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- W2316451195 abstract "Older adults lose muscular strength as a result of aging as well as inactivity. Resistance training exercises need to be prescribed at an intensity level which results in true strength gains. PURPOSE: The purpose of this study was to examine whether high intensity (HI) lower extremity progressive resistance training (PRT) in older adults improves lower body muscular strength. METHODS: Seven community-dwelling active older adults (85 +/- 5 yrs) completed the study. The study used a one-group pretest-posttest quasi experimental design. The variable of interest was muscular strength and was measured by 5RM assessments to predict 1RM. The intervention was HI PRT for the lower extremities. Subjects performed HI (70% of predicted 1RM progressing to 80% predicted 1RM by week 3) PRT three times a week for 10 weeks using three exercises: leg press, knee extenstion and leg curl. RESULTS: Statistically significant improvements were observed in lower extremity strength in all three movements. The group mean predicted 1RM for leg press increased from 232 pounds to 272 pounds (F = 7.52, p =.002). The group mean predicted 1RM for the leg curl increased from 53 pounds to 74 pounds (F = 7.70, p =.005) Lastly, the group predicted 1RM for knee extension increased from 40 pounds to 63 pounds (F = 8.94, p =.004). A positive, statistically significant correlation was only observed between predicted 1RM leg press strength and compliance in intervention sessions (r =.80, p =.03). There were no injuries reported or casused directly as a result of the PRT protocol. CONCLUSIONS: The outcome of this study suggests that regular, ongoing compliance in a HI PRT program may result in positive strength gains in the very old adult population. High-intensity PRT was also found to be safe and sustainable with the population studied. Future studies are needed to replicate these observations with a larger subject population. IMPLICATIONS: Despite the existence of numerous studies in the past 20 years illustrating the benefits of HI resistance training (Fiatrone et al., 1994; Evans, 1999; Henwood et al., 2008), the prescription of PRT to produce true strength gains is lacking in contemporary practice. This study contributes to the body of knowledge promoting HI PRT with the very old population. No funding was provided for this study. FGCU IRB approval #S2009-46." @default.
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- W2316451195 date "2011-05-01" @default.
- W2316451195 modified "2023-09-28" @default.
- W2316451195 title "The Effects Of PRT on Strength of Individuals Older Than 80 Years of Age" @default.
- W2316451195 doi "https://doi.org/10.1249/01.mss.0000401419.57257.0c" @default.
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