scholarly journals Cardiorespiratory, Metabolic and Muscular Responses during a Video-Recorded Aerobic Dance Session on an Air Dissipation Platform

2020 ◽  
Vol 17 (24) ◽  
pp. 9511
Author(s):  
Alessandra Moreira-Reis ◽  
José Luis Maté-Muñoz ◽  
Juan Hernández-Lougedo ◽  
Pablo García-Fernández ◽  
Eulogio Pleguezuelos-Cobo ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Perceived Exertion ◽  
Pulmonary Ventilation ◽  
Muscular Fatigue ◽  
Metabolic Responses ◽  
Hard Surface ◽  
Aerobic Dance ◽  
Jump Test ◽  
Before And After ◽  
Lactate Levels

Background: Aerobic dance (AD) is an appropriate physical activity for improving cardiorespiratory fitness. This study aimed to compare cardiorespiratory and metabolic responses, and muscle fatigue between an air dissipation platform (ADP) and a hard surface during a video-recorded AD session. Methods: 25 healthy young women (23.3 ± 2.5 years) completed three sessions. In session 1, participants performed an incremental test to exhaustion on a treadmill. One week after session 1, participants were randomly assigned in a crossover design to perform video-recorded AD sessions on an ADP and on a hard surface (sessions 2 and 3). Cardiorespiratory and metabolic responses were assessed during AD sessions. Muscular fatigue was measured before and after AD sessions by a countermovement jump test. Results: Significantly higher heart rate, respiratory exchange ratio, pulmonary ventilation, ventilatory oxygen equivalent, and ventilatory carbon dioxide equivalent were observed on an ADP than on a hard surface (p < 0.05). Despite a significant increase in lactate levels on an ADP (p ≤ 0.01), muscular fatigue and perceived exertion rating were similar on both surfaces (p > 0.05). Conclusions: Video-recorded AD on an ADP increased the cardioventilatory and metabolic responses compared to a hard surface, preventing further muscle fatigue.

Perceived Exertion and Metabolic Responses of Women during Aerobic Dance Exercise

1995 ◽  
Vol 81 (2) ◽  
pp. 691-700
Author(s):  
Sarah A. Schaefeer ◽  
Lynn A. Darby ◽  
Kathy D. Browder ◽  
Brenda D. Reeves
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Metabolic Responses ◽  
Maximum Heart Rate ◽  
Ratings Of Perceived Exertion ◽  
Aerobic Dance ◽  
Partial Correlations ◽  
Metabolic Variables ◽  
Instructional Experience ◽  
The Relationship

The relationship between ratings of perceived exertion (RPE) and metabolic responses was examined during aerobic dance exercise with combined arm and leg movements. 16 women with previous aerobic dance instructional experience performed three consecutive trials of 8 min. each of aerobic dance exercise at a cadence of 124 and 138 beats • min.-1 Estimates of RPE reported at the end of each trial were significantly different across the trials while heart rate and % maximum heart rate were significantly different between Trials 1 and 3. Correlations and partial correlations between RPE and all metabolic variables were not significant across trials and with trials combined except for ventilation. Results indicated that RPE should not be used singularly as an indicator of exercise intensity during aerobic dance exercise.

scholarly journals NÍVEIS DE LACTATO EM PRATICANTES E NÃO PRATICANTES DE EXERCÍCIOS FÍSICOS ANTES E APÓS EXERCÍCIOS DE ALTA INTENSIDADE

2019 ◽  
pp. 62-74
Keyword(s):  
Muscle Fatigue ◽  
High Intensity ◽  
Lactate Production ◽  
Physical Activities ◽  
The Body ◽  
Blood Collection ◽  
Research Subjects ◽  
Daily Lives ◽  
Before And After ◽  
Lactate Levels

RODRIGUES, D.T; VANCINI, C; BELIN, P; JARDIM, R; LAVORATTI, A.R; COSTA, F.R; OLIVEIRA, V.A. e POMPEO, K.D. Níveis de lactato em praticantes e não praticantes de exercícios físicos antes e após exercícios de alta intensidade. Revista Científica JOPEF, Vol.28, n.1, pp.62-74, 2019. Lactate is a source of energy produced naturally by the body, when the need for energy is greater than that available, as in long-term exercises, for example. The glucose available in the cells is broken through a process called Glycolysis, which produces pyruvate, which, when it is not exposed to oxygen, becomes lactate. Lactate is often confused as causing muscle fatigue, but its only function is due to the production of energy. The objective of the study was to compare blood lactate levels before and after high intensity physical activities, with as research subjects individuals who practice and do not practice physical activities in their daily lives. For the accomplishment of this study, a bibliographical research was developed in the databases of Google Scholar from the following keywords: Lactate, muscle, muscle fatigue and lactate levels. And the practical research is due to blood collection before and after high-intensity exercises of practitioners and non-practitioners, as well as a questionnaire about diet and daily physical activity practices. It is possible to conclude that lactate production levels differ according to metabolism. However, after physical exercise, what changes is the fact of rapid elimination, since those who have an exercise routine obtained a faster elimination of lactate in the lactate. Blood than those who do not practice activities. Keywords: Lactate; Muscle; Muscular Fatigue

