Nikolaos Vernadakis - Academia.edu (original) (raw)
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Papers by Nikolaos Vernadakis
International Journal of Instruction, Oct 1, 2021
World Academy of Science, Engineering and Technology, International Journal of Sport and Exercise Sciences, Nov 16, 2016
etec.hawaii.edu
Abstract: With the recent growth of new information and communication technologies (ICTs), web ba... more Abstract: With the recent growth of new information and communication technologies (ICTs), web based course delivery has become a promising alternative for expanding the educational opportunities in the tertiary education. Blended learning -an alternative type of teaching- ...
European Journal of Physical Education and Sport, Mar 4, 2022
The aim of this study was to explore whether there is a gender difference in the beneficial effec... more The aim of this study was to explore whether there is a gender difference in the beneficial effects of Nintendo Wii-Fit Plus, which is a series of sports video games used to support Physical Education students’ balance performance. Participants were twenty-six (n=26) undergraduate students, between the ages from 20-22 years old. Thirteen (50%) of the participants were male and thirteen were female (50%). The balance ability assessment was performed with the Biodex stability system. Participants voluntarily completed 24-minute Wii-Fit Plus sports video games 2 times per week for a total of 8 weeks. A one-way analysis of covariance (ANCOVA) was conducted to compare the adjusted mean score of the post-tests for the two gender groups. The results indicated that there was no significant difference between the two gender groups on balance post-test scores. These finding suggest that females will benefit as equally as males by using the Nintendo Wii-Fit Plus balance games. However, further...
Sport Sciences for Health, 2021
The purpose of this study was to examine the factor structure and cross-cultural validity of the ... more The purpose of this study was to examine the factor structure and cross-cultural validity of the self-report questionnaire of Ho, Lwin, Sng & Yee (2017) in a sample of Greek primary school students with mild intellectual disability (ID) using VR exergames. The questionnaire consisted of five scales, namely self-presence, mood experience, game enjoyment, attitude toward exergames and preference for future gameplay. Participants were 103 primary school students with mild ID aged 9–12 years old (males = 52.4%, females = 47.6%). Confirmatory Factor Analysis was undertaken through structural equation modelling to determine factorial validity. Convergent validity and internal consistency were calculated by considering the average variance extracted and the composite reliability respectively, while discriminant validity was estimated by maximum shared squared variance. Results indicated that the model was a good fit for the data as soon as seven items were dropped from the scale because of presenting poor consistency. Instrument was shown to have good internal consistency, appropriate convergent and discriminant validity. Evidence was found in support of the psychometric integrity of the Ho, Lwin, Sng & Yee (2017) questionnaire when implemented to children with mild ID.
Journal of Human Sport and Exercise, 2018
The aim of this study was to explore whether there is a gender difference in the beneficial effec... more The aim of this study was to explore whether there is a gender difference in the beneficial effects of Nintendo Wii-Fit Plus, which is a series of sports video games used to support Physical Education students’ balance performance. Participants were twenty-six (n=26) undergraduate students, between the ages from 20-22 years old. Thirteen (50%) of the participants were male and thirteen were female (50%). The balance ability assessment was performed with the Biodex stability system. Participants voluntarily completed 24-minute Wii-Fit Plus sports video games 2 times per week for a total of 8 weeks. A one-way analysis of covariance (ANCOVA) was conducted to compare the adjusted mean score of the post-tests for the two gender groups. The results indicated that there was no significant difference between the two gender groups on balance post-test scores. These finding suggest that females will benefit as equally as males by using the Nintendo Wii-Fit Plus balance games. However, further...
The effect of physical activity (PA) on health is well documented. The assessment of PA is a valu... more The effect of physical activity (PA) on health is well documented. The assessment of PA is a valuable and important issue, however, there are several methodological issues among the available methods of measurement that may have implications for the prevention of specific diseases. The purpose of this study was to examine the differences between an objective method of measurement and the subjective estimation of the PA for novice skiers. Seventy-five students aged 19-21 years old with no previous experience in ski participated in this study. Participants wore a heart rate monitor during practice in order to record the exercise intensity. Simultaneously, a trained observer recorded their time on task. A day after the objective measurement, the participants filled a questionnaire in order to estimate their perceived exertion during practice as well as their perceived time on task. The results showed (1) differences between the observed time on task and the perceived recalled time, (2) no differences overall between the recorded and perceived recalled intensity of exercise but when groups were split according to their objective intensity a difference was found for each group respectively. Participants overall had overestimated the time on task, but they had underestimated the intensity of their effort recalled 1 day after their practice. These results raise the question whether a questionnaire as method of measuring PA is reliable, especially when it is used to estimate energy expenditure. However, further studies must be made in order to examine the implications of such a question.
