Jurnal Sains Keolahragaan dan Kesehatan

Exploring the Correlation Between Hamstring Strength and Vertical Jump Performance Among Firefighters

2026-02-09T13:38:20+07:00

Firefighting is a physically demanding occupation requiring high levels of

muscular strength and power to perform tasks such as victim rescue, stair climbing,

hose dragging, and equipment handling under unpredictable and hazardous

conditions. This study aimed to examine the relationship between hamstring muscle

strength and countermovement jump performance in firefighters. This study

employed a quantitative cross-sectional design. Participants were active-duty

firefighters who met the inclusion criteria. Total the participants are 43 with male

gender, the body weight of 73,83 ± 10,38 kg, height of 172,44 ± 4,68 cm, Body Mass

Index (BMI) was 24,79 ± 3,13 kg/m² . The results showed a significant relationship

between hamstring muscle strength and countermovement jump power. The

correlation between L Max Force and jump power was statistically significant (p =

0,002), as was the relationship between R Max Force and jump power (p = 0,001),

both below the significance threshold of <0,05. These findings indicate that greater

hamstring muscle strength is associated with higher CMJ power output. In

conclusion hamstring muscle strength is significantly related to lower-limb

explosive performance in firefighters.

Keywords: Hamstring muscle strength, jump power, physical fitness, firefighters

Trends and Developments in Research on Achievement Motivation in Student Athletes: Bibliometric Analysis

2026-03-03T16:07:53+07:00

Abstract

This study examines research trends on achievement motivation among student-

athletes using a bibliometric approach. Data were obtained from the Scopus

database, resulting in 146 journal articles published between 1982 and 2025. The

analysis covered publication trends, citation patterns, journal productivity, and

keyword co-occurrence. Results show a significant increase in publications after

2010, with a peak in 2024. Citation analysis reveals that a small number of highly

cited studies dominate the field, indicating concentrated academic influence.

Keyword mapping identifies major themes such as achievement motivation, sport

performance, and student-athletes, with emerging topics related to psychological

and contextual factors. This study provides a comprehensive overview of research

development and identifies gaps and future research directions in sport psychology.

Keywords: achievement motivation, student athletes, sport psychology, sport

performance, bibliometric analysis.

BIBLIOMETRIC ANALYSIS: MAPPING RESEARCH TRENDS ON TEAM COHESIVENESS IN SPORTS

2026-04-10T11:34:35+07:00

This study presents a bibliometric analysis of research trends on team cohesion in

sports. Data were retrieved from the Scopus database, covering 288 journal articles

published between 1992 and 2024. The analysis examined publication trends,

citation patterns, influential articles, leading journals, and keyword structures. The

findings indicate a significant increase in research output after 2016, with a peak

in 2024, highlighting team cohesion as a key psychosocial construct associated with

performance, group dynamics, and athlete functioning. Keyword mapping

identified four major thematic clusters: performance, group dynamics,

methodology, and athlete characteristics. This study provides a comprehensive

overview of the intellectual structure of team cohesion research and offers

directions for future studies and practical applications in sport psychology.

Keywords: team cohesion, sports psychology, sports performance, athletes,

bibliometric analysis

Mental Imagery Effects on Athletes' Mental Toughness and Sports Performance: A Bibliometric Review

2026-05-03T22:56:18+07:00

Abstract

This study aims to systematically map the development of research on mental

imagery in relation to athletes’ mental toughness and sports performance using a

bibliometric approach. Data were obtained from the Scopus database, resulting in

183 journal articles published between 1977 and 2025. The analysis includes

publication trends, citation structures, journal productivity, and keyword co-

occurrence mapping using VOSviewer and RStudio.The results show a substantial

increase in research output after 2010, with more than 40% of total publications

produced after 2020, and a peak in 2023 with 17 articles. Citation analysis

indicates that a limited number of highly cited studies dominate the field, reflecting

a concentrated pattern of scientific influence. Keyword co-occurrence analysis

identifies mental imagery as a central construct linking performance enhancement,

psychological regulation, and injury rehabilitation, with four main thematic

clusters. This study addresses the fragmented nature of previous research by

providing an integrated bibliometric mapping of mental imagery studies across

performance and psychological domains. The main contribution lies in identifying

research trends, intellectual structures, and emerging directions, particularly in

technology-based interventions and longitudinal approaches in sport psychology.