Half Soccer Season Induced Physical Conditioning Adaptations in Elite Youth Players

2019 ◽  
Vol 41 (02) ◽  
pp. 106-112 ◽  
Author(s):  
Markel A. Arregui-Martin ◽  
Ibai Garcia-Tabar ◽  
Esteban M. Gorostiaga
Keyword(s):  
Perceived Exertion ◽  
Production Capacity ◽  
Endurance Performance ◽  
Physical Conditioning ◽  
Endurance Running ◽  
Change Of Direction ◽  
Jump Test ◽  
Lower Limb Strength ◽  
Before And After ◽  
Fitness Programs

AbstractThis study aimed to investigate training-induced fitness changes and their relationship with training-competition load during half a soccer season (18 wks). Training load [heart rate (HR) and ratings of perceived exertion (RPE)] and match time were monitored, including 108 training (3 223 individuals) and 23 match sessions, in 38 youth elite male soccer players. Fitness variables were assessed before and after the study. Yo-Yo intermittent recovery test 1 (Yo-Yo IRT1) improved (P<0.001; 90%CI: 418–632 m; ES: 2.14). Anthropometrical, jump, sprint, and change-of-direction measures remained unchanged. Jump test correlated with sprint (r=0.74; P<0.001; SEE=3.38 m·s−1) and Yo-Yo IRT1 (r=−0.58; P=0.005; SEE=4.11 m) tests. Initial sum of 6 skinfolds was associated with changes in this same measure (r=−0.51; P<0.001; SEE=21%). Initial Yo-Yo IRT1 results were related to changes in Yo-Yo IRT1 (r=−0.84; P<0.001; SEE=10%) and match time played (r=0.44; P=0.033; SEE=445 m). Mean RPE records were related to training spent within 75–90% maximal HR (r=0.54; P<0.001; SEE=4%). The half-season was beneficial for endurance running performance but not for lower-limb strength-velocity production capacity. The more aerobically deconditioned players played fewer minutes of match, although they showed the greatest improvements in endurance performance. Non-soccer-specific, scientifically based, and individualized fitness programs in addition to soccer-specific training are recommended.

PERCEIVED EXERTION AND METABOLIC RESPONSES OF WOMEN DURING AEROBIC DANCE EXERCISE

1995 ◽  
Vol 81 (2) ◽  
pp. 691-700 ◽  
Author(s):  
SARAH A. SCHAEFFER ◽  
LYNN A. DARBY ◽  
KATHY D. BROWDER ◽  
BRENDA D. REEVES
Keyword(s):  
Perceived Exertion ◽  
Metabolic Responses ◽  
Aerobic Dance

scholarly journals Modeling and Validation of Fatigue and Recovery of Muscles for Manual Demolition Tasks

2022 ◽  
Vol 19 (2) ◽  
pp. 930
Author(s):  
Cannan Yi ◽  
Fan Tang ◽  
Kai-Way Li ◽  
Hong Hu ◽  
Huali Zuo ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Fatigue Test ◽  
Perceived Exertion ◽  
Recovery Test ◽  
Work Related ◽  
Before And After ◽  
Recovery Models ◽  
Human Participants ◽  
Forceful Exertion ◽  
Fatigue Recovery

