The IGrip Isometric Fitness Device depicted in the video above is heralded as the “first isometric training device with an electronic display”.
When shown in use, the device is shown being used in a way that’s similar to IsoTonoMetrics or the Iso-Bow… i.e. with hands moving and upperbody movement accompanied by lunges, torso twisting, etc.
As usual though, these movements are not shown being done at a rate sufficient to develop a cardio-respiratory response. It’s an admission though that whole body work is essential and that most hand held exercise devices can’t (as yet) seem to replace the knee bend or lunge for quad engagement!