fatigue index


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fatigue index

The difference between the muscle power generated during peak exertion and the power that can be generated after repeated loading and unloading of the muscle.
See also: index
References in periodicals archive ?
Significant differences in peak power and relative peak power (lower body WAnT), as well as mean, relative mean power, and fatigue index (upper body WAnT), are mainly associated with different training loads implemented on particular instruments.
PD Correlation MFI MVC Speed r p r p r p CFI -0.24 0.25 GFI -0.23 0.27 PFI -0.13 0.52 VA 0.56 <0.01 * -0.07 0.73 TW 0.74 <0.01 * 0.28 0.19 MVC 0.16 0.45 HC Correlation MFI MVC Speed r p r p r p CFI 0.17 0.42 GFI -0.02 0.92 PFI -0.06 0.76 VA 0.38 0.06 0 0.99 TW 0.71 <0.01 * 0.18 0.40 MVC -0.14 0.51 PD, Parkinson's disease; HC, healthy control; MFI, Multidimensional Fatigue Inventory; CFI, central fatigue index; PFI, peripheral fatigue index; GFI, general fatigue index; VA, activation level; TW, twitch force; MVC, maximum voluntary contraction.
Variable Mean [+ or -] SD Peak power (W) 614.9 [+ or -] 122.9 Mean power (W) 462.3 [+ or -] 88.0 Fatigue index (%) 24.7 [+ or -] 4.6
Abbreviations: CFI = Central Fatigue Index, CNS = central nervous system, EDSS = Expanded Disability Status Scale, EMG = electromyography, FES = functional electrical stimulation, FI = General Fatigue Index, GEE = generalized estimating equations, ITT = interpolated twitch technique, MFIS = Modified Fatigue Impact Scale, MS = multiple sclerosis, MVC = maximum voluntary contraction, PFI = Peripheral Fatigue Index, T1 = resting twitch force, T2 = superimposed twitch force, VA = voluntary activation level.
The peak torque and fatigue index of the hip flexors, hamstrings, squat jump, counter jump, heart rate, and blood pressure of the subjects were determined before and after 10 km of running under two different conditions: (a) without the use of Compression Stockings (WCS) and with the use of CS.
have proposed a new fatigue index based on the continuous wavelet transform (CWT), named [I.sub.CWT], and have compared it to other fatigue indices from literature in terms of their sensitivity to noise.
The results of this study revealed that (i) AR combined with SS exercise more effectively enhanced agility than did AR combined with DS exercise; (ii) AR combined with SS or DS more effectively increased flexibility than AR alone; (iii) AR combined with SS led to a reduction in relative average power, and relative maximum power, however no significant effect on minimum power was detected; (iv) the fatigue index was greater following "AR" and "AR combined with DS" than following "ARcombined with SS".
Were recorded as the RAST anaerobic parameters: maximum power (Pmax: high power among six sprints), mean power (MP: average among the powers of the six sprints), minimum power (Pmin: low power among 6 efforts), maximum power per weight (Pmax=W/kg), Total time (TT: The summation of time of 6 efforts), and indicator of power decrease (fatigue index: FI): FI (W.s-1) = (maximum power--minimum power/TT).
Nevertheless, the Colombian wrestlers fatigue index, which represents the ability to maintain a high peak power output, was similar to that reported for the United States freestyle wrestling team (mean, 31.6% [+ or -] 9.6%) in the WAnT (14).
Twenty seconds after the cessation of the fatigue protocol a final MVC was performed to allow the calculation of the fatigue index:
Variables measured included Maximum Power Output, Mean Power Output, , Minimum Power Output and Fatigue Index. All power output measurements are based on 5-sec.