PMID- 37304819
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230613
IS  - 1664-042X (Print)
IS  - 1664-042X (Electronic)
IS  - 1664-042X (Linking)
VI  - 14
DP  - 2023
TI  - Investigating the impact of inter-limb asymmetry in hamstring strength on jump, 
      sprint, and strength performance in young athletes: comparing the role of gross 
      force.
PG  - 1185397
LID - 10.3389/fphys.2023.1185397 [doi]
LID - 1185397
AB  - The main purpose of this cross-sectional study was to examine the impact of the 
      inter-limb asymmetry of hamstring strength on jump, sprint and strength 
      performance and to compare the effects of inter-limb asymmetry of hamstring 
      strength with gross force (GF) of the hamstring on these physical qualities in 
      youth volleyball athletes. Eighty-one youth volleyball players (age: 16.6 +/- 
      1.9 years; training experience: 3.0 +/- 0.9 years; height: 191.4 +/- 7.1 cm; body 
      mass: 78.5 +/- 12.9 kg; lean body mass: 63.5 +/- 10.5 kg; body fat rate: 18.6% +/- 
      6.1%) performed a mid-season battery of tests consisting of morphological test, 
      depth jump (DJ), counter movement jump (CMJ), squat jump (SJ), 10 m sprint, 
      isometric mid-thigh pull (IMTP) and hamstring strength test. All tests reported 
      good to excellent reliability (ICC range = 0.815-0.996) and acceptable 
      variability (CV range = 3.26-7.84%). Results show a significant negative 
      relationship between inter-limb asymmetry of hamstring strength and all physical 
      qualities (r = -0.271 to -0.445; p < 0.05), and a significant positive 
      relationship between GF of hamstring and all physical qualities (r = 0.303 to 
      0.664; p < 0.05). Additionally, GF of hamstring was more relevant to IMTP-PF 
      (peak force) (r = 0.664) and inter-limb asymmetry of hamstring strength was more 
      relevant to 10 m sprint (r = -0.445). The findings from this study indicate that, 
      for youth athletes, the GF of the hamstring is crucial for overall lower limb 
      strength performance, and the importance of inter-limb symmetry of hamstring 
      strength increases with the complexity of the task.
CI  - Copyright (c) 2023 Jiang, Liu, Ling, Dai, Long, Lu and Zhou.
FAU - Jiang, Dongting
AU  - Jiang D
AD  - Sports Coaching College, Beijing Sports University, Beijing, China.
FAU - Liu, Zijian
AU  - Liu Z
AD  - Physical Education College, China University of Geosciences, Wuhan, China.
FAU - Ling, Xiaoyu
AU  - Ling X
AD  - School of Sports Medicine and Rehabilitation, Beijing Sports University, Beijing, 
      China.
FAU - Dai, Jinjin
AU  - Dai J
AD  - Sports Coaching College, Beijing Sports University, Beijing, China.
FAU - Long, Lijun
AU  - Long L
AD  - Sports Coaching College, Beijing Sports University, Beijing, China.
AD  - College of Physical Education, Hunan Normal University, Changsha, China.
FAU - Lu, Yongren
AU  - Lu Y
AD  - Youth Competitive Sports School, Guangdong Provincial Sports Bureau, Guangzhou, 
      China.
FAU - Zhou, Shengqing
AU  - Zhou S
AD  - School of Physical Education and Health, Guangxi Normal University, Guilin, 
      China.
LA  - eng
PT  - Journal Article
DEP - 20230525
PL  - Switzerland
TA  - Front Physiol
JT  - Frontiers in physiology
JID - 101549006
PMC - PMC10248013
OTO - NOTNLM
OT  - asymmetry
OT  - hamstring
OT  - kinetics
OT  - performance
OT  - youth athletes
COIS- The authors declare that the research was conducted in the absence of any 
      commercial or financial relationships that could be construed as a potential 
      conflict of interest.
EDAT- 2023/06/12 06:43
MHDA- 2023/06/12 06:44
PMCR- 2023/05/25
CRDT- 2023/06/12 04:14
PHST- 2023/03/13 00:00 [received]
PHST- 2023/05/16 00:00 [accepted]
PHST- 2023/06/12 06:44 [medline]
PHST- 2023/06/12 06:43 [pubmed]
PHST- 2023/06/12 04:14 [entrez]
PHST- 2023/05/25 00:00 [pmc-release]
AID - 1185397 [pii]
AID - 10.3389/fphys.2023.1185397 [doi]
PST - epublish
SO  - Front Physiol. 2023 May 25;14:1185397. doi: 10.3389/fphys.2023.1185397. 
      eCollection 2023.