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PhD candidate and lecturer at the Center for Human Movement Sciences, University of Groningen. My PhD research focuses on the functional significance of eccentric muscle function during walking in older age. I received my university teaching certificate (BKO) in May 2020.
A joint moment also causes motion at other joints of the body. This joint coupling-perspective allows more insight into two age-related phenomena during gait. First, whether increased hip kinetic output compensates for decreased ankle kinetic output during positive joint work. Second, whether preserved joint kinetic patterns during negative joint w...
Introduction: Advanced age brings a distal-to-proximal redistribution of positive joint work during walking that is relevant to walking performance and economy. It is unclear whether negative joint work is similarly redistributed in old age. Negative work can affect positive work through elastic energy return in gait. We determined the effects of...
Introduction When walking at a similar habitual speed, older compared with younger adults perform less positive (i.e., concentric) ankle work and more positive hip work, a phenomenon known as the distal-to-proximal (DP) shift of concentric muscle function. Because the magnitude and rate at which negative (i.e., eccentric) work is performed can a...
Background: Old referenced to young adults show a relative maintenance of maximal eccentric (RELM) compared to concentric muscle torque: ∼76 and ∼59%, respectively. However, it is unknown if RELM affords functional benefits in old adults. Objective: We examined if there is specificity between the two types of peak quadriceps torque (i.e., concen...
I have looked into classic articles (e.g. Dempster, 1955; Zatsiorsky (1983)...), but they only present equations to calculate segment weight from total body weight. I am curious if there is a way to calculate mass of an individual muscle from anthropometric data, for example total body weight, forearm length or circumference.