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The Effects of 6-weeks of Resistance Training on the Neuromuscular Fatigue Threshold in Older Adults
| Title: | The Effects of 6-weeks of Resistance Training on the Neuromuscular Fatigue Threshold in Older Adults. |
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| Name(s): |
Emerson, Nadia, Author Stout, Jeffrey, Committee Chair Hoffman, Jay, Committee Member Fragala, Maren, Committee Member , Committee Member University of Central Florida, Degree Grantor |
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| Type of Resource: | text | |
| Date Issued: | 2013 | |
| Publisher: | University of Central Florida | |
| Language(s): | English | |
| Abstract/Description: | Age-related deficits in muscle mass, strength, and function place an increased burden of work on existing skeletal muscle and may lead to early onset of neuromuscular fatigue (NMF) during activities of daily living. Resistance exercise (RE) is the proven method for improving neuromuscular function in healthy older adults. PURPOSE: To investigate the effects of 6 weeks of RE on the NMF threshold as well as strength and functional performance in older adults. METHODS: Twenty-four older adults were randomly assigned to 6 weeks of RE (EXE; n = 12; age 72 (&)#177; 6.3 y; BMI 28.4 kg/m2) or control (CONT; n = 12; age 70.3 (&)#177; 5.6 y; BMI 27.6 kg/m2). Body fat percent (BF%), lean mass (LM), and fat mass (FM) were measured using DEXA and participants performed a discontinuous cycle ergometer test, physical working capacity at fatigue threshold (PWCFT), to determine the onset of NMF. Functional performance was assessed by time to complete 5 chair rises (CHAIR) and walk an 8-foot course (WALK). Lower body strength was assessed by predicted 1-RM leg extension (1RM). Two-way Analysis of Variance (ANOVA; time [PRE, POST] x group [EXE and CONT]) and magnitude based inferences were used to compare dependent variables. RESULTS: RE significantly increased 1RM (35%; p = 0.001) and CHAIR (20%; p = 0.047). RE had a likely beneficial effect on WALK (15%) and a possibly beneficial effect on PWCFT (14%). There were no significant changes to LM or FM, however, women in EXE significantly decreased BF% (p = 0.020). CONCLUSION: Results suggest that RE improves measures of strength and functional performance and possibly the onset of NMF in older adults. | |
| Identifier: | CFE0004679 (IID), ucf:49876 (fedora) | |
| Note(s): |
2013-05-01 M.S. Education, Child, Family and Community Sciences Masters This record was generated from author submitted information. |
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| Subject(s): | Aging -- Physical Activity -- Sarcopenia -- Exercise Physiology -- Neuromuscular Fatigue | |
| Persistent Link to This Record: | http://purl.flvc.org/ucf/fd/CFE0004679 | |
| Restrictions on Access: | public 2013-05-15 | |
| Host Institution: | UCF |
