Post Activation Potentiation
Conditions
Brief summary
The purpose of this study is to examine the potentiation effects of 2 sets of multi-joint eccentric overload maximal contractions on muscle function.
Interventions
OTHEREccentric Exercise
Individuals will do a randomized crossover intervention involving maximal eccentric contractions (2 sets of 6 per leg; experimental condition)
OTHERCycle ergometer
Individuals will do a randomized crossover intervention involving cycling (active control) exercise
Sponsors
Brennan Thompson
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Investigator)
Intervention model description
Following a familiarization session, subjects will be assigned to an order for performing both an eccentric and a cycle (sham) session (i.e., crossover design, the order being randomized). These will be performed 3-7 days apart.
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Exclusion criteria
* lower body surgery or injury in the last 12 months * have any neuromuscular disease * height \>76 inches tall * height \<54 inches tall * eccentric strength greater than 725 pounds * pregnant or plan to be pregnant in the duration of the protocol * don't do resistance exercise at least once per week * perform intense cardio or strength training \>4 days per week * Present with any other significant comorbid conditions that would impair the ability to participate in the exercise-based testing Inclusion criteria: * 18 - 30 years old * strength train lower body 1-3 times per week
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Vertical Jump | Baseline (pretest) | 3 countermovement vertical jumps, with 30 seconds of rest between attempts |
| Isokinetic eccentric maximal strength | Baseline (pretest) | Maximal eccentric strength on the Eccentron machine. 2 repetitions per time point |
Countries
United States
Outcome results
None listed