PostureMedic New Zealand - Tonic vs Phasic Muscles Poor posture arises for two main reasons: Tight Tonic Muscles — Your tonic muscles are responsible for holding your posture. They can constrict and
![More Than Muscle on Twitter: "DeLorme & Janda 'phasic' & tonic' muscles, they suggested phasic muscles got weaker with age & tonic ones shrunk! https://t.co/E75SGPeD9M" / Twitter More Than Muscle on Twitter: "DeLorme & Janda 'phasic' & tonic' muscles, they suggested phasic muscles got weaker with age & tonic ones shrunk! https://t.co/E75SGPeD9M" / Twitter](https://pbs.twimg.com/media/Co1JLPBWYAAEFwd.jpg)
More Than Muscle on Twitter: "DeLorme & Janda 'phasic' & tonic' muscles, they suggested phasic muscles got weaker with age & tonic ones shrunk! https://t.co/E75SGPeD9M" / Twitter
![PDF] Effects of muscle activity and number of resistance exercise repetitions on perceived exertion in tonic and phasic muscle of young Korean adults | Semantic Scholar PDF] Effects of muscle activity and number of resistance exercise repetitions on perceived exertion in tonic and phasic muscle of young Korean adults | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/7803e4b89cdfa175bba7e27f9c6938c18da4fd5d/2-Table1-1.png)