Department
Exercise Science and Sport Management
Document Type
Article
Publication Date
1-1-2018
Abstract
The PhysioFlow™ is a piece of equipment that uses bioimpedance cardiography to measure central hemodynamics. The purpose of this research was to explore the novel approach of monitoring central hemodynamics during free weight resistance exercise using bioimpedance cardiography throughout a 5 repetition maximum (5RM). Thirty participants ranging from beginner to advanced lifters (16 males and 14 females) completed a 5RM for back squat, seated push press, and bicep curl while connected to the PhysioFlow™ to assess the response of heart rate (HR), stroke volume (SV), cardiac output (Q), and ejection fraction (EF). Participants were cued for form and to breathe normally throughout the lifts. The PhysioFlow™ detected an increase in HR and Q for all lifts between rest and each repetition (p < 0.05). There was also an increase in HR and Q from repetition 1 to repetition 5 for all lifts (p < 0.05). No changes in EF or SV were detected between resting measurements and each repetition for all lifts (p > 0.05) and no changes in EF or SV were detected when all repetitions were compared to each other for all lifts (p > 0.05). In conclusion, the PhysioFlow™ was able to detect changes in HR and Q during dynamic free weight resistance exercise. This novel approach may provide a mechanism for monitoring central hemodynamics during free weight resistance training. However, more research needs to be conducted as the exercise protocol for this investigation did not allow for a comparison to a reference method.
Journal Title
International Journal of Exercise Science
Journal ISSN
1939-795X
Volume
11
Issue
2
First Page
342
Last Page
354