What powerlifting exericse is a typical example of extended length conditioning?
Extended length conditioning Extended length conditioning (ELC) also known as "end range conditioning" is a type of physical exercise that strengthens the body muscles through a wide range of flexible motions. ELC exercises are end range exercises or deep range exercises that contract the muscles from full stretch. A typical example of extended length conditioning is the stiffed legged deadlift which is meant for strengthening one of the three posterior thigh muscles referred to as "hamstring".
Sensory preconditioning Sensory preconditioning is a phenomenon discussed using terms common in classical conditioning. Procedurally, sensory preconditioning involves first identifying two different neutral stimuli (NS; see neutral stimulus) in relation to a specific unconditioned response (UR) of interest. For example, a light (NS1) and a tone (NS2) are common stimuli used in respondent conditioning examples involving salivation; they are not unconditioned stimuli (US) for salivation. Next, these two neutral stimuli are paired together repeatedly (e.g., the tone and light are presented simultaneously for a period of time, such as 10 seconds, multiple times). The pairing of these two NS constitutes sensory preconditioning. However, sensory preconditioning itself is usually followed by repeatedly pairing one of the NS (e.g., the light) with an US (e.g., lemon juice on the tongue to produce salivation) until the light alone elicits salivation. To accomplish this, delayed conditioning (see classical conditioning) is generally most effective. At this point the light is no longer classified as a NS in relation to salivation; it has become a conditioned stimulus (CS) for salivation. Salivation that occurs following the CS is called a conditioned response (CR). At this point, the second NS (i.e., the tone noted above) will also elicit salivation even though it has never been paired with the US. In short, sensory preconditioning in conjunction with classical conditioning resulted in the tone becoming a CS for salivation (CR).