Manual demolition tasks are heavy, physically demanding tasks that could cause muscle fatigue accumulation and lead to work-related musculoskeletal disorders (WMSDs). Fatigue and recovery models of muscles are essential in understanding the accumulation and the reduction in muscle fatigue for forceful exertion tasks. This study aims to explore the onset of muscle fatigue under different work/rest arrangements during manual demolition tasks and the offset of fatigue over time after the tasks were performed. An experiment, including a muscle fatigue test and a muscle fatigue recovery test, was performed. Seventeen male adults without experience in demolition hammer operation were recruited as human participants. Two demolition hammers (large and small) were adopted. The push force was either 20 or 40 N. The posture mimicked that of a demolition task on a wall. In the muscle fatigue test, the muscle strength (MS) before and after the demolition task, maximum endurance time (MET), and the Borg category-ratio-10 (CR-10) ratings of perceived exertion after the demolition task were measured. In the muscle fatigue recovery test, MS and CR-10 at times 1, 2, 3, 4, 5, and 6 min were recorded. Statistical analyses were performed to explore the influence of push force and the weight of the tool on MS, MET, and CR-10. Both muscle fatigue models and muscle fatigue recovery models were established and validated. The results showed that push force affected MET significantly (p < 0.05). The weight of the tool was significant (p < 0.05) only on the CR-10 rating after the first pull. During the muscle fatigue recovery test, the MS increase and the CR-10 decrease were both significant (p < 0.05) after one or more breaks. Models of MET and MS prediction were established to assess muscle fatigue recovery, respectively. The absolute (AD) and relative (RD) deviations of the MET model were 1.83 (±1.94) min and 34.80 (±31.48)%, respectively. The AD and RD of the MS model were 1.39 (±0.81) N and 1.9 (±1.2)%, respectively. These models are capable of predicting the progress and recovery of muscle fatigue, respectively, and may be adopted in work/rest arrangements for novice workers performing demolition tasks.

scholarly journals Effects of a Songahm Taekwondo Tournament on Vertical Jump and Technical-Tactical Performance in Athletes of the Brazilian National Team

2016 ◽  
Vol 17 (3) ◽  
Author(s):  
Daniele Detanico ◽  
Nicole Vitório Librizzi ◽  
Marina Saldanha Da Silva Athayde
Keyword(s):  
Level Set ◽  
Repeated Measures ◽  
Perceived Exertion ◽  
Vertical Jump ◽  
Jump Height ◽  
Significance Level ◽  
National Team ◽  
Jump Test ◽  
Before And After ◽  
Post Hoc

AbstractThe study aimed to verify the effects of a simulated taekwondo tournament on vertical jump as well as technical and tactical performance in athletes of the Brazilian national team.The study involved 10 male Songahm taekwondo athletes. They took part in a simulated tournament in sparring modality, comprising four 2-minute fights with different opponents. Before and after each fight, the athletes performed the Sargent Jump Test and were asked to indicate the rate of the perceived exertion (RPE). In addition, the fights were recorded and some technical and tactical variables were analysed, namely the number of kicks, effectiveness, and technical variety. The analysis of variance for repeated measures with the Bonferroni post hoc test was used, with the significance level set atNo significant differences in the jump height were observed throughout the fights (The simulated taekwondo tournament had no effect on vertical jump or technical and tactical performance throughout the fights. The athletes were able to recover the effort perception before each new fight.

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.

Perceived exertion during muscle fatigue as reflected in movement-related cortical potentials

Neuroreport ◽  
2017 ◽  
Vol 28 (3) ◽  
pp. 115-122 ◽  
Author(s):  
Feng Guo ◽  
Yong-Jun Sun ◽  
Ri-Hui Zhang
Keyword(s):  
Muscle Fatigue ◽  
Perceived Exertion ◽  
Cortical Potentials

Errors in Force Generation and Changes in Controlling Patterns Following Agonist Muscle Fatigue

2009 ◽  
Vol 25 (4) ◽  
pp. 293-303 ◽  
Author(s):  
Yi-Ming Huang ◽  
Ya-Ju Chang ◽  
Miao-Ju Hsu ◽  
Chia-Ling Chen ◽  
Chia-Ying Fang ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Constant Error ◽  
Antagonist Muscle ◽  
Activation Level ◽  
Before And After ◽  
Agonist And Antagonist ◽  
Common Drive ◽  
The Common ◽  
Possible Cause ◽  
Related Increase

The purpose of this study was to evaluate whether agonist muscle fatigue changed the coactivation time and the co-contraction magnitude of the agonist and antagonist muscle, and if the agonist muscle fatigue produced bias (constant error: CE) and inconsistency (variable error: VE) of the force. Subjects are 10 healthy people and one person with impaired proprioception. EMG and force for fast (0.19 ± 0.06 s) and slow (1.20 ± 0.44 s) targeted isometric dorsiflexions were recorded before and after fatigue of the dorsiflexors. The results revealed that the coactivation time increased after fatigue only in the slow contractions but the co-contraction magnitude did not change. The postfatigue increment of the CE was greater in the fast contractions than in the slow ones. We conclude that the postfatigue compensatory strategy can reduce the fatigue-induced bias. The change of muscles activation level after fatigue might be under the influence of the common drive. Impaired proprioception is a possible cause of the fatigue-related increase in bias and inconsistency.

Sign in / Sign up

Export Citation Format

Share Document