College Volleyball Players Research Articles

A multivariate regression analysis of a comprehensive rehabilitation program and performance improvement in young female volleyball players

Purpose: This study aimed to investigate the efficacy of a comprehensive rehabilitation program tailored for college female volleyball players in India, specifically focusing on its impact on vertical jump performance. Material and Methods: Twenty-seven female college volleyball players participated in the study, undergoing a preseason rehabilitation program comprising various exercises targeting strength, power, stability, agility, and flexibility. Pre- and post-rehabilitation assessments were conducted to evaluate changes in vertical jump height using a Vertec vertical jump measuring device. Statistical analysis included multivariate regression analysis and paired t-tests. Results: The multivariate regression analysis revealed significant positive associations between several rehabilitation components, including squats, depth jumps, and plyometric circuits, and improved vertical jump height (p < 0.01). Paired t-test results indicated a significant increase in vertical jump height post-rehabilitation (p < 0.0001), with a mean difference of 4.863 cm. Strong positive correlations were observed between baseline and post-rehabilitation vertical jump measurements (r = 0.9629). Conclusions: The findings demonstrate the effectiveness of the comprehensive rehabilitation program in enhancing vertical jump performance among college female volleyball players in India. By targeting multiple facets of physical fitness and movement quality, the program facilitated significant improvements in explosive lower body strength and power, essential for volleyball performance. These results underscore the importance of tailored rehabilitation interventions in optimizing athlete capabilities and achieving success on the volleyball court.

Coaches Behaviour Towards Motivational Climate and Performance Satisfaction of College Volleyball Players in Guangdong China

Coaches plays a significant role on how an athlete behave, perform and act. Each coach utilizes different method and approach in coaching which describe their coaching behaviour. Coaching behavior represents the personal characteristics and attitudes of the coaches. The impact of coaching behaviour has been an extensive topic of study in sports psychology where continuous arguments on how coaching behaviour affects motivational climate and performance of the athletes. Therefore, the researcher in this study deemed to bridge the knowledge gap through identifying the impact of coaching behaviour, motivational climate and performance satisfaction of the climate and performance satisfaction of college volleyball players in Guangdong, China. In conducting the study, the researcher employed descriptive correlational design. Two hundred collegiate volleyball players in selected universities in Guangdong, Chine were selected through stratified simple random sampling technique as respondents of the study. Validated self-made questionnaire was used as the main instrument of the study in describing coaching behaviour of the team coaches in terms of action, belief and attitude, motivational climate in terms of task/mastery and ego-oriented climate and performance satisfaction in terms of individual, team and coach’s performance. The data was analyzed through the use of Pearson r. The result of the study revealed that there is a significant relationship between the coaching and the motivational climate within the team as perceived by the respondents. Furthermore, coaching behaviour is significantly related to performance satisfaction in terms of individual, team and coach’s performance. Finally, the study formulated a proposed program of action to better enhance the coaching behaviour of the volleyball team coaches.

Mechanical differences between three block jump approaches in NCAA DII college volleyball players

The purpose of the study was to examine the kinematics and kinetics differences between three common block approaches used in volleyball games: (1) shuffle block, (2) chicken wing block, and (3) swing block, from a fixed distance of 1.8 m. Ten female collegiate volleyball players from NCAA DII participated in the study. They performed, in a randomized order, a total of 18 blocks equally distributed among the three block types. Noraxon MyoResearch 3 software was used to analyze the block approaches. The statistical analysis was performed by running a Repeated Measurement ANOVA on Jamovi statistical software 2.3.24. The results showed that there was a significant main effect for time to take off, jump height, max knee flexion angles, peak power, relative peak power, net impulse, reactive strength index, max rate of force development, peak force, and relative peak force between the three types of blocks (p < .05). While max valgus knee angles and max flexion hip angles did not show any effect (p > .5). To cover a distance of 1.8m, it was clear that shuffle block was the weakest option for good block performances, while chicken wing and swing blocks were similar in many aspects. Both chicken wing and swing blocks can be used to elevate the block effectiveness of volleyball players compared to shuffle block.

