The available evidence indicates that there may be substantial interindividual differences in ability to store and release elastic energy [216-218] and it has been suggested that fiber composition, gender and maturity are likely contributors to these differences [219].
The mesomorphic form transforms back into the crystalline α-form upon releasing the tension and elastic recovery is observed.
This study evaluated the capacity of the ITB to store and release elastic energy during running, at speeds ranging from 2 5 m/s, using a model that characterizes the three-dimensional musculoskeletal geometry of the human lower limb and the force length properties of the ITB, tensor fascia lata (TFL), and gluteus maximus (GMax).
These simulations show shear induced buckling and relaxation of the filaments, leading to the storage and release of elastic energy.
Unfortunately, there currently are no data available from which to quantify the relative energy cost of the two types of contractions nor has there been a method devised to differentiate true eccentric contractions from tendon stretching or to quantify the storage and release of elastic energy [13,14,209-212].
Upon unloading, the ES relaxed, indicating a release of elastic and viscoelastic strains.
A former Ph.D. student in Harvard's Graduate School of Arts and Sciences, Eng is the first author of two studies that examine how the iliotibial band stores and releases elastic energy to make walking and running more efficient.
They noted that several features that facilitate endurance running first appeared in H. habilis and H. erectus including shortened toes and feet and lengthened legs, whose various structures both stored and released elastic energy.
During unloading, the release of elastic strain and viscoelastic strain from the PM and the remaining viscous strain of the PM were all larger than those from the CM (Fig. 4C).
The analysis shows that strong interface segregation of austenite stabilizing elements (here Mn) and the release of elastic stresses from the host martensite can generally promote phase transformation at martensite grain boundaries.
