Some peptide/ protein hormones (angiotensin II, basic fibroblast growth factor -2, parathyroid hormone-related protein) also interact with intracellular receptors located in the cytoplasm or nucleus by an intracrine mechanism.eptide hormones are produced by many different organs and tissues, however, including the heart (atrial-natriuretic peptide (ANP) or atrial natriuretic factor (ANF)) and pancreas (glucagon, insulin and somatostatin), the gastrointestinal tract (cholecystokinin, gastrin), and adipose tissue stores (leptin).
Foot-and-Ankle Group. While your core muscles control ski-specific balance, your foot-and-ankle muscle group takes responsibility for the edging, pressure and rotational movements used in skiing. Your feet have intrinsic and extrinsic muscles.
You may decide to jump with your feet either close together or in a wide stance, however always take off and land with both feet. Look at increasing the amount of time you perform this ski exercise for, aim for a minimum of 20 - 30 seconds with a similiar amount of rest time before you repeat. As your fitness improves, increase the length of time to 30 - 60 seconds maximum, before you rest and stretch your legs.