Neuromuscular Junction
y-intercept
rise
coefficient
ergometry
ride
males
fatigue threshold test
slope coefficient
mean value
differences
mean time
cycle ergometry
curves
rate of rise
1993-10-01
rate
threshold
2022-09-02T15:47
min
lateralis
https://scigraph.springernature.com/explorer/license/
function
305-308
power output
bouts
threshold test
purpose
adult males
1993-10
work bouts
examination
electromyographic fatigue threshold
graph
investigation
article
activity
intraclass correlation
false
power curve
output
percentage
coefficient graphs
fatigue threshold
The purpose of this investigation was to examine times to exhaustion at various percentages of the electromyographic fatigue threshold (EMGFT). Eight adult males [mean (SD), 21 (1) years] volunteered for the investigation. EMGFT was derived by determining the rate of rise in the electrical activity of the vastus lateralis [using integrated electromyography (iEMG)] over time (iEMG slope) for four fatiguing power outputs during cycle ergometry. The four power outputs were then plotted as a function of the four iEMG slope coefficients. The y-intercept of the power output versus iEMG slope coefficient graph was defined as the EMGFT. The intraclass correlation for repeated EMGFT tests was R=0.65 (SEE=7 W) and there was no significant (P>0.05) difference between the mean (SD) values for test [260 (11) W] versus retest [262 (32) W]. Actual times to exhaustion were determined for work bouts at power outputs equal to 85, 100, 115, 130, and 145% of EMGFT. The mean (SD) times to exhaustion for these work bouts were 495 (231), 225 (72), 135 (35), 94 (17), and 72 (14) s, respectively. A power curve was derived using the mean power outputs and mean times to exhaustion from the five rides at various percentages of EMGFT. The power curve provided estimates of the power outputs which could be maintained for 30 and 60 min. There were significant (P<0.05) differences between the mean EMGFT (260 W) and the power outputs which could be maintained for 30 (151 W) and 60 (125 W) min. EMGFT overpredicted the estimated power outputs that could be maintained for 30 and 60 min by 42% and 52%, respectively.
electrical activity
articles
https://doi.org/10.1007/bf00357627
estimates
values
correlation
test
An examination of the electromyographic fatigue threshold test
time
mean power output
actual time
retest
vastus lateralis
exhaustion
Muscles
1432-1025
Springer Nature
1439-6319
European Journal of Applied Physiology
Neurosciences
10.1007/bf00357627
doi
Springer Nature - SN SciGraph project
Joan M.
Eckerson
Maximum Allowable Concentration
Pavlat
David J.
4
Exercise Test
Medical and Health Sciences
pub.1020833889
dimensions_id
Physical Exertion
Humans
Johnson
Glen O.
Human Performance Laboratory, University of Nebraska-Lincoln, NE 68588-0229, Lincoln, USA
Human Performance Laboratory, University of Nebraska-Lincoln, NE 68588-0229, Lincoln, USA
Adult
Schmidt
Richard J.
Male
Fatigue
Terry J.
Housh
67
Sensory Thresholds
pubmed_id
8299596
Electromyography