Quantifying External Load and Injury Occurrence in Women's Collegiate Volleyball Players Across a Competitive Season

2022 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Jeffrey B. Taylor ◽  
Haley C. Barnes ◽  
Sara P. Gombatto ◽  
Daniel Greenwood ◽  
Kevin R. Ford
Keyword(s):  
External Load ◽  
Competitive Season ◽  
Injury Occurrence ◽  
Volleyball Players

scholarly journals Variations of Workload Indices Prior to Injuries: A Study in Trail Runners

2020 ◽  
Vol 17 (11) ◽  
pp. 4037 ◽  
Author(s):  
Sérgio Matos ◽  
Filipe Manuel Clemente ◽  
Rui Silva ◽  
José María Cancela Carral
Keyword(s):  
Body Mass ◽  
External Load ◽  
Injury Risk ◽  
Perceived Exertion ◽  
Training Time ◽  
Positioning Systems ◽  
Total Distance ◽  
Injury Occurrence ◽  
Global Positioning ◽  
And Training

The purpose of this study was to compare the variations of weekly workload indices of internal and external load measures across the three weeks prior to injury occurrences in trail runners. Twenty-five trail runners (age: 36.23 ± 8.30 years old; body mass: 67.24 ± 5.97 kg; height: 172.12 ± 5.12 cm) were monitored daily for 52 weeks using global positioning systems (GPSs) to determine the total distance covered. Additionally, a rate of perceived exertion (RPE) scale was applied to determine session-RPE (sRPE: RPE multiplied by training time). The accumulated load (AL), acute: chronic workload ratio (ACWR), training monotony (TM), and training strain (TS) indices were calculated weekly for each runner. During the period of analysis, the injury occurrences were recorded. The differences were observed in AL and ACWR for sRPE and training time were significantly greater during the injury week when compared to the previous weeks. Similar evidence was found in TM and TS indices for sRPE, training time, and total distance. Furthermore, no meaningful differences were observed in AL and ACWR for total distance in the weeks prior to injury occurrence. Nevertheless, significant between-subjects variability was found, and this should be carefully considered. For that reason, an individualized analysis of the workload dynamics is recommended, avoiding greater spikes in load by aiming to keep a progressive increment of load without consequences for injury risk.

scholarly journals MONITORING TRAINING LOAD AND RECOVERY IN VOLLEYBALL PLAYERS DURING A SEASON

2019 ◽  
Vol 25 (3) ◽  
pp. 226-229 ◽  
Author(s):  
Thiago Seixas Duarte ◽  
Danilo Reis Coimbra ◽  
Renato Miranda ◽  
Heglison Custódio Toledo ◽  
Francisco Zacaron Werneck ◽  
...  
Keyword(s):  
Training Load ◽  
Level Of Evidence ◽  
Results Of Treatment ◽  
Competitive Season ◽  
Preparatory Period ◽  
Volleyball Players ◽  
Monitoring Training ◽  
Recovery Status ◽  
Spe Method

ABSTRACT Introduction Monitoring training loads, along with the recovery status, is important for preventing unwanted adaptations. Knowledge of these variables over volleyball seasons is still scarce. Objective To monitor and describe the training load and recovery status of volleyball players over a competitive season. Methods The sample consisted of 14 professional volleyball players. For the entire season, the training load was monitored daily by the SPE method during the session, and the recovery status was monitored by TQR and QBE on the first and last days of training for the week. Results There was a decrease in training load between Preparatory Period I and Competitive Period I (p = 0.03), followed by an increase in Preparatory Period II (p <0.001) and a new decrease in Competitive Periods II (p = 0.01 ) and III (p = 0.003). There was a significant reduction between Pre-TQR and QBE and Post-TQR and QBE in all mesocycles. In the Pre-TQR, there was a reduction between Preparatory Period II and Competitive Period II (p = 0.006), in the Pre-QBE, there was a reduction between Preparatory Period II and Competitive Period III (p = 0.002), and in the Post-TQR, this reduction was observed between Competitive Period I and Preparatory Period II (p = 0.03). In the Post-QBE, there was an increase between Preparatory Period I and Competitive Period I (p = 0.002), followed by a decrease in Preparatory Period II (p = 0.01). Conclusion Loads varied throughout the season, along with recovery, which varied according to the loads and characteristics of each period. Level of evidence I, Therapeutic Studies – Investigating the Results of Treatment.

