Core Stability Tests Research Articles

Comparative Impact of Core Stabilization vs Proprioceptive Neuromuscular Facilitation Exercises on Muscle Activation, Endurance, and Balance in Obese Children: A Randomized Controlled Trial.

BACKGROUND The purpose of the study was to compare the effects of core stabilization exercise (CSE) and proprioceptive neuromuscular facilitation (PNF) exercise on core muscle activation, core muscle endurance, proprioception, and balance in 80 obese children. MATERIAL AND METHODS In this single-blind, randomized controlled study, 80 obese children aged 10-13 years were randomly divided into 3 groups. The first group received CSE (n=27) and the second group received PNF exercises (n=27) 3 days a week for 8 weeks. The third group, which was the control group (n=26), received no treatment. Participants were evaluated before treatment (BT) and after treatment (AT) and at follow-up (3 months after treatment). Core muscle activation level was evaluated by Sahrmann Core Stability test (SCST), lumbar core muscle endurance was evaluated by McGill core endurance tests, and lumbar joint position sense (JPS) was evaluated by laser cursor. The single-leg standing balance test (SLSBT) and Y balance test (YBT) were used for static and dynamic balance, respectively. RESULTS AT and at follow-up, core activation, core endurance, JPS, and static balance were significantly different between the groups (P<0.05). There was no significant difference between the groups in YBT dominant and non-dominant side mixed reach distances (P>0.05). Clinical effect sizes were higher in the CSE group for all outcome measures. CONCLUSIONS CSE and PNF exercises improve the level of core muscle activation, lumbar core muscle endurance, lumbar JPS, and balance in obese children. However, the results of this study show that CSE are more clinically effective in obese children. The effects decline in the medium term.

The Effect of Sportsmetrics Program on Dynamic Knee Valgus, Core Endurance, and Postural Stability in Soccer Female Athletes With Dynamic Knee Valgus

Background and Aims The most important risk factors for knee injuries include weakness in core stability, poor postural stability, and excessive dynamic valgus of the knee. One of the most successful protocols for preventing knee injuries in female athletes is specialized sportsmetrics soccer training. It seems that the effect of this protocol on the core stability of female soccer players with knee valgus has not been studied. Methods In the present study, 24 footballers with knee valgus in the training (12 people) and the control (12 people) groups participated in specialized sportsmetrics soccer training and regular pre-season exercises for six weeks, respectively. The tests consisted of a core stability test (trunk flexor, trunk extensor, right side bridge, and left side bridge), postural stability (Y balance), and dynamic knee valgus (during the scoring of landing error test). Results Analysis of covariance was used to analyze the data (P≤0.05) in SPSS software, version 25. The results showed a significant improvement (P=0.01) in postural stability (from 105.2 to 116.7 cm), core stability (from 38.2 to 41.1 s), and knee valgus (from 25.3 to 12.4 degrees). Conclusion According to the results of the study, the present protocol, which is designed to prevent knee injuries in female soccer players, modifies all three risk factors for knee injuries (weakness in core stability, poor postural stability, and knee valgus). Therefore, this protocol is recommended for all female soccer players with dynamic knee valgus.

Effects of core stability and feedback music on upper body mediolateral movements during cycling

BackgroundAsymmetry in involuntary trunk motion during voluntary movements of the lower extremities is a risk factor for musculoskeletal injuries and may be related to core stability. Core stability plays a pivotal role in maintaining postural stability during distal segment movements. Because mediolateral head motion partially represents trunk motion during rhythmic movements, controlling it can help ensure symmetric trunk motion. This study aimed to investigate the relationship between core stability and asymmetric trunk motion during rhythmic movements, and to evaluate the effects of feedback music on mediolateral head motion.MethodsWe developed a system that uses a wireless earbud and a high-resolution inertial measurement unit sensor to measure head angle and provide feedback music. When the head angle exceeds a predefined threshold, the music is muted in the earbud on the side of the head tilt. In our lab-based study, we measured head angles during cycling at 70% of maximum speed using this self-developed system, and compared them between individuals with good (Sahrmann core stability test: 2–5 level) and poor core stability (0–1 level). The amplitude of mediolateral head motion was represented by the difference between the left and right peak angles, and the symmetry in mediolateral head motion was represented by the average of left and right peak angles.ResultsIndividuals with poor core stability demonstrated significantly greater amplitude of, and less symmetry in, mediolateral head motion than those with good core stability. Additionally, feedback music significantly reduced the amplitude of mediolateral head motion in both the good- and poor-core-stability groups.ConclusionOur findings indicate that core stability is crucial for maintaining symmetric head motion during rhythmic movements like cycling. Feedback music could serve as an effective tool for promoting symmetry in head motion and thus preventing musculoskeletal injuries.

