Application of force-length curve for determination of leg stiffness during a vertical jump

• Autorzy: Struzik A. , Zawadzki J.

Identyfikatory

DOI

10.5277/ABB-00401-2015-02

• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this study was to present the methodology for estimation of a leg stiffness during a countermovement jump. The question was asked whether leg stiffness in the countermovement and take-off phases are similar to each other as demonstrated in previous reports. It was also examined whether the stiffness in left lower limb is similar to the one in right lower limb. Methods: The research was conducted on 35 basketball players. Each participant performed three countermovement jumps with arm swing to the maximum height. Measurements employed a Kistlerforce plate and a BTS SMART system for motion analysis. Leg stiffness (understood as an inclination of the curve of ground reaction forces vs. length) was computed for these parts of countermovement and take-off phases where its value was relatively constant and F(∆l) relationship was similar to linear. Results: Mean value (±SD) of total stiffness of both lower limbs in the countermovement phase was 7.1 ± 2.3 kN/m, whereas this value in the take-off phase was 7.5 ± 1 kN/m. No statistically significant differences were found between the leg stiffness in the countermovement and the take-off phases. No statistically significant differences were found during the comparison of the stiffness in the right and left lower limb. Conclusions: The calculation methodology allows us to estimate the value of leg stiffness based on the actual shape of F(∆l) curve rather than on extreme values of ∆F and ∆l. Despite different tasks of the countermovement and the take-off phases, leg stiffness in these phases is very similar. Leg stiffness during a single vertical jump maintains a relatively constant value in the parts with a small value of acceleration.

Słowa kluczowe

EN

asymmetry; countermovement jump; elasticity; quasi-stiffness; basketball players

PL

asymetria; sprężystość; kwazizerowa sztywność; koszykówka

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2016
• Tom: Vol. 18, no. 2
• Strony: 163--171
• Opis fizyczny: Bibliogr. 28 poz., tab., wykr.

Twórcy

autor

Struzik A.

• Department of Team Sport Games, University School of Physical Education, Wrocław, Poland

autor

Zawadzki J.

• Department of Biomechanics, University School of Physical Education, Wrocław, Poland