Effect of kettle bells and battle rope training on grip strength and body composition among university volleyball players

The current research is to examine the possible impacts of High-Intensity Interval Training (HIIT) using battle ropes and kettlebells on body composition and grip strength. The aforementioned workout regimen's influence will be assessed by focusing on these two chosen variables, which are considered essential elements of interest. Existing research suggests that HIIT may have a beneficial effect on both body composition and grip strength, based on current hypotheses. The fundamental concept is that HIIT may induce favorable alterations in body composition, such as increases in lean muscle mass and reductions in body fat. This is due to its structure of brief intervals of very vigorous exercise followed by short periods of rest. HIIT has the ability to improve grip strength, which is an important measure of upper body strength and endurance. The experimental design facilitates the examination of many physical attributes by delivering pre- and post-tests to participants in both groups. The factors under investigation include grip strength (measured using handgrip dynamometers), and body composition (measured using skinfold callipers). The rationale behind our study involves the assessment of triceps strength as well as the strength of the left and right hand grips

Evaluation of Volleyball Players’ Ability to Jump High and Fast: Targeting Female University Volleyball Players

Evaluation of Volleyball Players’ Ability to Jump High and Fast: Targeting Female University Volleyball Players

A Study on the Perception of Korean Volleyball and the Introduction of the Asian Quarter System Among Male University Volleyball Players

A Study on the Perception of Korean Volleyball and the Introduction of the Asian Quarter System Among Male University Volleyball Players

The Effects of Upper Body Plyometric Training on Serving Skill of Female University Volleyball Players

The Effects of Upper Body Plyometric Training on Serving Skill of Female University Volleyball Players

Differences in Service Position Against Service Accuracy in Volleyball

Purpose study. This study aims to find out the difference between serving for volleyball from behind position one, serving from behind position six, and serving from behind position five for UKM Volleyball UNMUS players, also to find out which is more effective between serving from behind position one. serving from behind position six, and serving from position five on top serving ability. Materials and methods. The subjects of this study were 21 UNMUS volleyball players. Data collection uses tests, with instruments in the form of service accuracy tests carried out from the right, left and center positions. The t-value for service accuracy between the right position and the left position is 0.225 and the calculated significant value (Sig) is 0.824. The t value for service accuracy between the right position and the middle position is 0.846 and the calculated significant value (Sig) is 0.407. The t value for service accuracy between the left position and the middle position is 1.091 and the calculated significant value (Sig) is 0.288. The data analysis technique uses ANOVA analysis and t-test through the prerequisite test for normality and homogeneity. Results. The results showed that there was no significant difference in the accuracy of the top serve from different positions, namely from the right, left and center positions. In detail, there is no significant difference in the accuracy of services performed from the right and left positions, the accuracy of services performed from the right and center positions, the accuracy of services performed from the left and center positions. Conclusions. Research results conclude that No There is significant difference accuracy service performed from position left and position in the middle of UKM Musamus Merauke University Volleyball players.

A comparative study of vertical jump parameters in men's college basketball and volleyball players

This study aimed to compare lower limb strength disparities between male college volleyball and basketball players in four distinct vertical jump types. We recruited 100 second-level (above the national standard) male college athletes (50 basketball and 50 volleyball players) from Capital University of Physical Education and Sports who volunteered to participate. We assessed the performance of each athlete with regards to the squat jump (SJ), countermovement jump (CMJ), continuous jump with straight legs (CJs), and continuous jump with bent legs (CJb). Data analysis was performed by independent samples t-tests in SPSS version 25.0. software. In the CMJ test, volleyball players had a significantly higher vertical jump displacement (VJD; p = 0.047, t = −2.018), squat displacement (SD; p = 0.005, t = −2.883), peak force (p = 0.023, t = −1.964), and peak velocity (p = 0.011, t = −1.687) than basketball players. In the SJ test, volleyball players had a significantly higher VJD (p = 0.041, t = −1.21) and SD (p = 0.008, t = −1.46) than basketball players. In the CJs test, volleyball players had a significantly higher average vertical jump displacement (AVJD; p = 0.042, t = −2.067) than basketball players. In the CJb test, volleyball players had a significantly higher AVJD (p = 0.001, t = −3.448), average squat displacement (p = 0.017, t = −2.44), and average contact time (p = 0.045, t = −2.038) than basketball players. The overall vertical jump ability of college volleyball players was better than that of college basketball players. CMJ, SJ, CJs and CJb training should be included in daily training sessions and considered in the selection of basketball and volleyball players. In addition, coaches can use fast twitch Fibers, the effect of pre-stretch and k as the main evaluation indicators to assess daily training progress.

