Shahrian Eshaghi; Morteza Taheri; Khadijeh Irandoust
Abstract
The purpose of this study was to investigate the effect of a course of aerobic exercise and vitamin D supplementation on the psychomotor function of elderly women with sleep disorders. Based on this, 42 people were selected in an accessible and targeted manner with an age range of 60-70 years. They all ...
Read More
The purpose of this study was to investigate the effect of a course of aerobic exercise and vitamin D supplementation on the psychomotor function of elderly women with sleep disorders. Based on this, 42 people were selected in an accessible and targeted manner with an age range of 60-70 years. They all suffered from insomnia. Subjects were randomly divided into four groups: aerobic exercise, aerobic exercise-vitamin D supplement, vitamin D supplement and control group. Vitamin D intake in both groups was taken as 2000 units daily. The Physical Activity Readiness Diagnostic Questionnaire (PARQ) was used to know the level of physical fitness of the subjects and the Gibson 24-hour diet recall questionnaire the day before the pre-test and post-test. The Pittsburgh Sleep Quality Scale was used to extract the sleep profile. COG psychomotor test was also used to assess cognitive and mental components and information processing. The results showed that the aerobic, supplement and aerobic-supplement groups had a significant improvement in selective attention and reaction time. Also, the aerobic-supplement group had a significant improvement in selective attention and reaction time compared to the aerobic group and the supplement group. Aerobic exercise along with vitamin D supplementation seems to improve the motor and motor function of older women. Therefore, vitamin D supplementation and aerobic exercise in interaction are recommended for older women.
Parvaneh Shamsipour Dehkordi; Behrouz Abdoli; Mehdi Namazizadeh; Hassan Ashayeri
Abstract
The aim of this study was to compare the effect of time courses of interference and retention test on implicit motor memory consolidation. 60 right-handed female students who had cognitive, mental and physical health and novice at performing alternating serial reaction time task (ASRTT) and serial color ...
Read More
The aim of this study was to compare the effect of time courses of interference and retention test on implicit motor memory consolidation. 60 right-handed female students who had cognitive, mental and physical health and novice at performing alternating serial reaction time task (ASRTT) and serial color matching task (SCMT) (mean age=21.95+1.95 years) were randomly divided into three groups of interference with distances of 6, 24 and 72 hours after the practice session. In the acquisition phase, all groups practiced the ASRTT in 25 blocks of 80 trials in one day. Then, they participated in the second interference task (SCMT) 6, 24 and 72 hours after the practice session and participated in the retention test 24 hours later. In the acquisition phase, subjects’ performance improved with an increase in the practice trials and they had better performance in the 5th practice block (P<0.001). In retention test, there was no significant difference between mean reaction time in the 5th practice block and retention test of the first group (interference with the 6 hours distance). There was a significant difference between mean reaction time in the 5th practice block and retention test of the second group (interference with the 24 hours distance) and the third group (interference with 72 hours distance). The third group (interference of 72 hours distance) had the best performance while the first group (interference with the 6 hours distance) had the weakest performance. Therefore, the interference distances of 24 and 72 hours after the acquisition session led to memory consolidation.
Morteza Taheri; Fahimeh Noorian
Abstract
The aim of this study was to investigate the effect of neurofeedback training on sleep quality and psychological skills of athletes with psychophysiological approach. The research method was semi-experimental and application with pretest and posttest design and a control group. 31 athletes who ...
Read More
The aim of this study was to investigate the effect of neurofeedback training on sleep quality and psychological skills of athletes with psychophysiological approach. The research method was semi-experimental and application with pretest and posttest design and a control group. 31 athletes who were members of a sport team gained the criteria to enter the study. They were randomly assigned to experimental and control groups and the experimental group received neurofeedback treatment. The neurofeedback training lasted 3 sessions a week, 45 min. each session for 2 months. This protocol was performed in a bipolar manner at C4-CZ points. Pittsburgh Sleep Quality Index (PSQI) was used to extract sleep quality profile and OMSAT-3 and Elisa method were used to assess psychophysiological stress of participants. Covariance analysis and dependent t test were used to analyze the data. The results suggested that neurofeedback training can influence to balance stress and to improve sleep quality of athletes which greatly affects their performance.
Ahmad Nikravan; Valiollah Kashani; Elahe Mostafaifar
Abstract
This study aimed at investigating the effect of sleep deprivation and retroactive interference on offline learning in tennis simulated game. Based on the questionnaires related to the variables under study, 50 female students of Semnan University (age range 19-25 years) were selected as the sample ...
Read More
This study aimed at investigating the effect of sleep deprivation and retroactive interference on offline learning in tennis simulated game. Based on the questionnaires related to the variables under study, 50 female students of Semnan University (age range 19-25 years) were selected as the sample and divided into 5 groups: perfect sleep, sleep deprivation, perfect sleep and retroactive interference, sleep deprivation and retroactive intervention and training with rest interval less than 1 hour. A tennis simulated game (with rules and scoring similar to a real game) was performed to measure offline learning. One-way ANOVA and ANOVA with repeated measures were used for inferential statistics at a significance level (P≤0.05). The results showed that the differences in offline learning (Sig=0.001) and retention scores (Sig=0.001) were significant among the research groups. In those groups with sufficient rest intervals between each two sessions and full rest, the level of their performance was higher in the next day than the previous day. Opposite effects were observed with sleep deprivation and retroactive interference. Therefore, those who are learning a skill should pay attention to their daily activities and sleep patterns to prevent a disruption to skill learning and to take advantage of their practices.