Does the incremental shuttle walk test require maximal effort in young obese women?

Does the incremental shuttle walk test require maximal effort in young obese women?

Author Jurgensen, S. P. Google Scholar
Trimer, R. Google Scholar
Di Thommazo-Luporini, L. Google Scholar
Dourado, Victor Zuniga Autor UNIFESP Google Scholar
Bonjorno-Junior, J. C. Google Scholar
Oliveira, C. R. Google Scholar
Arena, R. Google Scholar
Borghi-Silva, A. Google Scholar
Abstract Obesity is a chronic disease with a multifaceted treatment approach that includes nutritional counseling, structured exercise training, and increased daily physical activity. Increased body mass elicits higher cardiovascular, ventilatory and metabolic demands to varying degrees during exercise. With functional capacity assessment, this variability can be evaluated so individualized guidance for exercise training and daily physical activity can be provided. The aim of the present study was to compare cardiovascular, ventilatory and metabolic responses obtained during a symptom-limited cardiopulmonary exercise test (CPX) on a treadmill to responses obtained by the incremental shuttle walk test (ISWT) in obese women and to propose a peak oxygen consumption (VO2) prediction equation through variables obtained during the ISWT. Forty obese women (BMI >= 30 kg/m(2)) performed one treadmill CPX and two ISWTs. Heart rate (HR), arterial blood pressure (ABP) and perceived exertion by the Borg scale were measured at rest, during each stage of the exercise protocol, and throughout the recovery period. The predicted maximal heart rate (HRmax) was calculated (210 - age in years) (16) and compared to the HR response during the CPX. Peak VO2 obtained during CPX correlated significantly (P<0.05) with ISWT peak VO2 (r=0.79) as well as ISWT distance (r=0.65). The predictive model for CPX peak VO2, using age and ISWT distance explained 67% of the variability. The current study indicates the ISWT may be used to predict aerobic capacity in obese women when CPX is not a viable option.
Keywords Incremental Shuttle Walk Test
ObesityHabitual Physical-Activity
Treadmill Test
Language English
Sponsor Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2010/03030-0]
Grant number FAPESP: 2010/03030-0
Date 2016
Published in Brazilian Journal Of Medical And Biological Research. Sao paulo, v. 49, n. 8, p. e5229, 2016.
ISSN 0100-879X (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent e5229
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000379745800003
SciELO ID S0100-879X2016000800703 (statistics in SciELO)

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