Maximum oxygen uptake utilising different treadmill protocols.

Davies, Bruce; Daggett, A.; Jakeman, Philip M.; Mulhall, JP

doi:10.1136/bjsm.18.2.74

Cited by 35 publications

(21 citation statements)

References 15 publications

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“…As _ V O 2max was higher when using both the Costill/Fox and A Ê strand protocols than the Bruce protocol, our results supported this hypothesis. Indeed, the Costill/Fox protocol produced a test duration of approximately 11 min, which is similar to what has been recommended (Davis et al 1984;McConnell 1988). On the other hand, we found a signi®cantly lower _ V O 2max when following the Bruce protocol.…”

Section: Discussionsupporting

confidence: 65%

“…Previous studies by Davis et al (1984) and McConnell and Clark (1988) have suggested that the most desirable test protocol for highly trained runners should involve the speed/gradient combination that is similar to what the individual uses during regular training. In this context, it was our hypothesis that the Costill/Fox protocol would yield the highest _ V O 2max among our trained subjects.…”

Section: Discussionmentioning

confidence: 98%

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Physiological comparisons among three maximal treadmill exercise protocols in trained and untrained individuals

et al. 2001

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The present investigation was undertaken to examine whether maximal oxygen uptake (VO2max) and anaerobic threshold (AT) measured during incremental treadmill exercise would be affected by the exercise protocol in trained and untrained individuals. Fifteen untrained men, 10 untrained women, and 12 trained individuals participated in this study. The Astrand, Bruce, and Costill/Fox protocols were selected for comparison. Each subject was tested using all three protocols and the three tests were conducted in a randomized counterbalanced order. During each test, oxygen uptake was measured every 30 s and the test was terminated according to the standard criteria. The VO2max was determined by averaging the two consecutive highest measurements, whereas AT was determined using ventilatory parameters following the V-slope technique. The Astrand, Bruce, and Costill/Fox protocols produced test durations of 9.8 (SEM 0.5), 12.4 (SEM 0.4), and 4.9 (SEM 0.3) min, respectively, in the untrained men, 9.0 (SEM 0.8), 11.0 (SEM 0.6), and 5.3 (SEM 0.6) min, respectively, in the untrained women, and 14.5 (SEM 0.5), 17.0 (SEM 0.5) and 10.4 (SEM 0.4) min, respectively, in the trained men. In the untrained men and women, no differences in VO2max were observed among the three different protocols, but AT was lower when using the Bruce compared to the Astrand protocol. In the trained men, VO2max and AT were lower when using the Bruce protocol than either the Astrand or Costill/Fox protocols. In conclusion, VO2max measured during treadmill exercise is not affected by the protocol of the test and using a running protocol of short duration (i.e. about 5 min) could be a time-efficient way of assessing VO2max in healthy untrained subjects. In trained subjects, however, a protocol consisting of running with small increments in gradient is effective in eliciting a higher VO2max. The lower AT associated with the Bruce protocol seen in both untrained and trained groups suggests this aerobic parameter is protocol dependent and this protocol dependency is not affected by training status.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 98%

Physiological comparisons among three maximal treadmill exercise protocols in trained and untrained individuals

et al. 2001

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“…The data cover the period from 1980 to 1989. V02m,r was measured [4][5][6] times per year. The highest and lowest values measured during the winter and summer seasons are presented in Table 2-4.…”

mentioning

confidence: 99%

Maximal oxygen uptake as a predictor of performance ability in women and men elite cross‐country skiers

