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

Resistance Training Clinical Trial

Official title:

The Effects of Three Contrast Training Sessions in a Week on Post-activation Countermovement Jump Performance in High Strength Male

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05987046
• Other study ID #: NationalTaiwanSportU
• Status: Completed
• Phase: N/A
• Start date: September 4, 2023
• Est. completion date: January 26, 2024

Study information

• Verified date: April 2024
• Source: National Taiwan Sport University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

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

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 21
• Est. completion date: January 26, 2024
• Est. primary completion date: January 26, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 30 Years

Eligibility

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

Related Conditions & MeSH terms

• Resistance Training

Intervention

Behavioral:
• Contrast training
Three sets of three repetitions of parallel squats at 90% of 1RM

Locations

Country	Name	City	State
Taiwan	National Taiwan Sport University	Taoyuan

Sponsors (1)

Lead Sponsor	Collaborator
National Taiwan Sport University

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	post-activation performance enhancement (PAPE)	PAPE will be evaluated by maximum height of countermovement jump in this study.	Change in baseline and 1, 3, 5, 7, 9, and 11 minutes after each squat set.
Primary	Within-group neuromuscular fatigue	Within-group neuromuscular fatigue will be evaluated by velocity loss rate calculated from maximum and minimum concentric mean velocities of each set for squat in this study.	Up to 2 weeks.
Primary	Between-group neuromuscular fatigue	Between-group neuromuscular fatigue will be evaluated by the fastest mean concentric velocity of each squat set in this study.	Up to 2 weeks.
Primary	Between-day squat performance	Between-day squat performance will be evaluated by the fastest mean concentric velocity of first squat set for each contrast training in this study.	Up to 2 weeks.
Primary	Delayed potentiation of neuromuscular performance (DPNP)	DPNP will be evaluated by maximum height of countermovement jump in this study.	Up to 2 weeks.
Secondary	Weight	Weight in kilograms.	Baseline
Secondary	Height in meters	Height in meters.	Baseline
Secondary	Body fat	The body weight and fat weight will be combined to calculate the body fat in percentage.	Baseline
Secondary	Squat 1RM	Squat 1RM will be evaluated maximum weight lifted for 1 repetition of squat in this study.	Baseline
Secondary	Concentric mean force of squat	Concentric mean force in newtons.	Up to 2 weeks.
Secondary	Concentric peak force of squat	concentric peak force in newtons.	Up to 2 weeks.
Secondary	Concentric mean velocity of squat	Concentric mean velocity in meters per second.	Up to 2 weeks.
Secondary	Concentric mean velocity loss of squat	Concentric mean velocity loss in percentage.	Up to 2 weeks.
Secondary	Concentric peak velocity of squat	Concentric mean velocity in meters per second.	Up to 2 weeks.
Secondary	Concentric mean power of squat	concentric mean velocity in watts.	Up to 2 weeks.
Secondary	Concentric peak power of squat	Concentric peak power in watts.	Up to 2 weeks.
Secondary	Concentric rep duration of squat	Concentric rep duration in scend.	Up to 2 weeks.
Secondary	Dip of squat	Dip in meters.	Up to 2 weeks.
Secondary	Eccentric min velocity of squat	Eccentric min velocity in meters per second.	Up to 2 weeks.
Secondary	Eccentric peak velocity of squat	Eccentric peak velocity in meters per second.	Up to 2 weeks.
Secondary	Eccentric peak force of squat	Eccentric peak force in newtons.	Up to 2 weeks.
Secondary	Vertical distance of squat	Vertical distance in meters.	Up to 2 weeks.