Women's College Volleyball Players Exhibit Asymmetries During Double-Leg Jump Landing Tasks.

Women's volleyball requires frequent and repetitive jumping that when performed with altered biomechanics, including kinematic or kinetic asymmetry, may place the athlete at high risk for injury. This study identified and analyzed lower-extremity biomechanical asymmetries in college women's volleyball players during standard and sport-specific double-leg landing tasks. Cross-sectional laboratory study. Eighteen female college volleyball players were analyzed using standard 3D motion capture techniques during a drop vertical jump and an unanticipated lateral reactive jump task. Repeated-measures multivariate analysis of variance identified asymmetries in kinematic and kinetic variables of each task. Average symmetry indices ranged from 9.3% to 31.3% during the drop vertical jump and 11.9% to 25.6% during the reactive jump task. During the drop vertical jump, the dominant limb exhibited lower knee abduction moments (P = .03), ankle dorsiflexion moments (P = .02), ankle eversion moments (P = .003) and vertical ground reaction forces (P = .03), and greater ankle inversion moments (P = .001). Both kinematic (λ = 0.27, P = .03) and kinetic (λ = 0.12, P = .008) asymmetries were identified during the reactive jump task. The dominant limb exhibited greater peak knee flexion (P = .003) and ankle dorsiflexion (P = .02) angles, and greater ankle dorsiflexion (P = .005) and inversion (P = .03) moments than the nondominant limb. These asymmetries observed during double-leg landing tasks may predispose volleyball athletes to unilaterally higher ground reaction or muscle forces and ultimately a greater risk of injury during landing.

Influence of the sport specific training background on the symmetry of the single legged vertical counter movement jump among female ballet dancers and volleyball players

IntroductionVertical jumps are the key components of performance in the classical ballet and volleyball. Asymmetry of performance between the lower extremities is a potential risk factor for injury. PurposeThe purpose of this study was to analyse the symmetry of the unilateral vertical countermovement jump (CMJ) in a group of female ballet dancers and in a group of female college volleyball players. MethodsWe tested the CMJ with the dominant and nondominant leg and the bilateral CMJ among 15 female ballet dancers and 15 female volleyball players aged 18–24 years. Ground reaction forces were recorded with the force plate and five variables were analysed - jump height, power, energy, and time to flight and time to maximum force during landing. Results2 × 2 repeated measures of ANOVA indicates that type of sport is influencing some of the single leg CMJ variables (energy used and time to maximal force in landing), there was a significant asymmetry between dominant and non-dominant leg in some of the vertical CMJ variables (CMJ height, energy used and the average power was marginally significant). The interaction between the type of sport and leg dominance however was not significant for all of the analysed CMJ variables indicating no difference in asymmetry between the dominant and non-dominant leg in the two investigated sports. The results expressed in the percentage differences between both legs that is widely used in the scientific literature showed that ballet dancers exhibited more symmetrical CMJ height, power, and energy compared to volleyball players. The average percent difference in CMJ height between the dominant and non-dominant leg was 4.26 (10.60) % and 13.36 (14.72) %, respectively. On average, volleyball players jumped slightly higher at the bilateral CMJ (p < 0.001). ConclusionSport-specific training background could explain the observed contralateral deficit differences between two sport groups. The elements of ballet training could be introduced into the volleyball training to overcome observed this contralateral deficit.

Comparing the Aerobic Fitness Capacity of University and Club Levels Male Volleyball Players

The objective of this research was to find the likely importance of variations in aerobic fitness between men volleyball players competing for club and university. The volleyball players must have the capacity to comprehensively display their physical, technical, tactical, and psychological skills. The physical attributes of players have a noticeable impact on both the team's strategy and the players' performance. Players must therefore be physically capable of meeting the demands of the sport. The present study was planned to monitor the cardio-respiratory fitness or aerobic endurance of male volleyball players at the club and university levels and to compare the results. A total number of 60 men volleyball players, aged 19 to 24 years from both clubs and universities participated in this study. To assess each group's level of aerobic fitness, the test that was used is the Harvard step test. Findings demonstrated a difference in club and university players' aerobic fitness of a significant level (p&lt; 0.05). In comparison to club volleyball players, university volleyball players were shown to have superior aerobic fitness.

