ERIC Number: EJ1016933
Record Type: Journal
Publication Date: 2013-Dec
Abstractor: As Provided
An Active Learning Mammalian Skeletal Muscle Lab Demonstrating Contractile and Kinetic Properties of Fast- and Slow-Twitch Muscle
Head, S. I.; Arber, M. B.
Advances in Physiology Education, v37 n4 p405-414 Dec 2013
The fact that humans possess fast and slow-twitch muscle in the ratio of approximately 50% has profound implications for designing exercise training strategies for power and endurance activities. With the growth of exercise and sport science courses, we have seen the need to develop an undergraduate student laboratory that demonstrates the basic properties of fast- and slow-twitch mammalian skeletal muscle. This laboratory illustrates the major differences in contractile properties and fatigue profiles exhibited by the two muscle types. Students compare and contrast twitch kinetics, fused tetanus characteristics, force-frequency relationships, and fatigue properties of fast- and slow-twitch muscles. Examples of results collected by students during class are used to illustrate the type of data collected and analysis performed. During the laboratory, students are encouraged to connect factual information from their skeletal muscle lectures to their laboratory findings. This enables student learning in an active fashion; in particular, the isolated muscle preparation demonstrates that much of what makes muscle fast or slow is myogenic and not the product of the nervous or circulatory systems. This has far-reaching implications for motor control and exercise behavior and therefore is a crucial element in exercise science, with its focus on power and endurance sport activities. To measure student satisfaction with this active learning technique, a questionnaire was administered after the laboratory; 96% of the comments were positive in their support of active versus passive learning strategies.
Descriptors: Exercise Physiology, Sports Medicine, Science Laboratories, Data Collection, Profiles, Fatigue (Biology), Active Learning, Muscular Strength, Kinetics, Comparative Analysis, Questionnaires, Psychomotor Skills, Learning Strategies, Student Attitudes, Positive Attitudes, Animals, Science Process Skills, Teaching Methods, Undergraduate Students, Laboratory Experiments
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Authoring Institution: N/A