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Updated: Jul 24, 2026
12:37
Surgical Placement of Catheters for Long-term Cardiovascular Exercise Testing in Swine
Published on: February 9, 2016
Cardiovascular function during treadmill exercise in the turkey.
Summary
Turkey heart rate and blood pressure increase with running speed. During exercise, blood lactate levels rise initially then stabilize, with minimal parasympathetic influence on heart rate.
Area of Science:
- Exercise physiology
- Avian physiology
- Cardiovascular responses
Background:
- Understanding physiological responses in birds during exercise is crucial.
- Previous data on turkey cardiovascular parameters during locomotion is limited.
Purpose of the Study:
- To investigate cardiovascular and blood lactate responses in turkeys across various running speeds.
- To determine the role of autonomic nervous system in modulating heart rate during exercise in turkeys.
Main Methods:
- Turkeys were subjected to treadmill running at different speeds.
- Measurements included heart rate, arterial pressure, and blood lactate levels.
- Pharmacological blockade of parasympathetic and sympathetic nervous systems was employed.
Main Results:
- Heart rate exhibited a hyperbolic increase with running speed, doubling at maximal exertion.
- Arterial pressure increased by 37% during severe exercise.
- Blood lactate levels increased with workload but stabilized during sustained locomotion.
- Parasympathetic tone was minimal during locomotion, while sympathetic blockade reduced resting heart rate.
Conclusions:
- Autonomic influences on heart rate are altered during locomotion in turkeys.
- The observed heart rate increase at high speeds is not solely attributable to lactate or ionotrophic effects.
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Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
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Purposes
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Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes