PMID- 30102119
OWN - NLM
STAT- MEDLINE
DCOM- 20200727
LR  - 20200727
IS  - 1752-6116 (Electronic)
IS  - 1476-3141 (Linking)
VI  - 19
IP  - 4
DP  - 2020 Aug
TI  - Scaling isometric mid-thigh pull maximum strength in division I Athletes: are we 
      meeting the assumptions?
PG  - 532-546
LID - 10.1080/14763141.2018.1498910 [doi]
AB  - This study examined the validity of various scaling methods, isometric mid-thigh 
      pull (IMTP) peak force using various scaling methods, and the relationships 
      between IMTP peak force and countermovement jump height.  Fifty-one collegiate 
      baseball and soccer athletes performed two maximal IMTPs.  Absolute peak force 
      was compared between teams and when data were scaled using ratio (RS), 
      traditional allometric (ALLO(Trad)), and fitted allometric (ALLO(Fit)) scaling.  
      ALLO(Trad) and ALLO(Fit) validity was violated because different derived 
      exponents existed for baseball (b = 0.20) and soccer (b = 1.20).  Soccer athletes 
      produced greater RS peak force compared to baseball (p = 0.012), while no 
      difference existed with absolute, ALLO(Trad) or ALLO(Fit) (all p > 0.05) peak 
      force.  Moderate relationships existed between body mass and absolute (r = 0.402, 
      p = 0.003) and RS (r = -0.328, p = 0.019) peak force, while trivial relationships 
      existed with ALLO(Trad) and ALLO(Fit) (both r < -0.10, p > 0.05).  Trivial 
      relationships existed between countermovement jump height and absolute, RS, 
      ALLO(Trad), and ALLO(Fit) (all r < 0.20, p > 0.05) peak force.  The current 
      dataset violated allometric scaling assumptions, making it inappropriate to use 
      ALLO(Trad) and ALLO(Fit) scaling.  Practitioners must understand the assumptions, 
      limitations, and purpose of scaling methods.
FAU - Suchomel, Timothy J
AU  - Suchomel TJ
AD  - Department of Human Movement Sciences, Carroll University , Waukesha, WI, USA.
FAU - Nimphius, Sophia
AU  - Nimphius S
AD  - Centre for Exercise and Sports Science Research, School of Medical and Health 
      Sciences, Edith Cowan University , Joondalup, Australia.
FAU - Stone, Michael H
AU  - Stone MH
AD  - Department of Exercise and Sport Sciences, East Tennessee State University , 
      Johnson City, TN, USA.
LA  - eng
PT  - Journal Article
PT  - Validation Study
DEP - 20180813
PL  - England
TA  - Sports Biomech
JT  - Sports biomechanics
JID - 101151352
SB  - IM
MH  - Adolescent
MH  - Baseball/*physiology
MH  - Biomechanical Phenomena
MH  - *Body Mass Index
MH  - Cross-Sectional Studies
MH  - Exercise Test/*methods
MH  - Humans
MH  - Isometric Contraction/physiology
MH  - Muscle Strength/*physiology
MH  - Muscle, Skeletal/physiology
MH  - Plyometric Exercise
MH  - Reproducibility of Results
MH  - Soccer/*physiology
MH  - Thigh/*physiology
MH  - Young Adult
OTO - NOTNLM
OT  - Ratio scaling
OT  - allometric scaling
OT  - athletic performance
OT  - countermovement jump
OT  - isometric strength
EDAT- 2018/08/14 06:00
MHDA- 2020/07/28 06:00
CRDT- 2018/08/14 06:00
PHST- 2018/08/14 06:00 [pubmed]
PHST- 2020/07/28 06:00 [medline]
PHST- 2018/08/14 06:00 [entrez]
AID - 10.1080/14763141.2018.1498910 [doi]
PST - ppublish
SO  - Sports Biomech. 2020 Aug;19(4):532-546. doi: 10.1080/14763141.2018.1498910. Epub 
      2018 Aug 13.