Evaluation of Core Stability and Foot Kinematics of Taekwondo Athletes

To score in taekwondo competition requires faster kicking. Among the factors that influence kicking velocity, core stability is important, but the relationship between core stability and kicking velocity in taekwondo is unclear. The aim of this study was to investigate the association between core stability and foot segmental COM velocity at the moment of kick. A total of 13 taekwondo instructors (gender: male, height: 172.6±7.3 cm, weight: 64.3±11.78 kg, age: 29±4 years) participated in this study. The center of mass velocity of the left foot segment at the moment of the kick and the level of core stability was measured using the Sahrmann core stability test. During the Naraechagi, the velocity of the foot segment COM relative to the laboratory origin at the moment of the aerial phase kick was positively correlated in the forward and backward directions X-axis. Moderate correlation in the left and right direction Z-axis. Very strong correlation in the up and down direction Y-axis. Through the current experiment, we found a strong correlation between core stability and kicking speed in the forward and backward and up and down directions. Therefore, we believe that adding core stability training to taekwondo training has the potential to increase kicking speed.

Lower limb squat biomechanics and select clinical measures in chronic ankle instability

BackgroundIndividuals with chronic ankle instability often present with clinical and biomechanical abnormalities, however squat biomechanics have not been investigated. The purpose of this study was to compare select clinical assessments and squat biomechanics between individuals with and without chronic ankle instability. MethodsFifteen individuals with chronic ankle instability and a matched control group were studied. A weight-bearing dorsiflexion lunge test, foot posture, and an in-line half-kneeling motor control test for core stability were assessed. Lower limb 3D bilateral and unilateral squat biomechanics were captured. Groups, limbs and squat tasks were compared using an alpha of 0.05. FindingsIndividuals with chronic ankle instability had less static weight-bearing dorsiflexion and failed the core stability test more frequently, but did not differ in foot morphology compared to the controls. When squatting, those with chronic ankle instability demonstrated reduced peak ankle dorsiflexion angles and moments in the involved limb (p < 0.04) during single limb squats and had interlimb differences in ankle dorsiflexion angle as well as hip and knee kinetics (p < 0.04) during double limb squats. In those with chronic ankle instability, there was less overall motion, but higher kinetic demands in single limb versus double leg squatting (p < 0.03). InterpretationIndividuals with chronic ankle instability had impaired weight-bearing dorsiflexion and showed impaired core stability more often, which accompanied altered squatting mechanics in both variations. Within the limbs with chronic ankle instability, single limb squats showed lesser kinematic demands but higher kinetic demands than double limb squatting.

Relationship Between Lumbosacral Alignment and Lumbar Motor Control Determined by the Sahrmann Core Stability Test in Adolescents With Lumbar Spondylolysis

Relationship Between Lumbosacral Alignment and Lumbar Motor Control Determined by the Sahrmann Core Stability Test in Adolescents With Lumbar Spondylolysis

Pilates Egzersizlerinin Gebelikte Postüral Stabilite ve Doğum Korkusu Üzerine Etkisinin Araştırılması

