Elastic band versus PlyoDyne®
The use of elastic bands involves a non-quantified load. The load increases due to the increase in the range of movement, and this means that the load cannot be controlled by the range of movement. It is also impossible to know what the actual load is at a particular point in the exercise. The ability to control the strain on tissue, in particular, is important for the treatment of damaged tissue. Therefore, the use of elastic straps cannot be compared to the use of PlyoDyne® in terms of load determination.
Because the load of the elastic straps is only determined by the degree of elastic deformation, the load is almost impossible to determine, and therefore, very inaccurate.
PlyoDyne® is able to monitor the weight in 25 g increments, and therefore, the progression data, or the lack thereof, of a patient can be identified quickly and unambiguously.
Elastic bands will change angles from angle to angle as they move from their point of connection, depending on the movement of the patient’s hands around the room, causing poor precision in movement. This significantly reduces the accuracy of clinicians’ ability to verify and correct motion patterns as needed.
In contrast, PlyoDyne® allows for a high degree of controlled and reproducible accurate motion.
The results of clinical trials with PlyoDyne® on, for example, 100 patients who perform a rehabilitation program will yield reproducible results. In other words, the resulting data will be consistent and valid.
In a similar group of 100 patients using Elastic bands, movements and load levels may be completely different, resulting in inconsistent research data which would have virtually no validity.