O impacto da demanda física e cognitiva sobre o controle cognitivo e sua relação com o desempenho físico em praticantes de ciclismo
Introduction: The dual-mechanisms of control (DMC) theory suggests that we act in two ways in performing a task, proactively maintaining the goal sustainably or reactively recruiting attention only when necessary. Endurance sports have the characteristic of maintaining the goal for an extended ti...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/26879 |
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| Resumo: | Introduction: The dual-mechanisms of control (DMC) theory suggests that we
act in two ways in performing a task, proactively maintaining the goal sustainably
or reactively recruiting attention only when necessary. Endurance sports have the
characteristic of maintaining the goal for an extended time, and the maintenance
of this can be changed due to several stimuli (physical/mental), influencing
physical performance. Objectives: To verify the effect of physical and cognitive
demands on the predominance of cognitive control (proactive/reactive) in cycling.
Methods: 16 males, young adults (29.4 ± 5.2 years), cycling practitioners (5.4 ±
4.6 years), normal body fat (22 ± 17.5%), classified as untrained cyclists ( 274.2
± 47.9 watts), training frequency of 3.5 ± 1.5 days/week and 123.8 ± 60.5
kilometers/week. Experimental study had four visits, being the first one familiar
with the scales and incremental test; second and third randomized sessions, one
session counted on the cognitive test before physical exercise (10 km time trial
against the clock) and in the control session they remained at rest with equivalent
time; the fourth session was intended only for the evaluation of body composition.
To evaluate cognitive control, the computerized AX-CPT test was used, based
on the Proactive Behavioral Index (PBI). The Friedman test was followed by
Dunn's post hoc test to analyze the effect of time on cognitive control. The level
of significance was set at p < 0.05. Results: Physical exercise performed with
previous cognitive demand caused a significant change in the reaction time of the
PBI (PBI-RT) (x² (2) = 6,500, p = 0.039). The post hoc test revealed a significant
decrease (median = 0.06 ms) between baseline when compared to cognitive and
physical demand (p = 0.039). Conclusion: Our findings demonstrated that the
association of a cognitive and physical demand promoted a decrease of the
proactive control and only the physical demand was not able to change the
cognitive control. |
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