Идёт набор NCT07240597

Acute Effects of Different Warm-Up Protocols in Competitive Young Swimmers

Без фазы С лечением Athletes Post Activation Potentiation Countermovement Jump Performance

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают: В протоколе указаны: Squats with resistance band, Vertical jump after dropping from a box, Combination BS + DJ.
Кому может быть актуально: Состояния в реестре: Athletes, Post Activation Potentiation, Countermovement Jump, Performance. Базовые параметры: 11 лет — 18 лет · Все.
Что важно проверить: Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится: Италия
Следующий шаг: Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

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Официальное название

Acute Effects of Different Potentiation Protocols During Warm-Up in Competitive Young Swimmers: A Randomized Crossover Trial

Обзор

Several warm-up strategies are commonly employed by athletes to optimize athletic performance and minimize the risk of injury. Recently, Post-Activation Performance Enhancement (PAPE) has been demonstrated to be effective in improving athletic performance. Nevertheless, the difference with the general warm-up is still unclear and poorly studied. Conventionally, short-term performance improvements achieved after brief periods of maximal activity have been attributed to PAP, a muscle memory mechanism that generates involuntary and short-lived effects (\~28 seconds). This condition appears to be activated only by a history of localized maximal contractions. In the literature, various conditioning protocols with differing durations and intensities have been explored, often finding conflicting results in terms of athletic performance. In swimming, few PAPE warm-up protocols outside the pool have been studied, despite their potential usefulness considering the waiting times before competitions. Therefore, this study explores the effects of three different warm-up protocols in young swimmers. Specifically, different exercise protocols will be included in the athletes' usual warm-up routine, aimed at improving athletic performance through PAPE effects. In line with existing literature, the performance parameters examined are the countermovement jump (CMJ) and the times recorded for covering race distances ( 25 m, 50 m, 100 m). In addition, skin temperature, heart rate (HR), muscle oxygen saturation (SmO2), and perceived exertion (RPE) are also measured after the protocols to investigate possible relationships with performance measures. Nevertheless, the primary aim of this study is to compare different warm-up protocols in young swimmers to maximize their athletic performance.

Подробное описание

All outcome data will be expressed as mean ± standard deviation. The first warm-up section for all athletes will take place in the pool. Subsequently, baseline assessments (T0) will be conducted. Through a randomized study design, each participant will perform three plyometric protocols (squats with elastic bands, box jumps, or a combination of both).

To examine differences in the main outcomes, a repeated-measures ANOVA (4 conditions x 5 time points) will be conducted. When a significant condition × time interaction is detected, post hoc analyses to determine specific between and within-group differences. Effect sizes will be reported as partial eta squared (η²p). Statistical significance will be set at p \< 0.05 for all analyses

Вмешательства

Другое Squats with resistance band
The elastic band squat protocol consisted of four sets of four repetitions with two minutes of recovery between sets (estimated total time: 9 minutes). Participants in a standing position should take one of the four elastic resistance bands (GymBeam), anchor it under their feet, and under each shoulder.
Другое Vertical jump after dropping from a box
A box for plyometric training (Yes4All) will be used in its 45 cm height section. The protocol consists of three sets of four repetitions. Fifteen seconds of recovery time will be allowed to reposition above the box, and three minutes of recovery time between sets (estimated total time: 10 minutes). Participants will be encouraged to reach maximum height with each jump, without bending their knees during the flight phase.
Другое Combination BS + DJ
A combination of squats with an elastic band and vertical plyometric jump after dropping from a box. The protocols are the same as those described in the other interventions (total estimated time: 19 minutes).

Первичные конечные точки

Counter Movement Jump (CMJ) [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0), 15 seconds after the protocols (T1), 3 minutes after the protocols (T2), 6 minutes after the protocols (T3), 9 minutes after the protocols (T4), 12 minutes after the protocols (T5)]
Time Swimming Trials [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0) and after the individual time of recovery resulting from the height of the CMJ (T1)]

Вторичные конечные точки (4)

Skin Temperature [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0), 15 seconds after the protocols (T1), 3 minutes after the protocols (T2), 6 minutes after the protocols (T3), 9 minutes after the protocols (T4), 12 minutes after the protocols (T5)]
Heart Rate (HR) [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0), 15 seconds after the protocols (T1), 3 minutes after the protocols (T2), 6 minutes after the protocols (T3), 9 minutes after the protocols (T4), 12 minutes after the protocols (T5)]
Muscle Oxygen Saturation (SmO2) [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0), 15 seconds after the protocols (T1), 3 minutes after the protocols (T2), 6 minutes after the protocols (T3), 9 minutes after the protocols (T4), 12 minutes after the protocols (T5)]
Ratings of perceived exertion (RPE) [Срок оценки: Before the start of the investigated warm-up phase (baseline, T0), 15 seconds after the protocols (T1), 3 minutes after the protocols (T2), 6 minutes after the protocols (T3), 9 minutes after the protocols (T4), 12 minutes after the protocols (T5)]

Критерии участия

Критерии включения

Active participation in competitive training programs (at least 10 hours per week), at least one year of experience in competitions organized by the Italian Swimming Federation, and no recent injuries.
Experience of resistance training for at least 6 months