Objective: Physiological and psychological changes are observed in the female body during pregnancy. These changes can lead to some changes that can affect the pregnancy process in women. Our study aims to understand how pilates training affects core stability, balance, and fear of childbirth levels in pregnant women. Method: In our randomized controlled study, fifty-eight volunteer pregnant women aged 18-35 years, who completed the first 12 weeks of pregnancy, 31 in the Pilates and 27 in the control group, were included. The Pilates group was given pilates exercises for eight weeks, two days a week, 1 hour a day, by a physiotherapist. An 8-week home program consisting of breathing exercises was given to the control group. Core stability, balance, and fear of birth were assessed before and after eight weeks of training. Results: Statistically significant improvements were observed in the Sahrman Core stability test scores in the Pilates group (p&amp;lt;0.05), while a decrease was observed in the control group results (p &amp;lt; 0.05). Postural stability was preserved in the Pilates group even improved in the right foot test (p&amp;lt;0.05). No change was observed in the control group (p &amp;gt; 0.05). When the The Wijma Delivery Expectancy/Experience Questionnaire A measurement results were compared, a statistically significant difference was found in favor of the pilates group with a large effect size (F=27.693; p&amp;lt;0.001, ηp2=0.374). Conclusion: The results showed that pilates exercises applied during pregnancy could improve women's core stability and balance levels and reduce their fear of childbirth.

Effects of Yoga Training Applied with Telerehabilitation on Core Stabilization and Physical Fitness in Junior Tennis Players: A Randomized Controlled Trial

Introduction: This study aimed to investigate the effects of yoga training applied with telerehabilitation on core stability, and strength, balance, flexibility, upper extremity stability, body awareness, and quality of life in tennis players aged 6–18 years. Methods: Forty tennis players were randomly divided into two groups to participate in this study. The control group (n = 20) continued tennis training and was informed about the importance of the core region. The yoga group (n = 20) received yoga training with telerehabilitation 2 days a week for 8 weeks. Athletes were evaluated with sport-specific core muscle strength and stability tests, the back scratch test, the sit and reach test, the flamingo balance test, the y-balance test (lower quarter), the upper extremity closed kinetic chain stability test, the SF-36, and body awareness questionnaires. Measurements have been done in the tennis club before and after the 8 weeks of training. Results: A significant increase was determined in core strength and stability, sit and reach, back scratch test, upper extremity stability, and body awareness questionnaire in the yoga group (p < 0.001). Flamingo and Y balance test results were significant (p < 0.002). Positive improvements were found in SF-36s energy-fatigue level, mental well-being, social function (p < 0.042), pain (p < 0.005), and general health (p < 0.001). A significant increase was observed in the core strength measurement mean score in the control group (p < 0.018). Sit and reach test, flamingo test, and body awareness questionnaire were found to be significant after the intervention (p < 0.001). Significant improvements were found in the pain (p < 0.042), and mental well-being (p < 0.001) sub-parameters of the SF-36. Conclusion: In the study, it was concluded that yoga training applied with telerehabilitation in tennis players aged 6–18 has a positive effect on core strength, and stabilization, physical fitness parameters, quality of life, and body awareness.

The Impact of Core Complex Training on Some Basketball-Related Aspects of Physical Strength and Shooting Performance.

