scholarly journals The effect of fatigue on jump height and the risk of knee injury after a volleyball training game: A pilot study

2021 ◽  
Vol 13 (1) ◽  
pp. 197-204
Author(s):  
Charis Tsarbou ◽  
Nikolaos I. Liveris ◽  
Panagiotis D. Tsimeas ◽  
George Papageorgiou ◽  
Sofia A. Xergia ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Cruciate Ligament ◽  
Vertical Jump ◽  
Rating Of Perceived Exertion ◽  
P Value ◽  
Clinical Tool ◽  
Jump Test ◽  
Scale Scores ◽  
The Difference ◽  
Dependent Samples

Abstract Study aim: To investigate the effect of fatigue, induced by a volleyball training game on the risk of Anterior Cruciate Ligament (ACL) injury. Material and methods: Thirteen female volleyball college athletes, ages 18 to 21 years old, completed jump landings from a box 30 cm height, prior and post a 60-minute volleyball training game. The clinical tool Landing Error Scoring System (LESS) was employed in order to evaluate the technique of landing prior and post the game. The level of fatigue induced by the volleyball game was assessed by vertical jump test and Borg Rating of Perceived Exertion (RPE) Scale pre and post-game. In order to compare measurements pre and post-game t-tests for dependent samples were used. Results: Participants performed lower vertical jumps post-game with a Confidence Interval of 26.2 ± 2.3 cm (pre-game) and 24.9 ± 2.2 cm (post game). The difference between pre and post-game was found to be statistically significant with a t12 = 2.55 and a p-value of 0.026. In the case of assessing fatigue, the Borg RPE scale scores were found to be statistically significant (t12 = 14.05, p < 0.001) higher post-game (10.2 ± 0.6), as compared to pre-game (6.5 ± 0.4). Similarly, LESS scores increased significantly (t12 = 2.21, p = 0.047), post-game (6.3 ± 1.1) compared to pre-game (5.8 ± 1.0) that prove poorer landing ability. Conclusion: It seems that a short duration volleyball training game induces fatigue and negatively affects the jumping and landing ability.

scholarly journals Correlação entre percepção subjetiva do esforço e fadiga neuromuscular dos membros inferiores em atletas de futebol

2020 ◽  
Vol 18 (3) ◽  
pp. 37-41
Author(s):  
Caique Lopes Müeller ◽  
Pedro Sotero da Cunha Neto ◽  
Eloir Junior da Silva Dos Santos ◽  
Alexandre Oliveira ◽  
Rosimeide Francisco dos Santos Legnani ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Vertical Jump ◽  
Training Session ◽  
Rating Of Perceived Exertion ◽  
Lower Limbs ◽  
Fat Percentage ◽  
Jump Test ◽  
Before And After ◽  
Statistical Program ◽  
The Difference

OBJETIVO: Determinar a correlação entre a percepção subjetiva do esforço (PSE) e a fadiga neuromuscular dos membros inferiores por meio de saltos mensurados no pré e pós treino em atletas de futebol.MÉTODOS: Quatorze atletas de futebol (sub 17) foram monitorados ao longo de quatro sessões de treinamento. Com as seguintes características: estatura (173±6,81cm), peso (64,43±5,80kg) e percentual de gordura (14,74±3,11). A PSE foi monitorada por meio do aplicativo e-trimp, 15 minutos após o final de cada sessão de treinamento. Os saltos foram avaliados por meio da plataforma de salto Jump System Pro, 10 minutos, antes e depois das sessões de treinamento. Os dados foram analisados no programa estatístico SPSS por meio da estatística descritiva e correlação de Spearman.RESULTADOS: A correlação entre a PSE e a diferença da potência relativa do salto vertical (pré/pós treino) foi fraca para todas as sessões. As sessões 1 e 4 apresentaram correlação negativa (r=-0,184, p=0,530; r=-0,159, p=0,587). As sessões 2 e 3 apresentaram correlação positiva (r=0,010, p=0,973; r=0,373, p=0,188), respectivamente.CONCLUSÃO: Não foram observadas correlações estatisticamente significativas entre a PSE e a potência relativa de salto nos atletas avaliados.ABSTRACT. The correlation between the rating of perceived exertion and neuromuscular fatigue on the lower body in soccer athletes.OBJECTIVE: Define the correlation between the rating of perceived exertion (RPE) and the power of the lower limbs before and after training in soccer athletes.METHODS: Were monitored 14 soccer athletes (under 17 years old) over four training sessions. With the following characteristics: height (173±6.81cm), weight (64.43±5.80kg) and fat percentage (14.74±3.11). RPE was monitored through the e-trimp app, 15 minutes after the end of each training session. Jumps were evaluated through the Jump System Pro jumping platform, 10 minutes before and after the training sessions. Data was analyzed in the SPSS statistical program using descriptive statistics and Spearman correlation.RESULTS: The correlation between the RPE and the difference of the relative power of the vertical jump test (pre/post training) was weak for all the sessions. Sessions 1 and 4 presented a negative correlation (r=-0.184, p=0.530; r=-0.159, p=0.587). Sessions 2 and 3 showed a positive correlation (r=0.010, p=0.973; r=0.373, p=0.188), respectively.CONCLUSION: There were no statistically significant correlations between the RPE and the relative jumping power in the evaluated athletes.