Role of active joint position sense on the upper extremity functional performance tests in college volleyball players.

BackgroundIt has been well established that proprioception plays a decisive role in shoulder stability and sport performance. Notwithstanding, there is a lack of clear association between active joint position sense (AJPS) and the performance of upper-extremity functional performance tests. The aim of this study was to determine whether the AJPS of the shoulder complex is associated with the performance of college volleyball players with the following functional tests: Y-Balance Test-Upper Quarter (YBT-UQ), Closed Kinetic Chain Upper-Extremity Stability Test (CKCUEST), and Seated Medicine Ball Throw (SMBT). The secondary aim was to investigate whether the magnitude of the proprioception error through the AJPS had the ability to act as a predictor for functional test scores.MethodsCross-sectional study with a convenience sampling. Healthy college volleyball players (≥12 h of training/week), 30 males and 22 females, between 18 and 26 years of age were included. AJPS of the shoulder (90° of flexion (90°Flex), 90° of internal rotation at 90° of abduction (90°IR/ABD), 90° of external rotation at 90° of abduction (90°ER/ABD)) and three upper-extremity functional performance tests (YBT-UQ, CKCUEST and SMBT) were assessed. A Pearson’s test and a stepwise multiple linear regression analysis were used to determine possible associations and relationships between outcome measures, respectively.ResultsThe analysis revealed that AJPS at 90°IR/ABD and 90°ER/ABD were the only proprioceptive variables with an association to the YBT-UQ and SMBT. Despite these relationships, only the AJPS at 90°IR/ABD was associated with the performance of the YBT-UQ in; superolateral direction (β = −0.7; 95% CI [−1.3 to 0.1]; p = 0.025); inferolateral direction (β = −1.5; 95% CI [−2.1 to −0.8]; p = 0.001); and composite score (β = −0.8; 95% CI [−1.3 to −0.3]; p = 0.002). From these, AJPS at 90°IR/ABD mainly explained the variability of YBT-UQ (inferolateral direction) performance (R2 = 0.32; %R2 = 0.32). Our findings allow for a possible expanded role for proprioception as a contributing factor in upper limb motor control during functional movements. Further research is required to explore and distinguish the associations between proprioception, motor control and sport performance involving the upper limbs.

The Relationship between Respiratory Muscle Strength and Physical Performance in College Volleyball Players

Physical performance and respiratory muscle strength are the effective factors that influence sport competence. This study aimed to determine the relationship between respiratory muscle strength and leg strength, power, speed, and agility in college volleyball players. Twenty-eight college volleyball players (age: 20.79±1.71 years; body mass index: 23.22±3.48 kg/m2; sport experience: 4.68±2.21 years; training frequency: 4.43±1.26 days/week) were included into the study. Maximal inspiratory and expiratory pressure (MIP and MEP) tests were performed using a mouth pressure meter for respiratory muscle strength assessment. Leg muscle strength and power were measured using a back and leg dynamometer and a Yardstick device, respectively. The 10-meter sprint test was performed to assess speed performance. Agility was measured by the agility T-test. MIP was positively correlated with leg strength (r=0.406; p=0.032), while it was negatively correlated with speed, and agility (r=-0.416; p=0.028, r=-0.469; p=0.012, respectively). There was no relationship between MIP and power (p=0.197). For MEP, it was negatively correlated with speed (r=-0.392; p=0.039). Other parameters of physical performance were not significantly correlated with MEP (p&gt;0.05). In the light of the results, muscle strength, speed, and agility of college volleyball players develop parallel to respiratory muscle strength, particularly inspiratory muscle. Thus, it is believed that inspiratory muscle training should be added to exercise training programs for enhancing players’ physical performance.

Association Between Lower Trapezius Isometric Strength and Y-Balance Test Upper Quarter Performance in College Volleyball Players.

