Stroke volume response to progressive exercise in athletes engaged in different types of training

Concu, Alberto; Marcello, C.

doi:10.1007/bf00863393

Cited by 32 publications

(26 citation statements)

References 36 publications

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“…The magnitude to which these changes in EDV and ESV can take place depends on total blood volume, heart size and muscle mass, contractility and neuroendocrine function [27]. These factors can all be influenced by deconditioning and training [28,29], ageing processes [30] and cardiovascular disease. In the COPD patients in this study, left ventricular filling probably did not become critical towards the end of exercise, simply because the test was terminated by dyspnoea, in advance of significant demands on haemodynamic function.…”

Section: Discussionmentioning

confidence: 99%

The haemodynamic response to exercise in chronic obstructive pulmonary disease: assessment by impedance cardiography

Bogaard¹,

Dekker²,

Arntzen³

et al. 1998

Eur Respir J

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This study aimed to determine the differences in haemodynamic responses to a standard incremental exercise test between outpatients with chronic obstructive pulmonary disease (COPD) and age-matched controls and to discover the relationship between severity of airflow obstruction and exercise haemodynamics in COPD. Twenty-two male patients with COPD (forced expiratory volume in one second (FEV1)/vital capacity (VC))<80% predicted) and 20 age-matched male controls performed an incremental exercise test (10 W x min(-1)) with ventilatory function and changes in stroke volume (deltaSV) and cardiac output (deltaCO) measured by means of electrical impedance cardiography (EIC). Submaximal deltaSV and deltaCO were lower in COPD patients. Peak exercise deltaSV were equal in patients and controls (128+/-33 versus 129+/-29%, p=0.98), whereas peak deltaCO was lower in patients (COPD versus controls: 232+/-71 versus 289+/-54%, p<0.005). In COPD patients, FEV1 (% pred) was significantly correlated to deltaSV at all submaximal exercise intensities, to peak exercise deltaSV and to peak exercise deltaCO. FEV1/VC (% pred) was significantly correlated to deltaSV at 30 and 60 W. In conclusion, in chronic obstructive pulmonary disease an aberrant haemodynamic response to exercise was found, especially in patients with severe airflow obstruction. This aberrant response is related to the degree of airflow obstruction and may limit exercise performance in patients with severe chronic obstructive pulmonary disease.

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Section: Discussionmentioning

confidence: 99%

The haemodynamic response to exercise in chronic obstructive pulmonary disease: assessment by impedance cardiography

Bogaard¹,

Dekker²,

Arntzen³

et al. 1998

Eur Respir J

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“…However, most of this research has used conditioning programs that include both sprint and aerobic endurance training, to improve speed and aerobic fitness of volleyball players [8,19,27,39]. In modern volleyball, the high frequency of matches during the competitive season limits the number of training sessions devoted to physical fitness development [21,29].…”

Section: Discussionmentioning

confidence: 99%

The effects of 20-m repeated sprint training on aerobic capacity in college volleyball players

Kaynak

Eryılmaz

Aydoğan

et al. 2017

Biomedical Human Kinetics

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SummaryStudy aim: The purpose of this study was to examine the effects of a repeated sprint training program in addition to volleyball training on the aerobic capacity of college volleyball players. Materials and methods: Eighteen male volleyball players were randomly assigned to either an experimental group (n = 9, age: 21.2 ± 1.3 years) or a control (n = 9, age: 21.2 ± 1.6 years) group. Both groups followed a traditional volleyball training program three times per week for 6 weeks. The experimental group additionally performed a repeated sprint training protocol immediately before each volleyball training session. The repeated sprint training consisted of 1-3 sets of 5 × 20 m maximal sprints with 20 seconds of active recovery between sprints and 4 min of passive recovery between sets. Before and after the 6-week training period, all participants performed an incremental treadmill test to determine maximal oxygen uptake (VO 2max ) and time to exhaustion, and the repeated sprint test (10 × 20 m with a 20-second recovery between each sprint). Results: The experimental group showed significant improvements in VO 2max (+7.1 ± 4.8%; p = 0.001) and running time to exhaustion (+15.8 ± 6.8%; p = 0.004) after training. The best 20-m sprint time (−2.3 ± 2.5%; p = 0.029), mean sprint time (−5.3 ± 3.1%; p = 0.001) and fatigue index (−34.1 ± 28.2%; p = 0.012) also improved significantly in the experimental group. None of these variables changed significantly in the control group (p > 0.05). Conclusions:The current findings indicate that the addition of a repeated sprint training program can improve both the aerobic capacity and anaerobic performance of college volleyball players.

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“…Cardiodynamic variables throughout tests were measured by means of impedance cardiography (NCCOM 3, BoMed Inc., Irvine CA), a method commonly utilised to assess hemodynamics in resting and exercising subjects (Concu and Marcello 1993;Crisafulli et al 2003a). The impedance method provides non-invasive reliable data of trans-thoracic Xuid index (TFI), left ventricular ejection time (VET), stroke volume (SV), HR and CO. Further details of the impedance cardiography method can be found elsewhere (Crisafulli et al 2003a).…”

Section: Hemodynamic Measurementsmentioning

confidence: 99%

Cardiovascular adjustments in breath-hold diving: comparison between divers and non-divers in simulated dynamic apnoea

Tocco¹,

Crisafulli²,

Melis³

et al. 2011

Eur J Appl Physiol

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The diving response is the sequence of cardiovascular, respiratory and metabolic adjustments produced by apnoea and further strengthened by cooling of the facial area and/or hypoxia. This study aimed at comparing the cardiovascular response to diving of trained divers with that of a control group. In this order, 14 trained divers were compared with 14 non-divers. By means of impedance cardiography and continuous monitoring of arterial pressure, hemodynamic data were collected during three different experimental sessions. Each session included a cycle-ergometer exercise against a workload of 0.5 W kg(-1) of body mass, pedalling in a steady-state condition. During exercise, each subject randomly accomplished 40 s of breath-hold exercise with face immersion (test A) or in air (test B). A control exercise test with normal breathing (test C) was also performed. Divers showed a faster onset of bradycardic response (ANOVA, P < 0.01) and a faster adjustment in systemic vascular resistance (P < 0.001 for divers vs. controls) than did non-divers. Moreover, cardiac output decreased only in divers during the first phase of test A (P < 0.01 for divers vs. controls). The most striking findings were that divers showed a more rapid cardiovascular adjustment with respect to controls, in particular in heart rate and systemic vascular resistance; moreover, with continued apnoea, a delayed increase in myocardial performance and stroke volume occurred and obscured the cardiovascular effects of the diving response.

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Stroke volume response to progressive exercise in athletes engaged in different types of training

Cited by 32 publications

References 36 publications

The haemodynamic response to exercise in chronic obstructive pulmonary disease: assessment by impedance cardiography

The haemodynamic response to exercise in chronic obstructive pulmonary disease: assessment by impedance cardiography

The effects of 20-m repeated sprint training on aerobic capacity in college volleyball players

Cardiovascular adjustments in breath-hold diving: comparison between divers and non-divers in simulated dynamic apnoea

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