Figures index

From

Effects of Joint Angle on Inter- and Intra-individual Variability for Women During Isometric Fatiguing Tasks Anchored to a Perceptual Intensity

Jocelyn E. Arnett, Robert W. Smith, Tyler J. Neltner, John Paul V. Anders, Dolores G. Ortega, Terry J. Housh, Richard J. Schmidt, Glen O. Johnson

American Journal of Sports Science and Medicine. 2023, 11(1), 7-21 doi:10.12691/ajssm-11-1-2
  • Figure 1. (A) Initial torque values and torque values at 5% time to task failure (TTF) (collapsed across Joint Angle (JA): 75° and 125°). (B) EMG MPF initial values and values at 5% TTF at JA75 and JA125. (C) MMG MPF values at JA75 and JA125 (collapsed across Time: initial value and value at 5% TTF). (D) Neuromuscular Efficiency (NME) initial values and values at 5% TTF (collapsed across Joint Angle). (* (A) and (D) Initial values significantly (p < 0.05) greater than 5% TTF values. ** (B) Initial value significantly (p < 0.001) greater than 5% TTF value for JA75. *** (C) MMG MPF significantly (p = 0.049) greater at JA75 than JA125)
  • Figure 2. Time course of changes (mean ± SD) for the normalized neuromuscular and torque values (% of pre-test MVIC) for the sustained, isometric forearm flexion fatiguing task anchored to RPE = 8 at an elbow joint angle of 75°. (A) Electromyographic amplitude (EMG AMP), (B) Electromyographic mean power frequency (EMG MPF), (C) Mechanomyographic amplitude (MMG AMP), (D) Mechanomyographic mean power frequency (MMG MPF), (E) Torque
  • Figure 3. Time course of changes (mean ± SD) for the normalized neuromuscular and torque values (% of pre-test MVIC) for the sustained, isometric forearm flexion fatiguing task anchored to RPE = 8 at an elbow joint angle of 125°. (A) Electromyographic amplitude (EMG AMP), (B) Electromyographic mean power frequency (EMG MPF), (C) Mechanomyographic amplitude (MMG AMP), (D) Mechanomyographic mean power frequency (MMG MPF), (E) Torque
  • Figure 4. Time course of changes (mean ± SD) for neuromuscular efficiency (NME) during the sustained, isometric forearm flexion fatiguing tasks anchored to RPE = 8. NME was defined as normalized torque (% of pre-test MVIC) divided by normalized EMG AMP at each respective time point. (A) NME at an elbow joint angle of 75° (JA75), (B) NME at an elbow joint angle of 125° (JA125)