scholarly journals Biomechanical Assessment of Strength and Jumping Ability in Male Volleyball Players During the Annual Training Macrocycle

2017 ◽  
Vol 24 (4) ◽  
pp. 221-227 ◽  
Author(s):  
Adam Czaplicki ◽  
Marcin Śliwa ◽  
Paulina Szyszka ◽  
Jerzy Sadowski
Keyword(s):  
Upper Limb ◽  
Peak Torque ◽  
Knee Extensors ◽  
Training Methods ◽  
Jump Height ◽  
Multiple Factor Analysis ◽  
Competitive Season ◽  
Volleyball Players ◽  
Preparation Period ◽  
Competition Period

Abstract Introduction. The aim of the study was to determine the changes in the peak torque of the knee extensors and flexors of the dominant lower limb, the shoulder internal and external rotators of the dominant upper limb, and the shoulder extensors and flexors of the dominant upper limb as well as the changes in jump height in volleyball players during the annual training macrocycle. Material and methods. The study involved 13 volleyball players from a Polish second-league team. The measurements were performed five times: before the preparation period (T1), at the beginning of the competitive season (T2), in the middle (T3) and at the end of the first competition period (T4), and after the competitive season (T5). The torque of the knee muscles and shoulder rotators was measured in isokinetic conditions, and the torque of the shoulder extensors and flexors was assessed in isometric conditions. Jumping ability was tested using a piezoelectric platform. Results. We observed statistically significant differences (p < 0.05) in jump height and relative peak torque between the measurements, except for the torque of the shoulder external rotators and flexors. The results of multiple factor analysis based on 5 sets composed of 5 strength variables revealed differences between subjects and measurement sessions. Conclusions. The results obtained indicate that strength and jumping ability should be assessed regularly during the competitive season. The findings of the study suggest that it is necessary to modify the training methods used during the preparation period and individualize the training in the final phase of the competition period.

scholarly journals The Relative Contribution of Cognitive and Physical Components in Volleyball Injuries Prediction

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Parvaneh Hesami ◽  
Ramin Balouchy ◽  
Mohammadreza Ghasemian
Keyword(s):  
Performance Test ◽  
Significant Negative Correlation ◽  
Physical Factor ◽  
Functional Movement Screen ◽  
Functional Movement ◽  
Commission Errors ◽  
Cognitive Components ◽  
Barratt Impulsiveness Scale ◽  
Injury Occurrence ◽  
Volleyball Players

Background: Researchers have always sought to investigate the factors affecting sports injuries in order to identify ways of preventing and controlling such factors. These studies have more emphasis on physical aspects, while the cognitive and psychological components may also be effective. Objectives: The present study was conducted to answer the question whether or not injury can be predicted in volleyball athletes through physical and cognitive components. Methods: For this purpose, 50 volleyball players with the age range of 18 to 25 years old participated in the study. The subjects were evaluated using Barratt impulsiveness scale, Functional movement screen and continuous performance test (for sustained attention). Then, the injuries occurrence were recorded. Furthermore, logistic regression test was run to predict injury in athletes and the bi-serial correlation coefficient was used to investigate the relationship between the factors. Results: The findings showed that there was a significant negative correlation between functional movement screen scores and injuries occurrence. There was also a significant positive correlation between omission and commission errors and injury occurrence, meaning that alongside the increase in the omission and commission errors, the injury occurrence increased; however, there was no significant relationship between the scores of Barratt impulsiveness scale and the injury occurrence. Conclusions: The findings of this study showed that mental and cognitive components, along with the physical factor, play a significant role in injury occurrence in volleyball players, so it is better to consider it in prevention and rehabilitation programs.

