Related Experiment Video
Updated: Aug 14, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Preferred body type of fitness instructors among university students in exercise classes
Retta R Evans1, Ellen M Cotter, Jane L P Roy
1University of Alabama at Birmingham, EB 259, 1530 3rd Avenue South, Birmingham, AL 35294, USA. rrevans@uab.edu
Abstract:
This study examined the relationship between participants' physique anxiety, eating behaviors, somatotype, and the preferred qualifications and body type of a fitness instructor. Subjects were 171 students attending fitness classes at a university. Analysis indicated that the women preferred a thinner fitness instructor than men and that enthusiasm, motivation, and being physically fit were considered the most important characteristics overall. No significant racial differences in key variables were found.
Related Concept Videos
Inclusive Fitness
Exercise and Muscle Performance
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Classification of Skeletal Muscle Fibers
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Chest Physiotherapy
Purpose
CPT is primarily used for patients with excessive bronchial secretions who have difficulty clearing...