BACKGROUND: The walling speed maintained during a moderate 1-km treadmill walk (1k-TWT) has been demonstrated to be a valid tool for estimating peak oxygen uptake (VO2peak), and to be inversely related to long-term survival and hospitalization in outpatients with cardiovascular disease (CVD). We aimed to examine whether 500-meters and 1-k moderate treadmill-walking tests equally estimate VO2peak in male outpatients with CVD.METHODS: One hundred forty-two clinically stable male outpatients with CVD, aged 34-92 years, referred to an exercise-based secondary prevention program, performed a moderate and perceptually-regulated (11-13/20 on the Borg Scale) 1k-TWT. Age, height, weight, time to walk 500-meter and the entire 1000-meter, and the corresponding heart rates were entered into validated equations to estimate VO2peak.RESULTS: VO(2peak )estimated from the 500-meters test was not different from that estimated from the 1k test (25.1+5.1 vs. 25.1 +/- 5.2 mL/kg/min). The correlation coefficient between the two was 0.98. The slope and the intercept of the relationship between the 500-meter and 1k tests were not different from the line of identity. Bland-Altman analysis demonstrated that 969'o of the data points were within two standard deviations (from -1.9 to 1.7 mL/kg/min).CONCLUSIONS: The 500-meter treadmill-walking test is a reliable method for estimating VO2peak in stable male outpatients with CVD. A shorter version of the test, 500-meter, provides similar information as that from the original 1k test, but is more time efficient. These findings have practical implications in the context of transitioning patients from clinically based and supervised programs to fitness facilities or self-guided exercise programs.

500-meter and 1000-meter moderate walks equally assess cardiorespiratory fitness in male outpatients with cardiovascular diseases

Gianni MAZZONI
Primo
;
Giorgio CHIARANDA
Secondo
;
Biagio SASSONE;Giovanni PASANISI;simona MANDINI
;
Francesco CONCONI
Penultimo
;
Giovanni GRAZZI
Ultimo
2018

Abstract

BACKGROUND: The walling speed maintained during a moderate 1-km treadmill walk (1k-TWT) has been demonstrated to be a valid tool for estimating peak oxygen uptake (VO2peak), and to be inversely related to long-term survival and hospitalization in outpatients with cardiovascular disease (CVD). We aimed to examine whether 500-meters and 1-k moderate treadmill-walking tests equally estimate VO2peak in male outpatients with CVD.METHODS: One hundred forty-two clinically stable male outpatients with CVD, aged 34-92 years, referred to an exercise-based secondary prevention program, performed a moderate and perceptually-regulated (11-13/20 on the Borg Scale) 1k-TWT. Age, height, weight, time to walk 500-meter and the entire 1000-meter, and the corresponding heart rates were entered into validated equations to estimate VO2peak.RESULTS: VO(2peak )estimated from the 500-meters test was not different from that estimated from the 1k test (25.1+5.1 vs. 25.1 +/- 5.2 mL/kg/min). The correlation coefficient between the two was 0.98. The slope and the intercept of the relationship between the 500-meter and 1k tests were not different from the line of identity. Bland-Altman analysis demonstrated that 969'o of the data points were within two standard deviations (from -1.9 to 1.7 mL/kg/min).CONCLUSIONS: The 500-meter treadmill-walking test is a reliable method for estimating VO2peak in stable male outpatients with CVD. A shorter version of the test, 500-meter, provides similar information as that from the original 1k test, but is more time efficient. These findings have practical implications in the context of transitioning patients from clinically based and supervised programs to fitness facilities or self-guided exercise programs.
Mazzoni, Gianni; Chiaranda, Giorgio; Myers, Jonathan; Sassone, Biagio; Pasanisi, Giovanni; Mandini, Simona; Volpato, Sergio; Conconi, Francesco; Grazzi, Giovanni
File in questo prodotto:
File Dimensione Formato  
mazzoni2018.pdf

solo gestori archivio

Descrizione: Full text editoriale
Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 474.46 kB
Formato Adobe PDF
474.46 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2383887
Citazioni
  • ???jsp.display-item.citation.pmc??? 1
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 8
social impact