Contrast Training, Post-activation Countermovement Jump Performance in High Strength Male
- Conditions
- Resistance Training
- Interventions
- Behavioral: Contrast training
- Registration Number
- NCT05987046
- Lead Sponsor
- National Taiwan Sport University
- 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.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Male
- Target Recruitment
- 21
- Least 2 years of resistance training experience.
- Least 1.75 times body weight of squat 1RM
- Currently engaged in regular exercise training.
- Skeletal muscle injury within the past six months.
- Non-responders to PAPE
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description Contrast training sessions Contrast training Participants will perform three contrast training sessions for a week.
- Primary Outcome Measures
Name Time Method Within-group neuromuscular fatigue Up to 2 weeks. 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.
post-activation performance enhancement (PAPE) Change in baseline and 1, 3, 5, 7, 9, and 11 minutes after each squat set. PAPE will be evaluated by maximum height of countermovement jump in this study.
Between-group neuromuscular fatigue Up to 2 weeks. Between-group neuromuscular fatigue will be evaluated by the fastest mean concentric velocity of each squat set in this study.
Between-day squat performance Up to 2 weeks. Between-day squat performance will be evaluated by the fastest mean concentric velocity of first squat set for each contrast training in this study.
Delayed potentiation of neuromuscular performance (DPNP) Up to 2 weeks. DPNP will be evaluated by maximum height of countermovement jump in this study.
- Secondary Outcome Measures
Name Time Method Body fat Baseline The body weight and fat weight will be combined to calculate the body fat in percentage.
Concentric mean force of squat Up to 2 weeks. Concentric mean force in newtons.
Concentric peak power of squat Up to 2 weeks. Concentric peak power in watts.
Squat 1RM Baseline Squat 1RM will be evaluated maximum weight lifted for 1 repetition of squat in this study.
Concentric peak force of squat Up to 2 weeks. concentric peak force in newtons.
Concentric rep duration of squat Up to 2 weeks. Concentric rep duration in scend.
Weight Baseline Weight in kilograms.
Height in meters Baseline Height in meters.
Concentric peak velocity of squat Up to 2 weeks. Concentric mean velocity in meters per second.
Concentric mean power of squat Up to 2 weeks. concentric mean velocity in watts.
Eccentric min velocity of squat Up to 2 weeks. Eccentric min velocity in meters per second.
Eccentric peak force of squat Up to 2 weeks. Eccentric peak force in newtons.
Concentric mean velocity of squat Up to 2 weeks. Concentric mean velocity in meters per second.
Concentric mean velocity loss of squat Up to 2 weeks. Concentric mean velocity loss in percentage.
Dip of squat Up to 2 weeks. Dip in meters.
Eccentric peak velocity of squat Up to 2 weeks. Eccentric peak velocity in meters per second.
Vertical distance of squat Up to 2 weeks. Vertical distance in meters.
Trial Locations
- Locations (1)
National Taiwan Sport University
🇨🇳Taoyuan, Taiwan