PMID- 29309389
OWN - NLM
STAT- MEDLINE
DCOM- 20190514
LR  - 20190514
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 33
IP  - 4
DP  - 2019 Apr
TI  - Acute Effects of Back Squats on Countermovement Jump Performance Across Multiple 
      Sets of a Contrast Training Protocol in Resistance-Trained Men.
PG  - 995-1000
LID - 10.1519/JSC.0000000000002422 [doi]
AB  - Bauer, P, Sansone, P, Mitter, B, Makivic, B, Seitz, LB, and Tschan, H. Acute 
      effects of back squats on countermovement jump performance across multiple sets 
      of a contrast training protocol in resistance-trained men. J Strength Cond Res 
      33(4): 995-1000, 2019-This study was designed to evaluate the voluntary 
      postactivation potentiation (PAP) effects of moderate-intensity (MI) or 
      high-intensity (HI) back squat exercises on countermovement jump (CMJ) 
      performance across multiple sets of a contrast training protocol. Sixty 
      resistance-trained male subjects (age, 23.3 +/- 3.3 years; body mass, 86.0 +/- 13.9 
      kg; and parallel back squat 1-repetition maximum [1-RM], 155.2 +/- 30.0 kg) 
      participated in a randomized, crossover study. After familiarization, the 
      subjects visited the laboratory on 3 separate occasions. They performed a 
      contrast PAP protocol comprising 3 sets of either MI (6 x 60% of 1-RM) or HI back 
      squats (4 x 90% of 1-RM) or 20 seconds of recovery (CTRL) alternated with 7 CMJs 
      that were performed at 15 seconds, and 1, 3, 5, 7, 9 and 11 minutes after the 
      back squats or recovery. Jump height and relative peak power output recorded with 
      a force platform during MI and HI conditions were compared with those recorded 
      during control condition to calculate the voluntary PAP effect. Countermovement 
      jump performance was decreased immediately after the squats but increased across 
      all 3 sets of MI and HI between 3 and 7 minutes after recovery. However, 
      voluntary PAP effects were small or trivial, and no difference between the 3 sets 
      could be found. These findings demonstrate that practitioners can use MI and HI 
      back squats to potentiate CMJs across a contrast training protocol, but a minimum 
      of 3 minutes of recovery after the squats is needed to benefit from voluntary 
      PAP.
FAU - Bauer, Pascal
AU  - Bauer P
AD  - Center for Sports Science and University Sports, University of Vienna, Vienna, 
      Austria.
FAU - Sansone, Pierpaolo
AU  - Sansone P
AD  - University of Rome "Foro Italico," Rome, Italy.
FAU - Mitter, Benedikt
AU  - Mitter B
AD  - Center for Sports Science and University Sports, University of Vienna, Vienna, 
      Austria.
FAU - Makivic, Bojan
AU  - Makivic B
AD  - University of Applied Science, St. Polten, Austria.
FAU - Seitz, Laurent B
AU  - Seitz LB
AD  - Center for Exercise and Sport Science Research, Edith Cowan University, 
      Joondalup, Australia.
FAU - Tschan, Harald
AU  - Tschan H
AD  - Center for Sports Science and University Sports, University of Vienna, Vienna, 
      Austria.
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  - Adult
MH  - Athletic Performance/*physiology
MH  - Cross-Over Studies
MH  - Exercise Test
MH  - Humans
MH  - Male
MH  - *Movement
MH  - *Muscle Strength
MH  - Muscle, Skeletal/*physiology
MH  - Random Allocation
MH  - Recovery of Function
MH  - Resistance Training/*methods
MH  - Time Factors
MH  - Young Adult
EDAT- 2018/01/09 06:00
MHDA- 2019/05/15 06:00
CRDT- 2018/01/09 06:00
PHST- 2018/01/09 06:00 [pubmed]
PHST- 2019/05/15 06:00 [medline]
PHST- 2018/01/09 06:00 [entrez]
AID - 10.1519/JSC.0000000000002422 [doi]
PST - ppublish
SO  - J Strength Cond Res. 2019 Apr;33(4):995-1000. doi: 10.1519/JSC.0000000000002422.