Sport Sciences for Health, 2021
The purpose of this study was to examine the factor structure and cross-cultural validity of the ... more The purpose of this study was to examine the factor structure and cross-cultural validity of the self-report questionnaire of Ho, Lwin, Sng & Yee (2017) in a sample of Greek primary school students with mild intellectual disability (ID) using VR exergames. The questionnaire consisted of five scales, namely self-presence, mood experience, game enjoyment, attitude toward exergames and preference for future gameplay. Participants were 103 primary school students with mild ID aged 9–12 years old (males = 52.4%, females = 47.6%). Confirmatory Factor Analysis was undertaken through structural equation modelling to determine factorial validity. Convergent validity and internal consistency were calculated by considering the average variance extracted and the composite reliability respectively, while discriminant validity was estimated by maximum shared squared variance. Results indicated that the model was a good fit for the data as soon as seven items were dropped from the scale because of presenting poor consistency. Instrument was shown to have good internal consistency, appropriate convergent and discriminant validity. Evidence was found in support of the psychometric integrity of the Ho, Lwin, Sng & Yee (2017) questionnaire when implemented to children with mild ID.
Journal of Human Sport and Exercise, 2018
The effect of physical activity (PA) on health is well documented. The assessment of PA is a valu... more The effect of physical activity (PA) on health is well documented. The assessment of PA is a valuable and important issue, however, there are several methodological issues among the available methods of measurement that may have implications for the prevention of specific diseases. The purpose of this study was to examine the differences between an objective method of measurement and the subjective estimation of the PA for novice skiers. Seventy-five students aged 19-21 years old with no previous experience in ski participated in this study. Participants wore a heart rate monitor during practice in order to record the exercise intensity. Simultaneously, a trained observer recorded their time on task. A day after the objective measurement, the participants filled a questionnaire in order to estimate their perceived exertion during practice as well as their perceived time on task. The results showed (1) differences between the observed time on task and the perceived recalled time, (2) no differences overall between the recorded and perceived recalled intensity of exercise but when groups were split according to their objective intensity a difference was found for each group respectively. Participants overall had overestimated the time on task, but they had underestimated the intensity of their effort recalled 1 day after their practice. These results raise the question whether a questionnaire as method of measuring PA is reliable, especially when it is used to estimate energy expenditure. However, further studies must be made in order to examine the implications of such a question.
World Leisure Journal, 2009
International Journal of Instruction, Oct 1, 2021
World Academy of Science, Engineering and Technology, International Journal of Sport and Exercise Sciences, Nov 16, 2016
etec.hawaii.edu
Abstract: With the recent growth of new information and communication technologies (ICTs), web ba... more Abstract: With the recent growth of new information and communication technologies (ICTs), web based course delivery has become a promising alternative for expanding the educational opportunities in the tertiary education. Blended learning -an alternative type of teaching- ...
European Journal of Physical Education and Sport, Mar 4, 2022
The aim of this study was to explore whether there is a gender difference in the beneficial effec... more The aim of this study was to explore whether there is a gender difference in the beneficial effects of Nintendo Wii-Fit Plus, which is a series of sports video games used to support Physical Education students’ balance performance. Participants were twenty-six (n=26) undergraduate students, between the ages from 20-22 years old. Thirteen (50%) of the participants were male and thirteen were female (50%). The balance ability assessment was performed with the Biodex stability system. Participants voluntarily completed 24-minute Wii-Fit Plus sports video games 2 times per week for a total of 8 weeks. A one-way analysis of covariance (ANCOVA) was conducted to compare the adjusted mean score of the post-tests for the two gender groups. The results indicated that there was no significant difference between the two gender groups on balance post-test scores. These finding suggest that females will benefit as equally as males by using the Nintendo Wii-Fit Plus balance games. However, further...
Sport Sciences for Health, 2021
The purpose of this study was to examine the factor structure and cross-cultural validity of the ... more The purpose of this study was to examine the factor structure and cross-cultural validity of the self-report questionnaire of Ho, Lwin, Sng & Yee (2017) in a sample of Greek primary school students with mild intellectual disability (ID) using VR exergames. The questionnaire consisted of five scales, namely self-presence, mood experience, game enjoyment, attitude toward exergames and preference for future gameplay. Participants were 103 primary school students with mild ID aged 9–12 years old (males = 52.4%, females = 47.6%). Confirmatory Factor Analysis was undertaken through structural equation modelling to determine factorial validity. Convergent validity and internal consistency were calculated by considering the average variance extracted and the composite reliability respectively, while discriminant validity was estimated by maximum shared squared variance. Results indicated that the model was a good fit for the data as soon as seven items were dropped from the scale because of presenting poor consistency. Instrument was shown to have good internal consistency, appropriate convergent and discriminant validity. Evidence was found in support of the psychometric integrity of the Ho, Lwin, Sng & Yee (2017) questionnaire when implemented to children with mild ID.
