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Fatiguing Joint Angle Does Not Influence Torque And Neuromuscular Responses Following Sustained, Isometric Forearm Flexion Tasks Anchored To Perceptual Intensity In Men, Dolores G. Ortega, Terry J. Housh, Robert W. Smith, Jocelyn E. Arnett, Tyler J. Neltner, John Paul V. Anders, Richard J. Schmidt, Glen O. Johnson

Department of Nutrition and Health Sciences: Faculty Publications

This study examined the effects of joint angle (JA) on maximal voluntary isometric contraction (MVIC) and neuromuscular responses following fatiguing tasks anchored to RPE. Nine men (mean ± SD: age = 20.7 ± 1.2 yrs) performed forearm flexion MVICs at elbow JAs of 75^o and 125^o before and after sustained, isometric forearm flexion tasks to failure at fatiguing joint angles (FJA) of 75^o and 125^o anchored to RPE = 8. The amplitude and frequency of the electromyographic and mechanomyographic signals were recorded. Neuromuscular efficiency was calculated by dividing normalized torque by normalized electromyographic amplitude. A dependent …

Fatiguing Joint Angle Does Not Influence Torque And Neuromuscular Responses Following Sustained, Isometric Forearm Flexion Tasks Anchored To Perceptual Intensity In Men, Dolores G. Ortega, Terry J. Housh, Robert Smith, Jocelyn E. Arnett, Tyler J. Neltner, John Paul V. Anders, Richard J. Schmidt, Glen O. Johnson

Department of Nutrition and Health Sciences: Faculty Publications

This study examined the effects of joint angle (JA) on maximal voluntary isometric contraction (MVIC) and neuromuscular responses following fatiguing tasks anchored to RPE. Nine men (mean ± SD: age = 20.7 ± 1.2 yrs) performed forearm flexion MVICs at elbow JAs of 75^o and 125^o before and after sustained, isometric forearm flexion tasks to failure at fatiguing joint angles (FJA) of 75^o and 125^o anchored to RPE = 8. The amplitude and frequency of the electromyographic and mechanomyographic signals were recorded. Neuromuscular efficiency was calculated by dividing normalized torque by normalized electromyographic amplitude. A dependent …

Performance Fatigability And Neuromuscular Responses Are Not Joint Angle Specific Following A Sustained Isometric Forearm Flexion Task Anchored To A High Perceptual Intensity In Women, 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

Department of Nutrition and Health Sciences: Faculty Publications

Objectives: To examine the effects of joint angle (JA) on maximal voluntary isometric contractions (MVIC) and neuromuscular responses following a sustained, isometric forearm flexion task anchored to a rating of perceived exertion (RPE) of 8 (RPE=8). Methods: Nine women (age: 20.7±2.9 yrs; height: 168.8±7.2 cm; body mass: 66.3±6.8 kg) performed 2,3s forearm flexion MVICs at JAs of 75°, 100°, and 125° prior to and following a sustained, isometric forearm flexion task anchored to RPE=8 to task failure (torque reduced to zero) at JA100. Electromyographic (EMG) and mechanomyographic (MMG) signals were recorded from the biceps brachii. Results: The …

The Effects Of Anchor Schemes On Performance Fatigability, Neuromuscular Responses And The Perceived Sensations That Contributed To Task Termination, Robert Smith, Terry J. Housh, Jocelyn E. Arnett, John Paul V. Anders, Tyler J. Neltner, Dolores G. Ortega, Richard J. Schmidt, Glen O. Johnson

Department of Nutrition and Health Sciences: Faculty Publications

The present study examined the effect of anchor schemes on the time to task failure (TTF), performance fatigability, neuromuscular responses, and the perceived sensations that contributed to task termination following the sustained, isometric forearm flexion tasks. Eight women completed sustained, isometric forearm flexion tasks anchored to RPE = 8 (RPEFT) and the torque (TRQFT) that corresponded to RPE = 8. The subjects performed pre-test and post-test maximal isometric contractions to quantify performance fatigability and changes in electromyographic amplitude (EMG AMP) and neuromuscular efficiency (NME). In addition, the subjects completed a post-test questionnaire (PTQ) to quantify the contributions of perceived sensations …

Utilizing The Rpe‑Clamp Model To Examine Interactions Among Factors Associated With Perceived Fatigability And Performance Fatigability In Women And Men, Robert W. Smith, Terry J. Housh, Jocelyn E. Arnett, John Paul V. Anders, Tyler J. Neltner, Dolores G. Ortega, Richard J. Schmidt, Glen O. Johnson

Department of Nutrition and Health Sciences: Faculty Publications

Purpose The purpose of the present study was to examine the interactions between perceived fatigability and performance fatigability in women and men by utilizing the RPE-Clamp model to assess the fatigue-induced effects of a sustained, isometric forearm flexion task anchored to RPE = 8 on time to task failure (TTF), torque, and neuromuscular responses.

Methods Twenty adults (10 men and 10 women) performed two, 3 s forearm flexion maximal voluntary isometric contractions (MVICs) followed by a sustained, isometric forearm flexion task anchored to RPE = 8 using the OMNI-RES (0–10) scale at an elbow joint angle of 100°. Electromyographic amplitude …