Ingjer

1991

Scandinavian Med Sci Sports

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and men elite I cross-country skieps Ingjer F. Maximal oxygen uptake as a predictor of performance ability in women and men elite cross-country skiers. Scand J Med Sci Sports 1991: 1: 25-30.Maximal oxygen uptake (OolIMI) was measured in 51 females and males classified as either world-class, medium-class or less successful elite skiers. The OOlmat in the male world-class skiers was significantly higher (mean 85.6 ml-kg-'-min-' or 355 ml-min-I kg-y3) than in the other elite skiers. World-class and medium-class female skiers had identical mean OO2-expressed in mbkg-lemin-l (70.7 and 70.6, respectively), but the values differed significantly when the unit rnl.min-l.kg-'" was used (274 and 264, respectively). 00,-expressed as ml.min-1-kg-"3 reflects differences in performance capability among elite skiers better than the unit I ml.kg-'.min-'.Maximal oxygen uptake (Uo2px) is generally accepted as an important determinant of aerobic endurance capacity, and it is probably the most commonly used physiological parameter in assessing performance capability in such endurance-trained athletes as distance runners and cross-country skiers (1-5). Thus, there is a strong correlation between running performance and oo2,, when the groups investigated are heterogeneous in terms of performance capacity (6-8). On the other hand, in populations with more homogeneously trained athletes, the correlation between running performance and Oo2m,, is often reported to be relatively weak (9-13). It should be kept in mind that o0,_, is only one of several factors that affect performance level in cross-country skiing.In contrast to the numerous studies aimed at correlating performance level and Ooz, , in runners, only a few investigations have dealt with the relationship between performance ability and V02MI in elite cross-country skiers (14-19). Although maximal aerobic power (ml-kg-'-min-') is an important factor for predicting success in 5-to 15-km races (17,20), the question of which unit of V0>-. measurement best reflects the performance ability of cross-country skiers remains debatable.Thus, Bergh (16) recommended expressing Vo, in ml.min-'-kg-2m rather than in ml-kg-l.min-'.-m*x In running, the performance level of the competitors is usually judged from one or a few running events. In cross-country skiing the performance is more affected by such factors as snow conditions, equipment and ski preparation proce- F. lngjerLaboratory of Physiology, Norwegian University of Sport and Physical Education, Oslo, Norway dures. Results from single cross-country races may therefore not always reflect the real difference in endurance performance between the competitors. Positioning on the World Cup list at the end of the skiing season, however, .gives a better picture of the performance level of the individuals.This investigation was undertaken to study the relationship between Oo2,, expressed in different units and performance ability as judged from the World Cup ranking list of female and male elite cross-country skiers. Material and methods

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“…ergometer can simulate specific muscle actions during certain activities, the more valid a criterion it becomes [7]. Studies with tethered running using an NMT have provided a very effective way to measure power output, because this method provides a database of strength and velocity [11,21,28].…”

Section: Introductionmentioning

confidence: 99%

Reliability of the Three-minute All-out Test for Non-motorized Treadmill Tethered Running

et al. 2016

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The 3-min all-out test was developed and validated on a cycle ergometer using a modification of a linear mathematical equation (1/time vs. power) obtained from the original critical power model. The purpose of this development was to obtain, in a single test, the aerobic and anaerobic capacity parameters and identify the exercise transition moment from heavy to severe intensity. The aim of this study was to propose an adaptation of the all-out 3-min cycle ergometer to a non-motorized treadmill with tethered running. In addition, we tested the reproducibility of this adapted protocol, highlighting the need for mechanical power evaluation using a specific ergometer. Consequently, 10 physically active individuals visited the laboratory 4 times for testing and data collection. The results suggested that the protocol adaptation for the 3-min all-out test for non-motorized treadmill with tethered running was reproducible and feasible. It was also possible to show that the AO3 application in this ergometer ensures the specificity of the sports that involve the running exercise, from assessment of both aerobic and anaerobic parameters, accomplished in a single day of application.

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Maximum oxygen uptake utilising different treadmill protocols.

Cited by 35 publications

References 15 publications

Physiological comparisons among three maximal treadmill exercise protocols in trained and untrained individuals

Physiological comparisons among three maximal treadmill exercise protocols in trained and untrained individuals

Maximal oxygen uptake as a predictor of performance ability in women and men elite cross‐country skiers

Reliability of the Three-minute All-out Test for Non-motorized Treadmill Tethered Running

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