Purpose The purpose of this study is to measure the daily physical activity of male and female middle school students according to the period (VD: vaction day, SNPE: school day no PE, SPE: school day with PE) by using 3-axis accelerometer, and to compare the characteristics of adolescent physical activity according to gender and period. Methods The subjects were 130 middle school students (68 male, 62 female students). Data collection was performed using a 3-axis accelerometer(GT3X model, ActiGraph). Collected data were converted into time by intensity and rate using physical activity analysis program (Actilife v6.11.9) and analyzed by statistical program (SPSS 25.0). One-way ANOVA and independent sample t-test were used for statistical analysis. Tukey's HSD was used as a post analysis. The statistical significance level was .05. Results As a result, during each periods(VD, SNPE, and SPE), except for MVPA(moderate to vigorous physical activity) time on SPE, sedentary and MVPA time were significantly higher in female students, and low intensity and total physical activity time were significantly higher in male students. For male students, total physical activity time was higher in the order of SPE, SNPE, and VD, and for female students, physical activity time during the semester(SNPE and SPE) was significantly higher than VD. For male students, MVPA time was significantly high in order of SPE, SNPE, and VD, and for female students, it was high in order of SPE, SNPE, and VD but only significant difference occurred between SPE and VD. For both male and female students, sedentary time was high in the order of VD, SNPE, and SPE, but the sedentary time during vacation was significantly higher than during the semester. Conclusions When summarizing the results, first, it was confirmed that school and physical education classes as a physical activity space play a significant role in physical activity, especially MVPA, of male and female middle school students, second, the physical activity effect of physical education class was found to be more effective in male students. Based on the results of this study, it is necessary to conduct studies on various grades and to explore various factors affecting physical activity in a complex way.
The importance of a health problem is emphasized in youth. Unfortunately, healthy activity physical education is not well utilized and is not popularly being researched. In order to improve these problems, this study attempted to explore the validity and applicability of SPARK program by designing and practicing the SPARK based P.E. classes. This study employed a mixed method research method based on a qualitative research strategy. Physical activity and physical fitness level were measured by accelerometers and FITNESSGAM. Additionally, empirical data were collected and analyzed by both Photovoice technique and recording. Findings of this study were divided into designing and practicing perspectives. First of all, the PE classes based on SPARK program was designed by 2009 national physical education curriculum and studies associated with the SPARK program. Further, I attempted to specify teaching strategy for enhancing physical activity level, power of execution and motivation. Second, PE class which has higher physical activity level, more participation and achievement, and successful fulfillment were emerged as consequences. Based on the study results, I discussed the validity and applicability of Physical Fitness based SPARK program and proposed suggestions for future studies.
Purpose The purpose of this study was to investigate the changes of gait patterns and muscle activations according to dual tasks during stair ascending. Methods Twelve sedentary young male adults(Age: 27.0±1.8 yrs, Weight: 65.8±9.9 kg) without any lower extremity injuries participated in the study. Participants performed stair walking up 7 floors and their ascending motion on each floor was analyzed according to dual tasks. A wireless electromyography (EMG) were attached on the Rectus Femoris(RF), Biceps Femoris(BF), Gastrocnemius(GN), Tibialis Anterior(TA) muscle to calculate integrated EMG(iEMG) and co-contraction index(CI). Chest and left heel accelerometer signal were recorded by wireless accelerometer and those were used to calculate approximate entropy(ApEn) for analyzing gait pattern. All analyses were performed with SPSS 21.0 and for repeated measured ANOVA and Post-hoc was LSD. Results The results of this study indicated that dual task appeared to increase their time, CI and there were a statistically significant difference in most muscle on each floors compared to the non dual tasks. Also, ApEn were a statistically significant difference in only left and right direction than non dual task. Subjects showed more irregular pattern and instability muscle activation response during dual tasks. Conclusion Because there are many dangers often use of stairs in everyday life, in the future, we have to make a lot of efforts to prevent fall.