scholarly journals Eleven Weeks of Iron Supplementation Does Not Maintain Iron Status for an Entire Competitive Season in Elite Female Volleyball Players: A Follow-Up Study

Nutrients ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1526 ◽  
Author(s):  
Juan Mielgo-Ayuso ◽  
Michael Zourdos ◽  
Julio Calleja-González ◽  
Alfredo Córdova ◽  
Diego Fernandez-Lázaro ◽  
...  
Keyword(s):  
Iron Supplementation ◽  
Iron Status ◽  
Ferrous Sulphate ◽  
Transferrin Saturation ◽  
Previous Trial ◽  
Time Interaction ◽  
Competitive Season ◽  
Volleyball Players ◽  
Power Clean

Background: Even though iron supplementation can be effective, it is necessary to be cautious of toxicity and aim to do no harm, therefore, it is important to examine the length of time the benefits of iron supplementation can be maintained following its cessation. The main purpose of this study was to analyze if iron stores and strength performance were maintained in elite female volleyball players for the final 18 weeks of a competitive season following the cessation of 11 weeks of iron supplementation. Methods: Twenty-two volleyballers (age: 27.0 ± 5.6 years.) were assigned to two groups (iron treatment group-ITG, n = 11 or control gropu-CG, n = 11) at the beginning of a previous trial (T0) and ITG consumed 325mg/d of ferrous sulphate for 11 weeks (T11). Then, in the present study iron status and strength were measured again 10 (T21) and 18 weeks later (T29) after the cessation of supplementation. Results: At the end of the previous trial (T11), ITG maintained iron status as measured by hematological parameters (serum iron-sFE, serum ferritin-FER, transferrin saturation index-TSI, and hemogloblin-Hb), however, CG showed a decrease in these markers at T11. Further, from T0 to T11 ITG experienced greater (p < 0.05) changes in clean and jerk, power clean, and total mean strength (TMS-sum of all strength tests) than CG. In the present, follow-up investigation, there was a group-by-time interaction in favor of CG vs. ITG from T11 to T21 for FER (p = 0.028) and Hb (p = 0.042). Further, there was an increase for CG (p < 0.001) in power clean for CG from T11 (38.4 ± 1.7 kg) to T21 (41.3 ± 1.9 kg) and T29 (41.8 ± 1.7 kg), but no change for power clean in ITG (p > 0.05). A group-by-time interaction from T11 to T29 occurred in favor of CG for half-squat (p = 0.049) and TMS (p = 0.049). Conclusion: Our findings suggest that the benefits of iron supplementation are not sustained in elite female volleyballers if supplementation is ceased for 18 weeks.

scholarly journals Effects of Differential Jump Training on Balance Performance in Female Volleyball Players

2020 ◽  
Vol 10 (17) ◽  
pp. 5921
Author(s):  
Philip X. Fuchs ◽  
Andrea Fusco ◽  
Cristina Cortis ◽  
Herbert Wagner
Keyword(s):  
Postural Control ◽  
Injury Risk ◽  
Force Plate ◽  
Repeated Measurements ◽  
Balance Performance ◽  
Mean Velocity ◽  
Control Phase ◽  
Jump Training ◽  
Competitive Season ◽  
Volleyball Players

