scholarly journals Effects of Endurance Training Intensity on Pulmonary Diffusing Capacity at Rest and after Maximal Aerobic Exercise in Young Athletes

2021 ◽  
Vol 18 (23) ◽  
pp. 12359
Author(s):  
Rim Dridi ◽  
Nadia Dridi ◽  
Karuppasamy Govindasamy ◽  
Nabil Gmada ◽  
Ridha Aouadi ◽  
...  
Keyword(s):  
Training Program ◽  
Endurance Training ◽  
Maximal Exercise ◽  
Training Programs ◽  
Diffusing Capacity ◽  
Young Athletes ◽  
Alveolar Volume ◽  
Significant Group ◽  
Pulmonary Diffusing Capacity ◽  
Post Hoc

This study compared the effects of varying aerobic training programs on pulmonary diffusing capacity (TLCO), pulmonary diffusing capacity for nitric oxide (TLNO), lung capillary blood volume (Vc) and alveolar–capillary membrane diffusing capacity (DM) of gases at rest and just after maximal exercise in young athletes. Sixteen healthy young runners (16–18 years) were randomly assigned to an intense endurance training program (IET, n = 8) or to a moderate endurance training program (MET, n = 8). The training volume was similar in IET and MET but with different work intensities, and each lasted for 8 weeks. Participants performed a maximal graded cycle bicycle ergometer test to measure maximal oxygen consumption (VO2max) and maximal aerobic power (MAP) before and after the training programs. Moreover, TLCO, TLNO and Vc were measured during a single breath maneuver. After eight weeks of training, all pulmonary parameters with the exception of alveolar volume (VA) and inspiratory volume (VI) (0.104 < p < 0889; 0.001 < ES < 0.091), measured at rest and at the end of maximal exercise, showed significant group × time interactions (p < 0.05, 0.2 < ES < 4.0). Post hoc analyses revealed significant pre-to-post decreases for maximal heart rates (p < 0.0001, ES = 3.1) and improvements for VO2max (p = 0.006, ES = 2.22) in the IET group. Moreover, post hoc analyses revealed significant pre-to-post improvements in the IET for DM, TLNO, TLCO and Vc (0.001 < p < 0.0022; 2.68 < ES < 6.45). In addition, there were increases in Vc at rest, VO2max, TLNO and DM in the IET but not in the MET participants after eight weeks of training with varying exercise intensities. Our findings suggest that the intensity of training may represent the most important factor in increasing pulmonary vascular function in young athletes.

Influence of pressure suit inflation on pulmonary diffusing capacity in man

1962 ◽  
Vol 17 (2) ◽  
pp. 259-262 ◽  
Author(s):  
Joseph C. Ross ◽  
Glen D. Ley ◽  
Ronald F. Coburn ◽  
J. L. Eller ◽  
Robert E. Forster
Keyword(s):  
Valsalva Maneuver ◽  
Breath Holding ◽  
Entire Body ◽  
Costal Margin ◽  
Pulmonary Congestion ◽  
Diffusing Capacity ◽  
Thoracic Cage ◽  
Alveolar Volume ◽  
Air Trapping ◽  
Pulmonary Diffusing Capacity

Previous investigations of the effect of inflation of a pressure suit on pulmonary diffusing capacity (DL) have been reported from our two laboratories, one (Indianapolis) finding an increase and the other (Philadelphia) finding no change. The present investigation was carried out in Philadelphia, using some of the same subjects and pressure suits in order to reconcile the contradictory results. The earlier contradictory results were confirmed. The pressure suit used in the investigations at Philadelphia ( suit P)covered the entire body below the nipples, whereas the suit used in the investigations at Indianapolis( suit I) extended cephalad only as far as the costal margin. When suit P was inflated in the present study, DL again did not increase significantly in two subjects. However, when the upper part of the suit was folded down so that the thoracic cage was not covered, inflation of the suit did produce a significant increase in DL. Inflation of suit P when it covered the chest made it difficult for a subject not to perform a Valsalva maneuver during breath holding and caused more decrease in alveolar volume (Va) than when it was inflated in the folded-down position. In two subjects studied, we found no difference in air trapping with inflation of suit P in the two positions. The discrepancy between the results of the two earlier studies appears to have resulted from the different construction of the two pressure suits used. We conclude that pressure suit inflation in man will produce an increase in DL, presumably by means of pulmonary congestion. Submitted on September 22, 1961

