Comparison of post-activation performance enhancement (PAPE) after isometric and isotonic exercise on vertical jump performance.
PLoS One
; 16(12): e0260866, 2021.
Article
in En
| MEDLINE
| ID: mdl-34855891
ABSTRACT
PURPOSE:
This study aimed to compare the post-activation performance enhancement (PAPE) induced by isometric and isotonic exercise on vertical jump performance.METHODS:
18 healthy trained men (25.8±2.7 years; 78.4±8.2 kg; 175.7±6.1 cm; 25.4±1.8 BMI; 126.72±10.8 kg squat 1-RM) volunteered for this study. They randomly performed two different PAPE protocols Isotonic squats (ISOTS), which consisted of 2 sets of 3 repetitions at 75% of one-maximum repetition (1-RM); and isometric squats (ISOMS), which consisted of 2 sets of 4 seconds of submaximal (75% of 1-RM) isometric contraction at 90°-knee flexion. Countermovement jump (CMJ) height was tested at baseline and 4 minutes after each conditioning set.RESULTS:
CMJ height significantly increased after set 1 in both PAPE protocols (ISOMS p <0.001; ES = 0.34; ISOTS p <0.001; ES = 0.24), with respect to the baseline jump. However, after set 2 no significant changes in CMJ height were observed for any protocol (ISOMS p = 0.162; ES = 0.11; ISOTS p = 0.976; ES = 0.06). No significant differences (p>0.05) were found between both isometric and isotonic exercise conditions.CONCLUSIONS:
Despite both protocols showed similar PAPE effects on CMJ height after set 1, none of the protocols demonstrated greater efficacy in increasing subsequent performance in healthy trained men.
Full text:
1
Database:
MEDLINE
Main subject:
Exercise
/
Muscle, Skeletal
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Muscle Strength
/
Athletic Performance
/
Athletes
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Isometric Contraction
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Isotonic Contraction
Type of study:
Clinical_trials
Limits:
Adult
/
Humans
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Male
Language:
En
Year:
2021
Type:
Article