scholarly journals Capacidade cardiopulmonar de jogadores de diferentes posições da Seleção Brasileira Militar de futebol: perfil da equipe no início da temporada

2018 ◽  
Vol 87 (1) ◽  
Author(s):  
André Helou ◽  
Danielli Mello ◽  
José Mauro Malheiros Maia Junior ◽  
Miriam Raquel Meira Mainenti
Keyword(s):  
Anaerobic Threshold ◽  
Initial Period ◽  
Pulmonary Ventilation ◽  
Cardiopulmonary Exercise Testing ◽  
Cross Sectional ◽  
Cardiopulmonary Exercise ◽  
Competitive Season ◽  
De Se ◽  
Soccer Team ◽  
Physical Preparation

Introdução: A contínua evolução do futebol tem exigido uma melhor preparação física dos atletas. Devido a esse fato, fisiologistas têm analisado o consumo máximo de oxigênio (VO2máx) de atletas como uma maneira de se determinar o nível de preparo físico de cada jogador.Objetivo: Avaliar a capacidade cardiopulmonar dos jogadores da Seleção Brasileira Militar de Futebol, comparando os resultados entre as diferentes posições da equipe.Métodos: Pesquisa do tipo observacional seccional. Foram avaliados 28 atletas (cinco zagueiros, cinco laterais, cinco volantes, seis meio-campistas, sete atacantes, idade entre 19 e 40 anos). Os participantes foram submetidos a um teste de esforço cardiopulmonar com um protocolo de rampa (0,4 km/h a cada 30 segundos, iniciando com 8,0 km/h), avaliando VO2, ventilação minuto, velocidade, frequência cardíaca tanto no limiar anaeróbico quanto no esforço máximo. A comparação entre as posições foi feita através da análise de variância (ANOVA) One-way (p < 0,05).Resultados: O VO2máx não apresentou diferença estatisticamente significativa entre as posições (p=0,163): 55,89 ± 7,39 ml/kg/min (zagueiros); 52,55 ± 6,21 ml/kg/min (laterais); 49,65 ± 6,22 ml/kg/min (volantes); 53,81 ± 5,18 ml/kg/min (meio campistas) e 58,35 ± 4,85 ml/kg/min (atacantes). Comportamento similar foi observado para as demais variáveis analisadas, tanto para o momento de limiar anaeróbico, quanto para o esforço máximo.Conclusão: Os atletas não apresentaram diferença tanto em relação à capacidade cardiopulmonar máxima quanto ao limiar anaeróbico, segundo posições dos jogadores o que pode ser explicado pelo período inicial da temporada de treinamento e competição.Cardiopulmonary Capacity of the Brazilian Army Soccer Team in Different Playing Positions: Early Season ProfileIntroduction: The soccer is continually evolving, and it requires better athlete’s physical preparation. Physiologists have analyzed athlete’s maximum oxygen uptake (VO2máx) to determine players physical fitness.Objective: To evaluate the cardiopulmonary capacity of the Brazilian Army Soccer Team, comparing the results among the different playing positions.Methods: Observational cross-sectional research. Twenty-eight athletes (19-40 years old) were evaluated (five defenders, five lateral midfielders, five central defenders, six central midfielders, seven forwards). Participants were submitted to a cardiopulmonary exercise testing with a ramp protocol (increment of 0.4 km/h each 30 seconds, starting at 8.0 km/h), assessing at anaerobic threshold and peak effort the following variables: VO2, pulmonary ventilation, velocity, heart rate. A ANOVA one-way was used to compare positions (p<0.05).Results: VO2máx did not presented statistical difference among positions (p = 0.163): 55.89 ± 7.39 ml/kg/min (defenders); 52.55 ±6.21 ml/kg/min (lateral midfielders); 49.65 ± 6.22 ml/kg/min (central defenders); 53.81 ± 5.18 ml/kg/min (central midfielders) e 58.35 ± 4.85 ml/kg/min (forwards). The same pattern was observed for the other analyzed variables, both for anaerobic threshold and peak effort time points.Conclusion: The athletes did not present difference as much in relation to the maximum cardiopulmonary capacity as to the anaerobic threshold, according to the positions of the players which can be explained by the initial period of the training and competitive season.

scholarly journals Can wearable technology be used to approximate cardiopulmonary exercise testing metrics?

