title: Assessment of exercise capacity in African patients with chronic heart failure using six minutes walk test.
abstract: BACKGROUND
  The purpose of this study was to assess the functional capacity during a 6-minute corridor walk and a 6-minute bicycle ergometry exercise in patients with chronic heart failure (CHF).
  
  
  METHODS
  Thirty five patients with stable CHF were recruited for the study. Each subject performed six minutes corridor walk and 6-minute bicycle ergometry testing. The 6-minute walk required the subjects to walk at a self selected speed on a 20 meter marked level ground for 6-minute. All the subjects also performed a 6-minute exercise on a stationary bicycle ergometer with initial resistance of 20 watts and increased by 10 watts after 3-minutes. The perceived rate of exertion was assessed using a modified Borg Scale after each exercise mode. The maximum oxygen consumption was derived using American College of Sport Medicine equations.
  
  
  RESULTS
  Result showed high positive correlation between distance walked in the 6-minute and the maximum volume of oxygen (VO(2) max) (r = 0.65, P < 0.01). The average distance walked was 327 m +/- 12.03 m. The VO(2) max estimated during bicycle ergometry was higher (13.7 +/- 1.9 L) than during the six minutes walk (8.9 +/- 1.2 L).
  
  
  CONCLUSIONS
  Six minutes walk could be useful to evaluate exercise tolerance in patients with chronic heart failure, while the bicycle ergometer could be more appropriate in the assessment of maximum functional capacity in these patients.
authors.affiliation: Department of Medical Rehabilitation, Obafemi Awolowo University, Ile-Ife, Nigeria;
authors.forename: Rufus A
authors.initials: RA
authors.lastname: Adedoyin
authors.forename: Samuel A
authors.initials: SA
authors.lastname: Adeyanju
authors.forename: Michael O
authors.initials: MO
authors.lastname: Balogun
authors.forename: Anthony O
authors.initials: AO
authors.lastname: Akintomide
authors.forename: Rasaaq A
authors.initials: RA
authors.lastname: Adebayo
authors.forename: Patience O
authors.initials: PO
authors.lastname: Akinwusi
authors.forename: Taofeek O
authors.initials: TO
authors.lastname: Awotidebe
references.citation: Cardiology. 1983;70(2):85-93
references.pmid: 6871897
references.citation: J Appl Physiol. 1972 Feb;32(2):185-8
references.pmid: 5007867
references.citation: Br Med J (Clin Res Ed). 1986 Mar 8;292(6521):653-5
references.pmid: 3081210
references.citation: Isr Med Assoc J. 1999 Nov;1(3):165-8
references.pmid: 10731326
references.citation: Circulation. 1988 Sep;78(3):506-15
references.pmid: 3409495
references.citation: Circulation. 2000 Sep 26;102(13):1591-7
references.pmid: 11004153
references.citation: Chest. 1996 Aug;110(2):310-2
references.pmid: 8697822
references.citation: Eur Heart J. 1988 Jun;9 Suppl H:55-8
references.pmid: 3169052
references.citation: Ann Intern Med. 1996 Jun 15;124(12):1051-7
references.pmid: 8633818
references.citation: Heart. 1996 Jul;76(1):42-9
references.pmid: 8774326
references.citation: Am Heart J. 1999 Oct;138(4 Pt 1):618-24
references.pmid: 10502205
references.citation: Am J Cardiol. 1981 Jan;47(1):33-9
references.pmid: 7457405
references.citation: Chest. 1996 Aug;110(2):325-32
references.pmid: 8697828
references.citation: Can Med Assoc J. 1985 Apr 15;132(8):919-23
references.pmid: 3978515
references.citation: Am J Cardiol. 1964 Dec;14:844-52
references.pmid: 14232808
references.citation: Eur Heart J. 2001 Mar;22(6):488-96
references.pmid: 11237544
references.citation: Br Heart J. 1987 Dec;58(6):559-66
references.pmid: 3322350
references.citation: Circulation. 1991 Mar;83(3):778-86
references.pmid: 1999029
references.citation: J Card Fail. 2009 May;15(4):334-40
references.pmid: 19398082
references.citation: Circulation. 1993 Jun;87(6 Suppl):VI5-16
references.pmid: 8500240
references.citation: Chest. 1984 Sep;86(3):375-82
references.pmid: 6467998
references.citation: Br Heart J. 1989 May;61(5):421-5
references.pmid: 2736193
references.citation: Am Heart J. 2002 Jul;144(1):23-30
references.pmid: 12094184
references.citation: Am J Cardiol. 1985 Jan 11;55(2):22A-31A
references.pmid: 3966407
references.citation: Am Heart J. 1999 Aug;138(2 Pt 1):291-8
references.pmid: 10426841