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Day-to-day variation in oxygen consumption at submaximal loads during ergometer cycling by adolescents

Wergel-Kolmert, Ulla LU ; Ågehäll, Anna; Rosenberg, Nils and Wohlfart, Björn LU (2001) In Clinical Physiology 21(2). p.135-140
Abstract
The day-to-day variation in oxygen consumption ((V) over dot O-2) during ergometer cycling by 20 healthy adolescents, 10 females and 10 males, was measured using indirect calorimetry. The two sets of measurements were performed on two consecutive days. Great care was taken to minimize possible disturbing factors. Cycling started at 50 and 100 W for female and male adolescents, respectively. The load was increased at a rate of 5 W 30 s(-1). In order to reach steady state, the load was kept constant for 3.5 min twice during the cycling session, at 100 and 130 W for the females and at 130 and 160 W for the males. Cycling continued until exhaustion. The maximal loads were 196 W (mean) and 271 W (mean) for females and males, respectively. At... (More)
The day-to-day variation in oxygen consumption ((V) over dot O-2) during ergometer cycling by 20 healthy adolescents, 10 females and 10 males, was measured using indirect calorimetry. The two sets of measurements were performed on two consecutive days. Great care was taken to minimize possible disturbing factors. Cycling started at 50 and 100 W for female and male adolescents, respectively. The load was increased at a rate of 5 W 30 s(-1). In order to reach steady state, the load was kept constant for 3.5 min twice during the cycling session, at 100 and 130 W for the females and at 130 and 160 W for the males. Cycling continued until exhaustion. The maximal loads were 196 W (mean) and 271 W (mean) for females and males, respectively. At the maximal loads the day-to-day variation (+/-2 SD) in oxygen consumption ((V) over dot O-2) was +/-330 ml min(-1) for females and 390 ml min(-1) for males. At the submaximal loads the day-to-day variation in heart rate (HR) was 9.3 beats min(-1) (+/-2 SD) (coefficient of variation, CV = 3.4% at 130 W) for both sexes. The day-today variation in oxygen consumption ((V) over dot O-2) was +/-199 ml min(-1) (+/-2 SD) at the different submaximal loads and did not differ between female and male adolescents (CV = 5.7% at 130 W). This natural day-to-day variation must be taken into consideration when using a submaximal ergometer cycling test for the evaluation of physical capacity in the two sexes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Clinical Physiology
volume
21
issue
2
pages
135 - 140
publisher
Wiley Online Library
external identifiers
  • wos:000168380400001
  • scopus:0035050274
ISSN
1365-2281
DOI
10.1046/j.1365-2281.2001.00313.x
language
English
LU publication?
yes
id
b7398a6c-05ac-4425-8ee8-e98aa358166f (old id 1119272)
date added to LUP
2008-07-18 13:54:51
date last changed
2018-01-07 05:15:45
@article{b7398a6c-05ac-4425-8ee8-e98aa358166f,
  abstract     = {The day-to-day variation in oxygen consumption ((V) over dot O-2) during ergometer cycling by 20 healthy adolescents, 10 females and 10 males, was measured using indirect calorimetry. The two sets of measurements were performed on two consecutive days. Great care was taken to minimize possible disturbing factors. Cycling started at 50 and 100 W for female and male adolescents, respectively. The load was increased at a rate of 5 W 30 s(-1). In order to reach steady state, the load was kept constant for 3.5 min twice during the cycling session, at 100 and 130 W for the females and at 130 and 160 W for the males. Cycling continued until exhaustion. The maximal loads were 196 W (mean) and 271 W (mean) for females and males, respectively. At the maximal loads the day-to-day variation (+/-2 SD) in oxygen consumption ((V) over dot O-2) was +/-330 ml min(-1) for females and 390 ml min(-1) for males. At the submaximal loads the day-to-day variation in heart rate (HR) was 9.3 beats min(-1) (+/-2 SD) (coefficient of variation, CV = 3.4% at 130 W) for both sexes. The day-today variation in oxygen consumption ((V) over dot O-2) was +/-199 ml min(-1) (+/-2 SD) at the different submaximal loads and did not differ between female and male adolescents (CV = 5.7% at 130 W). This natural day-to-day variation must be taken into consideration when using a submaximal ergometer cycling test for the evaluation of physical capacity in the two sexes.},
  author       = {Wergel-Kolmert, Ulla and Ågehäll, Anna and Rosenberg, Nils and Wohlfart, Björn},
  issn         = {1365-2281},
  language     = {eng},
  number       = {2},
  pages        = {135--140},
  publisher    = {Wiley Online Library},
  series       = {Clinical Physiology},
  title        = {Day-to-day variation in oxygen consumption at submaximal loads during ergometer cycling by adolescents},
  url          = {http://dx.doi.org/10.1046/j.1365-2281.2001.00313.x},
  volume       = {21},
  year         = {2001},
}