Effect of Aging on Tongue Protrusion Forces in Rats

  title={Effect of Aging on Tongue Protrusion Forces in Rats},
  author={Hiromi Nagai and John A. Russell and Michelle A. Jackson and Nadine P. Connor},
The purpose of this study was to ascertain the effect of aging on muscle contractile properties associated with tongue protrusion in a rat model. Fischer 344/Brown Norway hybrid rats, ten young (9 months old) and ten old (32 months old), were used to measure protrusive contractile properties. Results showed a significant reduction in tetanic forces in the old animals. The following measures of muscle contraction were not different between age groups: mean twitch contraction force, twitch… CONTINUE READING

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Effects of Aging on Swallowing

  • JA Robbins, NP Connor, S Barczi
  • 2006
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