Knowing the possible association between the isometric strength of the shoulder rotators, scapular muscles, and the Y-balance test upper quarter (YBT-UQ) performance could help identify which indicators of shoulder stability should be considered in this field test. This study aimed to determine whether the isometric strength of the shoulder rotators and scapular muscles is associated with the YBT-UQ performance of the dominant upper limb in amateur volleyball players. Cross-sectional study. A convenience sample of 22 male and 18 female volleyball players (≥12h of training/week) between 18 and 26years of age. The isometric strength of the middle trapezius, lower trapezius, serratus anterior, internal, and external rotator muscles was assessed with a handheld dynamometer. Participants performed the YBT-UQ in the superolateral, medial, and inferolateral directions. The absolute isometric peak force (in Newtons) was normalized to body weight (in Newtons per kilogram) for each muscle test. For each YBT-UQ direction, the distance (in centimeters) was normalized for upper limb length (in percentage). A backward multiple linear regression analysis was used to determine the associations between variables. The analysis revealed that the isometric strength of the lower trapezius (β = 26.82; 95% confidence interval,21.24-32.40) is associated with inferolateral YBT-UQ performance (adjusted R2 = .706; P < .001). This factor explains 70% of the variability of the YBT-UQ in the inferolateral direction. Lower trapezius isometric strength is associated with inferolateral YBT-UQ performance of the dominant upper limb in amateur volleyball players. These findings could help in the development of more specific training programs and rehabilitation goals according to the performance of the athletes in the test.

The Effect of Plyometric Training and Strength Training among Male College Volleyball Players - A Comparative Study

Introduction: The performance of sports persons can be enhanced through scientific inputs from physiotherapists, as demonstrated in this study.Purpose: The aim of this study was to compare the efficacy of plyometric training versus strength training in improving the power, standing broad jump, and vertical jump performance of college-level volleyball players.Methodology: Fifty subjects were randomly assigned to either of one group equally after assessment. Subjects in Group 1 were trained with plyometric training while subjects in Group 2 (n = 25) were trained with strength training. The pre-test and post-test data of standing broad jump, power, vertical jump performance were taken before and after the intervention respectively using standing long jump test, power by Sayer’s formula, and vertical jump test.Results: In Group 1, average power before the intervention was 3409.39 ± 290.19 watts and after the intervention, it was 3912.30 ± 100.00 watts. In Group 2, average power before the intervention was 3318.30 ± 236.17 watts, and after the intervention, it was 3709.2 ± 298.86 watts. Thus, in both the groups, intervention led to a significant improvement in power. In Group 1, average vertical jump height before the intervention was 42.16 ± 4.52 cm and after the intervention, it was 49.68 ± 4.95 cm. In Group 2, average vertical jump height before the intervention was 40.96 ± 3.93 cm and after intervention, it was 47.08 ± 4.76 cm. Conclusion: Both the groups showed improvement after the training, but the group trained with plyometric training showed better results than the strength training group.

The Effect of Rectus Abdominis Fatigue on Lower Limb Jumping Performance and Landing Load for Volleyball Players

The aim of this study was to investigate the effects of rectus abdominis (RA) fatigue on the jumping performance and landing loads of volleyball players during countermovement jumps (CMJs) and spike jumps (SPJs). Twelve healthy university volleyball players were evaluated using a three-dimensional motion analysis system, force plates, and surface electromyography (EMG). The lowest center of mass (Min-CoM), maximum jumping height (Max-JH), angles of joints at take-off and landing, joint moment of the lower limbs, and EMG parameters of the RA, erector spinae, and lower limb muscles, when performing the CMJs and SPJs, were recorded before and after a 10 min RA muscle fatigue intervention. After RA fatigue, the Max-JH was significantly reduced, and the lowest Min-CoM was significantly increased. The take-off angles changed significantly at the ankle (SPJ), knee (CMJ), and hip (SPJ), and the plantar flexion torque changed significantly at the SPJ touchdown. The contribution ratio of the feet during SPJs and CMJs changed after fatigue. Temporary RA fatigue decreases the jump height of athletes and causes a change in the landing strategy.

