Abstract:
:The fact that humans possess fast- and slow-twitch muscle in the ratio of ∼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.
journal_name
Adv Physiol Educjournal_title
Advances in physiology educationauthors
Head SI,Arber MBdoi
10.1152/advan.00155.2012subject
Has Abstractpub_date
2013-12-01 00:00:00pages
405-14issue
4eissn
1043-4046issn
1522-1229pii
37/4/405journal_volume
37pub_type
杂志文章abstract::Student self-assessment using computer-based quizzes has been shown to increase subject memory and engagement. Some types of self-assessment quizzes can be associated with a dilemma between 1) medical students who want the self-assessment quiz to be clearly related to upcoming summative assessments or curated by the e...
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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journal_title:Advances in physiology education
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