Junior High School Adolescents Research Articles

The Relationship Between Protein, Iron, Folic Acid, Vitamin C Intake and Breakfast Habits With The Incidence of Anemia in Female Students of SMPN 152 Jakarta

Anemia is a condition where the number of red blood cells or the level of hemoglobin is lower than normal. In Indonesia, the prevalence of anemia among adolescent girls remains quite high at 32%. Inadequate nutrient intake can disrupt red blood cell formation, particularly important nutrients such as protein, iron, vitamin C, and folic acid. This study aims to investigate the relationship between the intake of protein, iron, folic acid, vitamin C, and breakfast habits with the incidence of anemia among female adolescents in junior high school. This is a quantitative study with a cross-sectional design, analyzed using Spearman correlation tests, conducted at SMPN 152 Jakarta with a sample size of 50 individuals. Data on protein, iron, folic acid, and vitamin C intake were obtained through 24-hour food recall interviews, breakfast habits were assessed via a questionnaire, and anemia data were collected through blood samples using a digital Hb checker. The analysis results indicate a relationship between protein intake (p = 0.000), iron intake (p = 0.000), folic acid intake (p = 0.030), vitamin C intake (p = 0.010) and the incidence of anemia, while no relationship was found between breakfast habits (p = 0.161) and anemia incidence. It is concluded that there is a correlation between protein intake, iron intake, folic acid intake, and vitamin C intake with anemia incidence at SMPN 152 Jakarta. The variable most strongly correlated with anemia incidence is iron intake with a value of (r = 0.640).

Unraveling depressive symptom networks: A three-year longitudinal study among Chinese junior high school adolescents.

Adolescence is the peak period for the occurrence of mental health issues, particularly in the stage of junior high school. Depressive symptoms are among the most frequently experienced psychological problems. However, little is known about the symptom-level interaction features of depressive symptoms and the roles of different symptoms across the junior high school stage. To address these gaps, this study conducted a three-year longitudinal study that recruited 1301 Chinese junior high school adolescents (48.2% females; mean age = 12.46 ± 0.62, ranging from 11 to 14 in the first year). The Center for Epidemiological Studies Depression Scale was used to assess depressive symptoms. The regularized partial correlation network and the cross-lagged panel network models were used to explore the symptom-level interaction pattern. In regularized partial correlation networks, "I felt depressed" was a stable central symptom throughout the junior high school stage. Besides, "I felt lonely" and "I felt that people disliked me" were the other central symptoms in grade 7 and grade 8, and "I felt everything I did was an effort" played a central role in grade 9. Within cross-lagged panel networks, "I felt that people disliked me" and "I felt hopeless about the future" had important effects on predicting other depressive symptoms from grade 7 to 8 and from grade 8 to 9. By investigating the longitudinal interaction patterns of depressive symptoms among junior high school adolescents, the current study identifies core symptoms that could be potential prevention or intervention targets and provides a novel insight for understanding depressive symptoms during adolescence in depth.

The association between family socio-demographic factors, parental mediation and adolescents’ digital literacy: a cross-sectional study

BackgroundDigital technology has a two-sided impact whether it is used appropriately or not. It is crucial to promote the benefits of digital technology and reduce its harms by bolstering adolescents’ digital literacy. The appropriateness of the strategies parents use to manage their children’s digital lives plays a key role. This study aims to investigate the separate effects of family socio-demographic factors and varied dimensions of parental mediation on adolescents’ digital literacy separately and simultaneously to explore the appropriate parental mediation strategies even in the absence of favorable family status.MethodsA cross-sectional survey was utilized with a sample of 1894 Chinese adolescents in junior and senior high schools (mean age = 14.01, 48.94% female), using a set of exam questions to test children’s objective digital literacy online. Family socio-demographic factors (parental marital status, economic status, and parental education levels) and varied dimensions of parental mediation were included as predictors of digital literacy. Hierarchical regression analysis was used to estimate the relation between the variables.ResultsHigher parental education levels were positively associated with adolescents’ parental mediation and digital literacy while better family economic status and parental divorce were negatively associated. Among the dimensions of parental mediation, active mediation, restrictive mediation and supervision were significantly associated with adolescents’ digital literacy, but not for co-use. Active mediation and supervision showed significant positive associations with adolescents’ digital literacy, whereas, co-use showed a significant negative association when all parental mediation dimensions were integrated into the model, The significant association between restrictive mediation and digital literacy disappeared. Parental mediation has diluted the impact of family socio-demographic factors on adolescents’ digital literacy.ConclusionsEffective interventions are needed to promote parental active mediation and supervision to help adolescents develop digital literacy and navigate the digital world, especially for adolescents who do not have highly educated parents or whose parents are divorced.

