The effect of load centralization on squat jump performance: Implications for force-velocity-power profiling
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The effect of load centralization on squat jump performance: Implications for force-velocity-power profiling. / Junge, Nicklas; Nybo, Lars.
I: Gazzetta Medica Italiana Archivio per le Scienze Mediche, Bind 182, Nr. 1-2, 2023, s. 23-31.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The effect of load centralization on squat jump performance: Implications for force-velocity-power profiling
AU - Junge, Nicklas
AU - Nybo, Lars
N1 - Publisher Copyright: © 2023 EDIZIONI MINERVA MEDICA.
PY - 2023
Y1 - 2023
N2 - Background: Force-velocity-power (FVP) profiling may aid in performance optimization through identification of the individual force-velocity (F-v) profile. However, the prevailing methodology of load application via an Olympic barbell (OLB) has been hypothesized to influence jump performance and biomechanics more so than a centralized loading approach. Methods: Therefore, to examine the effect of load centralization for FVP profiling, 26 subjects (24±6 years, 76±11 kg, 183±6 cm) underwent FVP profiling with both the OLB-loading approach and a centralized loading methodology through a weighted vest (WV). Subsequently, 7 subjects underwent FVP profiling with the standard WV and a WV modified to resemble the load distribution of the OLB (WVPER). Results: Compared to the OLB, load centralization through the WV increased the force-velocity relationship slope by 21% (P=0.02) and augmented maximal theoretical force and F-v profile by 8 and 16% (P=0.01-0.03). Oppositely directed changes were observed when WV was compared to WVPER (20% decrease in F-v slope and F-v profile reduced by 21% (P=0.03). Conclusions: In conclusion, the positioning of external load appears of importance for jumping ability and thus FVP profiling, with a potential advantage to adopting a centralized loading methodology.
AB - Background: Force-velocity-power (FVP) profiling may aid in performance optimization through identification of the individual force-velocity (F-v) profile. However, the prevailing methodology of load application via an Olympic barbell (OLB) has been hypothesized to influence jump performance and biomechanics more so than a centralized loading approach. Methods: Therefore, to examine the effect of load centralization for FVP profiling, 26 subjects (24±6 years, 76±11 kg, 183±6 cm) underwent FVP profiling with both the OLB-loading approach and a centralized loading methodology through a weighted vest (WV). Subsequently, 7 subjects underwent FVP profiling with the standard WV and a WV modified to resemble the load distribution of the OLB (WVPER). Results: Compared to the OLB, load centralization through the WV increased the force-velocity relationship slope by 21% (P=0.02) and augmented maximal theoretical force and F-v profile by 8 and 16% (P=0.01-0.03). Oppositely directed changes were observed when WV was compared to WVPER (20% decrease in F-v slope and F-v profile reduced by 21% (P=0.03). Conclusions: In conclusion, the positioning of external load appears of importance for jumping ability and thus FVP profiling, with a potential advantage to adopting a centralized loading methodology.
KW - Biomechanical phenomena
KW - Exercise
KW - Sports
U2 - 10.23736/S0393-3660.22.04875-6
DO - 10.23736/S0393-3660.22.04875-6
M3 - Journal article
AN - SCOPUS:85153110903
VL - 182
SP - 23
EP - 31
JO - Gazzetta Medica Italiana Archivio per le Scienze Mediche
JF - Gazzetta Medica Italiana Archivio per le Scienze Mediche
SN - 0393-3660
IS - 1-2
ER -
ID: 345370483