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Stride frequency in relation to oxygen consumption in experienced and novice runners


, : Stride frequency in relation to oxygen consumption in experienced and novice runners. European Journal of Sport Science 14(3): 251-258

We hypothesised that experienced runners would select a stride frequency closer to the optimum (minimal energy costs) than would novice runners. In addition, we expected that optimal stride frequency could simply be determined by monitoring heart rate without measuring oxygen consumption ( O2). Ten healthy males (mean s: 24 2 year) with no running training experience and 10 trained runners of similar age ran at constant treadmill speed corresponding to 80% of individual ventilatory threshold. For two days, they ran at seven different stride frequencies (self-selected stride frequency 18%) imposed by a metronome. Optimal stride frequency was based on the minimum of a second-order polynomial equation fitted through steady state O2 at each stride frequency. Running cost (mean s) at optimal stride frequency was higher (P < 0.05) in novice (236 31 ml O2 kg?1.km?1) than trained (189 13 ml O2 kg?1.km?1) runners. Self-selected stride frequency (mean s; strides.min?1) for novice (77.8 2.8) and trained runners (84.4 5.3) were lower (P < 0.05) than optimal stride frequency (respectively, 84.9 5.0 and 87.1 4.8). The difference between self-selected and optimal stride frequency was smaller (P < 0.05) for trained runners. In both the groups optimal stride frequency established with heart rate was not different (P > 0.3) from optimal stride frequency based on O2. In each group and despite limited variation between participants, optimal stride frequencies derived from O2 and heart rate were related (r > 0.7; P < 0.05). In conclusion, trained runners chose a stride frequency closer to the optimum for energy expenditure than novices. Heart rate could be used to establish optimal stride frequency.

US$19.90

PMID: 23581294

DOI: 10.1080/17461391.2013.783627


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Dinarvand, R.; Mahmoodi, S.; Farboud, E.; Salehi, M.; Atyabi, F., 2005: Preparation of gelatin microspheres containing lactic acid--effect of cross-linking on drug release. In this study, gelatin microspheres containing lactic acid were prepared by the polymerization technique using glutaraldehyde as the cross-linking agent. Dried microspheres were loaded by immersing them in an aqueous solution of lactic acid. In or...

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Seitz Jeffery; Pasteris Jill Dill; Wopenka Brigitte, 1987: Characterization of CO (sub 2ú-CH (sub 4ú-H (sub 2úO fluid inclusions by microthermometry and laser Raman microprobe spectroscopy; inferences for clathrate and fluid equilibria. Geochimica et Cosmochimica Acta 51(6): 1651-1664

Tripathi, SR.; Sharma, SK., 1985: Studies on host range, food preference and food consumption by Heliothis armigera (Hubner) (Lepidoptera Noctuidae). Heliothis armigera is a serious pest of gram [Cicer arietinum] in India but also migrates to other crops when gram is not available. In food-plant preference studies in the laboratory at Gorakhpur, the order of preference appeared to be gram, pige...

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Hoffman, R.P.; Sinkey, C.A.; Anderson, E.A., 1999: Microneurographically determined muscle sympathetic nerve activity levels are reproducible in insulin-dependent diabetes mellitus. Our objective was to determine whether microneurographically determined muscle sympathetic nerve activity (MSNA) levels are equally reproducible in control and insulin-dependent diabetes mellitus (IDDM) subjects. We used a retrospective review of...

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Kaiser, G.; Bittel, M., 1991: Results of extended craniectomy including supraorbital advancement in premature coronal and frontal craniosynostosis. Between 1982-1989 an extended craniectomy including supraorbital advancement was performed in 27 infants. Age ranged from 2.5 to 10 months (median 4.5 months). Six had a premature synostosis of the frontal suture, 11 a monolateral synostosis of th...

Tan M.H.; Chiasson J.L.; Colle E.; Hetenyi G.Jr; Molnar G.D.; Roxburgh J.M.; Slotin L.A.; Zinman B., 1985: Diabetes related research in canada. Canadian Medical Association Journal 133(2): 103-105

Milanowski, D.J.; Keilman, J.; Guo, C.; Mocek, U., 2011: Isolation and identification of five impurities of ALB 109564(a) drug substance. Four low-level impurities were detected during the development and scale up of the synthesis of ALB 109564(a). These impurities were isolated and characterized in order to determine how they originated in the drug substance. The information allowe...