Computerized tomography and pulmonary diffusing capacity in highly trained athletes after performing a triathlon

1995 ◽  
Vol 79 (4) ◽  
pp. 1226-1232 ◽  
Author(s):  
C. Caillaud ◽  
O. Serre-Cousine ◽  
F. Anselme ◽  
X. Capdevilla ◽  
C. Prefaut
Keyword(s):  
Ct Scanning ◽  
Breath Holding ◽  
Diffusing Capacity ◽  
Long Distance ◽  
Alveolar Volume ◽  
Lung Density ◽  
Male Athletes ◽  
Pulmonary Diffusing Capacity ◽  
Before And After ◽  
Long Distance Race

We investigated the computerized tomographies (CTs) of the thorax and the pulmonary diffusing capacity for CO (DLCO) in eight male athletes before and after a triathlon. DLCO and alveolar volume (VA) were simultaneously measured during 9 s of breath holding. The transfer coefficient (KCO = DLCO/VA) was then calculated. CT scanning was performed during breath holding with the subjects in the supine position. Scanner analysis was done by 1) counting the linear and polygonal opacities (index of interstitial fluid accumulation) and 2) calculating the physical mean lung density and the mean slice mass. Results showed a significant reduction in DLCO (44.9 +/- 2.3 vs. 42.9 +/- 1.7 ml.min-1.mmHg-1; P < 0.05) and KCO (6.0 +/- 0.3 vs. 5.6 +/- 0.3 ml.min-1.mmHg-1.l of VA-1; P < 0.05) after the triathlon and an increase in mean lung density (0.21 +/- 0.009 vs. 0.25 +/- 0.01 g/cm3; P < 0.0001). The number of polygonal and linear opacities increased after the race (P < 0.001). This study confirmed that DLCO and KCO decrease in elite athletes after a long-distance race and showed a concomitant increase in CT lung density and in the number of opacities.

PL-005 Effects of Strength-endurance training on muscle damage after tennis competition

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Mehmet Serif Okmen ◽  
Metin Polat
Keyword(s):  
Training Program ◽  
Endurance Training ◽  
Muscle Damage ◽  
Training Programs ◽  
Control Group ◽  
Blood Levels ◽  
Control Groups ◽  
And Control ◽  
Experimental Group ◽  
Tennis Match

Objective The present study aimed to identify the level of muscle damage that develops after a tennis match, and to investigate the potential effects of eight weeks of strength-endurance training on the level of this muscle damage. Methods The study included 30 male tennis players aged 18 years and above who had been actively playing tennis matches at least for five years, and who voluntarily agreed to take part in the study. The participants were classified into two groups, consisting of 15 experimental subjects and 15 controls. To begin with, all of the participants played tennis matches for three hours according to the international rules of the game, and partners were changed every one hour. In order to determine the level of muscle damage after the tennis match, the blood levels of Creatinine Kinase (CK), Lactate Dehydrogenase (LDH), Aminotransferase (ALT) and Myoglobin were measured prior to the matches, and immediately, 24 hours, and 48 hours after the completion of the match. Afterwards, the participants in both groups engaged in eight weeks of tennis training three days a week for 90 minutes per day. The participants in the experimental group additionally carried out eight weeks of strength-endurance training three days a week for 90 minutes per day. The abovementioned measurements were repeated in both groups at the end of the eighth week. Results The CK values of the experimental and control groups, which were measured simultaneously before the training programs, were not significantly different, while after the eight-week training program, the CK values measured immediately after the match (<0.001) and 48 hours (p<0.05) after the match were significantly lower in the experimental group when compared to the control group. LDH values, which were simultaneously measured prior to the training programs, were also not significantly different between the experimental and control groups, while those measured immediately after the match (p<0.05) and 24 hours (p<0.05) after the match were significantly lower in the experimental group when compared to the control group after the training program. The ALT and myoglobin levels, which were measured simultaneously in both groups after the training program also slightly decreased, but the difference between two groups was not statistically significant. Conclusions The results of the present study demonstrate that strength-endurance training, carried out in addition to an eight-week regular tennis training program, resulted in a significant decrease in markers of muscle damage after a tennis match played for the same duration at the same intensity.

