Muscular performances at the ankle joint in young and elderly men.

6533b81ffe1ef96bd127871a

RESEARCH PRODUCT

Muscular performances at the ankle joint in young and elderly men.

Jacques Van Hoecke Alain Martin Emilie Simoneau

subject

Male Aging MESH: Range of Motion Articular MESH : Ankle Joint [SDV.MHEP.PHY] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]MESH : Electric Stimulation MESH: Muscle Contraction MESH : Muscle Weakness MESH : Aged MESH: Evoked Potentials Motor Isometric exercise Electromyography MESH : Evoked Potentials Motor 0302 clinical medicine MESH: Ankle Joint MESH: Aging MESH: Isometric Contraction Range of Motion Articular Young adult MESH : Muscle Skeletal 10. No inequality MESH: Aged MESH: Muscle Skeletal Muscle Weakness medicine.diagnostic_test [ SDV.MHEP.PHY ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]MESH: Muscle Weakness MESH: Electric Stimulation MESH : Adult Coactivation MESH: Leg medicine.anatomical_structure Linear relationship MESH : Electromyography Range of motion Muscle Contraction Adult medicine.medical_specialty MESH : Male MESH: Research Support Non-U.S. Gov MESH: Electromyography MESH : Isometric Contraction 03 medical and health sciences Physical medicine and rehabilitation Isometric Contraction medicine [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]Humans MESH : Research Support Non-U.S. Gov Muscle Skeletal Aged Leg MESH: Humans Electromyography business.industry MESH : Humans Mean age MESH: Adult 030229 sport sciences Evoked Potentials Motor Electric Stimulation MESH : Aging MESH: Male MESH : Range of Motion Articular Physical therapy MESH : Muscle Contraction Tibial Nerve Geriatrics and Gerontology Ankle MESH : Leg business human activities Ankle Joint 030217 neurology & neurosurgery

description

The effect of aging on mechanical and electromyographic characteristics of ankle joint muscles was investigated in 11 young (mean age 24 years) and 12 elderly (mean age 77 years) males. Maximal and submaximal isometric voluntary torques were measured during ankle plantarflexion and dorsiflexion. Electromyographic activities of triceps surae and tibialis anterior muscles were recorded. The elderly group developed equal maximal dorsiflexion torques (42 vs 45 N.m, p >.05), but in plantarflexion, the elderly group was weaker (80 vs 132 N.m, p <.001) and presented a decreased twitch amplitude (11 vs 16 N.m) and lower coactivation (8% vs 15%) than that of the young adults. We established a linear relationship between the percentage of coactivation and developed resultant torque. Our results showed that dorsiflexor muscles were not affected by aging, contrary to plantarflexors, in which the decline in torque was partly explained by changes intervening at the peripheral level.

year	journal	country	edition	language
2005-01-01

https://www.hal.inserm.fr/inserm-00080421