Assessment of Blood Flow in the Human Calf During Maximal Intermittent Dynamic Exercise Utilizing Impedance Plethysmography

Twenty college-age males (10 trained runners and ten untrained) were studied under rest, maximal intermittent dynamic calf exercise and recovery conditions to determine differences in calf blood flow, peripheral pulse rate, calf blood volume/beat, cardiac output, cardiac index, heart rate and stroke volume. During rest significant differences (p (LESSTHEQ) .05) between groups were found for peripheral pulse rate, cardiac output, heart rate and stroke volume. During exercise a significant difference between groups was found for peripheral pulse rate. During the first 60 seconds of recovery (recovery 1) significant differences between groups were found for calf blood flow (ml/100 ml tissue/min), peripheral pulse rate, and heart rate. During the last 9 minutes of recovery (recovery 2) significant differences between groups were found for peripheral pulse rate, cardiac output, cardiac index, and heart rate. These results demonstrate that during these type of intermittent exercises calf blood flow (ml/min) is reduced below resting values approximately 61% and 63% for trained and untrained groups, respectively. It is concluded that through the use of impedance cardiography (plethysmography) and the protocols utilized that: (1) differences between groups can be found relative to peripheral pulse rate, cardiac output, heart rate and stroke volume during rest; (2) differences can be found relative to peripheral pulse rate during intermittent exercise; (3) differences can be found relative to calf blood flow (ml/100 ml tissue/min), peripheral pulse rate and heart rate during the first 60 seconds of recovery and; (4) differences can be found relative to peripheral pulse rate, cardiac output, cardiac index and heart rate during the last 9 minutes of recovery.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physical Education

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Demeter, Robert Joseph

• Biology, Animal Physiology

Identifier

(UMI)AAI8409907

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/71866