Mohammad Sadegh Afroozeh; Hasan Mohammadzadeh Jahatloo; Mostafa Edrisi Kolur; Ali Afroozeh
Abstract
The aim of this study was to examine the effect of overt and covert motivationalself-talk on perceived exertion and performance in a progressive exercise untilexhaustion in wrestlers. The population consisted of wrestlers in Urmia and 15volunteer subjects were selected. This study was performed in three ...
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The aim of this study was to examine the effect of overt and covert motivationalself-talk on perceived exertion and performance in a progressive exercise untilexhaustion in wrestlers. The population consisted of wrestlers in Urmia and 15volunteer subjects were selected. This study was performed in three sessions with aone-week interval. The first session was held without self–talk while the second andthird sessions were held covertly and overtly respectively. Bruce aerobic exercisetest was used in this study as well. The time to exhaustion was considered asperformance. Burg scale was used every 3 minutes in order to measure subjects'exhaustion. To analyze the data, ANOVA with repeated measures and TUKEY posthoc test was used. The results showed that only covert self-talk had a significanteffect on subjects’ performance (P=0.002). Also, overt motivational self-talk(P=0.001) significantly decreased the subjects' perceived exertion rather thancovert self–talk. There was no significant difference between covert self-talk andwithout self–talk (P=0.121). In conclusion, overt motivational self-talk decreasedthe perceived exertion of the subjects in the progressive exercise until exhaustionwhile covert motivational self-talk improved subjects’ endurance.
Ali Fathizadeh; Hasan Mohammadzadeh Jahatlo
Abstract
Motor imagery is the ability to imagine performing a movement without any action. The time a movement is mentally rehearsed highly correlates with the actual time of motor action. In this study, the effect of voluntary changes in imagery speed on the duration of the actual performance and learning ...
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Motor imagery is the ability to imagine performing a movement without any action. The time a movement is mentally rehearsed highly correlates with the actual time of motor action. In this study, the effect of voluntary changes in imagery speed on the duration of the actual performance and learning a complex unfamiliar skill, and also the difference between the effects of real-time and fast imagery were investigated. 32 male volunteers (mean age: 22.23±2.07 yr) participated in the pretest, imagery training period, posttest, and retention test. The motor task was a sequence of new skills involving coordinated movements of upper and lower extremities with body locomotion. During the training period and in the real time, they mentally rehearsed the sequence performed in the pretest faster and more slowly. Analysis of variance (ANOVA), dependent and independent t tests were used to analyze the data. The findings revealed that the actual duration of real-time and fast imagery group decreased after training period (p<0.05) and it did not change in the retention test compared with the posttest (p>0.05). However, there was no difference between the effect of real-time and fast imagery (p>0.05). Moreover, no significant differences were found in the subsequent performance and retention of control and slow imagery groups (p>0.05). It is suggested that the duration of motor imagery should be close to the duration of physical performance in order to promote the performance and learning new tasks and individuals should be cautious about changes in mental image speed.
