ArticleScientific reports2023
The effectiveness of isometric protocols using an external load or voluntary effort on jump height enhancement in trained females.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.
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Who cites it
12 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- From Populations to Programming Variables: Post-Activation Performance Enhancement Following Isometric Contractions on Muscular Strength and Power-A Systematic Review and Meta-Analysis.European journal of sport science · 2026Pooled it
- Post-activation potentiation enhancement induction strategies with different rest intervals on jump performance: a meta-analysis.Frontiers in physiology · 2025Pooled it
- Acute Performance, Mechanical and Thermal Effects of Isometric Conditioning Versus Standardized Volleyball Pre-Training Activation in Highly Trained Male Players.Journal of sports science & medicine · 2026Trial
- Do Sprinters and Jumpers Differ in the Acute Countermovement-Jump Response to Isometric Conditioning Protocols? An Exploratory Study.Muscles (Basel, Switzerland) · 2026Article
- Supramaximal Isometric Holds Enhance Squat Performance: An Integrated Analysis of Barbell Kinematics, Force Production, and Postural Stability.Sports (Basel, Switzerland) · 2026Article
- Health-Related Effects of a Short Isometric Exercise Program Integrated into School Physical Education: The Role of Biological Maturation and Baseline Functional Status.Healthcare (Basel, Switzerland) · 2026Article
- Acute effects of rapid versus sustained isometric contraction durations on countermovement jump performance in national level young male soccer players.Scientific reports · 2025Article
- Acute Effects of Isometric Contraction Distribution on Jump Performance in Volleyball Players.Journal of functional morphology and kinesiology · 2025Article
- Isometric Conditioning Activity and Jump Performance: Impact of Training Status in Male Participants.Journal of clinical medicine · 2025Article
- Effects of force- and velocity-oriented conditioning activities on jump height in strength-deficient male participants.Frontiers in physiology · 2025Article
- The effects of different exercise loads in plyometric resistance training on respiratory and hormonal levels in female volleyball players.Frontiers in physiology · 2025Article
- Post-activation performance enhancement (PAPE) protocols do not further increase jumping performance beyond warm-up effects: findings from three acute randomized crossover trials.Frontiers in physiology · 2024Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study aimed to examine the effectiveness of isometric post-activation performance enhancement protocols using an external load (EXL) or voluntary effort (VE) on jump height (JH) in trained females divided into EXL (n = 15), VE (n = 14), and control (CON; n = 12) groups. JH was assessed using countermovement jumps at baseline and the third, fifth, seventh, and ninth minutes after the protocols. The EXL performed three sets of back squats with a 70%-repetition maximum load for four seconds, with one-minute breaks. The VE performed three sets of pushing against an immovable bar in the back squat position for five seconds, with one-minute breaks. The CON group ran on a treadmill at 6 km/h for four minutes. A RM-ANOVA showed a significant interaction for group-time (p < 0.01). The EXL protocol provided JH improvement at the third minute compared to baseline (p = 0.01), though it decreased in subsequent minutes (p < 0.05). JH declined in the VE group at the third and fifth minutes (p < 0.05), then peaked, surpassing baseline, after nine minutes (p = 0.04). No significant differences were found between the protocols in the relative effect (best-baseline) (p = 0.09), though the EXL group appeared to gain more (effect size [ES] = 0.76). Both protocols improved JH, but caution is required due to peak performance time and potential JH reduction.
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