Physiological aspects of running economy

Morgan, Don W.; Craib, M.

doi:10.1249/00005768-199204000-00011

Cited by 82 publications

(69 citation statements)

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“…These mechanisms include an increase in heart rate to compensate for decreasing stroke volume, an increase in core temperature as a result of thermal stress, an increase in blood catecholamines, a change in substrate utilization with an increase in fat metabolism resulting from a decrease in muscle and liver glycogen, and 8 a decrease in biomechanical efficiency, (Bailey and Pate 1991;Kalis et al 1988;Morgan and Craib 1992;Williams and Cavanagh 1987).…”

Section: Discussionmentioning

confidence: 99%

“…it is essential to know about the daily stabiliry of a person 50 that the efficacy of a particular intervention is established (Morgan et al. 1989b: Morgan & Craib. 1992).…”

Section: Intra-individual Variabilit): In Running Economymentioning

confidence: 99%

“…Following prolonged activity, increases in va! have been associated with increases in heart rate, core temperature, fat catabolism and blood catecholamines as weIl as decreases in biomechanical efficiency, muscle glycogen and liver glycogen content (Bailey and Pate 1991;Kalis et al 1988;Morgan and Craib 1992;Williams and Cavanagh 1987). In contrast, sorne studies have shown that long duration runs at 74 to 90% of VO Zmu did not alter RE (Dressendorfer 1991;Martin et al 1987;Morgan et al 1990.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 99%

“…it is essential to know about the daily stabiliry of a person 50 that the efficacy of a particular intervention is established (Morgan et al. 1989b: Morgan & Craib. 1992).…”

Section: Intra-individual Variabilit): In Running Economymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…RE is typically defined as the energy demand for a given velocity of submaximal running, and it is determined by measuring the steady state consumption of oxygen (VO 2 ) (Saunders et al, 2004). Many factors have been associated with RE, including temperature, heart rate, ventilation, VO 2max , age, gender, body mass, muscle fiber type distribution, and other biomechanical variables (Morgan et al, 1989;Daniels & Daniels, 1992;Morgan & Craib, 1992;Pate et al, 1989;Saunders et al, 2004).…”

Section: Dimitrios Balasas; Efstratios Vamvakoudis; Kosmas Christoulamentioning

confidence: 99%

Untitled

Balasas¹,

Prantsidis²,

Christoulas³

et al. 2013

JPES

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Abstract:The purpose of this study was to investigate the effect of systematic beach volleyball training and competition on running economy (RE) and VO 2max of indoor volleyball players. Thus, the participants underwent two measurements. The first measurement (PRE) occurred before the players begin systematic beach volleyball training, just after the end of indoor volleyball season. The second measurement (POST) occurred after the final tournament of the beach volleyball season, twelve weeks after the first measurement. All of them underwent anthropometric measurements, body fat assessment and performed running on treadmill at speeds of 8, 10 and 12 km·h-1 for three minutes at each level. Parameters such as heart rate (HR), VO 2 in absolute and relative values, respiratory exchange ratio (RER) and minute ventilation (VE) were recorded. Moreover, VO 2max was also tested. Body mass and fat were significantly decreased after the beach volleyball period. HR decreased significantly (p<.01) at 8, 12 and 10 km·h -1 and VO 2 differ significantly, with a decrease in 8 (p<.05) 10 (p<.01) and 12 km·h -1 (p<.001) in both absolute (l·min -1 ) and relative (ml·kg -1 ·min -1 ) values, showing an improvement of RE. RER decreased significantly at the speeds of 10 (p<.05) and 12 km·h-1 (p<.01), whereas VE recorded a significant difference in 12 km·h -1 (p<.001). Additionally, the results indicate a significant increase in VO 2max (p<.01) both in absolute (l·min -1 ) and relative (ml·kg -1 ·min -1 ) values. Conclusively, it seems that systematic beach volleyball training leads to an improvement of RE and VO 2max of the amateur indoor volleyball players. These findings indicate that the improvements caused by beach volleyball training can be considerably effective in the performance of the athletes throughout the total duration of a volleyball game.

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“…However, in general, studies with both a cross-sectional and longitudinal design demonstrate equivocal findings with regard to the relationship between  VO2 during constant velocity running and performance (Morgan and Craib, 1992).…”

Section: Introductionmentioning

confidence: 96%