INSERM UMR1093-CAPS, Université de Bourgogne, UFR Des Sciences du Sport, UFR STAPS, Campus Universitaire, BP 27877, F-21000, Dijon, France.
Published: November 2024
AI Article Synopsis
Article Abstract
Purpose: Neuromuscular fatigability is task-dependent, but the influence of the contraction pattern on neuromuscular fatigability is largely unknown. Therefore, the present study aims to investigate if neuromuscular fatigability is affected by the contraction pattern of exhausting isometric exercises.
Methods: Thirteen participants sustained a plantar flexors MVC for 1 min (MVC) before and after exhausting exercises designed to produce a similar mean torque (30% MVC), and following a 10-min rest period. Exercises consisted of intermittent (INT), continuous (CON) or variable (continuous contraction alternating between moderate and low intensity, VAR) contractions performed until task failure.
Results: The INT resulted in greater exercise duration and torque-time integral than CON and VAR. MVC similarly decreased after all exercises due to neural and muscular impairments. The torque loss during the MVC increased after all exercises to a similar extent, mainly because of neural alterations. Contrary to MVC, the torque loss during the MVC returned to baseline value after the recovery period.
Conclusion: INT, CON and VAR exercises, performed with identical mean torque and until exhaustion, led to a similar neuromuscular fatigability. When the mean torque is matched among exercises, the contraction pattern does not influence the extent of neuromuscular fatigability, assessed through the maximal torque production and sustainability. The present findings are crucial to consider for the management of neuromuscular fatigability in physical conditioning in both athletes and patients.
Introduction: Fatigue and gait speed are established determinants of fall risk in patients with neurological disorders. However, data on adults with spinal muscular atrophy (SMA) is limited. The aim of this pilot study was to investigate falls and risk factors in adults with SMA.
Myasthenia gravis (MG) is an autoimmune disorder causing muscle weakness due to disrupted acetylcholine receptors, complicating management during surgeries.
A 66-year-old male with severe MG and health complications underwent successful open sigmoid colectomy using epidural anesthesia instead of traditional methods.
The case suggests that neuraxial anesthesia could be a safer alternative for high-risk patients during colorectal surgeries, avoiding neuromuscular agents and intubation.
Introduction: Cerebral palsy (CP) presents a complex neurodevelopmental disorder with a spectrum of motor impairments stemming from early brain injury. Whereas CP is traditionally viewed as a non-progressive condition, emerging evidence suggests a progressive decline in mobility and function, particularly in adulthood. Despite the prevalence of self-reported age-related gait decline in adults with CP, objective evidence supporting this phenomenon remains limited.
Purpose: Neuromuscular fatigability is task-dependent, but the influence of the contraction pattern on neuromuscular fatigability is largely unknown. Therefore, the present study aims to investigate if neuromuscular fatigability is affected by the contraction pattern of exhausting isometric exercises.
Methods: Thirteen participants sustained a plantar flexors MVC for 1 min (MVC) before and after exhausting exercises designed to produce a similar mean torque (30% MVC), and following a 10-min rest period.