Exercises for the core can be categorized as promoting core-stability, core-strength, or functionality, as these are crucial aspects of most sports activities. This study aimed to examine the effects of using core complex training (CCT), complex training (CT), and core exercise (CE) on some aspects of muscle strength and shooting performance in basketball players. The 36 participants were divided into three groups of 12 each, and then the experimental approach was applied to each group. The groups were labeled as follows: the core complex training group (N = 12; age, 18.58 ± 0.67 years; height, 178.08 ± 0.79 cm; weight, 76.42 ± 1.38 kg; training age, 7.42 ± 0.51 years); the complex training group (N = 12; age, 18.50 ± 0.52 years; height, 177.92 ± 1.31 cm; weight, 76.67 ± 1.78 kg; training age, 7.33 ± 0.49 years); and the core exercise group (n = 12; age, 18.42 ± 0.52 years; height, 177.75 ± 1.29 cm; weight, 76.58 ± 1.38 kg; training age, 7.42 ± 0.67 years). For ten weeks, each of the three groups participated in three training sessions every week. This study investigates the impact of core complex training on basketball shooting ability and muscle strength. The eight-week program, consisting of weight training, plyometric exercises, and core exercises, yielded improvements in muscle strength and shooting accuracy. In tests of muscular strength and basketball shooting ability, the CCT group outperformed the CE and CT groups. The F value varied from 3.75 to 58.77, which are function values with a p < 0.05 significance level. The core complex training group exhibited superior muscle strength to that of both the complex training group and the core exercise group, in some areas. This is shown in the results of the javelin quadrathlon medicine ball test, the core muscle strength and stability test, the sit-up abdomen test, the sit-up back test, the standing long jump test, the Sargent jump test, and the shooting test (p < 0.005). Due to the effect of the core complex training program on improving performance efficiency and muscle strength, which affects the results of matches, we have recommended using the proven basic strength training program at other age stages, with the objective of including the concept, importance, and design of compound basic strength training in training programs used by basketball coaches.

Correlation between Physical Fitness and Concentration of Gymnastics Athletes

The purpose of the study was to examine the correlation between physical fitness and the concentration of West Java gymnastics athletes. The method used in this research was descriptive quantitative method with correlational design. The sampling technique used in this study was purposive sampling, involving seventeen young athletes (9 women and 8 men; age 19.71 ± 4.22 years, height 1.57 ± 0.07 m, body mass 52.4 ± 7 .58 kg) who were members of PPLP (Student Sport Education and Training Center) and Pelatda (Regional Training Center). The instruments used in this study were a physical condition test (sit and reach test, trunk lift test, standing stork test, whole body reaction, hurdle jump test, 12 core stability test, and beep test) for physical fitness and a concentration grid test for measuring concentration ability. The data processing and analysis results found a correlation of (r = 0.50 with a p-value of 0.0410.05) and a coefficient of determination of 25%. It concludes that there is a correlation between physical fitness and the concentration of West Java gymnastic athletes. Physical fitness is a crucial aspect for an athlete to meet the needs of movement and to perform optimal gymnastic movements without feeling excessive tired, so that they can maintain concentration when practicing or competing. Therefore, activities that can improve physical fitness are considered beneficial in increasing concentration abilities.

The effect of Stop-X injury prevention program on landing mechanics and core stability in military cadets

Background. Poor landing mechanics and core stability are risk factors contributing to knee injuries, especially Anterior Cruciate Ligament injury, in military cadets. This study aimed to investigate the effect of the Stop-X injury. Methods. In this quasi-experimental study, 40 cadets were purposefully recruited and randomly assigned either to an intervention (INT, n=20, age=19.05±0.68 years, height=1.75±0.06 m, weight=72.70±4.18 kg, BMI=23.77±1.68 kg/m2) or control group (n=20 participants, age=18.70±0.65 years, height=1.77±0.06 m, weight=74.10±4.90 kg, BMI=23.53±2.24 kg/m2). Landing Error Scoring System and McGill’s stability tests were used to evaluate landing mechanics and core stability at the baseline and the end of the study. Then, the INT group performed the Stop-X program as a warm-up program before each training session for eight weeks, whereas the CON group carried out their routine warm-up program during this time. Mann-Whitney U and ANCOVA tests were used to evaluate the changes. Results. The results obtained in the intervention group in post-test in comparison with the control group showed that there was a significant reduction in Landing Error Scoring System test scores (P=0.001), and there were significant enhancements in core stability tests (P=0.001). Moreover, the results in the intervention group revealed significant reduction in Landing Error Scoring System test scores (P=0.001) and significant enhancements in core stability tests (P=0.001), but there no significant differences were observed in the control group (P&gt;0.05). Conclusion. In sum, the Stop-X injury prevention program may have improved landing mechanics and enhanced core stability in military cadets. Thus, Stop-X program may have reduced the risk factors associated with knee injuries in military cadets. Practical Implications. Our findings suggested that the Stop-X injury prevention program may have been used as a suitable warm-up program in military service instead of traditional warm-up to improve the neuromuscular and biomechanical risk factors.