Effect of pressure-suit inflation on pulmonary-diffusing capacity

1960 ◽  
Vol 15 (5) ◽  
pp. 843-848 ◽  
Author(s):  
Joseph C. Ross ◽  
Thomas H. Lord ◽  
Glen D. Ley
Keyword(s):  
Valsalva Maneuver ◽  
Venous Pressure ◽  
Diffusing Capacity ◽  
Alveolar Volume ◽  
Pulmonary Diffusing Capacity ◽  
Pulmonary Capillary ◽  
Capillary Blood Volume ◽  
Pulmonary Capillary Blood ◽  
Capillary Bed ◽  
Pulmonary Capillary Blood Volume

Pressure-suit inflation over the lower body produces acute pulmonary hypertension. An increase in pulmonary capillary blood volume, Vc, with this procedure should theoretically increase pulmonary-diffusing capacity, Dl. Lewis and co-workers ( J. Appl. Physiol. 12:57, 1958) found no increase in Dl with suit inflation. The subject was reinvestigated with measurement of the increase in central venous pressure, CVP, produced and with a study of effect of alveolar volume, Va, and the Valsalva maneuver on the results. Dl was determined in five seated and seven supine subjects at small and large Va, both before and during suit inflation and also with a Valsalva under each condition. Suit inflation significantly increased Dl (13%) with an increase in 21 of the 22 comparisons. Mean Dl was 16% lower when Va was decreased 34%. The Valsalva maneuver significantly decreased both control and suit inflation Dl. Results show that with controlled Va and no Valsalva and when CVP was definitely increased by the procedure, Dl significantly increased with suit inflation, probably indicating that the pulmonary capillary bed was passively dilated. Submitted on March 11, 1960

Recovery of pulmonary diffusing capacity after maximal exercise

1992 ◽  
Vol 10 (6) ◽  
pp. 525-531 ◽  
Author(s):  
Jess Rasmussen ◽  
Birgitte Hanel ◽  
Kari Saunamaki ◽  
Niels H. Secher
Keyword(s):  
Maximal Exercise ◽  
Diffusing Capacity ◽  
Pulmonary Diffusing Capacity

Impaired lung function in children and adolescents with Fontan circulation may improve after endurance training

2018 ◽  
Vol 28 (9) ◽  
pp. 1115-1122 ◽  
Author(s):  
Eva R. Hedlund ◽  
Henrik Ljungberg ◽  
Liselott Söderström ◽  
Bo Lundell ◽  
Gunnar Sjöberg
Keyword(s):  
Lung Function ◽  
Oxygen Uptake ◽  
Children And Adolescents ◽  
Endurance Training ◽  
Maximal Oxygen Uptake ◽  
Vital Capacity ◽  
Age And Growth ◽  
Diffusing Capacity ◽  
Pulmonary Diffusing Capacity ◽  
Fontan Patients