The purpose of this study was to determine whether coordinative jump training that induces neuromuscular stimuli can affect balance performance, associated with injury risk, in elite-level female volleyball players. During the competitive season, the balance performance of 12 elite female players (highest Austrian division) was obtained via a wobble board (WB; 200 Hz) placed on an AMTI force plate (1000 Hz). Three identically repeated measurements defined two intervals (control and intervention phases), both comparable in duration and regular training. The intervention included 6 weeks of differential training (8 sessions of 15–20 min) that delivered variations in dynamics around the ankle joints. Multilevel mixed models were used to assess the effect on postural control. WB performance decreased from 27.0 ± 13.2% to 19.6 ± 11.3% during the control phase and increased to 54.5 ± 16.2% during the intervention (β = 49.1 ± 3.5; p < 0.001). Decreased sway area [cm²] (β = −7.5 ± 1.6; p < 0.001), anterior–posterior (β = −4.1 ± 0.4; p < 0.001) and mediolateral sway [mm] (β = −2.7 ± 0.6; p = 0.12), and mean velocity [mm∙s−1] (β = −9.0 ± 3.6; p < 0.05) were observed during the intervention compared with the control phase. Inter-limb asymmetry was reduced (β = −41.8 ± 14.4; p < 0.05). The applied training concept enhanced balance performance and postural control in elite female volleyball players. Due to the low additional physiological loads of the program and increased injury risk during the competitive season, we recommend this intervention for supporting injury prevention during this period.

scholarly journals Strength and vertical jump performance changes in elite male volleyball players during the season (Cambios en el rendimiento en fuerza y salto vertical en jugadores de élite masculinos de voleibol durante la temporada)

Retos ◽  
2018 ◽  
pp. 291-294
Author(s):  
Miguel Sánchez Moreno ◽  
Carlos García Asencio ◽  
Juan José González Badillo ◽  
David Díaz Cueli
Keyword(s):  
Beneficial Effect ◽  
Strength Training ◽  
Physical Performance ◽  
Lower Limb ◽  
Vertical Jump ◽  
Jump Height ◽  
Jump Performance ◽  
Vertical Jump Height ◽  
Competitive Season ◽  
Volleyball Players

Abstract. This study aimed to analyze the effect of strength training on physical performance in elite male volleyball players during the competitive season. Athletes were assessed at the start of season (SS), midpoint of the competitive season (MS), and at the end of the season (ES). Significant increases were observed in vertical jump height (CMJ), jump squat height (JS) and mean propulsive velocity (MPV) from SS to ES (P < 0.05). Likely beneficial increases were observed on CMJ from SS to MS, on JS from SS to MS and from MS to ES. In addition, likely beneficial effect was found on MPV from MS to ES. Over the full season (SS to ES), very likely beneficial effect was observed on CMJ, MPV and JS. In conclusion, increase in strength of lower limb and vertical jump can be achieved in professional volleyball players over a full playing season. Resumen. El objetivo del estudio fue analizar los efectos de un programa de entrenamiento de fuerza sobre el rendimiento en la fuerza del miembro inferior y la capacidad de salto vertical en jugadores de voleibol masculinos durante la temporada de competición. Los atletas fueron evaluados al inicio (SS), a la mitad (MS) y al final de la temporada (ES). Se observaron aumentos significativos en la altura del salto vertical (CMJ), del salto con cargas (JS) y en la velocidad media propulsiva (MPV) alcanzada con las cargas comunes en el ejercicio de sentadillas entre SS y ES (P < 0.05). El análisis basado en la magnitud del cambio reveló un aumento probable en CMJ de SS a MS, y en JS de SS a MS y de MS a ES. Además, un incremento probable se encontró en MPV de MS a ES. Durante la temporada completa (SS a ES), se observó un aumento muy probable en CMJ, en MPV y JS. En conclusión, se puede lograr un aumento en la fuerza de la extremidad inferior y el salto vertical en jugadores profesionales de voleibol durante una temporada de juego completa.

Changes in Muscle Architecture and Explosive Ability in Collegiate Volleyball Players throughout a Competitive Season

2016 ◽  
Vol 48 ◽  
pp. 806
Author(s):  
Caleb D. Bazyler ◽  
Timothy J. Suchomel ◽  
Christopher J. Sole ◽  
Satoshi Mizuguchi ◽  
Michael H. Stone
Keyword(s):  
Muscle Architecture ◽  
Competitive Season ◽  
Volleyball Players
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