The purpose of this study was to examine whether high intensity (HI), lower extremity (LE) progressive resistance training (PRT) in older adults improves lower body muscular strength. The study used a one-group, pre-test, post-test quasi-experimental design. The variable of interest (dependent) was muscular strength and was measured by five repetition maximum (5RMs) assessments. The intervention (independent variable) was high-intensity PRT for the lower extremities. Subjects performed PRT three times a week for 10 weeks using three exercises: leg press, leg extension, and leg curl. The subjects were seven balance-impaired, community-dwelling active older adults with a mean age of 85 (range 80–90 years of age) from a senior living community. Statistically significant improvements in lower extremity strength were observed in each of three movements (p=<.05). A moderate to strong positive correlation was also observed between the post-treatment mean predicted one repetition maximums (1RMs) for each of the lower extremity exercises and subject attendance. The outcome of this study suggests participating in a HI PRT program may result in positive strength gains in the very old adult population. High-intensity PRT in this study was found to be safe and sustainable with the population studied. Future studies are needed to replicate these observations and to determine if high-intensity PRT improves functional indices in older adults.
|Keywords:||Exercise, High Intensity Training, Resistance Training, Very Old|
Director of Exercise Science Program and Assistant Professor of Physical Therapy and Human Performance, College of Health Professions, Florida Gulf Coast University, Fort Myers, FL, USA
Assistant Professor, College of Health Professions, Florida Gulf Coast University, Fort Myers, FL, USA
Physcial Therapy Student, Florida Gulf Coast University, FL, USA