Effect of 10-Week Progressive Stretching Exercise Programme on Functional Limitations of Musculoskeletal System

Abstract Introduction The aim of the study was to evaluate the effects of a progressive stretching exercise programme on the functional limitations in physically active women. Material and Methods Thirty-six women took part in the study. All of them attended fitness classes (step, fat burning) at least twice a week. The study included women aged 19-26 who were randomly divided into two groups. Group 1 consisted of women who performed a set of progressive stretching exercises twice a week for a period of two months after training sessions. Group 2 (the control group) included women who neither performed any exercises nor received any treatment after training sessions. On the first day of the study, each woman was subjected to the Functional Movement Screen (FMS), the Core Muscle Strength and Stability Test (CMS---amp---ST) and the Sit and Reach test (to the right and left side) before starting their fitness class. Afterwards, group 1 performed progressive stretching exercises as instructed, i.e. twice a week for approximately 20 minutes after classes, for a period of ten weeks. After ten weeks, all women performed FMS, CMS---amp---ST and Sit and Reach tests again. Results The overall FMS test scores of both groups before implementing the exercise programme were not significantly different. After ten weeks, the women from group 1 significantly improved their overall scores in FMS (p ---lt--- 0.001). There were no significant differences in the control group. Significant improvements in the Core Muscle Strength and Stability test scores were observed in both groups. For the Sit and Reach test, there was a significant improvement in performance in group 1 (p ---lt--- 0.001), while a regression was noted in group 2. Conclusions Stretching exercises can have a beneficial effect on minimising the musculoskeletal system’s functional limitations. It is advisable to include post-training complementary exercises to prevent injury.

Is there a relationship between respiratory function and trunk control and functional mobility in patients with relapsing–remitting multiple sclerosis?

ABSTRACT Objective Multiple sclerosis (MS) causes impairment of respiratory function, trunk control, and functional mobility. The purpose of this study was to investigate the relationship between functional mobility and respiratory function and trunk control in MS patients and to compare the findings with those in healthy individuals. Methods Thirty MS patients and 30 healthy subjects were included in this case-control study. All participants were evaluated with a pulmonary function test, maximal inspiratory and expiratory pressure (MIP, MEP), core stability tests, a lumbopelvic stability test (LST), a 2-minute walk test (2MWT), and the Timed Up and Go test (TUG). The disability level of the MS patients was assessed with the Expanded Disability Status Scale (EDSS). Results Respiratory function, respiratory muscle strength, trunk control, and functional mobility were lower in the MS patients than in the controls (p < 0.05). TUG values had a significant negative correlation and the 2MWT values had a significant positive correlation with MEP, core stability tests, and the LST (p < 0.05). Of the variance in the 2MWT distance, 69% was explained by the LST, EDSS, and MEP; of the variance in TUG time, 40% was explained by the EDSS and MEP (p < 0.05). Conclusions To preserve and develop functional mobility in MS patients, approaches to increase respiratory function and trunk control should be included in rehabilitation programs. ClinicalTrials.gov registration number NCT03826095

The Correlation between Unilateral Hip Bridge Endurance and Lumbar Multifidi Sonologic Characteristics in Physically Active Allied Healthcare Professionals at St. Luke's Medical Center - Quezon City: A Cross-sectional Study.