Loneliness, Internalizing and Externalizing Problems, and Suicidal Ideation Among Chinese Adolescents: A Longitudinal Mediation Analysis

PurposeResearch indicates that loneliness and emotional and behavioral problems increase the risk of suicidal ideation in adolescents, but less is known about the distinct contributions of these problems. This study aimed to distinguish the pathways through which loneliness, internalizing problems, and externalizing problems contribute to suicidal ideation in Chinese adolescents. MethodsWe did a longitudinal mediation analysis with data collected at 3 time points (2021.05, 2021.10, and 2022.05) from 28 Taizhou high schools. Loneliness and suicidal ideation were assessed using the UCLA 3-Item Loneliness Scale and one suicide item from the Children’s Depression Inventory, respectively. The Strength and Difficulties Questionnaire assessed internalizing (emotional and peer problems) and externalizing problems (conduct and hyperactivity problems). Structural equation modeling was used to construct complete longitudinal path models. ResultsUsing data from 2,190 adolescents in junior and senior high schools, we found that loneliness, internalizing problems, and externalizing problems separately contributed to subsequent higher levels of suicidal ideation. Most notably, loneliness predicted worse subsequent internalizing problems (β = 0.279, p < .001) and externalizing problems (β = 0.159, p < .001), which in turn predicted more severe suicidal ideation (β = 0.019, p < .001; β = 0.018, p < .001). Loneliness also partially mediated the association between internalizing or externalizing problems and suicidal ideation. DiscussionLoneliness, internalizing problems, and externalizing problems were strongly intertwined with suicidal ideation in adolescents. Public health initiatives could reduce loneliness and emotional and behavioral problems by implementing multifaceted interventions, thereby breaking the vicious circle and protecting against the development of suicidal ideation.

Exploring the Benefits of Forgiveness among Adolescents in Junior High Schools in Bimbilla in Ghana: A Comparative Study Based on Age

Exploring the Benefits of Forgiveness among Adolescents in Junior High Schools in Bimbilla in Ghana: A Comparative Study Based on Age

TINGKAT PENGETAHUAN TALASEMIA, PENYAKIT MENULAR SEKSUAL DAN KESEHATAN REPRODUKSI PADA REMAJA USIA SEKOLAH MENENGAH PERTAMA

This PKM Activity aims to determine the level of knowledge of adolescents about thalassemia, sexually transmitted diseases, and reproductive health. The method used in this PKM is material presentation/ counseling and direct interviews using a questionnaire linked to the Google Form application. The results of this PKM activity were obtained as follows; The source of information that plays a dominant role in conveying sexually transmitted infections-HIV/AIDs is the internet, namely 57(53.4%). As many as 76(70.4%) students did not know about thalassemia. Surveys on sexually transmitted diseases/AIDs show that the average junior high school teenager has sufficient knowledge, namely above 50%. Surveys on reproductive health knowledge show that the average junior high school teenager has good knowledge about the physical changes that occur during puberty, including; 1) an Increase in muscle mass (30%), 2) a change in voice (71.8%), 3) hair growth on the face and pubic area (95%), 4) increased sex drive (33.6%). 5) enlarged breasts (17.3%), 6) menstruation started (40.9%). A survey limited to female respondents showed that the level of knowledge about the female reproductive cycle related to the fertile period in junior high school teenagers was around 24 (43.3%) respondents, but 30 (50%) respondents did not know this. The level of knowledge about the fertile period and the possibility of pregnancy occurring in that period are: 1) the response of not knowing was 26 (43.3%), people, 2) immediately after menstruation ended 14 (23.3%), 3) in the middle between two menstruations as many as 14 (23.3%). From the results obtained, it can be concluded that the level of knowledge of junior high school adolescents regarding thalassemia is still very poor, while for sexually transmitted infections and reproductive health, it is at an average level. It is hoped that after participating in PKM, teenagers will have a better level of knowledge than before.

