PMID- 37815246
OWN - NLM
STAT- MEDLINE
DCOM- 20231129
LR  - 20231129
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 37
IP  - 12
DP  - 2023 Dec 1
TI  - Dynamic and Isometric Force-Time Curve Characteristics Influencing Change of 
      Direction Performance of State-Level Netball Players.
PG  - 2397-2404
LID - 10.1519/JSC.0000000000004616 [doi]
AB  - Smolarek, T, Haff, GG, Poon, WCK, Nagatani, T, Barley, OR, and Guppy, SN. Dynamic 
      and isometric force-time curve characteristics influencing change of direction 
      performance of state-level netball players. J Strength Cond Res 37(12): 
      2397-2404, 2023-Although multiple lower-body strength capacities are required to 
      change direction rapidly, there is limited knowledge about the relative 
      importance of these factors. Therefore, the purpose of this study was to assess 
      the relationship between dynamic and isometric lower-body strength capacities and 
      change of direction (COD) time in state-league netball players. Seventeen female 
      athletes completed maximal isometric midthigh pull (IMTP), countermovement jump 
      (CMJ), and modified 5-0-5 COD tests. Pearson's product moment correlations were 
      used to determine the relationship between COD time and several IMTP and CMJ 
      force-time curve characteristics. To assess the level of contribution of each 
      force-time curve characteristic to COD time, multivariate-linear stepwise 
      regression analyses were performed. A significant moderate correlation was noted 
      between net relative peak force (PF) during the IMTP and COD time ( r = 0.488, p 
      = 0.047), accounting for 23.8% of the variance in COD time. Moreover, concentric 
      relative impulse during the CMJ was strongly correlated with COD time ( r = 
      0.718; p = 0.001), explaining 81.9% of the variance in COD time when combined 
      with net relative braking PF in a stepwise regression. Based on these findings, 
      female netball players who display higher concentric and isometric strength, as 
      well as the ability to express higher impulses during the concentric phase of the 
      CMJ, are likely to perform CODs faster. This may occur because COD requires the 
      generation of greater propulsive forces, as well as reduced braking and contact 
      times, along with greater isometric strength enabling effective repositioning of 
      center of mass during COD tasks.
CI  - Copyright (c) 2023 National Strength and Conditioning Association.
FAU - Smolarek, Tinka
AU  - Smolarek T
AD  - Institute of Sport and Exercise Sciences, University of Munster, Munster, 
      Germany.
FAU - Haff, G Gregory
AU  - Haff GG
AD  - School of Medical and Health Sciences, Edith Cowan University, Joondalup, 
      Australia; and.
AD  - Directorate of Psychology and Sport, University of Salford, Salford, United 
      Kingdom.
FAU - Poon, Wayne C K
AU  - Poon WCK
AD  - School of Medical and Health Sciences, Edith Cowan University, Joondalup, 
      Australia; and.
FAU - Nagatani, Tsuyoshi
AU  - Nagatani T
AD  - School of Medical and Health Sciences, Edith Cowan University, Joondalup, 
      Australia; and.
FAU - Barley, Oliver R
AU  - Barley OR
AD  - School of Medical and Health Sciences, Edith Cowan University, Joondalup, 
      Australia; and.
FAU - Guppy, Stuart N
AU  - Guppy SN
AUID- ORCID: 0000-0001-9209-7409
AD  - School of Medical and Health Sciences, Edith Cowan University, Joondalup, 
      Australia; and.
LA  - eng
PT  - Journal Article
DEP - 20231006
PL  - United States
TA  - J Strength Cond Res
JT  - Journal of strength and conditioning research
JID - 9415084
SB  - IM
MH  - Humans
MH  - Female
MH  - *Basketball
MH  - Isometric Contraction
MH  - Muscle Strength
MH  - Muscle, Skeletal
MH  - Exercise Test
MH  - *Athletic Performance
EDAT- 2023/10/10 12:42
MHDA- 2023/11/29 06:43
CRDT- 2023/10/10 08:33
PHST- 2023/11/29 06:43 [medline]
PHST- 2023/10/10 12:42 [pubmed]
PHST- 2023/10/10 08:33 [entrez]
AID - 00124278-990000000-00310 [pii]
AID - 10.1519/JSC.0000000000004616 [doi]
PST - ppublish
SO  - J Strength Cond Res. 2023 Dec 1;37(12):2397-2404. doi: 
      10.1519/JSC.0000000000004616. Epub 2023 Oct 6.