Low back pain is one of the most common work-related musculoskeletal disorders. Healthcare workers are prone to low back pain because of the nature of their profession. Low back pain may be related to lumbar multifidi atrophy or instability and poor core stability. Core stability can be assessed using the unilateral hip bridge endurance test. This cross-sectional study aims to determine the correlation between unilateral hip bridge endurance (UHBE) and sonologic characteristics of the bilateral L4-L5 lumbar multifidus muscles of physically active allied healthcare professionals. Forty (40) physically active healthcare professionals (mean age = 31.3 ± 6.39 years, mean height = 161.17 ± 8.45 cm, mean weight = 61.88 ± 13.58 kg, mean BMI = 23.61 ± 3.68 kg/m2) were recruited via purposive sampling. The participants answered online versions of the Global Physical Activity Questionnaire (GPAQ) and Oswestry Disability Index. They subsequently underwent the UHBE test and ultrasound assessment of the L4-L5 multifidi. Multiplied anteroposterior (AP) and lateral linear (L) measurements were used to estimate L4-L5 multifidi size. The Pearson test was used to test for correlation between the primary outcomes of the study. There was no statistically significant correlation between Lumbar Multifidi CSA and UHBE Scores (r = -0.172, p > 0.05), and between Lumbar Multifidi CSA% Difference and UHBE Scores (r = -0.140, p > 0.05). However, results showed a very weak negative correlation between the Lumbar Multifidi CSA% Difference and UHBE Scores. There is no definite evidence showing a correlation between core stability tests such as the unilateral hip bridge test scores and sonologic characteristics of the lumbar multifidi. However, lumbar multifidi symmetry may have a role with core stability. The correlation between core stability tests and lumbar multifidus morphology should be further investigated.

Procjena stabilnosti trupa i snage za sportsku izvedbu i zdravlje

Given the importance of core stability and strength in athletic performance and in the activities of daily living, its assessment should be considered an integral part of functional diagnostics. This paper presents our approach to assessing the power performance during exercises involving muscles of the core, such as lifting tasks and trunk rotations under a variety of conditions and in various population. Experience showed that core stability and strength tests are able to reveal within and between-group differences in core performance and the effectiveness of training or rehabilitation programs in competitive athletes, as well as in general population of different age and physical fitness.

Core stability status classification based on mediolateral head motion during rhythmic movements and functional movement tests.

Core stability assessment is paramount for the prevention of low back pain, with core stability being considered as the most critical factor in such pain. The objective of this study was to develop a simple model for the automated assessment of core stability status. To assess core stability-defined as the ability to control trunk position relative to the pelvic position - we used an inertial measurement unit sensor embedded within a wireless earbud to estimate the mediolateral head angle during rhythmic movements (RMs) such as cycling, walking, and running. The activities of muscles around the trunk were analyzed by an experienced, highly trained individual. Functional movement tests (FMTs) were performed, including single-leg squat, lunge, and side lunge. Data was collected from 77 participants, who were then classified into good and poor core stability groups based on their Sahrmann core stability test scores. From the head angle data, we extrapolated the symmetry index (SI) and amplitude of mediolateral head motion (Amp). Support vector machine and neural network models were trained and validated using these features. In both models, the accuracy was similar across three feature sets for RMs, FMTs, and full, and support vector machine accuracy (∼87%) is greater than neural network (∼75%). The use of this model, trained with head motion-related features obtained during RMs or FMTs, can help to accurately classify core stability status during activities.

Effects of Core Stability Training on Functional Movement Patterns in Tennis Players.

The aim of this study was to assess the effects of a six-week core stability training program on the fundamental movement pattern assessed using the Functional Movement Screen Test in tennis players. The study group consisted of 160 subjects (74 women, 86 men) with a mean age of 20.26 ± 1.55. The Functional Movement Screen Test (FMS™), as well as the core stability tests including the lateral trunk muscles endurance test (the side bridge test), the abdominal muscles endurance test and the trunk extensors muscle endurance test—were used to evaluate the effects of core stability training. Statistical analysis revealed significant differences in the FMS test scores before and after introducing a core stability exercise program. Initially, the average total score of the FMS test in female tennis players was 14.58 ± 2.91, and after core stability training it was 17.20 ± 1.68 (p < 0.001). In the male group, the total FMS test score was 14.44 ± 2.76 before and 16.91 ± 1.36 after (p < 0.001) in the final assessment. Additionally, statistically significant differences were observed in the core stability test scores before and after introducing a stabilisation training program. The results of the study showed that specific core strengthening exercises could improve the FMS test scores in adult tennis players. This may also have an influence on reducing injury risk in this group, although further studies would be required to test this.