AbstractObjectivesThe objective of this research was to study lung function, physical capacity, and effect of endurance training in children and adolescents after Fontan palliation compared with healthy matched controls.MethodsFontan patients (n=30) and healthy matched control patients (n=25) performed dynamic and static spirometry, and pulmonary diffusing capacity and maximal oxygen uptake tests, before and after a 12-week endurance training programme and at follow-up after 1 year.ResultsFontan patients had a restrictive lung pattern, reduced pulmonary diffusing capacity (4.27±1.16 versus 6.61±1.88 mmol/kPa/minute, p<0.001), and a reduced maximal oxygen uptake (35.0±5.1 versus 43.7±8.4 ml/minute/kg, p<0.001) compared with controls. Patients had air trapping with a higher portion of residual volume of total lung capacity compared with controls (26±6 versus 22±5%, p<0.05). Vital capacity increased for patients, from 2.80±0.97 to 2.91±0.95 L, p<0.05, but not for controls after endurance training. The difference in diffusing capacity between patients and controls appeared to be greater with increasing age.ConclusionsFontan patients have a restrictive lung pattern, reduced pulmonary diffusing capacity, and reduced maximal oxygen uptake compared with healthy controls. Endurance training may improve vital capacity in Fontan patients. The normal increase in pulmonary diffusing capacity with age and growth was reduced in Fontan patients, which is concerning. Apart from general health effects, exercise may improve lung function in young Fontan patients and should be encouraged.

scholarly journals 218 PULMONARY DIFFUSING CAPACITY AT REDUCED ALVEOLAR VOLUME WITHIN THE PAEDIATRIC AGE RANGE

1994 ◽  
Vol 36 (1) ◽  
pp. 39A-39A
Author(s):  
H Stam ◽  
A V D Beek ◽  
K Grünberg ◽  
H A W M Tiddens ◽  
A Versprille
Keyword(s):  
Diffusing Capacity ◽  
Alveolar Volume ◽  
Pulmonary Diffusing Capacity ◽  
Paediatric Age ◽  
Age Range

scholarly journals The need for race-specific reference equations for pulmonary diffusing capacity for nitric oxide

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Gerald Stanley Zavorsky ◽  
Ahmad Saleh Almamary ◽  
Mobarak Khalid Alqahtani ◽  
Shi Huh Samuel Shan ◽  
Douglas Shawn Gardenhire
Keyword(s):  
Nitric Oxide ◽  
Racial Differences ◽  
Breath Hold ◽  
Specific Reference ◽  
Regression Equations ◽  
Diffusing Capacity ◽  
Alveolar Volume ◽  
Pulmonary Diffusing Capacity ◽  
Pilot Data ◽  
Reference Equations

Abstract Background Few reference equations exist for healthy adults of various races for pulmonary diffusing capacity for nitric oxide (DLNO). The purpose of this study was to collect pilot data to demonstrate that race-specific reference equations are needed for DLNO. Methods African Americans (blacks) were chosen as the comparative racial group. In 2016, a total of 59 healthy black subjects (27 males and 32 females) were recruited to perform a full battery of pulmonary function tests. In the development of DLNO reference equations, a white reference sample (randomly drawn from a population) matched to the black sample for sex, age, and height was used. Multiple linear regression equations for DLNO, alveolar volume (VA), and pulmonary diffusing capacity for carbon monoxide (DLCO) using a 5–6 s breath-hold were developed. Results Our models demonstrated that sex, age2, race, and height explained 71% of the variance in DLNO and DLCO, with race accounting for approximately 5–10% of the total variance. After normalizing for sex, age2, and height, blacks had a 12.4 and 3.9 mL/min/mmHg lower DLNO and DLCO, respectively, compared to whites. The lower diffusing capacity values in blacks are due, in part, to their 0.6 L lower VA (controlling for sex and height). Conclusion The results of this pilot data reveal small but important and statistically significant racial differences in DLNO and DLCO in adults. Future reference equations should account for racial differences. If these differences are not accounted for, then the risk of falsely diagnosing lung disease increase in blacks when using reference equations for whites.

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