The Effect of Psychoeducation with Roleplay on Knowledge of Physical Violence and Bullying Prevention in Adolescents in Junior High School

The Effect of Psychoeducation with Roleplay on Knowledge of Physical Violence and Bullying Prevention in Adolescents in Junior High School

Emotional Literacy Training Using Role-Playing Techniques for Junior High School Students

The ability to recognize and effectively communicate emotions, referred to as emotional literacy, is crucial for interpersonal success and psychological health. This study aimed to enhance the emotional literacy of adolescents in junior high school through the application of role-playing techniques within guidance and counseling services. Employing a quantitative methodology, this research adopted a pretest-posttest experimental design to evaluate the effectiveness of these interventions. A total of eight respondents participated in the study. The emotional literacy scale served as the primary instrument for measuring changes in emotional literacy levels. Data were analyzed using the non-parametric Wilcoxon signed-rank test. The findings revealed that role-playing significantly improved the emotional literacy of the participants. These results have important implications for school counselors, suggesting that incorporating role-playing techniques into counseling sessions can be an effective strategy for fostering emotional development among students. This research underscores the potential of targeted educational interventions in enhancing emotional literacy, which can contribute to better emotional management and healthier adolescent development.

The Impact of Online Learning During The Covid 19 Pandemic on Mental Changes of Adolescents in Junior High School 1 Blitar

The COVID-19 pandemic in Indonesia occurred in March 2020 and is increasing throughout Indonesia. Based on this, the Ministry of Education and Culture of the Republic of Indonesia held online-based learning in the context of preventing the spread of COVID-19. Online learning from home, causes many students to complain, so it is possible to cause problems with mental changes in adolescents, such as depression, anxiety and stress. The purpose of this study was to analyze the impact of online learning during the COVID-19 pandemic on the mental changes of adolescents at SMPN 1 Blitar. This type of research is correlational with a cross sectional approach with a sample of 76 respondents at SMPN 1 Blitar using proportional random sampling technique and then analyzed using the Pearson Product Moment test. Data collection using the DASS42 questionnaire. The results showed that the impact of online learning during the pandemic was 38.2% depression, 36.8% anxiety and 38.2% stress. Based on the results of the analysis, it is known that there is a significant relationship between online learning during the pandemic and the occurrence of depression in students with Pv = 0.001, anxiety with Pv = 0.000 and stress with Pv = 0.006. Therefore, researchers suggest that students should motivate students to generate interest in learning and must foster positive thinking in students so that their physical and mental health can be maintained properly.

The Effectiveness of "Kancani": An REBT-Based Web Application on Junior High Students' Subjective Well-Being

Abstract. The high prevalence of mental health issues among Indonesian adolescent students signifies persistently low levels of subjective well-being. Junior high school students tend to engage in negative thinking and experience a decline in positive feelings, contributing to mental health issues, as well as low life satisfaction. To address this, enhancing socio-emotional abilities such as emotion regulation, especially in dealing with irrational thoughts as the root of the problem, becomes crucial. This research aims to evaluate the effectiveness of the "Kancani" web app, which implements Rational-Emotive Behavior Therapy (REBT)-based interventions on the subjective well-being of junior high school adolescents. A quasi-experimental one-group pretest-posttest design was employed with 22 junior high school participants aged 12-15 who received the intervention for 2 weeks. The research instruments used were a 25-item Subjective Well-Being scale measuring positive affect (a = 0.861), negative affect (a = 0.861), and life satisfaction (a = 0.828). Data were tested using the paired samples t-test technique. Data were analyzed using paired samples t-test showed that the Kancani web app, with REBT-based interventions, effectively increased the subjective well-being of junior high school students, particularly in the aspects of positive affect and life satisfaction (p = 0.004 &lt; 0.05), although not significantly in reducing negative affect (p = 0.104 &gt; 0.05). Nevertheless, the improvement in the subjective well-being of students after the intervention is still reflected in the descriptive analysis of the mean differences, indicating an increase in positive affect and life satisfaction, as well as a decrease in negative affect.

