Construction
The ArchFitt is built strong. Some of the tubes are seven (7) millimetres thick, but the use of aluminium means that the total weight is kept down to under 25 killograms. All pins and fixings are stainless steel and the whole frame is anodised, which means minimal corrosion and suitable for outdoor use. The foam padding is polypropylene which is durable and non-leaching. The ArchFitt also folds down to a height of 310 millimetres or 12 inches for easy storage and transportation.
TECHNICAL DETAILS
| Maximum height: | 1200 mm |
| Maximum width: | 810mm |
| Length of rails: | 1325mm |
Dimensions when folded for storage
| All pipes: | 6063-0 aluminium alloy |
| All plate: | 5083-0 aluminium alloy |
| All stainless-steel fixings: | grade 316 |
| Diameter of main stem: | 70mm x 4.8mm |
| Diameter rails: | 48mm x 4mm |
| Finish: | anodised 225 microns |
TECHNICAL FIELD
The ArchFitt apparatus has solved several problems. The conventional sit up performed on a flat surface has limited range of movement from a straight back on the ground to a hunched over posture at the end of the motion. This action can be uncomfortable on the tail-bone and the back is unsupported.
Sit ups performed on an exercise ball allow the back to be supported but due to the arching of the back and thighs being parallel to the torso puts undue strain on the lower back. Also the range of motion of the exercise is restricted as the users’ legs are not secured and the risk of overbalancing increases as the upper body extends through a full back arch.
The ArchFitt allows the user to exercise the full range of movement of the core muscle group. It also allows the user fully engage the gravitational force exerted on the upper body as a form of resistance. The ergonomically correct position of the thighs at right angles to the torso takes the strain off the lower back. Conventional sit ups and exercise ball sit ups can cause lower back strain.
STATEMENT OF TECHNICAL FEATURES
The apparatus is designed to hold the user in an elevated and variable position above an anti-burst stability ball. The adjustable leg supports locks the legs and pelvis in an ergonomically correct position above an anti-burst stability ball. This position allows the user to engage the core muscle groups through their full range of movement. The apparatus also allows the user to be fully supported throughout the entire motion. The apparatus allows the user to vary the motion of the exercise thus targeting specific muscle groups e.g. oblique’s.