The Role of Cholinesterases in Post-Exercise HRV Recovery in University Volleyball Players

Some studies show interest in measuring heart rate variability (HRV) during post-exercise recovery. It is known that the parasympathetic system is relevant during this process, where one of the factors of this modulation is the interaction of acetylcholine and cholinesterases (ChE). However, the behavior of ChE and its relationship during recovery is little known; therefore, the objective of this study was to analyze the behavior of ChE and its relationship with recovery evaluated in HRV indicators in volleyball players. An exercise protocol with long-term and intermittent high-intensity phases was applied in nine volleyball players. HRV measurements were made, and blood samples were drawn to evaluate the ChE before exercise and after 24 and 48 h post-exercise. The results show a modification of the variables after exercises with respect to the baseline values (ChE: 1818.4 ± 588.75 to 2218.78 ± 1101.58; RMSSD: 42.64 ± 12.86 to 17.72 ± 12.55 (p &lt; 0.05); SS: 8.76 ± 1.93 to 21.93 ± 10.05 (p &lt; 0.01); S/PS Ratio: 0.32 ± 0.14 to 3.26 ± 3.28 (p &lt; 0.01)), as well as recovery after 24 and 48 h with respect to postexercise (ChE: 1608.81 ± 546.88 (p &lt; 0.05) and 1454.54 ± 580.45 (p &lt; 0.01); RMSSD: 43.83 ± 24.50 and 46.18 ± 33.22 (p &lt; 0.01); SS; 10.93 ± 5.16 and 11.86 ± 4.32 (p &lt; 0.01); S/PS Ratio: 0.46 ± 0.32 and 0.50 ± 0.28 (p &lt; 0.01)). ChE correlations (p &lt; 0.001) were found with moderate (SS: r = 0.465) and large (RMSSD: r = −0.654; S/PS Ratio: r = 0.666) HRV indexes. In conclusion, ChE modifications are related to changes in HRV showing a very similar behavior in the case of the study subjects.

Dynamic Characteristics of Approach Spike Jump Tasks in Male Volleyball Players

The approach running spike-jump (RSJ) is a crucial technique in the sport of volleyball. Two types of RSJs are commonly used for the volleyball spike attack: (1) RSJ with one leg (RSJ-1L) and (2) RSJ with two legs (RSJ-2L). The purposes of the current study were to compare the kinematic and kinetic differences between the RSJ-1L and RSJ-2L. Ten male college volleyball players performed spike jumps by striking a stationary ball at maximal jump height. Data were collected by six infrared Qualisys motion-capture cameras (180 Hz), two AMTI force platforms (1800 Hz), and recorded by Qualisys Track Manager software. The RSJ-1L demonstrated the faster three-step approach running velocity, greater vertical GRF, and ankle, knee, and hip joint moment, but less jump height, shorter last step length and push-off time, smaller knee and hip joint flexion angles at the initial foot-contact, and knee range of motion compared to the RSJ-2L. The current study contributed to the understanding of biomechanical differences of the volleyball spike jumps and can be used to adapt to the volleyball training.

Volleyball Action Extraction and Dynamic Recognition Based on Gait Tactile Sensor

At present, the industry research of volleyball technology is relatively in‐depth, and the analysis of the muscle strength characteristics and coordination of the jumping ball is less, which is not conducive to the control of technical movements. This study used a wireless portable surface EMG tester (16 lines) to analyze the EMG of the main muscle groups in athletes’ volleyball and conducted a video synchronization test method to find the position of the human body. Therefore, a background‐based frame difference method is proposed to detect the position and obtain the precise position of the human body. Experiments show that the background‐based three‐frame difference method effectively eliminates the “hole” effect of the original three‐frame difference method and provides an accurate and complete framework for identifying the human body. Adjust the recognition frame according to the proportion of the human body in the image, and use the predefined parameters of the severe frame to perform forward/volleyball background segmentation. The novelty of this document lies in the completion of the complete human body placement of the above three tasks, precapture/background segmentation, and an improved human body position estimation algorithm to extract the human body pose from the video. First, locate the human body in each frame of the video, and then, perform the process of estimating the position of the graphic model based on the color and texture of the unit. After recognizing the gesture of each image in the video, the recognition result will be displayed. Experiments show that after detecting the position of the human body, the predefined frame setting process of the tomb is carried out in two steps, which improves the automation of the human body image detection algorithm, effectively extracts the human motion video, and increases the motion capture rate by more than 30%, to provide a useful reference for the improvement of college volleyball players’ movement skills and training competitions.