Strategi Koping Remaja Mengatasi Kesepian

Loneliness is a mental health issue. The aim of this research is to understand how adolescents recognize, feel and overcome loneliness. The research was conducted using a descriptive qualitative approach, involving 38 adolescent (21 girls and 17 boys) who experienced loneliness in three junior high schools (SMP) in Pekanbaru. The data was obtained through online interviews using Google Form. Data analysis uses thematic analysis techniques. The results showed that junior high school adolescents used various coping strategies to overcome loneliness. The most commonly used strategy in grades 8 and 9 is focusing on emotions, while in grade 7 focuses more on problems. The results of this research provide an overview of loneliness and how to overcome it from an adolescent perspective so that it can help the process of counseling and therapy for loneliness in adolescents. Further research is needed to understand the factors that influence adolescents' coping strategies in overcoming loneliness.

Analyzing the Challenges and Opportunities in Raising Public Awareness About the Hazards of Natural Disasters Among Junior High School Students in Bandung Regency, Indonesia

Natural disasters pose a significant peril to the Indonesian community, especially the Bandung Regency. Due to the significant likelihood of calamities, it is crucial to enhance public consciousness, particularly among adolescents in junior high school, regarding the perils associated with natural catastrophes. The objective of this study is to examine the obstacles and possibilities of enhancing knowledge of natural disaster risks among middle school students in Bandung Regency. This study employs a qualitative methodology, utilizing a case study technique. The researchers gathered primary data by conducting interviews with junior high school students, instructors, and relevant stakeholders, in addition to making field observations. The research findings indicate that there are multiple obstacles to enhancing the level of awareness among junior high school students regarding the perils associated with natural disasters. These challenges encompass a deficiency in knowledge and comprehension concerning the hazards posed by natural disasters, limited availability of information and educational resources pertaining to disasters, indifference and a lack of concern towards natural disasters, as well as a dearth of proactive involvement from both educational institutions and parents. Nevertheless, this study has identified various avenues for enhancing the knowledge of junior high school students regarding the perils associated with natural calamities. These include incorporating disaster education into the school syllabus, employing information and communication technology (ICT) to disseminate information and educate about disasters, engaging students in simulation exercises and disaster response activities, and reinforcing the involvement of families and communities in fostering a culture of disaster awareness. Enhancing the knowledge and understanding of the potential hazards associated with natural disasters among junior high school students is a crucial measure to foster community resilience in the face of future calamities.

Analyzing the Influence of Social Media on Pro-Environmental Behavior via the Mediation of Pro-Environmental Knowledge and Attitudes among Middle School Students in Bandung Regency, Indonesia

Adolescents, even those in junior high school, have incorporated social media into their daily routines, making it an essential component of their lives. The objective of this study is to examine how social media influences the adoption of pro-environmental behavior among junior high school students in Bandung Regency, Indonesia, by mediating their pro-environmental knowledge and attitudes. This study employs quantitative methodologies via a survey-based approach. We administered questionnaires to a sample of 300 junior high school students in Bandung Regency to collect data. The questionnaire encompasses inquiries on social media use, pro-environmental knowledge, pro-environmental attitudes, and pro-environmental conduct. The research findings indicate that social media exerts a beneficial influence on the pro-environmental conduct of junior high school pupils. The statistically significant positive correlation coefficient (r = 0.35, p &lt; 0.01) supports the connection between the usage of social media and pro-environmental behavior. Pro-environmental knowledge and attitudes influence the connection between social media use and pro-environmental behavior, as revealed by mediation analysis. Consequently, social media enhances students' understanding and beliefs about the environment, thereby motivating them to engage in environmentally friendly actions. The findings of this study demonstrate that social media can serve as a potent instrument for promoting pro-environmental conduct among adolescents in junior high school.

