Running on uneven ground: Leg adjustments to altered ground level
نویسندگان
چکیده
منابع مشابه
Skipping on uneven ground: trailing leg adjustments simplify control and enhance robustness
It is known that humans intentionally choose skipping in special situations, e.g. when descending stairs or when moving in environments with lower gravity than on Earth. Although those situations involve uneven locomotion, the dynamics of human skipping on uneven ground have not yet been addressed. To find the reasons that may motivate this gait, we combined experimental data on humans with num...
متن کاملRunning on uneven ground: leg adjustment to vertical steps and self-stability.
Human running is characterized by comparably simple whole-body dynamics. These dynamics can be modelled with a point mass bouncing on a spring leg. Theoretical studies using such spring-mass models predict that running can be self-stable. In simulations, this self-stability allows for running on uneven ground without paying attention to the ground irregularities. Whether humans actually use thi...
متن کاملLeg adjustments during running across visible and camouflaged incidental changes in ground level.
During running in a natural environment, humans must routinely negotiate varied and unpredictable changes in ground level. To prevent a fall, changes in ground level, especially those that are invisible, require a quick response of the movement system within a short time. For 11 subjects we investigated two consecutive contacts during running across visible (drop of 0, 5 and 10 cm) and camoufla...
متن کاملSpring-legged Locomotion on Uneven Ground: a Control Approach to Keep the Running Speed Constant
We present a feedforward control for spring-legged systems in uneven terrain which keeps the running speed constant. The control uses the unique transformation between ground level and flight time to automatically adapt the system parameters during flight to the actual ground level without having to detect it. We further demonstrate how this control for constant speed running can simultaneously...
متن کاملEffects of altered sagittal trunk orientation on kinetic pattern in able-bodied walking on uneven ground
Studies of disturbed human locomotion often focus on the dynamics of the gait when either posture, movement or surface is perturbed. Yet, the interaction effects of variation of trunk posture and ground level on kinetic behaviour of able-bodied gait have not been explored. For 12 participants we investigated the kinetic behaviour, as well as velocity and contact time, across four steps includin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Human Movement Science
سال: 2010
ISSN: 0167-9457
DOI: 10.1016/j.humov.2010.04.007