Deformation: Intensity, Method and Recovery guidelines
I’ve spent most of the day digging for info, and came across an interesting (but badly composed) article on collagen deformation. It’s very late here so I’ll just write a few notes for now. But the take home message for the high intensity guys is taking adequate time off between sessions depending on the nature of the excercise, and depending on what part of the healing phase the tissues are in. I’ve listed some of the stress amounts listed below, while being high, are withing the realms of hangers and stretchers here.
You can get the full article here: http://www.sahs.utmb.edu/programs/p…hrx/ROM2000.doc
The stress is divided into four bands which are defined very roughly as follows:
A <80N (<18lbs)
B 80-180N (18-40lbs)
C 180-280N (40-63lbs)
D >280N (>63lbs)
From these four bands, they have four types of therapy intensity/duration which are listed below with some key points:
Area S1: defined as all of band A
Stimulates fibrocytes to maintain length; until the first slight feeling of stretch. If held for a few minutes the feeling of stretch goes away (accommodates). If sustained for 20 – 30 minutes will signal fibrocytes to remodel tissue longer (sustained low load stretch). Very effective at signaling fibroblasts to remodel collagen in late inflammatory/ early proliferative phase.
Exercise: Daily - eg. ADS
Area S2: defined as lower half of band B
The elastic range actual stretching; some fibers slip, some bonds break, some fibers denature.
If sustained for 20 – 30 minutes will signal fibrocytes to remodel tissue longer (sustained low load stretch) but is difficult to tolerate for 20-30 minutes.
Exercise: Needs at least one day rest between bouts. eg. Hanging/Stretching
Area S3: defined as upper part of band B and small part of band C
Works in the elastic range and a bit of the plastic range; significant stretching; many fibers slip, bonds break, some fibers denature. Stimulates fibrocytes to remodel tissue longer with time. Painful stretch, hard tolerate.
Exercise: Needs at least one day rest between bouts(!?!). eg. Possibly stretching, though a little on the extreme side for most.
Area S4: defined as middle of band C
Not practiced by physical therapists (occasionally by surgeons with anesthesia or unconscious patients!)
Excercise: N/A to us