scholarly journals The effects of neuromuscular performance and perceptual parameters in futsal athletes playing consecutive games

2020 ◽  
Vol 19 (4) ◽  
pp. 292
Author(s):  
Cristiane Blausius Salvi Hübner ◽  
Cristiano André Hübner ◽  
Martim Gomes Weber ◽  
Fernando De Souza Campos ◽  
Renan Felipe Hartmann Nunes ◽  
...  
Keyword(s):  
Outcomes Research ◽  
Perceived Exertion ◽  
Vertical Jump ◽  
Team Sports ◽  
Rating Of Perceived Exertion ◽  
Test Results ◽  
Countermovement Jump ◽  
Squat Jump ◽  
Neuromuscular Performance ◽  
Jump Test

The present study aims to analyze the effects of consecutive futsal games on neuromuscular performance and rating of perceived exertion in athletes. Fourteen male futsal players (16.5 ± 0.51 years, 67.5 ± 11.1 kg; 1.73 ± 0.08 cm; 22.5 ± 2.3kg/m²) from a youth futsal team took part at the study. Our research monitored the team throughout the 4-day qualifying phase of the Campeonato Paranaense de Futsal (the Youth Futsal Championship of the State of Paraná, Brazil). The athletes underwent the following tests immediately after each futsal match: vertical jump test (Squat Jump (SJ)), Countermovement Jump test (CMJ), and a rating of perceived exertion (s-RPE) session. Magnitude based inference analysis reported CMJ values likely lower after the 2nd match when compared with the results obtained after the 1st and 4th matches: (ES= -0.46 low) and (ES= -0.53 moderate), respectively. Furthermore, SJ values reported after the 2nd match are likely lower if compared with the outcomes obtained after the 1st match (ES= -0.56 moderate) and possibly lower when compared with the 3rd matches (ES= -0.45 low). PSE results were significantly different comparing the 1st and 2nd matches (p=0.04); the 1st and 3rd matches (p=0.01); and the 3rd and 4th matches (p=0.01). Moreover, the outcomes research obtained after the 1st match are very likely to be lower when compared with the results from the 2nd (ES= -0.97 high) and 3rd matches (ES= high); and almost certain lower when compared with the 2nd and 3rd matches (ES= -0.45 low). Test results research obtained after the 4th match are very likely to be lower than the ones from the 2nd (EF=-0.83 high) and 3rd matches (ES= 1.01 high). Thus, by investigating the youth futsal tournament, the study could observe under-17 athletes delivered a decreased performance in vertical jump tests throughout the 4-consecutive-day championship, which can be associated with an increased rating of perceived exertion.Keywords: team sports, physical performance, fatigue, muscle damage.

scholarly journals Development of an Upwind Sailing Ergometer

2013 ◽  
Vol 8 (6) ◽  
pp. 663-670 ◽  
Author(s):  
Margot Callewaert ◽  
Stefan Geerts ◽  
Evert Lataire ◽  
Jan Boone ◽  
Marc Vantorre ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Respiratory Exchange Ratio ◽  
Rating Of Perceived Exertion ◽  
Level Laser ◽  
Biofeedback System ◽  
The Difference ◽  
High Level ◽  
And Training ◽  
Performance Diagnostics

Purpose:To develop a sailing ergometer that accurately simulates upwind sailing exercise.Methods:A sailing ergometer that measures roll moment accompanied by a biofeedback system that allows imposing a certain quasi-isometric upwind sailing protocol (ie, 18 bouts of 90-s hiking at constantly varying hiking intensity interspersed with 10 s to tack) was developed. Ten male high-level Laser sailors performed an incremental cycling test (ICT; ie, step protocol at 80 W + 40 W/3 min) and an upwind sailing test (UST). During both, heart rate (HR), oxygen uptake (VO2), ventilation (VE), respiratory-exchange ratio, and rating of perceived exertion were measured. During UST, also the difference between the required and produced hiking moment (HM) was calculated as error score (ES). HR, VO2, and VE were calculated relative to their peak values determined during ICT. After UST, the subjects were questioned about their opinion on the resemblance between this UST and real-time upwind sailing.Results:An average HM of 89.0% ± 2.2% HMmax and an average ES of 4.1% ± 1.8% HMmax were found. Mean HR, VO2, and VE were, respectively, 80% ± 4% HRpeak, 39.5% ± 4.5% VO2peak, and 30.3% ± 3.7% VEpeak. Both HM and cardiorespiratory values appear to be largely comparable to literature reports during on-water upwind sailing. Moreover, the subjects gave the upwind sailing ergometer a positive resemblance score.Conclusions:Results suggest that this ergometer accurately simulates on-water upwind sailing exercise. As such, this ergometer could be a great help in performance diagnostics and training follow-up.

