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Biomechanical Analysis of Tennis Spin Serve Technique Using Kinovea in Beginner Athletes in South Sulawesi Ians Aprilo; Poppy Elisano Arfanda; M. Adam Mappaompo; Yusnadi; Andi Rizal; Hasbi Asyhari
Journal Physical Health Recreation (JPHR) Vol 5 No 2 (2025): Journal Physical Health Recreation (JPHR)
Publisher : Program Studi Pendidikan Jasmani Kesehatan dan Rekreasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55081/jphr.v5i2.3943

Abstract

This study aims to analyze the spin serve technique in novice tennis players, with an emphasis on trunk rotation and dynamic balance, using Kinovea motion analysis software. A total of 30 novice athletes, aged 14–16 years, from South Sulawesi, became the subjects in this study. Data were collected through high-speed video recording from three angles and analyzed using Kinovea to observe seven stages of tennis court service, namely: coiling, ball toss, backswing, uncoiling, strike zone, follow-through, and fall-in. The results showed that the effective spin serve technique is greatly influenced by optimal trunk rotation with an average of 8.32 and good dynamic balance with an average of 72.03. These findings indicate that players with proper trunk rotation and balance tend to produce more accurate and powerful serves. Kinovea has been proven effective as an objective tool in evaluating the quality of the spin serve technique.
Analysis Of Ketone Formation In The Urine Of Futsal Players Following A Simulated Match Using Ketostix Wahid, Wahyana Mujari; Arimbi; Arifuddin Usman; Rusli; Poppy Elisano Arfanda
Journal Physical Health Recreation (JPHR) Vol 5 No 2 (2025): Journal Physical Health Recreation (JPHR)
Publisher : Program Studi Pendidikan Jasmani Kesehatan dan Rekreasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55081/jphr.v5i2.3948

Abstract

High-intensity physical activity such as futsal predominantly relies on the anaerobic energy system and has the potential to trigger the formation of ketone bodies as an alternative energy source. While studies on ketones often focus on fasting, ketogenic diets, or metabolic diseases, research on ketone formation due to intense physical activity remains limited. This study aimed to analyze the formation of urinary ketones in futsal players following a simulated match and to assess the distribution of ketone levels produced. This descriptive observational study involved 22 male futsal players aged 18–25 years. Subjects underwent a simulated futsal match (2 × 20 minutes with a 10-minute halftime break). Urine samples were collected approximately 10 minutes post-match and analyzed using Ketostix to detect urinary ketone levels, classified as negative, mild, moderate, or high. All players tested positive for urinary ketones. A total of 90.9% exhibited mild ketonuria (0.5 mmol/L), 9.1% showed moderate ketonuria (1.0 mmol/L), and no cases of severe ketonuria were observed. These findings indicate that high-intensity futsal activity is sufficient to induce metabolic changes leading to ketogenesis. High-intensity futsal activity can stimulate endogenous ketone production as a response to glycogen depletion. Monitoring ketone levels may serve as an important indicator in designing training, recovery, and nutritional strategies in high-intensity sports. Further studies are recommended to explore the relationship between ketone levels, athletic performance, and metabolic risk in athletes.
Analysis of the Relationship between Anxiety Level and Smash Accuracy of Badminton Athletes Arimbi; Andi Ainun Zulkiah Surur; Poppy Elisano Arfanda; Wahyana Mujari Wahid; HarvinaMukrim; Chaerul Fadly Mochtar Luthfi
Journal Physical Health Recreation (JPHR) Vol 5 No 2 (2025): Journal Physical Health Recreation (JPHR)
Publisher : Program Studi Pendidikan Jasmani Kesehatan dan Rekreasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55081/jphr.v5i2.3966

Abstract

This study aims to analyse the relationship between anxiety level and smash accuracy in badminton athletes. Anxiety is one of the psychological factors that can affect athlete performance, especially in sports that require concentration and accuracy such as badminton. This study uses a quantitative approach with a correlational design. Data were collected through anxiety questionnaire and smash accuracy measurement through validated skill test. The results of the analysis show that there is a significant relationship between anxiety levels and athletes' smash accuracy. The higher the level of anxiety experienced by athletes, the lower the smash accuracy displayed, and vice versa. This finding indicates the importance of managing psychological aspects in athlete training to improve technical performance on the field.
The Impact of Aerobic Dance Intensity on Blood Pressure Reduction in Physically Active Elderly Women Poppy Elisano Arfanda; Ians Aprilo; Arimbi; Noortje Anita Kumaat; Heryanto Nur Muhammad
ACTIVE: Journal of Physical Education, Sport, Health and Recreation Vol. 14 No. 2 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/active.v14i2.28983

Abstract

This study aims to determine the relationship between aerobic dance intensity and blood pressure reduction in active elderly women who routinely participate in community exercise programs. The research design used is correlational with a quantitative approach. The sample consists of members of the aerobic dance community in Taman Pakui Sayang (TPS), Makassar, comprising 20 elderly women aged 45–59 years who participate in aerobic dance at least twice a week for 8 weeks. Data were collected through blood pressure measurements before and after the intervention, as well as monitoring exercise intensity using the Borg RPE (Rating of Perceived Exertion) Scale. The results of the analysis showed a significant negative correlation between aerobic dance intensity and a decrease in systolic with r = -0.62; p = 0.001 and diastolic (r = -0.55; p = 0.004) blood pressure. These findings indicate that the higher the intensity of the exercise performed, the greater the decrease in blood pressure that occurs. Thus, moderate to high intensity aerobic dance can be an effective non-pharmacological strategy in the management of hypertension in elderly women.