Myocardial performance during progressive exercise in athletic adolescent males

Thomas W. Rowland, Max Garrard, Simon Marwood, Miriam E. Guerra, Denise Roche, Viswanath B. Unnithan

Research output: Contribution to journalArticle

Abstract

PURPOSE: The extent that enhanced ventricular function contributes to superior aerobic fitness of trained athletes is unclear. This study compared cardiovascular responses to progressive cycle exercise in 12 adolescent soccer players and 10 untrained boys with assessment of ventricular inotropic and relaxation properties by Doppler ultrasound techniques.

METHODS: Resting cardiac dimensions were measured by M-mode echocardiography. Stroke volume was estimated by the Doppler technique, and systolic function by peak aortic flow velocity and ejection flow rate. Diastolic transmitral pressure gradient was assessed by pulse wave peak E-wave velocity, ventricular relaxation properties by tissue Doppler imaging (E' velocity, adjusted for ventricular size), and ventricular filling pressure by E/E' ratio.

RESULTS: Size-adjusted cardiac dimensions were significantly greater in the athletes. Peak V O2 values for the athletes and nonathletes were 57.4 +/- 4.8 and 44.4 +/- 6.6 mL.kg.min, respectively. Maximal cardiac index and stroke index were greater in the athletes (11.10+/- 1.52 vs 9.02 +/- 2.05 L.min.m; 59 +/- 8 vs 46 +/- 10 mL.m). Athletes and nonathletes demonstrated similar maximal peak aortic velocity (231 +/- 20 and 208 +/- 45 cm.s, respectively) and ejection rate (13.3 +/- 1.0 and 12.5 +/- 2.8 mL.s.cm x 10, respectively). No significant group differences were observed in Emax (155 +/- 17 and 149 +/- 23 cm.s for athletes and nonathletes, respectively), adjusted E'max (5.9 +/- 1.2 and 5.8 +/- 1.2 cm.s.mm for athletes and nonathletes, respectively), and E/E'max (265 +/- 40 and 262 +/- 56 for athletes and nonathletes, respectively).

CONCLUSIONS: This study revealed no differences between young trained athletes and nonathletes in myocardial functional responses to progressive exercise, implying that greater aerobic fitness in these athletes reflected volume expansion of the cardiovascular system without contribution of enhanced systolic or diastolic ventricular function. Such findings should be considered limited to the context of young athletes with limited duration of athletic training.
Original languageEnglish
Pages (from-to)1721-1728
Number of pages8
JournalMedicine & Science in Sports & Exercise
Volume41
Issue number9
DOIs
Publication statusPublished - 1 Sep 2009
Externally publishedYes

Fingerprint

Athletes
Sports
Exercise
Ventricular Function
Doppler Ultrasonography
Soccer
Ventricular Pressure
Cardiovascular System
Stroke Volume
Echocardiography
Pulse
Stroke
Blood Pressure

Keywords

  • aerobic fitness
  • heart function
  • fitness testing
  • ultrasound

Cite this

Rowland, Thomas W. ; Garrard, Max ; Marwood, Simon ; Guerra, Miriam E. ; Roche, Denise ; Unnithan, Viswanath B. / Myocardial performance during progressive exercise in athletic adolescent males. In: Medicine & Science in Sports & Exercise. 2009 ; Vol. 41, No. 9. pp. 1721-1728.
@article{07138536fde64d51bc7009a780b9caff,
title = "Myocardial performance during progressive exercise in athletic adolescent males",
abstract = "PURPOSE: The extent that enhanced ventricular function contributes to superior aerobic fitness of trained athletes is unclear. This study compared cardiovascular responses to progressive cycle exercise in 12 adolescent soccer players and 10 untrained boys with assessment of ventricular inotropic and relaxation properties by Doppler ultrasound techniques.METHODS: Resting cardiac dimensions were measured by M-mode echocardiography. Stroke volume was estimated by the Doppler technique, and systolic function by peak aortic flow velocity and ejection flow rate. Diastolic transmitral pressure gradient was assessed by pulse wave peak E-wave velocity, ventricular relaxation properties by tissue Doppler imaging (E' velocity, adjusted for ventricular size), and ventricular filling pressure by E/E' ratio.RESULTS: Size-adjusted cardiac dimensions were significantly greater in the athletes. Peak V O2 values for the athletes and nonathletes were 57.4 +/- 4.8 and 44.4 +/- 6.6 mL.kg.min, respectively. Maximal cardiac index and stroke index were greater in the athletes (11.10+/- 1.52 vs 9.02 +/- 2.05 L.min.m; 59 +/- 8 vs 46 +/- 10 mL.m). Athletes and nonathletes demonstrated similar maximal peak aortic velocity (231 +/- 20 and 208 +/- 45 cm.s, respectively) and ejection rate (13.3 +/- 1.0 and 12.5 +/- 2.8 mL.s.cm x 10, respectively). No significant group differences were observed in Emax (155 +/- 17 and 149 +/- 23 cm.s for athletes and nonathletes, respectively), adjusted E'max (5.9 +/- 1.2 and 5.8 +/- 1.2 cm.s.mm for athletes and nonathletes, respectively), and E/E'max (265 +/- 40 and 262 +/- 56 for athletes and nonathletes, respectively).CONCLUSIONS: This study revealed no differences between young trained athletes and nonathletes in myocardial functional responses to progressive exercise, implying that greater aerobic fitness in these athletes reflected volume expansion of the cardiovascular system without contribution of enhanced systolic or diastolic ventricular function. Such findings should be considered limited to the context of young athletes with limited duration of athletic training.",
keywords = "aerobic fitness, heart function, fitness testing, ultrasound",
author = "Rowland, {Thomas W.} and Max Garrard and Simon Marwood and Guerra, {Miriam E.} and Denise Roche and Unnithan, {Viswanath B.}",
year = "2009",
month = "9",
day = "1",
doi = "10.1249/MSS.0b013e3181a06cb5",
language = "English",
volume = "41",
pages = "1721--1728",
journal = "Medicine & Science in Sports & Exercise",
issn = "0195-9131",
publisher = "American College of Sports Medicine",
number = "9",

}

Myocardial performance during progressive exercise in athletic adolescent males. / Rowland, Thomas W.; Garrard, Max; Marwood, Simon; Guerra, Miriam E.; Roche, Denise; Unnithan, Viswanath B.