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Laura Jones ◽  
Laura Tan ◽  
Suzanne Carey-Jones ◽  
Nathan Riddell ◽  
Richard Davies ◽  
...  
Keyword(s):  
Physical Activity ◽  
High Risk ◽  
Oxygen Uptake ◽  
Anaerobic Threshold ◽  
Exercise Testing ◽  
Low Cost ◽  
Cardiopulmonary Exercise Testing ◽  
Peak Oxygen Uptake ◽  
Wearable Device ◽  
Cardiopulmonary Exercise

Abstract Background Consumer wrist-worn wearable activity monitors are widely available, low cost and are able to provide a direct measurement of several markers of physical activity. Despite this, there is limited data on their use in perioperative risk prediction. We explored whether these wearables could accurately approximate metrics (anaerobic threshold, peak oxygen uptake and peak work) derived using formalised cardiopulmonary exercise testing (CPET) in patients undergoing high-risk surgery. Methods Patients scheduled for major elective intra-abdominal surgery and undergoing CPET were included. Physical activity levels were estimated through direct measures (step count, floors climbed and total distance travelled) obtained through continuous wear of a wrist worn activity monitor (Garmin Vivosmart HR+) for 7 days prior to surgery and self-report through completion of the short International Physical Activity Questionnaire (IPAQ). Correlations and receiver operating characteristic (ROC) curve analysis explored the relationships between parameters provided by CPET and physical activity. Device selection Our choice of consumer wearable device was made to maximise feasibility outcomes for this study. The Garmin Vivosmart HR+ had the longest battery life and best waterproof characteristics of the available low-cost devices. Results Of 55 patients invited to participate, 49 (mean age 65.3 ± 13.6 years; 32 males) were enrolled; 37 provided complete wearable data for analyses and 36 patients provided full IPAQ data. Floors climbed, total steps and total travelled as measured by the wearable device all showed moderate correlation with CPET parameters of peak oxygen uptake (peak VO2) (R = 0.57 (CI 0.29–0.76), R = 0.59 (CI 0.31–0.77) and R = 0.62 (CI 0.35–0.79) respectively), anaerobic threshold (R = 0.37 (CI 0.01–0.64), R = 0.39 (CI 0.04–0.66) and R = 0.42 (CI 0.07–0.68) respectively) and peak work (R = 0.56 (CI 0.27–0.75), R = 0.48 (CI 0.17–0.70) and R = 0.50 (CI 0.2–0.72) respectively). Receiver operator curve (ROC) analysis for direct and self-reported measures of 7-day physical activity could accurately approximate the ventilatory equivalent for carbon dioxide (VE/VCO2) and the anaerobic threshold. The area under these curves was 0.89 for VE/VCO2 and 0.91 for the anaerobic threshold. For peak VO2 and peak work, models fitted using just the wearable data were 0.93 for peak VO2 and 1.00 for peak work. Conclusions Data recorded by the wearable device was able to consistently approximate CPET results, both with and without the addition of patient reported activity measures via IPAQ scores. This highlights the potential utility of wearable devices in formal assessment of physical functioning and suggests they could play a larger role in pre-operative risk assessment. Ethics This study entitled “uSing wearable TEchnology to Predict perioperative high-riSk patient outcomes (STEPS)” gained favourable ethical opinion on 24 January 2017 from the Welsh Research Ethics Committee 3 reference number 17/WA/0006. It was registered on ClinicalTrials.gov with identifier NCT03328039.

scholarly journals Estimating Equations for Cardiopulmonary Exercise Testing Variables in Fontan Patients: Derivation and Validation Using a Multicenter Cross-Sectional Database

2014 ◽  
Vol 36 (2) ◽  
pp. 393-401 ◽  
Author(s):  
Ryan J. Butts ◽  
Carolyn T. Spencer ◽  
Lanier Jackson ◽  
Martha E. Heal ◽  
Geoffrey Forbus ◽  
...  
Keyword(s):  
Exercise Testing ◽  
Cardiopulmonary Exercise Testing ◽  
Estimating Equations ◽  
Cross Sectional ◽  
Cardiopulmonary Exercise ◽  
Fontan Patients

scholarly journals RELATIONSHIPS BETWEEN AEROBIC AND ANAEROBIC CARDIOPULMONARY INDICES OF YOUNG MALE SOCCER PLAYERS WHEN PERFORMING LABORATORY FUNCTIONAL TESTS

2021 ◽  
Vol 2 (2021) ◽  
pp. 40-50
Author(s):  
Borislava Petrova ◽  
Keyword(s):  
Power Output ◽  
Pulmonary Ventilation ◽  
Cardiopulmonary Exercise Testing ◽  
Average Power ◽  
Young Male ◽  
Energy Systems ◽  
Soccer Players ◽  
Wingate Anaerobic Test ◽  
Cardiopulmonary Exercise ◽  
Aerobic And Anaerobic