Sexual harassment exposure among junior high school students in Norway: prevalence and associated factors.

Sexual harassment is common in most countries and cultures. Less is known about sexual harassment, its risk factors, and psychosocial outcomes among young adolescents. The aim of the study was to examine the 12-month prevalence of sexual harassment exposure, and sociodemographic and psychosocial factors associated with exposure among junior high school students in Norway. A comprehensive cross-sectional study was completed by 83,297 Norwegian adolescents in junior high school in 2021. Data on exposure to sexual harassment were used in combination with sociodemographic measures and psychosocial outcomes: depressive symptoms, loneliness, self-esteem, and well-being. Group differences were analyzed with Chi Square tests, and sociodemographic risk factors were analyzed with logistic regression. Psychosocial outcomes were assessed with multivariate and univariate ANOVAs, and dose-response relationships were assessed with linear regression. Among the adolescents, 32.6% had experienced sexual harassment during the past year. Girls had higher odds of exposure (OR: 1.90, 95% CI: 1.84-1.96), whereas adolescents whose parents had higher education had lower odds (OR: 0.95, 95% CI: 0.90-0.99). Exposure was associated with higher levels of depressive symptoms (partial η2 [ES] = 0.11) and loneliness (ES = 0.07), and with lower self-esteem (ES = 0.06) and well-being (ES = 0.06). Among exposed adolescents, more frequent exposure was associated with poorer outcomes. Exposure to sexual harassment affects one third of junior high school students in Norway. Those who are exposed have poorer psychosocial outcomes, and there is a dose-response relationship between exposure and outcomes. Awareness of sexual harassment among young adolescents, and interventions to prevent and reduce it, are needed.

The role of internet parenting on internet addiction among adolescents

Various age groups have used the internet, including adolescents. Uncontrolled internet use can lead to psychological problems, such as internet addiction. One of the factors causing internet addiction is the lack of parental mediation in adolescents' internet activities, but some previous studies related to internet parenting showed inconsistent results. This study aims to determine the effect of internet parenting on internet addiction among junior high school adolescents in Yogyakarta. It is a quantitative survey study using the Indonesian version of the Internet Addiction Test scale (a=0.888) and the Internet Parenting scale (a=0.921). The data were collected from 171 junior high school students in Yogyakarta (ages 12-17) by online questionnaire and analyzed using linear regression in JASP 0.17.1. The research findings show an insignificant predictor of internet parenting to internet addiction (F=0.045, P=0.833 0.05). This shows that although internet parenting may have a role in preventing internet addiction in adolescents, other factors such as peer influence should also be considered in explaining the phenomenon of internet addiction among junior high school adolescents in Yogyakarta.

Education Using Animated Videos and Leaflets on Preventing The Risk of Nomophobia in High School Adolescents

Background: Nomophobia is an experience due to not being able to use a mobile phone. Nomophobia can be caused by excessive use of mobile phones with a duration of 3 hours/day, and most of the sufferers are junior high school students. Purpose: To describe the effectiveness of education using animated videos and leaflets on preventing the risk of nomophobia among junior high school adolescents in South Jakarta.Methods: Quasi-experimental with a pretest-posttest used in control group to determine the effectiveness of adolescent education with the risk of nomophobia at SMPN 218 Jakarta and SMP PGRI 12. The sample size was 45 respondents.Results: There was a significant difference in reducing the risk of nomophobia before and after interventions, in the intervention group with. A significant decrease also occurred between the intervention group and the control group before and after the intervention with a difference mean score (6.33 points). The difference between the two groups was substantially significant to the possibility of reducing the incidence of nomophobia in adolescents with a value of p-0.041.Conclusion: Using different educational methods, such as inviting respondents to do positive thing to reduce the perceived gadget addiction.

