They report that the highest muscle activity was displayed in the frontal plane at 60 degrees of shoulder abduction (90.5 %), while overall
muscle activity tended to be greater at all planes of motion at 60 degrees.
Further,
muscle activity tended to be similar between planes of motion at the same shoulder elevation.
Rectus abdominis
muscle activity tended to be greater in the standing barbell overhead press compared to the front and back squat with the same absolute load.
Erector spinae
muscle activity tended to be highest in the side plank compared to the other exercises.
The researchers report that middle trapezius
muscle activity tended to be greater during the seated row with retraction but was not statistically different compared to the seated row without retraction.
Not exact matches
But individuals with COPD
tend to lose slow - twitch
muscles, which are used for endurance
activities as well.
therefore, the obvious point of maximum loading becomes the point at which the
muscle is maximally shortened, which is not where we
tend to use our
muscles to perform functional
activities; with that in mind, you may wonder just how valuable stretch cord training is over the long term.
The lateral gastrocnemius
tended to display greater
muscle activity with the knee extended, but was not significant.
The eccentric component of muscular
activity leads to much greater
muscle damage / homeostatic disruption than the concentric aspect (which, just as an aside, might be why swimming doesn't
tend to lead to significant soreness or conspicuous
muscle development).
These data indicates that greater deltoid
muscle activity is displayed with bench angles above 28 degrees compared with less steep bench angles, although using a narrow grip
tends to reduce this effect.
In contrast, sleep studies of patients with central sleep apnea
tend to show decreased
activity in chest
muscles, which can lead to periods of slowed or no breathing.