Soccer is a high-intensity intermittent team sport where both the aerobic and anaerobic energy systems contribute to the physiological demands of the game. The study aims to search and determine relationships between the values of cardiopulmonary and gas exchange indices during frequently used laboratory tests - the CardioPulmonary Exercise Test (CPET) and the Wingate Anaerobic Test (WAnT), exploring the capacity of the energy systems. Forty-seven soccer players (15.06 ± 0.84 years of age) performed both tests as Oxygen uptake (VO2), Oxygen pulse (O2HR), Pulmonary ventilation (VE), Volume of expired air (VTex), and Breath frequency (BF) were measured online using a breathby-breath cardiopulmonary exercise testing system. Ergometric achievements during WAnT: PP (Peak Power) 662.4 ± 121.2 W; AP (Average Power) 494.67 ± 98.5 W; FI (Fatigue Index) 61.2 ± 28.7%. There was no correlation between WAnT PP and AP and maximum power output in CPET. WAnT VE and VTex correlate significantly with CPET VO2max (r = .676 and r = .772, respectively). The main finding was a presence of approximately identical maximal values of cardiopulmonary parameters achieved in the very different in duration and intensity CPET and WАnT: insignificant differences between CPET versus WAnT: VO2max (55.97 ± 2.02 versus 56.02 ± 17.3 ml.kg.min-1); VEmax (133.96 ± 21.77 versus 126.77 ± 24.77 l.min-1); VTex max (2.19 ± 0.37 l versus 2.06 ± 0.43 l); BFmax (62.20 versus 75.43.min-1). We assume that when conducting WAnT with simultaneous registration of respiration, together with the indices of athletes’ power output, reliable information about the magnitude of VO2max and other cardiopulmonary parameters of players could be obtained. This will greatly facilitate the ongoing control of the exercise conditioning status of athletes.

scholarly journals Skeletal muscle capillary density is related to anaerobic threshold and claudication in peripheral artery disease

2020 ◽  
Vol 25 (5) ◽  
pp. 411-418
Author(s):  
Brian D Duscha ◽  
William E Kraus ◽  
William S Jones ◽  
Jennifer L Robbins ◽  
Lucy W Piner ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Peripheral Artery Disease ◽  
Anaerobic Threshold ◽  
Cardiopulmonary Exercise Testing ◽  
Capillary Density ◽  
Exercise Intolerance ◽  
Peripheral Artery ◽  
Cross Sectional ◽  
Control Subjects ◽  
Artery Disease

Peripheral artery disease (PAD) is characterized by impaired blood flow to the lower extremities, causing claudication and exercise intolerance. Exercise intolerance may result from reduced skeletal muscle capillary density and impaired muscle oxygen delivery. This cross-sectional study tested the hypothesis that capillary density is related to claudication times and anaerobic threshold (AT) in patients with PAD. A total of 37 patients with PAD and 29 control subjects performed cardiopulmonary exercise testing on a treadmill for AT and gastrocnemius muscle biopsies. Skeletal muscle capillary density was measured using immunofluorescence staining. PAD had decreased capillary density (278 ± 87 vs 331 ± 86 endothelial cells/mm2, p = 0.05), peak VO2 (15.7 ± 3.9 vs 24.3 ± 5.2 mL/kg/min, p ⩽ 0.001), and VO2 at AT (11.5 ± 2.6 vs 16.1 ± 2.8 mL/kg/min, p ⩽ 0.001) compared to control subjects. In patients with PAD, but not control subjects, capillary density was related to VO2 at AT ( r = 0.343; p = 0.038), time to AT ( r = 0.381; p = 0.020), and time after AT to test termination ( r = 0.610; p ⩽ 0.001). Capillary density was also related to time to claudication ( r = 0.332; p = 0.038) and time after claudication to test termination ( r = 0.584; p ⩽ 0.001). In conclusion, relationships between capillary density, AT, and claudication symptoms indicate that, in PAD, exercise limitations are likely partially dependent on limited skeletal muscle capillary density and oxidative metabolism.

scholarly journals Near-Infrared Spectroscopic Monitoring During Cardiopulmonary Exercise Testing Detects Anaerobic Threshold

2012 ◽  
Vol 33 (5) ◽  
pp. 791-796 ◽  
Author(s):  
Rohit P. Rao ◽  
Michael J. Danduran ◽  
Rohit S. Loomba ◽  
Jennifer E. Dixon ◽  
George M. Hoffman
Keyword(s):  
Anaerobic Threshold ◽  
Exercise Testing ◽  
Near Infrared ◽  
Cardiopulmonary Exercise Testing ◽  
Cardiopulmonary Exercise ◽  
Spectroscopic Monitoring ◽  
Infrared Spectroscopic

scholarly journals Can wearable technology be used to approximate cardiopulmonary exercise testing metrics?

