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. 2013 Aug 28;8(8):e71875. doi: 10.1371/journal.pone.0071875

Figure 2. Weight and grip strength changes across weeks of task performance.

Figure 2

(A) All rats gained weight across the 29 weeks. There were no significant differences in body weights between trained only (TR0 and TR24) or high repetition low force (HRLF) rats, compared to normal controls (NC) rats. (B) Maximum reflexive grip strength is shown for control rats (normal and food-restricted controls were combined as there were no significant differences between these groups), TR24 (TR+Rest; trained rats that rested after training for 24 weeks), and HRLF rats. The preferred reach limbs and the contralateral support limbs were analyzed separately in HRLF rats. The week 0 time point of each group is after the training period and before the HRLF task performance or the rest period. Symbols: *:p<0.05 and ***:p<0.001, compared to age-matched control rats; aa: p<0.01 and aaa:p<0.001, compared to age-matched TR24 rats; b: p<0.05, compared to the support limb of HRLF rats.