Outcome measures include stride related measures such as mean and coefficient of variation of stride time, and dynamic measures regarding the magnitude, smoothness, predictability and local stability of trunk accelerations.
Coefficient of variation of stride time, which is a measure of STV, was recorded while usual walking using SMTEC® footswitches system.
In addition, coefficients of variation (CV) for stride time, stride length, stride velocity, and stride width will be calculated according to the following formula: [CV = (SD / mean) × 100] [ 69].
Detrended fluctuation analysis of stride length and stride time revealed that statistical persistence was unaffected by moderate muscle fatigue.
He was immediately into his stride, hitting his ground strokes with confidence and warming an appreciative crowd, who were shivering on a chilly and overcast afternoon, with his customary mix of drop shots, lobs and subtle variations of pace.
Since stride length determines many other locomotor parameters, including speed and energy costs (Gray, 1944; Jones and Lindstedt, 1993; Pontzer, 2007a), understanding the underlying causes of stride length variation is a key to determining how and why animals walk the way they do.
The standard deviation and coefficient of variation of the right foot stride interval both are correlated with 10 of the features of the CBFV (with 9 of the correlated being the same for the left and right foot).
The awkward pauses in the first minute are just a tease, as Edis sidles into a stride-piano variation of the kind Jools Holland essays when backing some octogenarian soul ledge on Later… Then it gets complicated in a way Jools would never countenance, more like a Jarrett or Petrucciani encore.
The "style" variation they incorporate in their model thanks to multiple regression is the quantitative variations of speed and stride length.
SRBDs: Sleep-related breathing disorders; OSA: Obstructive sleep apnea; CSA: Central sleep apnea; US: United-States; STV: Stride-to-stride variability of stride time; AHI: Apnea + hypopnea index; CoV: Coefficient of variation; BMI: Body mass index; CI: Confidence interval.
However, given our results, we suggest that, in general, more distal COM positions seem to drive variation in stride lengths across taxa, and the evolution of stride length variation is likely tied to morphological variation.
