At 80% 1RM, a mixed model ANOVA (Table 4) demonstrated a significant interaction between task and age on the number of repetitions that men were able to complete.
Only the main effect of task was significant [ F 2,90) = 4.35, P = 0.016], while neither the main effect of age group nor the interaction between task and age group was significant [all F < 1.0, all P > 0.4].
Behavioral results indicated similarly high levels of performance between tasks and age groups, while whole brain analysis revealed significant task-related differences in patterns of brain activity, but no significant effect of age or task-by-age interaction across the speech conditions.
Fig. 4 illustrates the linearity between observed retention duration (on the operant mobile and train tasks and the deferred imitation task) and age.
However, neither the higher-order interaction between the Task, Conflict and Age factors, F 1, 233)<1, nor any of the other interactions with the Task factor reached significance.
Multiple regression analyses were performed to examine the relationship between timed task performance and age, knee isometric strength, and peak aerobic capacity.
In addition, a covariate was included with the mean accuracy rates for each participant (collapsed across task, as the main effect of task or the interaction between task × age group was not significant) to prevent the possibility of age-dependent proficiency differences affecting the fMRI results.
Numerous factors increase cognitive effort (and decrease H), including task complexity, task novelty, and aging.
Negative associations were also found between the number of different tasks performed and age, seniority and list size.
Negative associations were found between the number of different tasks performed and age, years of practice as an FP and patient list size.
An ANOVA was performed between age and task type, age and response type, age and S-R compatibility type for the 5th percentile and 95th percentile values separately.