Is lumbopelvic motor control associated with dynamic stability during gait, strength, and endurance of core musculatures?: The STROBE study.

Core stability has been described as the product of motor control and muscular capacity of the lumbopelvic-hip complex. Because of the wide range of functions of the lumbopelvic-hip complex, the gold standard for evaluating core stability remains controversial. The Sahrmann core stability test (SCST), used in conjunction with the stabilizer pressure biofeedback unit (PBU), is widely applied to objectively evaluate core stability as this pertains lumbopelvic motor control. However, the association between such control and other elements of core stability including core strength, endurance, and dynamic stability during gait has not been well-studied. We investigated the relationships among the ability to control the lumbopelvic complex, core strength and endurance, and gait parameters. We compared lateral core endurance, hip strengths, and gait parameters (lateral oscillation of the center of mass (COM), the single support time, and the peak ground reaction force) between good and poor core stability groups, as determined by the SCST. In addition, logistic regression analysis was used to determine whether other core stability measures correlated with the core stability status defined by the SCST. Only lateral oscillation of the COM during walking differed significantly between the good and poor core stability groups and was a significant predictor of SCST core stability status. Lumbopelvic motor control, (as defined by the SCST), affects dynamic stability during gait, but not to the strength or endurance of the core musculatures.

Physical Performance Characteristic of West Sumatera Athletes in Combat and Game Sports

It takes excellent physical preparation for athletes to face the XX National Sports Week event in Papua province for West Sumatra athletes. In the following, the characteristics of the physical condition of the athletes at the Provincial Training Center are presented in the martial arts and games. This study involves 77 selected athletes. The sampling technique used is total sampling, making all the population a sample. There are 10 instruments used to get a picture of the athlete's physical condition (Mackenzie, B), namely: sit ups, push ups, medicine hand ball, bleep test, 20 meter sprint, 400 meter sprint, t-run, core stability, split and jumping hurdle. Data analysis using descriptive techniques is conducted with the help of the SPSS Version 21 application. The research findings show that the athletes' Core Stability test results are in the very good category because only 14% of athletes are below the group average. Furthermore, the test results of sit ups, push ups, medicine hand ball, bleep test, 20 meter sprint, 400 meter sprint, t-run, split and jumping hurdle show that athletes' physical conditions were in the medium category, because 44% to 60% of athletes were below average. It can be concluded, from 10 physical condition test instruments, only core stability athletes are good. The average ability of other physical conditions is still not good and needs to be improved again so that the expected performance can be achieved optimally.

Correlation between Core Stability and Upper-Extremity Performance in Male Collegiate Athletes.

Background: The purpose of this study was to investigate the correlation of core stability, as measured by the McGill and double-leg lowering (DLL) test, with upper-extremity performance, as measured by the upper-quarter Y-balance test (UQYBT), medicine ball throw test (MBTT) and functional throwing performance index (FTPI) test, in collegiate athletes. Materials and Methods: A sample of 61 collegiate athletes from Imam Abdulrahman Bin Faisal University participated in the study. Their core stability was assessed through their McGill and DLL test scores. Their upper-extremity performance was assessed through their UQYBT, MBTT and FTPI test scores. Results: The McGill test score had a significant strong positive correlation with the MBTT score (p = 0.02, r = 0.67) and a significant moderate positive correlation with the UQYBT score (p = 0.01, r = 0.46). There was no significant correlation between the McGill and FTPI test scores (p ≥ 0.05). The DLL test score was positively correlated with the MBTT score (p = 0.02, r = 0.25) but had no significant correlation with the other sports performance variables (p ≥ 0.05). Conclusion: The study results suggest that core stability measures are positively correlated with most of the upper-extremity athletic-performance measures in collegiate athletes. The MBTT score was found to be the most significantly correlated with the scores in both core stability tests among all the upper-extremity athletic-performance tests in this study. However, due to the nature of this study, a cause–effect relationship cannot be established on the basis of the study’s findings, and the study results should be interpreted with caution.