Abstract
The purpose of the present study was to investigate use of the onset of metabolic acidosis (anaerobic threshold) as a criterion measure of submaximum fitness. [Vdot]O2 max and the onset of metabolic acidosis (using gas exchange variables;) were determined. Twenty-eight subjects completed, without work decrement, a submaximum work task of 300 kgm.min-1 for an 8-minute duration. Matching individuals with respect to [Vdot]O2 max (within 30 ml·min-1) yielded 11 matched pairs. These pairs were divided with respect to [Vdot]O2 uptake at the point of metabolic acidosis ([Vdot]O2-AT). This resulted in significant differences in [Vdot]O2-AT (X difference = 254 ml, p `.05) between the equal [Vdot]O2 max groups. Examining submaximum exercise responses revealed that the group with higher [Vdot]O2-AT values took up oxygen to steady state at a faster rate (p `.05), exhibited a slightly lower steady state [Vdot]O2 value, and showed a tendency for a faster rate of [Vdot]O2 uptake during recovery to baseline values. Dividing the 28 subjects into high and low [Vdot]O2-AT groups, regardless of [Vdot]O2 max (X difference for [Vdot]O2-AT = 367 ml, p `.05), resulted in a faster rate of oxygen uptake to a lower steady state [Vdot]O2 value (p `.05) during the submaximum exercise bout for the high [Vdot]O2-AT group. In addition, the high [Vdot]O2-AT group produced fewer exercise and recovery Kcal (p `.05) than the low [Vdot]O2-AT group during submaximum exercise. It was concluded that the onset of metabolic acidosis may be a better measure for evaluating submaximum fitness than [Vdot]O2 max.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 218-227 |
| Number of pages | 10 |
| Journal | Research Quarterly of the American Alliance for Health, Physical Education and Recreation |
| Volume | 49 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1978 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Nephrology
- Physical Therapy, Sports Therapy and Rehabilitation
- Medicine(all)
Cite this
Onset of metabolic acidosis (Anaerobic Threshold) as a criterion measure of submaximum fitness. / Weltman, Arthur; Katch, Victor; Sady, Stanley; Freedson, Patty.
In: Research Quarterly of the American Alliance for Health, Physical Education and Recreation, Vol. 49, No. 2, 1978, p. 218-227.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Onset of metabolic acidosis (Anaerobic Threshold) as a criterion measure of submaximum fitness
AU - Weltman, Arthur
AU - Katch, Victor
AU - Sady, Stanley
AU - Freedson, Patty
PY - 1978
Y1 - 1978
N2 - The purpose of the present study was to investigate use of the onset of metabolic acidosis (anaerobic threshold) as a criterion measure of submaximum fitness. [Vdot]O2 max and the onset of metabolic acidosis (using gas exchange variables;) were determined. Twenty-eight subjects completed, without work decrement, a submaximum work task of 300 kgm.min-1 for an 8-minute duration. Matching individuals with respect to [Vdot]O2 max (within 30 ml·min-1) yielded 11 matched pairs. These pairs were divided with respect to [Vdot]O2 uptake at the point of metabolic acidosis ([Vdot]O2-AT). This resulted in significant differences in [Vdot]O2-AT (X difference = 254 ml, p `.05) between the equal [Vdot]O2 max groups. Examining submaximum exercise responses revealed that the group with higher [Vdot]O2-AT values took up oxygen to steady state at a faster rate (p `.05), exhibited a slightly lower steady state [Vdot]O2 value, and showed a tendency for a faster rate of [Vdot]O2 uptake during recovery to baseline values. Dividing the 28 subjects into high and low [Vdot]O2-AT groups, regardless of [Vdot]O2 max (X difference for [Vdot]O2-AT = 367 ml, p `.05), resulted in a faster rate of oxygen uptake to a lower steady state [Vdot]O2 value (p `.05) during the submaximum exercise bout for the high [Vdot]O2-AT group. In addition, the high [Vdot]O2-AT group produced fewer exercise and recovery Kcal (p `.05) than the low [Vdot]O2-AT group during submaximum exercise. It was concluded that the onset of metabolic acidosis may be a better measure for evaluating submaximum fitness than [Vdot]O2 max.
AB - The purpose of the present study was to investigate use of the onset of metabolic acidosis (anaerobic threshold) as a criterion measure of submaximum fitness. [Vdot]O2 max and the onset of metabolic acidosis (using gas exchange variables;) were determined. Twenty-eight subjects completed, without work decrement, a submaximum work task of 300 kgm.min-1 for an 8-minute duration. Matching individuals with respect to [Vdot]O2 max (within 30 ml·min-1) yielded 11 matched pairs. These pairs were divided with respect to [Vdot]O2 uptake at the point of metabolic acidosis ([Vdot]O2-AT). This resulted in significant differences in [Vdot]O2-AT (X difference = 254 ml, p `.05) between the equal [Vdot]O2 max groups. Examining submaximum exercise responses revealed that the group with higher [Vdot]O2-AT values took up oxygen to steady state at a faster rate (p `.05), exhibited a slightly lower steady state [Vdot]O2 value, and showed a tendency for a faster rate of [Vdot]O2 uptake during recovery to baseline values. Dividing the 28 subjects into high and low [Vdot]O2-AT groups, regardless of [Vdot]O2 max (X difference for [Vdot]O2-AT = 367 ml, p `.05), resulted in a faster rate of oxygen uptake to a lower steady state [Vdot]O2 value (p `.05) during the submaximum exercise bout for the high [Vdot]O2-AT group. In addition, the high [Vdot]O2-AT group produced fewer exercise and recovery Kcal (p `.05) than the low [Vdot]O2-AT group during submaximum exercise. It was concluded that the onset of metabolic acidosis may be a better measure for evaluating submaximum fitness than [Vdot]O2 max.
UR - http://www.scopus.com/inward/record.url?scp=0017966953&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0017966953&partnerID=8YFLogxK
U2 - 10.1080/10671315.1978.10615526
DO - 10.1080/10671315.1978.10615526
M3 - Article
C2 - 725288
AN - SCOPUS:0017966953
VL - 49
SP - 218
EP - 227
JO - Research Quarterly of the American Alliance for Health, Physical Education and Recreation
JF - Research Quarterly of the American Alliance for Health, Physical Education and Recreation
SN - 1067-1315
IS - 2
ER -