Keywords: mental imagery, mental toughness, sports performance, athletes,

bibliometric analysis.

The Effect of Archery Activities on Concentration Levels in Elementary School Children

2026-04-21T16:23:13+07:00

Abstract

Concentration is an important skill for elementary school children to support their

learning success. This study aims to determine the effect of archery activities on the

concentration levels of elementary school children. The research method used was

a pre-experiment with a pretest and posttest one-group design. The research sample

consisted of 15 children at SDN Duren Tiga 14 South Jakarta. Concentration levels

were measured using the Concentration Grid Test (CGT). The results of the

analysis showed a significant increase in concentration scores, with a pretest

average of 2.33 and a posttest average of 9.47. Archery activities were proven to

be effective in improving the concentration of elementary school children at SDN

Duren Tiga 14, South Jakarta. Archery can be used as a means of cognitive

stimulation in schools to improve children's concentration.

Keywords: archery activities, archery sports, concentration.

nd a posttest average of 9.47. Archery activities were proven to be effective in improving the concentration of elementary school children at SDN Duren Tiga 14, South Jakarta. Archery can be used as a means of cognitive stimulation in schools to improve children's concentration

The Contribution of the Physical Fitness Component to the Accuracy of Volleyball Smash in Physical Education Students of Pamulang University

2026-04-21T15:32:12+07:00

Abstract

The accuracy of smash in volleyball is influenced by various components of

physical fitness, but the specific contribution of each component to physical

education students has not been widely studied. This study aims to identify the

contribution of leg muscle explosiveness, eye-hand coordination, and agility to the

accuracy of volleyball smash. The research uses a correlational quantitative

approach involving forty students of the Physical Education Study Program,

Pamulang University who were selected through purposive sampling. Data

collection was carried out through a vertical jump test, a ball throw to a wall test,

an Illinois agility test, and a validated smash accuracy test. The data was analyzed

using simple regression analysis and multiple regression with a significance level

of five percent. The results showed that the explosiveness of the leg muscles

contributed 55.1%, eye-hand coordination 66.6%, and agility 38.8% to the

accuracy of the smash. Simultaneously, all three components contribute 77.1% to

the accuracy of volleyball smash. Hand-eye coordination proved to be the most

dominant predictor. These findings provide practical implications for the design of

exercise programs that focus on developing physical fitness components holistically

to optimize the smash abilities of physical education students.

Keywords: leg muscle explosiveness, eye-hand coordination, agility.

Physical Fitness Profile of Elite Wheelchair Fencing Athletes: A Descriptive Study of Biomotor Components

2026-04-26T11:55:21+07:00

Abstract

Wheelchair fencing is an adaptive sport that emphasizes the use of upper limbs in a

static sitting position, and to date, there is still relatively limited study examining its

physical condition profile comprehensively. This study aims to describe the physical

condition profile of elite wheelchair fencing elite athletes based on the main biomotor

components. The study method used is descriptive quantitative with a cross-sectional

approach. The study subjects consisted of 8 athletes, including 5 male athletes and 3

female athletes. Physical condition measurements included shoulder flexibility,

shoulder muscle endurance, right and left hand grip strength, hand reaction speed, and

aerobic capacity (Aeerobic capacity). Data analysis was performed using descriptive

statistics in the form of average values. The results showed that Aeerobic capacity

values were 43.5 ml/kg/minute in male athletes and 36.1 ml/kg/minute in female athletes.

Shoulder flexibility values were 112 cm in male athletes and 63 cm in female athletes,

and shoulder endurance was 56 seconds in male athletes and 17.75 seconds in female

athletes. In addition, the right hand grip strength value was 44.3 kg in male athletes and

17.1 kg in female athletes, and the left hand was 24.3 kg in male athletes and 18.1 kg in

female athletes. The hand reaction value was 150 ms in male athletes and 175 ms in

female athletes. The conclusion of the study shows that the physical condition profile of

elite wheelchair fencers is at a varying level between biomotor components, with

aerobic capacity and grip strength being relatively better than flexibility and reaction

speed. These results can be used as a basis for developing a more specific training

program and in accordance with the demands of the sport of wheelchair fencing.