Various Workload Models and the Preseason Are Associated With Injuries in Professional Female Cyclists

2021 ◽  
pp. 1-6
Author(s):  
Teun van Erp ◽  
Taco van der Hoorn ◽  
Marco J.M. Hoozemans ◽  
Carl Foster ◽  
Jos J. de Koning
Keyword(s):  
Generalized Estimating Equations ◽  
Perceived Exertion ◽  
Estimating Equations ◽  
Rating Of Perceived Exertion ◽  
Moving Averages ◽  
The Third ◽  
Increased Risk ◽  
The Difference ◽  
Workload Models ◽  
Exponentially Weighted

Purpose: To determine if workload and seasonal periods (preseason vs in season) are associated with the incidence of injuries and illnesses in female professional cyclists. Methods: Session rating of perceived exertion was used to quantify internal workload and was collected from 15 professional female cyclists, from 33 athlete seasons. One week (acute) workload, 4 weeks (chronic) workload, and 3 acute:chronic workload models were analyzed. Two workload models are based on moving averages of the ratios, the acute:chronic workload ratio (ACWR), and the ACWR uncoupled (ACWRuncoup). The difference between both is the chronic load; in ACWR, the acute load is part of the chronic load, and in ACWRuncoup, the acute and chronic load are uncoupled. The third workload model is based on exponentially weighted moving averages of the ratios. In addition, the athlete season is divided into the preseason and in season. Results: Generalized estimating equations analysis was used to assess the associations between the workload ratios and the occurrence of injuries and illnesses. High values of acute workload (P = .048), ACWR (P = .02), ACWRuncoup (P = .02), exponentially weighted moving averages of the ratios (P = .01), and the in season (P = .0001) are significantly associated with the occurrence of injury. No significant associations were found between the workload models, the seasonal periods, and the occurrence of illnesses. Conclusions: These findings suggest the importance of monitoring workload and workload ratios in female professional cyclists to lower the risk of injuries and therefore improve their performances. Furthermore, these results indicate that, in the preseason, additional stressors occur, which could lead to an increased risk of injuries.

scholarly journals Determination of ventilatory threshold based on rating of perceived exertion scale

2004 ◽  
Vol 132 (11-12) ◽  
pp. 409-413 ◽  
Author(s):  
Stanimir Stojiljkovic ◽  
Dejan Nesic ◽  
Sanja Mazic ◽  
Dejana Popovic ◽  
Dusan Mitrovic ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Ventilatory Threshold ◽  
Rating Of Perceived Exertion ◽  
Physically Active ◽  
Mean Values ◽  
Significant Difference ◽  
Continuous Test ◽  
Dependent Samples ◽  
Increasing Load

The objective of the study was to test the possibility of using the fixed value (12-13) of the Rating of Perceived scale (RPE scale), as a valid method for determination of ventilatory threshold (VT). The sample of the subjects included 32 physically active males (age: 22.3; TV: 180.5; TM: 75.5 kg; V02max: 57.1 mL/kg/min). During the continuous test of progressively increasing load on a treadmill, cardiorespiratory and other parameters were monitored using ECG and gas analyzer. Following the test, VT and V02max were determined. During the test, at each level, at the scale from 6 to 20, the subjects pointed the number that suited best their currently feeling of strain. The RPE threshold was defined as constant value of 12-13. Average values of ventilatory and RPE threshold were expressed by parameters that were monitored and then compared by using t-test for dependent samples. No significant difference was found between mean values of VT and RPE threshold, when they were expressed by relevant parameters: speed, load, heart rate, absolute and relative oxygen consumption. Fixed value (12-13) of RPE scale may be used to detect the exercise intensity that corresponds to ventilatory threshold.

scholarly journals Associations between Physical Status and Training Load in Women Soccer Players

2021 ◽  
Vol 18 (19) ◽  
pp. 10015
Author(s):  
Lillian Gonçalves ◽  
Filipe Manuel Clemente ◽  
Joel Ignacio Barrera ◽  
Hugo Sarmento ◽  
Gibson Moreira Praça ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Vertical Jump ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Soccer Players ◽  
Load Range ◽  
Change Of Direction ◽  
Fitness Assessment ◽  
Cohort Design ◽  
And Training

