Effect of PAP on Lower Limb Explosive Force in Basketball Players in CHINA

NCT ID: NCT06083532

Last Updated: 2023-10-16

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: NA
• Total Enrollment: 48 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-09-15
• Study Completion Date: 2024-02-15

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.

Conditions

Physical Fitness

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: TRIPLE

Study Groups

PAP induced at an intensity of 70% 1RM（One-Repetition Maximum）combined with complex training

PAP induced at an intensity of 70% 1RM combined with complex training was shown over the 12 weeks.

Group Type: EXPERIMENTAL

PAP induced at an intensity of 70% 1RM combined with complex training

Intervention Type: BEHAVIORAL

This group of subjects first performed 3 sets of 70% 1RM squats after a routine warm-up, 3 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

PAP induced at an intensity of 80% 1RM combined with complex training

PAP induced at an intensity of 80% 1RM combined with complex training was shown over the 12 weeks.

Group Type: EXPERIMENTAL

PAP induced at an intensity of 80% 1RM combined with complex training

Intervention Type: BEHAVIORAL

This group of subjects first performed 3 sets of 80% 1RM squats after a routine warm-up, 2 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

PAP induced at an intensity of 90% 1RM combined with complex training

PAP induced at an intensity of 90% 1RM combined with complex training was shown over the 12 weeks.

Group Type: EXPERIMENTAL

PAP induced at an intensity of 90% 1RM combined with complex training

Intervention Type: BEHAVIORAL

This group of subjects first performed 3 sets of 90% 1RM squats after a routine warm-up, 1 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

Routine warm-up combined with complex training

Routine warm-up combined with complex training was shown over the 12 weeks.

Group Type: ACTIVE_COMPARATOR

Routine warm-up combined with complex training

Intervention Type: BEHAVIORAL

This group of subjects first completed a 30-minute routine warm-up, then rested for 6 minutes, and then performed complex training consisted of maximum strength training (back squats) and plyometric training (drop jump). Back squat intensity \& repetition is 80% 1RM × 4, 4 sets, with an interval of 2 minutes; after resting for 3 minutes, perform a drop jump, Intensity \& Repetition is 50cm (height) × 10, 4 sets, with an interval of 2 minutes. Intervention training was conducted twice weekly for 12 weeks, and the intensity was gradually increasing over the 12 weeks.

Interventions

PAP induced at an intensity of 70% 1RM combined with complex training

This group of subjects first performed 3 sets of 70% 1RM squats after a routine warm-up, 3 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

Intervention Type: BEHAVIORAL

PAP induced at an intensity of 80% 1RM combined with complex training

This group of subjects first performed 3 sets of 80% 1RM squats after a routine warm-up, 2 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

Intervention Type: BEHAVIORAL

PAP induced at an intensity of 90% 1RM combined with complex training

This group of subjects first performed 3 sets of 90% 1RM squats after a routine warm-up, 1 times per set, with an interval of 2 minutes between sets. The entire process was maintained for 30 minutes, and then after a 6-minute rest, they performed complex training consists of maximum strength training (back squats) and plyometric training (drop Jump). The Intensity \& Repetition of back squats is 80% 1RM × 4, 4 sets, interval time is 2min; rest for 3 minutes. , perform drop jump, intensity \& repetition is 50cm (height) × 10, 4 sets, and the rest time is 2 minutes. Intervention training was conducted twice weekly for 12 weeks,and the intensity is gradually increasing over the 12 weeks.

Intervention Type: BEHAVIORAL

Routine warm-up combined with complex training

This group of subjects first completed a 30-minute routine warm-up, then rested for 6 minutes, and then performed complex training consisted of maximum strength training (back squats) and plyometric training (drop jump). Back squat intensity \& repetition is 80% 1RM × 4, 4 sets, with an interval of 2 minutes; after resting for 3 minutes, perform a drop jump, Intensity \& Repetition is 50cm (height) × 10, 4 sets, with an interval of 2 minutes. Intervention training was conducted twice weekly for 12 weeks, and the intensity was gradually increasing over the 12 weeks.

Intervention Type: BEHAVIORAL

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.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 22 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Universiti Putra Malaysia

OTHER

Sponsor Role: lead

Responsible Party

Jiazhe Li

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Jiazhe Li, PhD

Role: PRINCIPAL_INVESTIGATOR

Universiti Putra Malaysia

Locations

Wuhan Sports University

Wuhan, Hubei, China

Site Status: RECRUITING

Countries

China

Central Contacts

Jiazhe Li, PhD

Role: CONTACT

gs60376@student.upm.edu.my

+86 19387800662

Soh Kim Geok, Professor

Role: CONTACT

kims@upm.edu.my

03-97698153

Facility Contacts

Jiazhe Li, Phd

Role: primary

gs60376@student.upm.edu.my

+86 19387800662

Shengyao Luo, Phd

Role: backup

syluo1993@gmail.com

+86 13907972239

References

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.

Reference Type: RESULT

PMID: 28149397 (View on PubMed)

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.

Reference Type: RESULT

PMID: 31666906 (View on PubMed)

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.

Reference Type: RESULT

PMID: 18569545 (View on PubMed)

Related Links

http://pubmed.ncbi.nlm.nih.gov/28149397/

This article is from National Library of Medicine

http://pubmed.ncbi.nlm.nih.gov/31666906/

This article is from National Library of Medicine

http://pubmed.ncbi.nlm.nih.gov/18569545/

This article is from National Library of Medicine

Other Identifiers

Li Jiazhe

Identifier Type: -

Identifier Source: org_study_id