Contrast Training, Post-activation Countermovement Jump Performance in High Strength Male

NCT ID: NCT05987046

Last Updated: 2024-04-09

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 21 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-09-04
• Study Completion Date: 2024-01-26

Brief Summary

The study investigated the effects of three contrast training sessions in a week on post-activation countermovement jump performance in high strength male.

Detailed Description

Previous researches indicated that the primary contributor of contrast training to improving explosive performance might be the phenomenon of post-activation performance enhancement (PAPE), with emphasis on conducting plyometric training at the optimal PAPE time. However, the PAPE appeared to be susceptible to fatigue and delayed potentiation of neuromuscular performance. Thus, its applicability in practical training is not yet clarified. The purposes of this study are to: 1) examine the effects of three contrast training sessions in a week on individual and group's PAPE and the optimal timepoint of PAPE; 2) assess the intrasession and intersession reliability of the optimal PAPE timepoints of both individuals and groups; 3) determine the relationship between kinematic parameters during resistance training and PAPE.

Qualified participants will visit the laboratory five times for experimental familiarization, One repetition maximum (1RM) of parallel squat test, and three contrast training sessions, with each contrast training session consisting of three sets of parallel squats in a week. Alongside this, countermovement jump tests will be conducted before the first set of squats and at 1, 3, 5, 7, 9, and 11 minutes after each squat set, with the kinematic parameters of the parallel squats also being collected.

Conditions

Resistance Training

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Contrast training sessions

Participants will perform three contrast training sessions for a week.

Group Type: EXPERIMENTAL

Contrast training

Intervention Type: BEHAVIORAL

Three sets of three repetitions of parallel squats at 90% of 1RM

Interventions

Contrast training

Three sets of three repetitions of parallel squats at 90% of 1RM

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Least 2 years of resistance training experience.
• Least 1.75 times body weight of squat 1RM
• Currently engaged in regular exercise training.

Exclusion Criteria

• Skeletal muscle injury within the past six months.
• Non-responders to PAPE

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

National Taiwan Sport University

OTHER

Sponsor Role: lead

Responsible Party

Tzai-Li Li

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Tzai-Li Li, Phd

Role: STUDY_DIRECTOR

National Taiwan Sport University

Locations

National Taiwan Sport University

Taoyuan District, , Taiwan

Countries

Taiwan

Other Identifiers

NationalTaiwanSportU

Identifier Type: -

Identifier Source: org_study_id