13. Does Cross Education Influence Redistribution of Blood

Cameron Fails Hanover College
Faculty Sponsor(s): Bryant Stamford Hanover College
When exercising a muscle vigorously on one side of the body for the purpose of increasing strength, the homologous muscle on the contralateral side of the body may also increase in strength by some degree. This is called cross education. This study explored whether cross education also impacts the redistribution of blood flow (positive or negative) in the contralateral homologous muscle, increasing or decreasing volume of the non-exercised arm. This study was conducted with approval from the Hanover College Human Subjects Institutional Review Board. Methods: Eight Hanover College students with considerable experience lifting weights on a regular basis participated in one experimental session. Baseline arm volume measurements for each arm were taken using water displacement (Archimedes Principle), plus measurements with a tape measure prior to exercise. Each subject performed bicep curls with the dominant arm until volitional fatigue. A drop-set approach was employed, starting with 30 pounds to exhaustion, then decreasing by 5 pounds for the next set performed immediately, etc.. Following exercise, both the dominant and non-dominant arms were remeasured for a change in volume and compared with pre-exercise values. Results and Discussion: Data collection is ongoing and nearing completion. Pilot data plus initial findings revealed no cross education effect in the non-dominant arm with regard to arm volume and the redistribution of blood flow. This suggests that blood flow redistribution is controlled completely by local factors and is not influenced neurologically by what is occurring on the opposite side of the body.
Pharmacy, Health Sciences, & Exercise Science
Poster Presentation

When & Where

Irwin Library Lower Level