Daily Variability in Running Economy Among Well-Trained Male and Female Distance Runners

Morgan, Don W.; Craib, M.; Krahenbuhl, Gary S.; Woodall, Keri; Jordan, Shawn; Filarski, Kristen; Burleson, C.; Williams, Tracy

doi:10.1080/02701367.1994.10762210

Cited by 30 publications

(23 citation statements)

References 14 publications

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“…The O 2 max was retested 3 days after the initial test. In addition, the O 2 max was tested after the completion of all trials to evaluate whether any variability in O 2 might be related to changes in O 2 max occurring across the 4-week testing period (Morgan et al 1994).…”

Section: Protocolmentioning

confidence: 99%

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Running economy deteriorates following 60?min of exercise at 80% V?O2max

Sproule

1998

European Journal of Applied Physiology

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Fifteen young adult Singaporean male physical education students maximum oxygen consumption [(VO2max) = 56 (4.7) ml x kg(-1) min(-1)] performed three prolonged runs in a counterbalanced design. The running bouts varied in time (40 vs 60 min) and intensity (70% vs 80% VO2max). Each prolonged run was separated by 7 days. The running economy (RE) at 10.8 km x h(-1) during 10-min running bouts was measured before (RE1) and after (RE2) each prolonged run. A control study involved monitoring RE at 10.8 km x h(-1) before and after 60 min rest. There were no differences between RE1 and RE2 values during the control run. However, there were differences between RE1 and RE2 values when separated by a prolonged run. For example, the mean (SD) changes in oxygen consumption (ml x kg(-1) x min[-1]) values were 38.2 (2.5) versus 40.1 (2.6) (40 min at 80% VO2max), 38.9 (2.8) versus 41.5 [2.6] (60 min at 70% VO2max), and 39.0 (3.1) versus 42.7 (2.9) (60 min at 80% V02max; P < 0.01). The results of this investigation support the hypothesis that RE deteriorates during prolonged running, and that the magnitude of the deterioration in RE increases with both increasing exercise intensity and duration.

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Section: Protocolmentioning

confidence: 99%

“…In addition daily variability in RE among moderately and well-trained distance runners has been examined previously (Williams et al 1991;Morgan et al 1994) and found to be stable (i.e. <2 ml á kg A1 á min A1 ) for the majority of individuals.…”

Section: Introductionmentioning

confidence: 98%

Running economy deteriorates following 60?min of exercise at 80% V?O2max

Sproule

1998

European Journal of Applied Physiology

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“…Instrumental error accounts for 3% of the total variation. while 97 % is attributed to body weight variation (Morgan et al .. 1990b Becque et al. 1993: Brisswalter & Legros.…”

Section: Intra-individual Variabilit): In Running Economymentioning

confidence: 99%

Effect of intense interval workouts on running economy using three recovery durations

Zavorsky

Montgomery

Pearsall

1998

European Journal of Applied Physiology

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This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, sorne thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of tbis reproduction is dependent upon tbe quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will he noted. Also, if unauthorized copyright material had ta he' removed, a note will indieate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left ta right in equai sections with smaII overlaps. Each original is aIso photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reprodueed xerographically in tlûs eopy. Higher quality 6" x 9" black and white photographie prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact lTh1I directly to order. The author bas granted a nonexclusive licence allowing the National Library of Canada to reproduce, loan, distribute or sell copies of this thesis in microform, paper or electronic formats. DMIThe author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author' s penmSSlon.L'auteur a accordé une licence non exclusive permettant à la Bibliothèque nationale du Canada de reproduire, prêter, distribuer ou vendre des copies de cette thèse sous la forme de microfiche/film, de reproduction sur papier ou sur format électronique.L'auteur conserve la propriété du droit d'auteur qui protège cette thèse.Ni la thèse ni des extraits substantiels de celle-ci ne doivent être imprimés ou autrement reproduits sans son autorisation. 0-612-29521-4Canad~ ABSTRACTThe purposes of this study were to determine if (1) RE is adversely affected by intense interval bouts of 10 x 400-m, and (2) if there is an interaction effect between RE and recovery duration during the workouts. Twelve highly trained male runners (VO:!max = 72.5 ± 4.3 ml-kg-'min-' ) performed 3 interval workouts of 10 x 400-m with a minimum of 4 days between runs. Recovery between repetitions was randomly assigned at 60, 120or 180 s. The velocity for each 4oo-m run was determined from a treadmill V0 2max test.The average running velocity was 357.9 ± 9.0 mmin-I .

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“…Repeated measures designs such as those used by Morgan et al (1994) and Williams et al (1991) could answer this question. The data from these designs could be used to compute b 0 and b 1 on multiple occasions.…”

Section: Discussionmentioning

confidence: 99%

“…The reference lists from articles identified in the PubMed search were reviewed to identify additional candidate studies. Table 1 describes the 5 studies (Costill et al, 1973;di Prampero et al, 1993;Morgan et al, 1994;Thorstensson, 1986;Williams et al, 1991) that reported the data for individuals who completed submaximal runs at 3 or more speeds. The 60 participants in those studies formed the sample for the present analyses.…”

Section: Data Sourcesmentioning

confidence: 99%

Running Economy: Comparing Alternative Measurement Models

Vickers¹

2005

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Daily Variability in Running Economy Among Well-Trained Male and Female Distance Runners

Cited by 30 publications

References 14 publications

Running economy deteriorates following 60?min of exercise at 80% V?O2max

Running economy deteriorates following 60?min of exercise at 80% V?O2max

Effect of intense interval workouts on running economy using three recovery durations

Running Economy: Comparing Alternative Measurement Models

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