In: Medicine & Science in Sports & Exercise, Vol. 41, No. 9, 01.09.2009, p. 1721-1728.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Myocardial performance during progressive exercise in athletic adolescent males

AU - Rowland, Thomas W.

AU - Garrard, Max

AU - Marwood, Simon

AU - Guerra, Miriam E.

AU - Roche, Denise

AU - Unnithan, Viswanath B.

PY - 2009/9/1

Y1 - 2009/9/1

N2 - PURPOSE: The extent that enhanced ventricular function contributes to superior aerobic fitness of trained athletes is unclear. This study compared cardiovascular responses to progressive cycle exercise in 12 adolescent soccer players and 10 untrained boys with assessment of ventricular inotropic and relaxation properties by Doppler ultrasound techniques.METHODS: Resting cardiac dimensions were measured by M-mode echocardiography. Stroke volume was estimated by the Doppler technique, and systolic function by peak aortic flow velocity and ejection flow rate. Diastolic transmitral pressure gradient was assessed by pulse wave peak E-wave velocity, ventricular relaxation properties by tissue Doppler imaging (E' velocity, adjusted for ventricular size), and ventricular filling pressure by E/E' ratio.RESULTS: Size-adjusted cardiac dimensions were significantly greater in the athletes. Peak V O2 values for the athletes and nonathletes were 57.4 +/- 4.8 and 44.4 +/- 6.6 mL.kg.min, respectively. Maximal cardiac index and stroke index were greater in the athletes (11.10+/- 1.52 vs 9.02 +/- 2.05 L.min.m; 59 +/- 8 vs 46 +/- 10 mL.m). Athletes and nonathletes demonstrated similar maximal peak aortic velocity (231 +/- 20 and 208 +/- 45 cm.s, respectively) and ejection rate (13.3 +/- 1.0 and 12.5 +/- 2.8 mL.s.cm x 10, respectively). No significant group differences were observed in Emax (155 +/- 17 and 149 +/- 23 cm.s for athletes and nonathletes, respectively), adjusted E'max (5.9 +/- 1.2 and 5.8 +/- 1.2 cm.s.mm for athletes and nonathletes, respectively), and E/E'max (265 +/- 40 and 262 +/- 56 for athletes and nonathletes, respectively).CONCLUSIONS: This study revealed no differences between young trained athletes and nonathletes in myocardial functional responses to progressive exercise, implying that greater aerobic fitness in these athletes reflected volume expansion of the cardiovascular system without contribution of enhanced systolic or diastolic ventricular function. Such findings should be considered limited to the context of young athletes with limited duration of athletic training.

AB - PURPOSE: The extent that enhanced ventricular function contributes to superior aerobic fitness of trained athletes is unclear. This study compared cardiovascular responses to progressive cycle exercise in 12 adolescent soccer players and 10 untrained boys with assessment of ventricular inotropic and relaxation properties by Doppler ultrasound techniques.METHODS: Resting cardiac dimensions were measured by M-mode echocardiography. Stroke volume was estimated by the Doppler technique, and systolic function by peak aortic flow velocity and ejection flow rate. Diastolic transmitral pressure gradient was assessed by pulse wave peak E-wave velocity, ventricular relaxation properties by tissue Doppler imaging (E' velocity, adjusted for ventricular size), and ventricular filling pressure by E/E' ratio.RESULTS: Size-adjusted cardiac dimensions were significantly greater in the athletes. Peak V O2 values for the athletes and nonathletes were 57.4 +/- 4.8 and 44.4 +/- 6.6 mL.kg.min, respectively. Maximal cardiac index and stroke index were greater in the athletes (11.10+/- 1.52 vs 9.02 +/- 2.05 L.min.m; 59 +/- 8 vs 46 +/- 10 mL.m). Athletes and nonathletes demonstrated similar maximal peak aortic velocity (231 +/- 20 and 208 +/- 45 cm.s, respectively) and ejection rate (13.3 +/- 1.0 and 12.5 +/- 2.8 mL.s.cm x 10, respectively). No significant group differences were observed in Emax (155 +/- 17 and 149 +/- 23 cm.s for athletes and nonathletes, respectively), adjusted E'max (5.9 +/- 1.2 and 5.8 +/- 1.2 cm.s.mm for athletes and nonathletes, respectively), and E/E'max (265 +/- 40 and 262 +/- 56 for athletes and nonathletes, respectively).CONCLUSIONS: This study revealed no differences between young trained athletes and nonathletes in myocardial functional responses to progressive exercise, implying that greater aerobic fitness in these athletes reflected volume expansion of the cardiovascular system without contribution of enhanced systolic or diastolic ventricular function. Such findings should be considered limited to the context of young athletes with limited duration of athletic training.

KW - aerobic fitness

KW - heart function

KW - fitness testing

KW - ultrasound

U2 - 10.1249/MSS.0b013e3181a06cb5

DO - 10.1249/MSS.0b013e3181a06cb5

M3 - Article

VL - 41

SP - 1721

EP - 1728

JO - Medicine & Science in Sports & Exercise

JF - Medicine & Science in Sports & Exercise

SN - 0195-9131

IS - 9

ER -