Keywords: biomotor, physical fitnes, wheelchair fencing.

Physical Fitness Norms For Prospective Regional-Level Pencak Silat Referees: A Battery Test Approach In Serang City

2026-05-08T21:00:29+07:00

Abstract

The assessment of pencak silat referee competence has long been dominated by

technical and theoretical evaluations, yet it lacks standardized objective physical

fitness parameters, particularly for the novice category. This study aims to develop

physical condition battery test norms as a biological evaluation instrument for

prospective regional-level referees in Serang City in 2026. Employing a

quantitative descriptive design, the study involved 21 novice referees selected via

total sampling. Data were collected through five measurement dimensions:

Multistage Fitness Test (MFT), Whole Body Reaction (WBR), Balance, Push Up,

and Vertical Jump. The conversion procedure involved aggregating raw scores

from all instruments, which were subsequently classified using a 5-point scale

Norm-Referenced Assessment (PAN) based on the Mean (22.9) and Standard

Deviation (7.8). The results established five physical readiness categories:

Excellent (Score ≥ 35), Good (27-34), Average (19-26), Poor (12-18), and Very

Poor (≤ 11). These findings provide an evidence-based selection framework that

enables the IPSI Serang City Branch to validate the physical readiness of referees

objectively prior to official championship assignments.

Keywords: fitness norms, battery test, referee, pencak silat, physical condition.

Anthropometric Profile and Physical Condition of Young Futsal Athletes Reviewed from a Sports Physiology Perspective

2026-05-08T10:43:56+07:00

This study aims to analyze the anthropometric profile and physical condition of adolescent futsal athletes and relate them to aspects of sports physiology. The method used is descriptive quantitative with 10 futsal athletes aged 14–16 years as research subjects. The instruments used include anthropometric measurements (weight, height, and body mass index/BMI), speed (20-meter sprint), power (vertical jump), strength (wall sit, push-up, sit-up), and cardiorespiratory endurance (12-minute Cooper test). Data analysis was carried out using descriptive statistics in the form of minimum, maximum, average, and standard deviation values. The results showed that the average BMI of athletes was 18.94 kg/m² in the normal category. The speed component had an average of 3.32 seconds (moderate category), power was 42.20 cm (moderate category), muscle strength showed varying results with moderate to good categories, and cardiorespiratory endurance was 2216 meters (moderate category). Physiologically, these results indicate that futsal athlete performance is influenced by the interaction of the anaerobic, aerobic, and neuromuscular energy systems. The study concluded that the athletes' general physical condition was moderate to good, but improvements in aerobic endurance and muscle power were still needed. Therefore, it is recommended to implement exercise physiology-based training programs such as high-intensity interval training (HIIT) and plyometric training to optimally improve the performance of adolescent futsal athletes.

Keywords: anthropometry, physical condition, futsal, sports physiology.

The Evolution and Knowledge Structure of Sport-Based Corporate Social Responsibility (CSR): A Bibliometric Analysis using Scopus Database

2026-05-28T07:59:53+07:00

Abstract

Research on sport-based Corporate Social Responsibility (CSR) has developed

rapidly and is no longer understood merely as a social activity but also as part of

a sports organization’s sustainability strategy. This study aims to map the

development, knowledge structure, and main themes in sport-based CSR research.

The study employs a bibliometric analysis method using data from the Scopus

database consisting of English-language journal articles from 2009 to 2025. The

analysis was conducted using Microsoft Excel and VOSviewer to identify

publication trends, productive authors, leading journals, and keyword network

visualizations. The results indicate that publications on sport-based CSR have seen

a significant increase, particularly after 2015, in line with growing attention to the

Sustainable Development Goals (SDGs). The most dominant research themes relate

to environmental sustainability, sports organization management, consumer

behaviour, and organizational governance. Furthermore, the analysis indicates

that sport-based CSR research is dominated by developed countries and focuses on

sustainability issues within the sports industry. The study’s conclusions suggest that

sport-based CSR research is evolving toward a more strategic and sustainability-

oriented approach. This study is expected to serve as a reference for future sport-

based CSR research.

Keywords: bibliometric analysis, SDGs, sport-based CSR, sport management,

VOSviewer.