Bibliografia

• [1] ANDERSON F.C., PANDY M.G., Storage and utilization of elastic strain energy during jumping, J. Biomech, 1993, Vol. 26(12), 1413–1427.
• [2] ARAMPATZIS A., SCHADE F., WALSH M., BRÜGGEMANN G.-P., Influence of leg stiffness and its effect on myodynamic jumping performance, J. Electromyogr. Kines., 2001, Vol. 11(5), 355–364.
• [3] BLUM Y., LIPFERT S.W., SEYFARTH A., Effective leg stiffness in running, J. Biomech., 2009, Vol. 42(14), 2400–2405.
• [4] BRUGHELLI M., CRONIN J., A review of research on the mechanical stiffness in running and jumping: methodology and implications, Scand. J. Med. Sci. Spor., 2008, Vol. 18(4), 417–426.
• [5] CAVAGNA G.A., FRANZETTI P., HEGLUND N.C., WILLEMS P., The determinants of the step frequency in running, trotting and hopping in man and other vertebrates, J. Physiol., 1988, Vol. 399(1), 81–92.
• [6] DALLEAU G., BELLI A., VIALE F., LACOUR J.-R., BOURDIN M., A simple method for field measurements of leg stiffness in hopping, Int. J. Sports Med., 2004, Vol. 3(25), 170–176.
• [7] FARLEY C.T., BLICKHAN R., SAITO J., TAYLOR C.R., Hopping frequency in humans: a test of how springs set frequency in bouncing gaits, J. Appl. Physiol., 1991, Vol. 71(6), 2127– 2132.
• [8] FARLEY C.T., GONZÁLEZ O., Leg stiffness and stride frequency in human running, J. Biomech., 1996, Vol. 29(2), 181–186.
• [9] FARLEY C.T., HOUDIJK H.H.P., VAN STRIEN C., LOUIE M., Mechanism of leg stiffness adjustment for hopping on surfaces of different stiffnesses, J. Appl. Physiol., 1998, Vol. 85(3), 1044–1055.
• [10] FERRIS D.P., FARLEY C.T., Interaction of leg stiffness and surface stiffness during human hopping, J. Appl. Physiol., 1997, Vol. 82(1), 15–22.
• [11] GRANATA K.P., PADUA D.A., WILSON S.E., Gender differences in active musculoskeletal stiffness. Part II. Quantification of leg stiffness during functional hopping tasks, J. Electromyogr. Kines., 2002, Vol. 12(1), 127-135. [
• [12] HOBARA H., INOUE K., KANOSUE K., Effect of hopping frequency on bilateral differences in leg stiffness, J. Appl. Biomech., 2013, Vol. 29(1), 55–60.
• [13] HOBARA H., INOUE K., KOBAYASHI Y., OGATA T., A comparison of computation methods for leg stiffness during hopping, J. Appl. Biomech., 2014, Vol. 30(1), 154–159.
• [14] HUNTER I., A new approach to modeling vertical stiffness in heel-toe distance runners, J. Sport Sci. Med., 2003, Vol. 2(4), 139–143.
• [15] KOMI P.V., GOLLHOFER A., Stretch reflexes can have an important role in force enhancement during SSC exercise, J. Appl. Biomech., 1997, Vol. 13(4), 451–459.
• [16] KUITUNEN S., KYRÖLÄINEN H., AVELA J., KOMI P.V., Leg stiffness modulation during exhaustive stretch-shortening cycle exercise, Scand. J. Med. Sci. Spor., 2007, Vol. 17(1), 67–75.
• [17] LATASH M.L., ZATSIORSKY V.M., Joint stiffness: myth or reality? Hum. Movement Sci., 1993, Vol. 12(6), 653–692.
• [18] MORAN K.A., WALLACE E.S., Eccentric loading and range of knee joint motion effects on performance enhancement in vertical jumping, Hum. Movement Sci., 2007, Vol. 26(6), 824–840.
• [19] MRDAKOVIC V., ILIC D., VULOVIC R., MATIC M., JANKOVIC N., FILIPOVIC N., Leg stiffness adjustment during hopping at different intensities and frequencies, Acta Bioeng. Biomech., 2014, Vol. 16(3), 69–76.
• [20] PRUYN E.C., WATSFORD M.L., MURPHY A.J., PINE M.J., SPURRS R.W., CAMERON M.L., JOHNSTON R.J., Relationship between leg stiffness and lower body injuries in professional Australian football, J. Sport Sci., 2012, Vol. 30(1), 71–78.
• [21] RABITA G., COUTURIER A., LAMBERTZ D., Influence of training background on the relationships between plantarflexor intrinsic stiffness and overall musculoskeletal stiffness during hopping, Eur. J. Appl. Physiol., 2008, Vol. 103(2), 163–171.
• [22] SCHILTZ M., LEHANCE C., MAQUET D., BURY T., CRIELAARD J.-M., CROISIER J.-L., Explosive strength imbalances in professional basketball players, J. Athl. Training, 2009, Vol. 44(1), 39–47.
• [23] SERPELL B.G., BALL N.B., SCARVELL J.M., SMITH P.N., A review of models of vertical, leg, and knee stiffness in adults for running, jumping or hopping tasks, J. Sport Sci., 2012, Vol. 30(13), 1347–1363.
• [24] STRUZIK A., ZAWADZKI J., Leg stiffness during phases of countermovement and take-off in vertical jump, Acta Bioeng. Biomech., 2013, Vol. 15(2), 113–118.
• [25] WANG L.-I. The kinetics and stiffness characteristics of the lower extremity in older adults during vertical jumping, J. Sport Sci. Med., 2008, Vol. 7(3), 379–386.
• [26] ZATSIORSKY V.M., On muscle and joint viscosity, Motor Control, 1997, Vol. 1(4), 299–309.
• [27] ZAWADZKI J., Cyclic movements as a form of mechanical resonance in the human musculoskeletal system, [in:] T. Bober, A. Siemieński (eds.) Contemporary biomechanics: selected topics, International Congress of the Polish Society of Biomechanics “Biomechanics ’08” Wrocław, Wydawnictwo AWF, Wrocław, 2008, 66–79.
• [28] ZAWADZKI J., SIEMIEŃSKI A., Maximal frequency, amplitude, kinetic energy and elbow joint stiffness in cyclic movements, Acta Bioeng. Biomech., 2010, Vol. 12(2), 55–64

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.