University of Kansas, Jayhawk Athletic Performance Laboratory—Wu Tsai Human Performance Alliance, Department of Health, Sport and Exercise Sciences
Lawrence, Kansas, USA
Oklahoma State University, School of Kinesiology, Applied Health and Recreation
Stillwater, OK, USA
Fountain-Fort Carson School District 8
Colorado Springs, CO, USA
Concordia University-Chicago
Chicago, Illinois, USA
Correspondence email: quincy.johnson@ku.edu
Abstract
Lacrosse players are required to perform multiple sprints and changes of direction over the course of a game. These skills are reliant on the ability to rapidly produce lower-body force to be successful. Currently, little research examining the relationship between specific performance indicators and relative strength within this population exists. The purpose of this study was to investigate relationships between measures of lower-body strength and power to sprinting and change of direction speed (CODS) among male lacrosse players. Archived data for (n= 18) NCAA Division II male lacrosse athletes were used for this analysis. Lower-body strength was assessed using a one-repetition maximum back squat. Power was assessed using a countermovement jump (CMJ), squat jump (SJ), and standing long jump (SLJ). Sprint speed at 10 and 30 yds (i.e., 9.14 and 27.43 m) and CODS (i.e., T-Test (TT) and modified T-Test (MTT) were also assessed. Pearson’s correlation was used to determine relationships between lower-body strength and power to sprint speed and CODS. Significant relationships (r = -0.51 - -0.64, p ≤ 0.05) were discovered between all measures of power and CODS, as well as SLJ and sprint speed (r = -0.51; p = 0.05 and -0.67; p ≤-0.01, respectively). No significant relationships between relative strength and any measures of sprint speed or CODS were discovered. Although relative strength was not directly related to sprint speed or CODS performance, it may indirectly affect these measures based on its relationship to power, and power’s relationship to sprint and CODS performance.
Keywords: Strength and conditioning, Performance optimization, Field sports, Maximum power, Linear speed, Agility
Apstrakt
Povezanost između relativne snage, ekspolozivnosti i brzine kod igrača Lakrosa druge NCAA divizije
Igrači lakrosa moraju da izvode višestruke sprinteve i promjene pravca kretanja tokom igre. Za uspješno izvođenje ovih aktivnosti važna je sposobnost brzog razvoja sile donjih ekstremiteta. Trenutno, postoji malo istraživanja koja ispituju odnos između specifičnih pokazatelja performansi i relativne jakosti unutar ove populacije. Svrha ovog istraživanja bila je da se ispitaju odnosi između parametara jakosti i snage donjih ekstremiteta sa brzinom trčanja i brzinom promjene pravca kretanja (CODS) među muškim igračima lakrosa. Za potrebe analize korišćeni su podaci (n=18) igrača muškog lakros tima NCAA Divizije II. Jakost donjih ekstremiteta procijenjena je korišćenjem jednog maksimalnog ponavljanja u zadnjem čučnju. Snaga je procijenjena korišćenjem skoka sa pripremom (CMJ), skoka sa zadrškom (SJ) i skoka u dalj (SLJ). Takođe je mjerena brzina trčanja na 10 i 30 jardi (tj. 9,14 i 27,43 m) i brzina promjene pravca kretanja (T-Test (TT) i modifikovani T-Test (MTT)). Pirsonova korelacija korišćena je kako bi se utvrdila povezanost između jakosti i snage donjih ekstremiteta sa brzinom trčanja i brzinom promjene pravca kretanja. Utvrđena je značajna povezanost (r = -0.51 - -0.64, p ≤ 0.05) između svih varijabli snage i brzine promjene pravca kretanja, kao i SLJ i brzine trčanja (r = -0.51; p = 0.05 i -0.67; p ≤ -0.01, redom). Nije utvrđena značajna povezanost između relativne jakosti i bilo koje mjere brzine trčanja ili brzine promjene pravca kretanja. Iako relativna jakost nije direktno povezana sa brzinom sprinta ili sposobnostima promjene pravca kretanja, ona može indirektno uticati na ove sposobnosti na osnovu svog odnosa sa snagom, i odnosa snage sa brzinom sprinta i promjenom pravca kretanja.
Ključne reči: Snaga i idržljivost, optimizacija perforamnse, maksimalna snaga, linearana brzina, agilnost.
Napomena: cijeli članak je dostupan samo na engleskom jeziku.