Dietary Diversity in Adolescents at State Junior High School 4 Depok, Sleman Regency, Yogyakarta: A Descriptive Study

&lt;p&gt;&lt;strong&gt;Adolescents require balanced nutrition for their future growth and development. Adolescence is a time when there is a high risk of weight gain, especially in eating habits. A diverse diet for adolescents makes it easier to fulfill their need for various nutrients. This study aims to describe the dietary diversity of adolescents in state junior high school 4 Depok, Sleman Regency, Yogyakarta. This research was quantitative, using an analytic observational approach and a cross-sectional design. A purposive sampling technique was used to select 41 respondents. IDDS (Individual Dietary Diversity Scores) was used to measure dietary diversity based on nine food groups such as starch; green vegetables; vitamin A-rich fruits and vegetables; other fruits and vegetables; organ meats; fish, meat, and other processed meats products; legumes, nuts, and seeds; and dairy products. The majority of the adolescents, i.e. 21 individuals (51.2%), had a medium dietary diversity, while the remaining 20 individuals (48.8%) had a low dietary diversity. The adolescents consumed mainly starch (staple foods), other fruits and vegetables; eggs; fish, meat, and processed products; and dairy products. Adolescents from state junior high school 4 Depok Sleman Yogyakarta were mainly classified as having medium dietary diversity.&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt; &lt;/strong&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Keywords: adolescents, dietary diversity, school age&lt;/strong&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;

The Influence of Emotional Demonstration on the Smoking Behavior of Junior High School (SMP) Adolescents in South Sinjai District, Sinjai Regency

Purpose: This research aims to determine the influence of emo demonstrations on smoking behavior among junior high school (SMP) teenagers in Sinjai Selatan District, Sinjai Regency (Theory of Planned Behavior Approach).&#x0D; Method: This research used a research method, namely quantitative research using a quasi-experimental design with a nonequivalent control group design. The location of research and sampling was in the Sinjai Regency area. Samples were taken using the Accidental Sampling technique with as many as 250 respondents from the intervention and control groups. Analysis was carried out using the paired sample T test if the data was normally distributed and if the data was not normally distributed then the Wilcoxon test.&#x0D; Results: Show that knowledge (p=0.319 to p=0.689), attitude (p=0.032 to p=0.004), subjective norms (p=0.000 to p=0.087), and behavioral control (p=0.000 to p=0.003).&#x0D; Conclusion: It can be said that there is no change in knowledge and subjective norms in junior high school (SMP) teenagers in South Sinjai District regarding smoking behavior after being given emotional demonstration education and there is a change in attitude and behavioral control in junior high school (SMP) teenagers in Sinjai District South regarding smoking behavior after being given emotional demonstration education.

PELATIHAN PENULISAN KREATIF DALAM MENINGKATKAN KETERAMPILAN DI DESA SINDANGSARI

Writing activities are basically good activities for children to do. By writing, children's creativity can be increased and a child is like immersing himself in the creative process which means the child creates something which also means asking questions, experiencing doubts and confusion until finally finding a solution. And when the creative process is increasingly practiced, it becomes easier for children to transfer their skills to other fields that also require creative solutions, such as school and other activities. From the results of observations of junior high school children and adolescents in the village of Sindangsari, Cabangbungin District, Bekasi Regency. has a high interest in reading short stories and is quite interested in trying to write stories, but there are still some children who have minimal interest in reading and writing, therefore the writer is interested in helping them develop their abilities and express feelings through writing stories in the service of the writer's KKN It is hoped that it can attract children's interest and motivation to write by using an approach that emphasizes the importance of the learning process for students, namely Story Telling or Reading stories, and Writing Training.

