The Effects Of Neururomuscular Factors And Trengths

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The first mechanism is neuromuscular factors, the loss of neural input to the muscles is ongoing and a lifelong process that is irreversible. When the body loses motor units that innervate several muscle fibers, the neurons that survived attempt to “adopt” muscle fibers. The lower number of motor units functional means the individual has decreased strength and muscle atrophy. The vastus lateralis in 43 male cadavers aged 15 to 83, this study showed total number of muscle fibers was reduced by 50% between the age of 20 and 80(Willardson, (2004). The crosssectional area showed there was higher loss of fast twitch type II muscles compared to slowtwitch type I muscle fibers. The individual 's experience limited capacity to exercise
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This study shows the effect of short term resistance exercise in increasing muscle protein synthesis.
The same study was repeated using the same resistance training program but in a
program with physically frail 76 to 92 year old men and women. Results displayed increased muscle protein synthesis in vastus lateralis and increased knee extensor torque production. The females showed increased isokinetic strength by 6% and the men increased isometric strength by 22%. This long term study is significant because frail individuals gain benefits participating in resistance training safely. On a larger scale, the elderly population can have reduced risk to disability due to resistance training.
Along with resistance training, the benefits of power training can improve functional ability in older adults. The capacity to produce large forces sustainable over a short time depends on having high muscle power. One major benefit of muscular power is increased reactive ability, which translates to decreases of injury by falls. A study designed to assess the effectiveness of resistance training in improving muscle power had 25 adults aged
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Higher training intensities was a predictor that represents a greater level of absolute and relative improvements for fullbody strength capacity.
The volume of training is the total number of performance sets or resistance exercises that is a predictor of increased lean mass (Peterson et al,(2011).
Clinical practitioners can manipulate the amount of exercise prescribed by altering the total number of exercises, the number of sets performed each exercise and the frequency of training sessions (Peterson et al,(2011). Clinicians can adapt the session to individual demands and capacity for adaptable training volume that can potentially improve longterm adherence of exercise session. Considering the age of the population who has other health conditions, the older individuals must participate in exercise that ensure safety and medical clearance in supervised environment for beginners. The older adults can start with low dosage of 12 times per week to gain familiarization, and then gradually increase in training volumes and intensity to gain improvements in muscle hypertrophy and strength.

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