The effects of endurance treadmill training and taper training on the actomyosin ATPace activity of rat soleus muscle was studied. Taper training was defined as a linear regression reduction of time of training by 5% per day after steady state training had been established. Thirty-two male Sprague-Dawley rats of the Wistar strain were randomly assigned to one of four groups: (SC) sedentary control, (RC) running control, (TI) 7 day taper trained, or (TII) 14 day taper trained. The steady state exercise protocol consisted of two hours of treadmill running up a 12(DEGREES) slope at 27.5 m/min. for 11 weeks. At the end of the 7-day taper phase, TI animals were running for only 65% of the time of RC animals. At the end of the 14-day taper phase, TII animals were running for only 30% of the time of RC animals. Biochemical analysis of the soleus actomyosin ATPase activity followed procedures set by Baldwin, Winder, and Holloszy (1975). Results indicated a statistically significant (p < 0.05) increase in Mg++ activated actomyosin ATPase activity for RC (42%), TI (43%), and TII (38%) compared with SC values. Both TI and TII exercise protocols provided enough stimulus to maintain an enhanced actomyosin ATPase activity, and values were not different from RC values. A taper effect was then defined as the maintenance of the previously adapted muscle actomyosin ATPase activity while greatly reducing the amount of exercise stimulus applied to that muscle. / Source: Dissertation Abstracts International, Volume: 43-12, Section: B, page: 3864. / Thesis (Ph.D.)--The Florida State University, 1983.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_75015 |
| Contributors | BELOWICH, DAVID LEO., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 79 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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