the cyclist 41 operating a bicycle 25 in a forward leaning standing posture while the concave waist support 74 is in a forward and elevated position in the drawing of fig7 being an anterior elevation view is depicted the anterior view of the human torso 53 on which torso 53 is indicated the three principal areas of supporting contact made on the torso 53 by the concave waist support 74 of the anterior support device 71 the lateral support pads 77 make contact with the iliac crests 51 being the crests of the iliac bones 51 of the cyclist 39 s 41 hips 42 the lateral support pads 77 are formed concavely to make a fitted support around the convex protuberances of the iliac crests 51 the lateral pads 77 also curve around the medial faces of the iliac crests 51 to provide support in the areas between the iliac crests 51 and the lateral edges of the rectus abdominis muscle 54 the lateral pads 77 are further formed to make clearance with increased concavity on the inferior edges of the lateral pads 77 for the muscles of the upper legs 55 where these muscles attach at the iliac crests 51 and also where these leg muscles 55 attach to the inguinal ligaments 40 which ligaments 40 extend from the iliac crests 51 to the pubic symphysis 45 the lateral pads 77 are the primary surfaces of anterior support for the seating system 21 a secondary surface of support is the medial support pad 78 of the anterior support device 71 the lower abdomen 49 has a more limited capacity to support body weight because of the sensitive digestive and reproductive organs located in the abdomen 49 the pubic symphysis 45 is also sensitive.