PMID- 33105378
OWN - NLM
STAT- MEDLINE
DCOM- 20210309
LR  - 20230912
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 34
IP  - 11
DP  - 2020 Nov
TI  - Angle-Specific Isokinetic Metrics Highlight Strength Training Needs of Elite 
      Youth Soccer Players.
PG  - 3258-3265
LID - 10.1519/JSC.0000000000002612 [doi]
AB  - Eustace, SJ, Page, RM, and Greig, M. angle specific isokinetic metrics highlight 
      strength training needs of elite youth soccer players. J Strength Cond Res 
      34(11): 3258-3265, 2020-The purpose of this study was to assess traditional and 
      angle-specific isokinetic strength of eccentric knee flexors (eccKFs) and 
      concentric knee extensors (conKEs) between senior professional and youth soccer 
      players. Thirty-four male soccer players (17 senior and 17 youth) were recruited 
      for bilateral assessments at 180, 270, and 60 degrees .s. Peak torque (PT), dynamic 
      control ratio (DCR), angle of peak torque (APT), functional range (FR), 
      angle-specific torque (AST), and angle-specific DCR (DCRAST) were compared. The 
      eccentric knee flexor (eccKF) and conKE PT (p = 0.782) and DCR (p = 0.508) were 
      not different between groups across all angular velocities. Significant 
      differences were identified for eccKF APT (p = 0.018) and FR (p = 0.006), DCRAST 
      at 270 degrees .s (p = 0.031), and in AST data recorded across angular velocities for 
      eccKF and conKE (p = 0.003). Traditional strength measures were not sensitive to 
      playing age, with implications for misinterpretation in training prescription. By 
      contrast, AST data did differentiate between ages. Strength deficits that 
      highlight the muscle contraction type, angular velocity, and joint angle can be 
      manipulated within an individualized training intervention. Given the relevance 
      to injury etiology, this study highlights potential implications for improved 
      assessment strategies to inform training prescription for performance and injury 
      prevention. Given the high number of injuries in adolescent soccer players, and 
      in line with previous recommendations, practitioners should consider using more 
      informed and specific strength and conditioning practices at younger ages.
FAU - Eustace, Steven J
AU  - Eustace SJ
AD  - Department of Sport and Physical Activity, Sports Injury Research Group, Edge 
      Hill University, Ormskirk, United Kingdom.
FAU - Page, Richard M
AU  - Page RM
FAU - Greig, Matt
AU  - Greig M
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Strength Cond Res
JT  - Journal of strength and conditioning research
JID - 9415084
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Hamstring Muscles/*physiology
MH  - Humans
MH  - Knee Joint/physiology
MH  - Male
MH  - Muscle Contraction
MH  - Muscle Strength
MH  - Quadriceps Muscle/*physiology
MH  - Range of Motion, Articular
MH  - *Resistance Training
MH  - Soccer/*physiology
MH  - Torque
MH  - Young Adult
EDAT- 2020/10/27 06:00
MHDA- 2021/03/10 06:00
CRDT- 2020/10/26 20:17
PHST- 2020/10/26 20:17 [entrez]
PHST- 2020/10/27 06:00 [pubmed]
PHST- 2021/03/10 06:00 [medline]
AID - 00124278-202011000-00030 [pii]
AID - 10.1519/JSC.0000000000002612 [doi]
PST - ppublish
SO  - J Strength Cond Res. 2020 Nov;34(11):3258-3265. doi: 
      10.1519/JSC.0000000000002612.