ラットの自発的回転輪走行に及ぼす体重制限の効果

書誌事項

タイトル別名
  • Effect of body weight reduction on spontaneous wheel running in rats
  • ラット ノ ジハツテキ カイテン リン ソウコウ ニ オヨボス タイジュウ セイゲン ノ コウカ

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説明

Twenty-nine Wistar rats were tested for their spontaneous wheel running activity in daily 1-h sessions first under a free-feeding condition for 7 days, next with body weights decreased to 85% of their free-feeding weights. In the free-feeding phase, the number of wheel turns did not increase over the phase. In the 85%-body-weight phase, the number of wheel turns increased over the phase. In contrast, the number of wheel turns per 3 minutes decreased from the start to the end of the session on day 1 and day 7 of both phases. And, the number of wheel turns in the 85%-body-weight phase was greater on day 7 than on day 1. Spontaneous wheel running can reinforce other operant responses and such self-reinforcing mechanisms could be more effective during the 85%-body-weight phase.

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