The purpose of the seat bones in a normal sitting position is to accept body weight. This also occurs during cycling. The red areas (see diagram) can withstand heavy pressure.
The perineum (green area) and the pelvic bones are the contact areas for sitting positions during sport activities.
The far reaching network of nerves and blood streams, starting in the perineum, stretch from the anus via the genitalia to the upper pubic bone arch. They stretch beyond the pubic bones on the side. These can easily accept weight. However, a pressure reduction is required. Uniform pressure reduction for the perineum area and the pubic bones is achieved by the lowered saddle nose; a step saddle principle developed by SQlab.
The red areas mark the seat bones, which can take heavy pressure.
The yellow areas should already be relieved: the green area must be free of pressure.
This is a perfect pressure measurement image of a step saddle with the highest pressure leveled at the seat bones, strongly reduced pressure at the pubic bones, almost free of pressure in the middle of the perineum area and the pubic bone arch.
Pressure measurement image: Film with sensors will be placed over the saddle. The resulting pressure will be measured with approximately 100 sensors as soon as the rider sits on the saddle. The measurements can be executed in the laboratory on a trainer or can be executed dynamically during a bike ride with the data sent wirelessly to a PC. The pressure distribution will be displayed in color: blue means little pressure. The pressure increases from turquoise/green/yellow/orange to red. The pressure measurement image displayed was measured for a male with a weight of 75 kg and body height of 180 cm with an average seat bone distance. The sitting position of app. 30° was between sporting and moderate.
The Saddle
