LE3 .A278 2018

2018

Fowles, Jonathon

Acadia University

Bachelor of Kinesiology

Honours

Kinesiology

Kinesiology

Aging is accompanied by a major loss in muscle mass due to sarcopenia, and a decline in aerobic and cognitive ability. Resistance training can prevent sarcopenia, improve muscle mass, and improve cognitive and aerobic functioning in older adults, thus improving quality of life and improving the ability to perform activities of daily living. Different types and arrangement of training variables create different anabolic responses and therefore, different adaptations. Workouts with higher amounts of volume typically create a larger anabolic response, although it is uncertain if this response is driven by intensity, or total work through the increase in the number of sets and repetitions. Even though there have been many studies reporting the anabolic response to these different training variables, there has not been a study, to our knowledge, reporting the effects of time under tension (TUT)on the anabolic responsein older adults. Our study examined the acute testosterone production to TUT during two training protocols. Testosterone was measured sing Salimetrics Passive Drool Collection aid and assay kit before and after exercise. Testosterone differences were analyzed using multiple paired t-tests. Differences were analyzed for main effects for training i.e. pre-post (n=32), for high and low TUT (n=16) and for each protocol (n=8). Statistical significance was accepted at p<0.05. Based on the findings of this study, incorporating longer tempos, up to a total of 6 seconds per repetition will increase the metabolic demand of the exercise, increasing total volume and thus creating a larger anabolic response that is related to greater muscle protein synthesis (MPS). Over time, greater MPS due to TUT, will create larger muscle mass adaptations while ensuring safety and adherence to training.

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https://scholar.acadiau.ca/islandora/object/theses:2635