Journal of Human Sport and Exercise, 2018
The aim of this study was to explore whether there is a gender difference in the beneficial effec... more The aim of this study was to explore whether there is a gender difference in the beneficial effects of Nintendo Wii-Fit Plus, which is a series of sports video games used to support Physical Education students’ balance performance. Participants were twenty-six (n=26) undergraduate students, between the ages from 20-22 years old. Thirteen (50%) of the participants were male and thirteen were female (50%). The balance ability assessment was performed with the Biodex stability system. Participants voluntarily completed 24-minute Wii-Fit Plus sports video games 2 times per week for a total of 8 weeks. A one-way analysis of covariance (ANCOVA) was conducted to compare the adjusted mean score of the post-tests for the two gender groups. The results indicated that there was no significant difference between the two gender groups on balance post-test scores. These finding suggest that females will benefit as equally as males by using the Nintendo Wii-Fit Plus balance games. However, further...
The effect of physical activity (PA) on health is well documented. The assessment of PA is a valu... more The effect of physical activity (PA) on health is well documented. The assessment of PA is a valuable and important issue, however, there are several methodological issues among the available methods of measurement that may have implications for the prevention of specific diseases. The purpose of this study was to examine the differences between an objective method of measurement and the subjective estimation of the PA for novice skiers. Seventy-five students aged 19-21 years old with no previous experience in ski participated in this study. Participants wore a heart rate monitor during practice in order to record the exercise intensity. Simultaneously, a trained observer recorded their time on task. A day after the objective measurement, the participants filled a questionnaire in order to estimate their perceived exertion during practice as well as their perceived time on task. The results showed (1) differences between the observed time on task and the perceived recalled time, (2) no differences overall between the recorded and perceived recalled intensity of exercise but when groups were split according to their objective intensity a difference was found for each group respectively. Participants overall had overestimated the time on task, but they had underestimated the intensity of their effort recalled 1 day after their practice. These results raise the question whether a questionnaire as method of measuring PA is reliable, especially when it is used to estimate energy expenditure. However, further studies must be made in order to examine the implications of such a question.
Sport Sciences for Health, 2021
The purpose of this study was to examine the factor structure and cross-cultural validity of the ... more The purpose of this study was to examine the factor structure and cross-cultural validity of the self-report questionnaire of Ho, Lwin, Sng & Yee (2017) in a sample of Greek primary school students with mild intellectual disability (ID) using VR exergames. The questionnaire consisted of five scales, namely self-presence, mood experience, game enjoyment, attitude toward exergames and preference for future gameplay. Participants were 103 primary school students with mild ID aged 9–12 years old (males = 52.4%, females = 47.6%). Confirmatory Factor Analysis was undertaken through structural equation modelling to determine factorial validity. Convergent validity and internal consistency were calculated by considering the average variance extracted and the composite reliability respectively, while discriminant validity was estimated by maximum shared squared variance. Results indicated that the model was a good fit for the data as soon as seven items were dropped from the scale because of presenting poor consistency. Instrument was shown to have good internal consistency, appropriate convergent and discriminant validity. Evidence was found in support of the psychometric integrity of the Ho, Lwin, Sng & Yee (2017) questionnaire when implemented to children with mild ID.
Journal of Human Sport and Exercise, 2018
The effect of physical activity (PA) on health is well documented. The assessment of PA is a valu... more The effect of physical activity (PA) on health is well documented. The assessment of PA is a valuable and important issue, however, there are several methodological issues among the available methods of measurement that may have implications for the prevention of specific diseases. The purpose of this study was to examine the differences between an objective method of measurement and the subjective estimation of the PA for novice skiers. Seventy-five students aged 19-21 years old with no previous experience in ski participated in this study. Participants wore a heart rate monitor during practice in order to record the exercise intensity. Simultaneously, a trained observer recorded their time on task. A day after the objective measurement, the participants filled a questionnaire in order to estimate their perceived exertion during practice as well as their perceived time on task. The results showed (1) differences between the observed time on task and the perceived recalled time, (2) no differences overall between the recorded and perceived recalled intensity of exercise but when groups were split according to their objective intensity a difference was found for each group respectively. Participants overall had overestimated the time on task, but they had underestimated the intensity of their effort recalled 1 day after their practice. These results raise the question whether a questionnaire as method of measuring PA is reliable, especially when it is used to estimate energy expenditure. However, further studies must be made in order to examine the implications of such a question.
World Leisure Journal, 2009