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RESEARCH PRODUCT
Decreased motor unit firing rate and force control in older men
Janne AvelaPaavo V. KomiKaren SøgaardVesa LinnamoMika KanervoKallio Jounisubject
Soleus musclemedicine.medical_specialtyChemistryPhysical Therapy Sports Therapy and RehabilitationMuscle atrophyMotor unitPhysical medicine and rehabilitationMotor unit firing rateAgeingmedicinePhysical therapyOrthopedics and Sports Medicinemedicine.symptomBalance impairmentBalance (ability)Muscle forcedescription
Introduction Ageing is related to muscle atrophy that leads to decreases in muscle force. The largest changes are found in fast muscle fibres and fast force production, reducing the capability to recover from sudden balance disturbances. Also ageing-related decrease in force control has been found, as indicated by an increase in force fluctuations and motor unit (MU) firing variability (Galganski et al. 1993). Possibly due to differences in measurement protocols and muscles, the results concerning the effects of ageing on motor unit firing rate are, however, somewhat contradictory (for review, see Roos et al. 1997). The purpose of the present study was to investigate the age-related changes in the firing properties of the Soleus muscle, which has an important role in locomotion and balance.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 | Japanese Journal of Physical Fitness and Sports Medicine |