This study aimed to analyze the variations of fitness status, as well as test the relationships between accumulated training load and fitness changes in women soccer players. This study followed an observational analytic cohort design. Observations were conducted over 23 consecutive weeks (from the preseason to the midseason). Twenty-two women soccer players from the same first Portuguese league team (22.7 ± 5.21 years old) took part in the study. The fitness assessment included anthropometry, hip adductor and abductor strength, vertical jump, change of direction, linear speed, repeated sprint ability, and the Yo-Yo intermittent recovery test. The training load was monitored daily using session rating of perceived exertion (s-RPE). A one-way repeated ANOVA revealed no significant differences for any of the variables analyzed across the three moments of fitness assessments (p > 0.05). The t-test also revealed no differences in the training load across the moments of the season (t = 1.216; p = 0.235). No significant correlations were found between fitness levels and accumulated training load (range: r = 0.023 to −0.447; p > 0.05). This study revealed no differences in the fitness status during the analyzed season, and the fitness status had no significant relationship with accumulated training load.

scholarly journals The Rating of Perceived Exertion Predicts Performance Loss and Physiological Demand in Vertical Jump Session Until Voluntary Failure

GYMNASIUM ◽  
2020 ◽  
Vol XXI (2 (Supplement)) ◽  
pp. 73
Author(s):  
Radenko Arsenijevic ◽  
Igor Ilic ◽  
Veroljub Stankovic
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Vertical Jump ◽  
Rating Of Perceived Exertion ◽  
Performance Loss ◽  
Physiological Demand ◽  
Counter Movement Jump ◽  
Maximal Height ◽  
And Performance ◽  
Heart Rate Variance

The aims of this study were (a) to assess the ability of the rating of perceived exertion (RPE) to predict performance loss (i.e. percent of drop in height relative to maximal height) of vertical jump session until voluntary failure, and (b) to determine the ability of RPE to describe the physiological demand of this session via heart rate monitor. Ten healthy men performed vertical jumps (counter-movement jump) until voluntary failure. Before session start maximal jump height for every subject was determined. Heart rate and RPE, separately for legs (RPE legs) and for breath (RPE breath), were recorded every ten jumps throughout the sessions. Results have shoved that RPE legs and performance loss have about 99% of same variance ( =0,9899; p<0,000), and RPE breath explains about 98% heart rate variance ( =0,9789; p<0,000) in vertical jump session until voluntary failure.

scholarly journals Investigation of Olfactory Function Following Septorhinoplasty in Iranian Population by Rapid Smell Test (RST)

2020 ◽  
pp. 1-6
Author(s):  
Amir Yarahmadi ◽  
Kamran Kamrava ◽  
Ali Shafee ◽  
Maryam Milanifard ◽  
Mohammad Aghajanpour ◽  
...  
Keyword(s):  
Social Sciences ◽  
Olfactory Function ◽  
P Value ◽  
Clinical Tool ◽  
Smell Test ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Smell Identification

Introduction: All surgical procedures on nose affect the olfactory function to some extent. There are different viewpoints about olfactory function after septorhinoplasty. We aim to investigate smell perception changes in patients following septorhinoplasty. In this study the use of Rapid Smell Test (RST) as a fast and reliable clinical tool was investigated. Methods: A prospective cohort study was done in Rasool Akram teaching hospital in 2018 and 2019. Group of 74 septorhinoplasty candidates aged over 18 was selected by convenience. Persian Smell Identification Test (PSIT) and rapid smell test (RST) was obtained from patients before surgery and one month after, if needed three months after and six months after. In addition for patients with dysfunction in any of follow up periods (one month, 3 months and 6 months after surgery) smell magnitude test (SMT) was used. All data were analyzed using Statistical Package for Social Sciences, version 24.0 (IBM SPSS Statistics Inc., Chicago, IL, USA). Results: Out of 74 patients participating in this study 67 were female. Mean age of 25.68±5.18 years was recorded for participants. All patients before surgery had PSIT score more than 19 and the mean PSIT score before operation was 22.63±1.39. Also all patients scored 5 out of 5 in RST before surgery. Mean PSIT score one month after surgery decreased to 22.21±2.20 but still 93 percent (69 patients) of participants were in range for normal olfactory function. We recorded this to be significant (p value = 0.044). RST after one month showed the same results. The difference between RST before and after surgery was also significant (p value = 0.024). For those 5 patients with abnormal olfactory function PSIT and RST were done 3 months after operation which determines normal olfactory function for all of them. As well as PSIT, RST also shows the same results and five participants recorded 5 out of 5 three months after surgery. Conclusion: This study showed changes in olfactory function after septorhinoplasty will resolve at most 3 months after surgery and it is safe to say there is no effect on olfactory function three months after operation. Also we demonstrated that RST can be a fast and reliable tool for assessing patients’ olfactory function in clinical setting.

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