The actual cost to install a gas fireplace may vary depending on your location, the product selected, complexity of the installation process, additional accessories purchased, and other options. 1  Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
Stroke volume is also affected by the body's demand for oxygen, delivery of nutrients to the muscles and tissues and the removal of toxins, explains Cheetah Medical. For example, exercise increases the demand for oxygen, which results in a faster heart rate and increased stroke volume. People with a high level of cardiovascular fitness have larger stroke volumes and lower heart rates at rest than people who have a lower level of cardiovascular fitness.
Stroke volume and heart rate combine to form cardiac output, which the National Strength and Conditioning Association (NSCA) reports is the total amount of blood ejected to working areas of the body. Stroke volume refers to the amount of blood that is ejected with each systolic beat, and heart rate is simply the rate at which the heart beats, usually calculated in beats per minute. Both stroke volume and heart rate are interrelated, and an increase in one often results in a decrease in the other. Stroke volume and heart rate are influenced by a variety of factors, most notably exercise, neural and hormonal factors, and diet and medication. Video of the Day