Clinical trial NCT06083532: Effect of PAP on Lower Limb Explosive Force in Basketball Players in CHINA
Official title: The Effect of Post-activation Potentiation on Lower Limb Explosive Force in Collegiate Male Basketball Players in China
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: Physical Fitness
Keywords: post-activation potentiation
lower limbs explosive force
complex training
male basketball players
dynamic warm-up
Lead sponsor: Universiti Putra Malaysia
Sponsor class: OTHER
First posted: 2023-10-16
Enrollment: 48
Sex: MALE
Minimum age (years): 18
Maximum age (years): 22
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: In this experiment, the experimental group conducted the post-activation potentiation combined with complex training content intervention designed in this study. In contrast, the control group will perform a training program that combines warm-up routine methods with complex training.
Primary purpose: BASIC_SCIENCE

Brief summary: The phenomenon that high-intensity warm-up activities help improve muscle strength and explosive performance is called post-activation potentiation (PAP), which is a warm-up method that uses high-intensity stimulation to induce the activation of more type II muscle fibers. However, the results of studies exploring the enhancing effect of PAP on lower limb explosive strength are still controversial. In studies with no significant difference, it is believed that there are many factors that affect PAP, such as activation method, activation intensity, recovery time and individual factors, etc., and it is difficult to control during implementation. In addition, traditional warm-up methods such as jogging and stretching have been shown to have limited effectiveness in improving athletes' performance. In the past, there have been many studies on the combination of PAP and lower limb explosive strength, but there are almost no studies on the long-term effects of PAP on the lower limb explosive strength of basketball players. Therefore, this study studies the characteristics of PAP in order to find the best activation scheme for PAP, and then combines the enhancement effect of PAP with the explosive power of the lower limbs to improve the explosive power of the lower limbs of basketball players, and verifies the long-term effect of combining PAP with explosive power training. In order to provide new changes and breakthroughs in the design of physical training for basketball players and improve the sports performance of college male basketball players.

Detailed description: The study was a four-groups randomized controlled trial. In the study, the experimental group conducted a 12-week post-activation potentiation combined with lower limb explosive training intervention designed in this study. In contrast, the control group also underwent a 12-week lower limb explosive training intervention, but the warm-up method was conventional warm-up activities. Subjects participated in training intervention programs twice weekly. After the 12-week training program, data collection was completed.

1. Warm-up content： The experimental group used PAP as a warm-up method and performed pre-stimulation to induce post-activation potentiation. The pre-activation method is back squats. The pre-activation intensity and frequency are 70% 1RM （One-Repetition Maximum） × 3, 80% 1RM × 2, 90% 1RM × 1 respectively, and the interval time is 2 minutes. The control group performed routine warm-up activities.
2. Explosive strength training content for lower limbs： After completing the warm-up activities, there was a six-minute interval, and then the experimental group and the control group began the same explosive training content of the lower limbs.

Eligibility criteria: Inclusion Criteria:

* The population must be collegiate male basketball players and between the ages of 18 and 22；
* Contestants must be in good health, and must have a physical training background；
* Only students who can complete these training requirements can be included in the research data.

Exclusion Criteria:

* Collegiate female basketball players should be excluded from this study;
* Players with less than one year of physical training experience;
* Participants were not healthy collegiate male basketball players such as injured players, mental patient or special students who were seriously depressed, sub-health;
* Students who are consistently late or absent from training sessions will eventually be excluded.

Primary outcomes:
measure: Counter Movement Jump performance of subjects （height）
timeFrame: Pre-test: Before experiment; Post-test: 12 weeks end.
measure: Drop Jump performance of subjects （height）
timeFrame: Pretest: Before experiment; Post-test: 12 weeks end.
measure: Squat Jump performance of subjects （height）
timeFrame: Pre-test: Before experiment; Post-test: 12 weeks end.
measure: Run-up right-foot take-off, Run-up left-foot take-off performance of subjects（height）
timeFrame: Pre-test: Before experiment; Post-test: 12 weeks end.
measure: 30-meter sprint performance of subjects（time）
timeFrame: Pre-test: Before experiment; Post-test: 12 weeks end.
Secondary outcomes:
Other outcomes:
Locations:
city: Wuhan
country: China
facility: Wuhan Sports University
state: Hubei
Study officials:
affiliation: Universiti Putra Malaysia
name: Jiazhe Li, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Golas A, Maszczyk A, Zajac A, Mikolajec K, Stastny P. Optimizing post activation potentiation for explosive activities in competitive sports. J Hum Kinet. 2016 Sep 10;52:95-106. doi: 10.1515/hukin-2015-0197. eCollection 2016 Sep 1.
citation: Kobal R, Pereira LA, Kitamura K, Paulo AC, Ramos HA, Carmo EC, Roschel H, Tricoli V, Bishop C, Loturco I. Post-Activation Potentiation: Is there an Optimal Training Volume and Intensity to Induce Improvements in Vertical Jump Ability in Highly-Trained Subjects? J Hum Kinet. 2019 Oct 18;69:239-247. doi: 10.2478/hukin-2019-0016. eCollection 2019 Oct.
citation: Kilduff LP, Owen N, Bevan H, Bennett M, Kingsley MI, Cunningham D. Influence of recovery time on post-activation potentiation in professional rugby players. J Sports Sci. 2008 Jun;26(8):795-802. doi: 10.1080/02640410701784517.