PMID- 24149687
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20131023
LR  - 20211021
IS  - 1303-2968 (Print)
IS  - 1303-2968 (Electronic)
IS  - 1303-2968 (Linking)
VI  - 9
IP  - 2
DP  - 2010
TI  - The acute effects of back squats on vertical jump performance in men and women.
PG  - 206-13
AB  - The aim of the present study was to investigate the acute effects of performing 
      back squats on subsequent performance during a series of vertical jumps in men 
      and women. Twelve men and 12 women were tested on three separate occasions, the 
      first of which was used to determine their 1-repetition maximum (1-RM) parallel 
      back squat. Following this, subjects performed a potentiation and a control 
      treatment in a counterbalanced order. The potentiation treatment culminated with 
      subjects performing parallel back squats with a load equivalent to 70% 1- RM for 
      three repetitions, following which they performed one countermovement vertical 
      jump (CMJ) for maximal height every three minutes for a total of 10 jumps. During 
      the control treatment, subjects performed only the CMJs. Jump height (JH) and 
      vertical stiffness (VStiff) were calculated for each jump from the vertical force 
      signal recorded from a force platform. There were no significant changes in JH or 
      VStiff following the treatments and no significant differences in the responses 
      between men and women (p > 0.05). Correlations between normalized 1-RM back squat 
      load and the absolute change in JH and VStiff were small to moderate for both men 
      and women, with most correlations being negative. Large variations in response to 
      the back squats were noted in both men and women. The use of resistance exercises 
      performed prior to a series of vertical jumps can result in improvements in 
      performance in certain individuals, although the gains tend to be small and 
      dependent upon the mechanical variable measured. There does not seem to be any 
      differences between men and women in the response to dynamic potentiation 
      protocols. Key pointsSubstantial individual responses were noted in both men and 
      women in response to the PAP protocol used in the present study.The choice of 
      dependent variable influences the ef-ficacy of the PAP protocol, with JH and 
      VStiff demonstrating disparate responses in individual sub-jects.Such individual 
      responses may render such PAP protocols impractical for strength and conditioning 
      practitioners as the protocols are likely to require in-dividualizing to each 
      athlete.
FAU - Witmer, Chad A
AU  - Witmer CA
AD  - Exercise Science Department, East Stroudsburg University of Pennsylvania , USA.
FAU - Davis, Shala E
AU  - Davis SE
FAU - Moir, Gavin L
AU  - Moir GL
LA  - eng
PT  - Journal Article
DEP - 20100601
PL  - Turkey
TA  - J Sports Sci Med
JT  - Journal of sports science & medicine
JID - 101174629
PMC - PMC3761744
OTO - NOTNLM
OT  - Back squats
OT  - potentiation
OT  - vertical jump
OT  - vertical stiffness
EDAT- 2010/01/01 00:00
MHDA- 2010/01/01 00:01
PMCR- 2010/06/01
CRDT- 2013/10/24 06:00
PHST- 2009/11/10 00:00 [received]
PHST- 2010/02/24 00:00 [accepted]
PHST- 2013/10/24 06:00 [entrez]
PHST- 2010/01/01 00:00 [pubmed]
PHST- 2010/01/01 00:01 [medline]
PHST- 2010/06/01 00:00 [pmc-release]
AID - jssm-09-206 [pii]
PST - epublish
SO  - J Sports Sci Med. 2010 Jun 1;9(2):206-13. eCollection 2010.