Effects of Taekwondo Poomsae Training on Lower Limb Reaction Ability and Balance Performance in Adolescents

&lt;p&gt;背景：學習跆拳道運動有助於兒童與青少年成長與體適能表現，但學習跆拳道品勢的研究較少，因此本研究希望了解學習跆拳道品勢訓練後的身體適能表現。目的：探討從事8週跆拳道品勢訓練後，對國中少年下肢爆發力、反應能力與平衡能力的影響。方法：招募未有運動習慣及跆拳道訓練經驗之男性國中生16名，隨機分配實驗組 (n = 8)(參與學校體育課程+跆拳道品勢訓練)，控制組 (n = 8)(學校體育課程)，進行8週的訓練課程。訓練前後進行身高體重及腿長測量、動態平衡能力、反應能力及下肢爆發力的測驗，並以混合設計二因子變異數分析，比較兩組別反應能力與平衡能力之差異，當交互作用達顯著時，以LSD法進行事後比較。以獨立樣本t檢定考驗實驗組與訓練組進步百分比是否有達顯著性，並以皮爾森績差相關分析與受試者下肢平衡能力與反應能力的相關性。結果：實驗組與控制組在爆發力與平衡表現上組別因子上達到顯著差異 (p &lt; .05) 且實驗組與控制組進步百分比也達顯著差異 (p &lt; .05)。反應能力組別因子與時間因子未達顯著差異 (p &gt; .05)，進步百分比也未達顯著差異 (p &gt;.05)。訓練前反應能力與平衡表現為低度相關 (r = .352 , p = .10)，訓練後反應能力與平衡表現之間達中度相關 (r = .665，p &lt; .05)。結論：跆拳道品勢訓練可以顯著提升國中少年的下肢爆發力與下肢平衡能力。爆發力、反應能力、平衡表現進步幅度都大於控制組。訓練後反應能力與平衡表現之間存在相關性，可能是跆拳道品勢訓練提升了學童身體協調與感覺統合。未來可針對不同跆拳道訓練方式與不同年齡層了解訓練與身體發展的差異。&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Background: Learning Taekwondo can contribute to the growth and physical fitness performance of children and adolescents. However, there is limited research on learning Taekwondo Poomsae. Therefore, this study aims to understand the impact of learning Taekwondo Poomsae on physical fitness performance. Purpose: The purpose of this study was to investigate the effects of 8 weeks of Taekwondo Poomsae training on lower limb explosive strength, reaction ability, and balance in junior high school adolescents. Methods: Sixteen male junior high school students with no prior sports experience or Taekwondo training were recruited. The participants were randomly assigned to either the experimental group (n = 8) (participating in school physical education classes plus Taekwondo Poomsae training) or the control group (n = 8) (participating only in school physical education classes). Both groups underwent an 8-week training program. Before and after the training, all participants underwent measurements of height, weight, leg length, dynamic balance ability, reaction ability, and lower limb explosive strength. The participants’ data were analyzed using a mixed-design two-factor analysis of variance to compare the differences in reaction ability and balance ability between the two groups. When the interaction effect was significant, post hoc comparisons were performed using the LSD method. Independent sample t-test was used to test the significance of improvement percentage between the experimental and control groups. Pearson correlation analysis was used to examine the relationship between lower limb balance ability and reaction ability. Results: The experimental group showed significant differences in explosive strength and balance performance compared to the control group (p &lt; .05). Moreover, the improvement percentages in both explosive strength and balance performance were significantly different between the two groups (p &lt; .05). However, there were no significant differences in reaction ability between groups or in the improvement percentage (p &gt; .05). Before the training, there was a low correlation between reaction ability and balance performance (r = .352, p =.10). After the training, there was a moderate correlation between reaction ability and balance performance (r = .665, p &lt; .05). Conclusion: Taekwondo Poomsae training can significantly improve lower limb explosive strength and balance in junior high school adolescents. The improvement in explosive strength, reaction ability, and balance performance was greater in the experimental group than the control group. The correlation between reaction ability and balance performance after training suggests that Taekwondo Poomsae training may enhance the students’ body coordination and sensory integration. Future studies could explore the differences in training and physical development across different Taekwondo training methods and age groups.&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;