption strategy. Second, 80% HRR, which was increased through the step tests, led to severe fatigue among the female ballet dancers, which made them unable to perform a lower extremity limb-neutral position. Hence, their drop landing was unstable, with increased introversion and extroversion moments. Third, we observed that the increasing 80% HRR failed to help the dancers effectively control ground reaction forces but improved the muscular activities of the rectus femoris and vastus medialis oblique muscles. Fourth, the increasing heart rates were positively related to the muscular activities of the vastus medialis oblique and rectus femoris muscles, and the extroversion and introversion moments. Conclusion/Application : Our results prove that increased HRR during a step test negatively affects the biomechanical variables of the lower extremity limbs at the time of drop landing.
drop landing;heart rate;kinetic analysis;EMG;Ballet;
 Cited by
Abdel-Aziz, Y. L., & Karara, H. M. (1971). Direct Linear Transformation From Comparator Coordinates in Object-Space Coordinates in Close-Range Photogrammetry. Proceedings of the ASP Symposium of Close-Range Photogrammetry. Urbana, IL.

Benjaminse, A., Habu, A., Sell, T. C., Abt, J. P., Fu, F. H., Myers, J. B., & Lephart, S. M. (2008). Fatigue alters lower extremity kinematics during a single-leg stop-jump task. Knee Surgery Sports Traumatoogyl Arthroscopy, 16, 400-407. crossref(new window)

Chappell, J. D., Creighton, A. R., Giuliani, C., Yu, B., & Garrett, W. E. (2007). Kinematics and electromyography of landing preparation in vertical stop-jump risks for noncontact anterior cruciate ligament injury. The American Journal of Sports Medicine, 35(2). 235-241. crossref(new window)

Cram, J. R., Kasman, G. S., & Holtz, J. (1998). Introduction the Surface Electromyography, 2nd ed. An Aspen Publication.

Decker, M. J., Torry, M. R., Wyland, D. J., Sterett, W. I., & Richard Steadman, J. (2003). Gender differences in lower extremity kinematics, kinetics and energy absorption during landing. Clinical Biomechanics, 18(7), 662-669. crossref(new window)

Dufek, J. S., & Bates, B. T. (1990). The evaluation and prediction of impact forces during landings. Medicine and Science in Sports and Exercise, 22(3), 370-377.

Ford, K. R,. Myer, G. D., & Hewett, T. E. (2003). Valgus knee motion during landing in high school female and male basketball players. Medicine Science and Sports in Exercise, 35(10), 1745-1750. crossref(new window)

Fox, E. L. (1984). Sports Physiology. New York, Saunders college publishing.

Han, G. H., & Lim, B. O. (2009). Mechanism and risk factors of anterior cruciate ligament injuries in female athletes. The Official Journal of the Korean Association of Certifies Exercise Professionals, 11(3), 61-83.

James, C. R., Dufek, J. S., & Bates, B. T. (2000). Effects of injury proneness and task difficulty on joint kinetic variability. Medicine and Science in Sports and Exercise, 32(11), 1833-1844. crossref(new window)

Kellis, E., & Kouvelioti, V. (2009). Agonist versus antagonist muscle fatigue effects on high muscle activity and vertical ground reaction during drop landing. Journal of Electromyography and Kinesiology, 19, 55-64. crossref(new window)

Kim, K, H. (2007). Effects of Balance Training in the Soccer Player During Drop Landing. Unpublished Doctoral Dissertation, Graduate School of Yonsei University.

Kim, T. H., & Youm, C, H. (2013). Effects of knee joint muscle Fatigue and overweight on the angular displacement and moment of the lower limb joints during landing. Korean Journal of Sport Biomechanics, 23(1), 063-076. crossref(new window)

Konrad, P. (2005). The ABC of EMG. Noraxon: Scottsdale

Kovacs, I., Tihanyi, J., Devita, P., Racz, L., Barrier, J., & Hortobagyi, T. (1999). Foot placement modifies kinematics and kinetics during drop jumping. Medicine and Science in Sports and Exercise, 31, 708-716. crossref(new window)

Lee, K. Y., & Hong, W. G. (2014). Analysis of kinetic difference according to ankle taping types in drop landing. Korean Journal of Sport Biomechanics, 24(1), 51-57. crossref(new window)

Li, G., Rudy, T. W., & Sakane, M. (1999). The importance quadriceps and hamstring muscle loading on knee kinematics and in-situ force in the ACL. Journal of Biomechanics, 32, 395-400. crossref(new window)

Lim, B. O. (2007). The effects of knee brace on the knee extensor and valgus moment during the rebound in female highschool basketball player. The Korean Journal of Physical Education, 46(4), 509-514.

Lim, J. M. (2014). Exercise intensity of energy cost of a ballet dance exercise I female collegiate with different technical ability. Dance Reserch Journal of Korea, 72, 175-195.

McNitt-Gray, J. (1991). Kinematics and impulse characteristics of drop landings from three heights. International Journal of Sport Biomechanics, 7, 201-224. crossref(new window)

Olney, S. J., & Richards, C. (1996). Hemiparetic gait following stroke. Part I: Characteristics, Gait & Posture, 4(2), 136-148. crossref(new window)

Orishimo, K. F., Kremenic, I. J., Pappas, E., Hagins, M., & Liederbach, M. (2009). Comparison of Landing Biomechanics Between Male and Female Professional Dancers. The American Journal of Sports Medicine, 37(11). 2187-2193. crossref(new window)

Padua, D. A., Arnold, B. L., Perrin, D. H., Gansneder, B. M., Carcia, C. R., & Granata, K. P. (2006). Fatigue, vertical leg stiffness, and stiffness control strategies in males and females. Journal of Athletic Training, 41(3), 294-304.

Plagenhoef, S., Gaynor, E., & Abdelnour, T. (1983). Anatomical data for analysis human motion. Research Quarterly for Exercise and Sports, 54(2), 169-178. crossref(new window)

Scott, M., Cheryl M. F., Bryan L. R., Joseph, B. M., & Freddie, H. F. (2002). Gender differences in strength and lower extremity kinematics during landing. Clinical Orthopaedics & Related Research, 401, 162-169. crossref(new window)

Tylkowski, C. M., Simon, S. R., & Mansour, J. M. (1982). Internal rotation gait in spastic cerebral palsy in the hip. In Nelson, J.P. (Ed.), Proceedings of the 10th Open Scientific Meeting of the Hip Society, 89-125.

Yang, C. S., & Lim, B. O. (2014). Effects of knee brace on the anterior cruciate ligament injury risk factors during spike take off in female volleyball players. Korean Journal of Sport Biomechanics, 24(1), 27-33. crossref(new window)