Purpose The purpose of this study is to explore the physical activity promotion plans for female student by revising and supplementing the SPARK program which is actively applied as a P.E physical activity improvement program recently. Methods To achieve this, this study followed the custom of action research and apprehended problem in female students' physical activity in SPARK soccer program(first action and examination), problem solving plan(replanning), execution and evaluation of replanned SPARK soccer program (second action and evaluation). The collection and analysis of data was conducted by sequential explanation strategy. Specifically, the study utilized 3 dimensional accelerometer to measure the physical activity in P.E class, and collected data which could apprehend the experience of students by utilizing qualitative study tools(observation, class note, interview). To analyze the collected data, the study utilized mixed-methods study analysis method developed by Greene(2007). Results The study results are as follows. As for the result of first action(October~November 2014), SPARK program increases the entire physical activity in P.E class, but the female students' activity was relatively lower than male students'. The reasons for lower physical activity of female students' were unmotivated class, burdensome class, alienated class. These were specified into teaching strategy to replan and execute the second action (May~June 2015). Compared to first action, the second action showed positive physical activity, and the MVPA of female students' showed statistical difference (<.01). As for the result of qualitative analysis, the positive grounds of second action are 1) motivative resource like "necessity", 2)hard but meaningful learning activity, and 3)kind P.E teacher. Conclusions In conclusion, the implementation of a soccer class with a modified supplement to the SPARK program can enhance physical activity of female middle school students.
Recently, there have been diverse types of physical activities supported by government policy in S. Korea. However, these activities may not be effective if they do not reach to moderate to vigorous level. This study designed school physical education system based on SPARK program, which include traditional physical education, sports club based physical activity, after school physical activity, and Saturday physical activity, to evaluate its effectiveness associated with physical fitness and empirical meanings of physical activity. This study employed a mixed method research paradigm for better understanding. Among various mixed method paradigm stances, this study employed "blending strategy" for complementary analysis. First of all, the effectiveness in health condition was evaluated by quantitative data. Specifically, physical fitness and lifestyle were analyzed by Helmas, IPAQ, and Accelerometer respectively. Second, empirical meanings of physical activity were analyzed by both Photovoice and in-depth interview which are qualitative research method. The result of this study first showed that a specially designed school physical activity program based on the SPARK contributed to improve students' physical fitness and lifestyle as well, however, there were important differences between male and female students. Second, physical achievement, alteration of spatiotemporal meaning, and change of societal relationship emerged as important themes. Further, these themes showed that they played an important role to maintain students' motivation in physical activity and consequently physical activity promotion was invigorated in school. Based on these results, we synthesized investment factors and process factors and outcome factors respectively. Finally, we suggested alternative teaching methods and suggestions for following research to overcome gender issues.
Active participation in Moderate to Vigorous Physical Activity(MVPA) is the indicator of healthy development for adolescents. However, Korean adolescents’ MVPA have continuously declined, and Korean adolescents have lower levels of MVPA compared to adolescents in other countries. Considering this issue, the purpose of this study is to examine the effectiveness of SPARK M-SPAN program to promote adolescents’ MVPA in P.E. classes and to understand how the promotion of adolescents’ MVPA occurs. To collect data, this study used Sequential Mixed Method and GT3X accelerometers. A total of 168 adolescents (84 in an experimental group and 84 in a control group) participated in this study for the quantitative data analysis, and six students and a teacher were interviewed for the qualitative data analysis. Paired t-test showed that students in SPARK P.E. classes experienced the significant decreases of sedentary behaviors(-339.6 sec) and low intensity P.A.(-96.9 sec) at p<.05 and the significant increases of moderate(+99.3 sec), vigorous(+252.4 sec), and very vigorous intensity P.A.(+84.7 sec) regardless of gender difference at p<.05 except for female students’ moderate intensity P.A.. The qualitative data analysis showed that SPARK classes gave students positive learning environments and led them to experience enjoyment and achievement-orientated learning Key teaching strategies of SPARK program and future research suggestions were provided in the discussion section.
