PMID- 35544357
OWN - NLM
STAT- MEDLINE
DCOM- 20230130
LR  - 20230819
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 37
IP  - 2
DP  - 2023 Feb 1
TI  - Comparing the Effects of Long-Term vs. Periodic Inclusion of Isometric Strength 
      Training on Strength and Dynamic Performances.
PG  - 305-314
LID - 10.1519/JSC.0000000000004276 [doi]
AB  - Lum, D, Joseph, R, Ong, KY, Tang, JM, and Suchomel, TJ. Comparing the effects of 
      long-term vs. periodic inclusion of isometric strength training on strength and 
      dynamic performances. J Strength Cond Res 37(2): 305-314, 2023-This study 
      compared the effects of including isometric strength training (IST) for 
      consecutive 24 weeks (CIST) against a periodic inclusion (PIST) of this mode of 
      training on strength and dynamic performances. Twenty-four floorball athletes 
      (age: 23 +/- 2.7 years, stature: 1.74 +/- 2.08 m, and body mass: 72.7 +/- 14.4 kg) were 
      randomly assigned to the control (CON), CIST, or PIST group. Athletes completed 
      20-m sprint, countermovement jump (CMJ), and isometric midthigh pull (IMTP) 
      during pre-test and were tested on weeks 6, 12, 18, and 24. All groups performed 
      a similar strength training program twice per week. However, 2 sets of squats 
      were replaced with isometric squat in CIST for all 24 weeks but only on weeks 1-6 
      and 13-18 for PIST. A significant main effect for time was observed for 5-, 10-, 
      and 20-m sprint time, CMJ height, peak force, peak power, time to take-off, 
      modified reactive strength index, IMTP peak force, relative peak force, and force 
      at 200 milliseconds ( p = <0.001-0.037). Isometric strength training for 24 
      consecutive weeks resulted in greater improvement in 5-m sprint time than CON at 
      week 24 ( p = 0.024, g = 1.17). Both CIST and PIST resulted in greater 
      improvements in 10-m sprint time than CON at various time points ( p = 
      0.007-0.038 and 0.038, g = 1.07-1.44 and 1.18, respectively). Isometric strength 
      training for 24 consecutive weeks and PIST resulted in greater improvements in 
      20-m sprint time than CON at week 6 ( p = 0.007 and 0.025, g = 1.65 and 1.40, 
      respectively). The results showed that the inclusion of IST resulted in greater 
      improvements in sprint performance than CON but no significant difference in all 
      measured variables with PIST.
CI  - Copyright (c) 2022 National Strength and Conditioning Association.
FAU - Lum, Danny
AU  - Lum D
AD  - Sport Science and Sport Medicine, Singapore Sport Institute, Singapore, 
      Singapore; and.
FAU - Joseph, Ranald
AU  - Joseph R
AD  - Sport Science and Sport Medicine, Singapore Sport Institute, Singapore, 
      Singapore; and.
FAU - Ong, Keng Y
AU  - Ong KY
AD  - Sport Science and Sport Medicine, Singapore Sport Institute, Singapore, 
      Singapore; and.
FAU - Tang, Jei M
AU  - Tang JM
AD  - Sport Science and Sport Medicine, Singapore Sport Institute, Singapore, 
      Singapore; and.
FAU - Suchomel, Timothy J
AU  - Suchomel TJ
AD  - Department of Human Movement Sciences, Carroll University, Waukesha, Wisconsin.
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
DEP - 20220509
PL  - United States
TA  - J Strength Cond Res
JT  - Journal of strength and conditioning research
JID - 9415084
SB  - IM
MH  - Adult
MH  - Humans
MH  - Young Adult
MH  - Athletes/statistics & numerical data
MH  - *Athletic Performance/physiology
MH  - *Resistance Training/methods
MH  - *Running/physiology
EDAT- 2022/05/12 06:00
MHDA- 2023/01/28 06:00
CRDT- 2022/05/11 12:33
PHST- 2022/05/12 06:00 [pubmed]
PHST- 2023/01/28 06:00 [medline]
PHST- 2022/05/11 12:33 [entrez]
AID - 00124278-202302000-00007 [pii]
AID - 10.1519/JSC.0000000000004276 [doi]
PST - ppublish
SO  - J Strength Cond Res. 2023 Feb 1;37(2):305-314. doi: 10.1519/JSC.0000000000004276. 
      Epub 2022 May 9.