2020 ◽  
Author(s):  
Matt Morgan ◽  
Laura Jones ◽  
Laura Tan ◽  
Suzanne Carey-Jones ◽  
Nathan Riddell ◽  
...  
Keyword(s):  
Physical Activity ◽  
High Risk ◽  
Oxygen Uptake ◽  
Anaerobic Threshold ◽  
Low Cost ◽  
Cardiopulmonary Exercise Testing ◽  
Peak Oxygen Uptake ◽  
Wearable Device ◽  
Cardiopulmonary Exercise ◽  
Peak Vo2

Abstract Background Consumer wrist-worn wearable activity monitors are widely available, low cost and are able to provide a direct measurement of several markers of physical activity. Despite this, there is limited data on their use in perioperative risk prediction. We explored whether these wearables could accurately approximate metrics (anaerobic threshold, peak oxygen uptake and peak work) derived using formalised cardiopulmonary exercise testing (CPET) in patients undergoing high-risk surgery. Methods Patients scheduled for major elective intra-abdominal surgery and undergoing CPET were included. Physical activity levels were estimated through direct measures (step count, floors climbed and total distance travelled) obtained through continuous wear of a wrist worn activity monitor (Garmin Vivosmart HR+) for 7 days prior to surgery and self-report through completion of the short International Physical Activity Questionnaire (IPAQ). Correlations and receiver operating characteristic (ROC) curve analysis explored the relationships between parameters provided by CPET and physical activity. Device selection Our choice of consumer wearable device was made to maximise feasibility outcomes for this study. The Garmin Vivosmart HR+ had the longest battery life and best waterproof characteristics of the available low-cost devices. Results Of 55 patients invited to participate, 49 (mean age 65.3 ± 13.6 years; 32 male) were enrolled; 37 provided complete wearable data for analyses and 36 patients provided full IPAQ data. Floors climbed, total steps and total travelled as measured by the wearable device all showed moderate correlation with CPET parameters of peak oxygen uptake (peak VO2) (R=0.57 (CI 0.29-0.76), R=0.59 (CI 0.31-0.77) and R=0.62 (CI 0.35-0.79) respectively), anaerobic threshold (R = 0.37 (CI 0.01-0.64), R = 0.39 (CI 0.04-0.66) and R = 0.42 (CI 0.07-0.68) respectively) and peak work (R = 0.56 (CI 0.27-0.75), R = 0.48 (CI 0.17-0.70) and R = 0.50 (CI 0.2-0.72) respectively). Receiver Operator Curve (ROC) analysis for direct and self-reported measures of 7 day physical activity could accurately approximate the ventilatory equivalent for carbon dioxide (VE/VCO2) and the anaerobic threshold. The area under these curves was 0.89 for VE/VCO2 and 0.91 for the anaerobic threshold. For peak VO2 and peak work, models fitted using just the wearable data were 0.93 for peak VO2 and 1.00 for peak work. Conclusions Data recorded by the wearable device was able to consistently approximate CPET results, both with and without the addition of patient reported activity measures via IPAQ scores. This highlights the potential utility of wearable devices in formal assessment of physical functioning and suggests they could play a larger role in pre-operative risk assessment. Ethics This study entitled “uSing wearable TEchnology to Predict perioperative high-riSk patient outcomes (STEPS)” gained favourable ethical opinion on 24/1/2017 from the Welsh Research Ethics Committee 3 reference number 17/WA/0006. It was registered on ClinicalTrials.gov with identifier NCT03328039.

Preoperative cardiopulmonary exercise testing

2021 ◽  
pp. 133-137
Author(s):  
William J.M. Kinnear ◽  
James H. Hull
Keyword(s):  
Oxygen Uptake ◽  
Anaerobic Threshold ◽  
Exercise Testing ◽  
Exercise Test ◽  
Surgical Planning ◽  
Cardiopulmonary Exercise Testing ◽  
Cardiopulmonary Exercise Test ◽  
Cardiopulmonary Exercise ◽  
Good Outcome ◽  
Clinical Problems

This chapter discusses how the results of a cardiopulmonary exercise test (CPET) can be used for preoperative surgical planning. A low preoperative maximum oxygen uptake (VO2max) is associated with a poor outcome. The lower the VO2max, the worse the prognosis. Use of the anaerobic threshold is less reliable. The CPET may identify clinical problems which can be optimized prior to surgery. Pre-habilitation can improve the chances of a good outcome from surgery.

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