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Alright, thanks man.

Hi guys, This appears to be a fundamental concept in exercise science, so is my understanding of this correct? I take it, when hamstrings are tight, excessive pressure is placed on the antagonists which creates a muscular imbalance which excessively flexes the lumbar spine backwards, causing lordosis. This reduces the effectiveness of the lumbo-pelvic rhythm, as the range of pelvic motion in the anterior tilt decreases and the range of forwards lumbar motion increases in order to compensate for this, which also means that lumbar motion occurs earlier during forward bending. In regards to the quadriceps, the opposite happens when they are tight, meaning that anterior tilt is increased and the lumbar spine is extended rather than flexed. Is this right, or have I got it all topsy-turvy?

Hi everyone! Great to be here, this being my first post I'll just briefly introduce myself - I'm a final-trimester Health Sciences/Arts student from Australia, and have recently started a unit on anatomy just as an elective to finish things off (my main areas are nutrition and health promotion). Now onto my question, here and there I see references to 'functional' and 'accessory' motions/actions. I have a vague idea that the latter term implies something auxillary to a main feature, but I am not sure exactly how to use the terms in an anatomical context. For example, in regards to articulations, what exactly (if any) would be 'functional' and 'accessory' motions of the glenohumeral joint, and in regards to muscles, what would be 'functional' and 'accessory' actions of the gluteus maximus? Thanks for your help!