Muscle active force-length curve explained by an electrophysical model of interfilament spacingRobert Rockenfeller aMichael Günther b cScott L. Hooper d
The latter muscle also has a steeper normalized passive length force curve and produces more active tetanic force per gram muscle (877 g/g for gastrocnemius versus 379 g/g for semimembranosus).No differences between the semimembranosus and gastrocnemius are found with respect to the passive ...
Instead, the in situ length or an arbitrary but clearly defined reference length should be used. We propose the usage of "length adaptation" to describe the phenomenon whereby the length-force curve of a muscle shifts along the length axis due to accommodation of the muscle at different ...
The dose for half maximal response (ED50) was determined by graphical estimation and by calculation from a best fit curve. For both NE and K+: 1) ED50 was lowest (most sensitive) at L for maximum active force (Lmax) and increased significantly as L decreased from Lmax; 2) ED50 at ...
This paper describes a method of evaluating α excitability using muscleforce-frequency curve (F-f curve). The F-f curve is measured as the relation between the frequency and torque when the human abductor digiti quinti muscle is driven by percutaneous stimuli. Here, the frequency can be varie...
The force-velocity curve extrapolates to zero velocity for isometric tension, but only for the tension at that one length. Very few efforts have been made to study the profiles of the curves throughout the range of lengths over which shortening takes place. In examining the length region, l...
A force-frequency curve was established by stimulating the muscles at different frequencies, ranging from 10–150 Hz, with a 2 min rest between each stimulation. Thereafter, muscle length and weight were measured to assess specific muscle force (N/cm2). To do so, a mathematical ...
Biomechanical models and simulations of musculoskeletal function rely on accurate muscle parameters, such as muscle masses and lines of action, to estimate force production potential and moment arms. These parameters are often obtained through destructiv
curve. Over time, that seems to determine how much muscle we gain from our training. The level of total tension is approximated very well by our training intensity. If you lift heavier weights, your muscles have to produce more force, which requires greater tension to generate. So the ...
Generated force was recorded and expressed as a percentage of the initial force (left). Insert represents area under curve (AUC) (right) (n = 7 mice per group). Data are presented as means ± S.E.M. Two way ANOVA withBonferroni’s post hoc test was used (left in i) and two...