The resistance grows greater as our muscles actually grow weaker.
The constant tension they provide actually represents a disadvantage.
This occurs since the muscle fibers overlap optimally here.
Other positions feel easier only because of better leverage. Resistance bands stress our muscles further as the range of motion continues.
Resistance bands often allow exercises that so happen to act less effectively and can feel dangerous anyway. In some circumstances, an explosive athlete may benefit from learning acceleration to overcome heavy resistance.
This includes isolation meant to take place unloaded. Resistance bands are unnecessary but may help teach this concept.
In each training session, one arm did 3-5 sets of 10 maximal concentric actions on an accommodating resistance device (ARD), the other arm 3-5 sets of 8-12 coupled eccentric/concentric actions (repetitions) to volitional failure (8-12 RM) on a weight resistance device (WRD).
The average "intensity" (force of concentric actions) was approximately 1.25 times greater in ARD training, the average "volume" (number of actions x force of actions) 1.6 times greater in WRD training, and the time required to complete a training session the same for each.
Both types of training produced significant increases in a single maximum weight lift (1 RM on the WRD), in the peak force of a single maximal concentric action measured on the ARD and an isovelocity dynamometer, and in biceps, brachialis, and total elbow flexor cross-sectional area (CSA).
Biceps Type I and II fiber area did not change significantly.
They may want the exercise to feel hard throughout the full range of motion, despite this not working best for stimulation.
Muscles operate most strongly in the mid-range for any exercise.
The concept of accommodating resistance applies in powerlifting circles. Resistance bands used by powerlifters aim to overload the lockout portion of any lift.