6533b837fe1ef96bd12a1edc

RESEARCH PRODUCT

Strength training in old age: adaptation of antagonist muscles at the ankle joint.

Alain MartinJacques Van HoeckeEmilie SimoneauMichelle M. Porter

subject

MaleMESH : Ankle Joint[SDV.MHEP.PHY] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]MESH : Electric StimulationPhysiologyMESH: Muscle ContractionMESH : AgedMESH: Physical FitnessIsometric exerciseElectromyographyMESH: Research Support Non-U.S. Gov'tMESH : Research Support Non-U.S. Gov't0302 clinical medicineTriceps surae muscleMESH: Ankle JointMESH : FemaleMESH : Muscle SkeletalMESH : Adaptation PhysiologicalMESH : AlgorithmsMESH: AgedMESH: Muscle SkeletalMESH: Middle Agedmedicine.diagnostic_test[ SDV.MHEP.PHY ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]MESH: Electric StimulationMiddle AgedAdaptation PhysiologicalCoactivationmedicine.anatomical_structureData Interpretation StatisticalMESH : ElectromyographyFemalemedicine.symptomMESH : Physical FitnessAlgorithmsMuscle ContractionMuscle contractionmedicine.medical_specialtyWeight LiftingStrength trainingMESH : MaleJoint stabilityMESH: AlgorithmsMESH: Electromyography03 medical and health sciencesCellular and Molecular NeurosciencePhysical medicine and rehabilitationPhysiology (medical)medicine[SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]HumansMESH : Middle AgedMESH : Data Interpretation StatisticalMuscle SkeletalAgedMESH: HumansElectromyographybusiness.industryMESH : Humans030229 sport sciencesMESH: Adaptation PhysiologicalElectric StimulationMESH: MalePhysical FitnessPhysical therapyMESH : Muscle ContractionNeurology (clinical)AnklebusinessMESH: Data Interpretation StatisticalMESH: FemaleAnkle Joint030217 neurology & neurosurgery

description

The purpose of this study was to determine whether strength training could reduce the deficit in plantarflexion (PF) maximal voluntary contraction (MVC) torque observed in previous studies in older subjects relative to young adults. Accordingly, the effects of a 6-month strength training program on the muscle and neural properties of the major muscle groups around the ankle were examined. PF and dorsiflexion (DF) isometric MVC torques were measured and surface electromyographic activity of the triceps surae and tibialis anterior muscles was recorded. The strength training program was very effective in improving strength in PF (+24.5%), and it thus reduced the DF-to-PF MVC torque ratio; in addition, it also induced gains in DF (+7.6%). Thus, there must be an improvement in ankle joint stability. In PF, gains were due particularly to a modification of the agonist neural drive; in DF, the gains appeared to be the consequence of a reduction in antagonist coactivation. Our findings indicate that the investigation of one muscle group should always be accompanied by examination of its antagonist muscle group.

10.1002/mus.20492https://www.hal.inserm.fr/inserm-00080419