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Student researcher graduated and study will not be done.
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The purpose of this study is to examine the potentiation effects of 2 sets of multi-joint eccentric overload maximal contractions on muscle function.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Cycling exercise | Active Comparator | Cycling on a cycle ergometer instead of doing the experimental eccentric exercise. |
|
| Eccentric exercise | Experimental | Perform 2 sets of maximal eccentric contractions as the single session exercise intervention. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Eccentric Exercise | Other | Individuals will do a randomized crossover intervention involving maximal eccentric contractions (2 sets of 6 per leg; experimental condition) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Vertical Jump | 3 countermovement vertical jumps, with 30 seconds of rest between attempts | Baseline (pretest) |
| Vertical Jump | 3 countermovement vertical jumps, with 30 seconds of rest between attempts | Immediately post intervention |
| Vertical Jump | 3 countermovement vertical jumps, with 30 seconds of rest between attempts | 12 minutes post intervention |
| Vertical Jump | 3 countermovement vertical jumps, with 30 seconds of rest between attempts | 20 minutes post intervention |
| Isokinetic eccentric maximal strength | Maximal eccentric strength on the Eccentron machine. 2 repetitions per time point | Baseline (pretest) |
| Isokinetic eccentric maximal strength | Maximal eccentric strength on the Eccentron machine. 2 repetitions per time point | Immediately post intervention |
| Isokinetic eccentric maximal strength | Maximal eccentric strength on the Eccentron machine. 2 repetitions per time point | 12 minutes post intervention |
| Isokinetic eccentric maximal strength |
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Exclusion Criteria:
Inclusion criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Brennan J Thompson, PhD | Utah State University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Utah State University | Logan | Utah | 84322 | United States |
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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.
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| Cycle ergometer | Other | Individuals will do a randomized crossover intervention involving cycling (active control) exercise |
|
Maximal eccentric strength on the Eccentron machine. 2 repetitions per time point
| 20 minutes post intervention |