Tags

Type your tag names separated by a space and hit enter

Effects of pseudoephedrine on maximal cycling power and submaximal cycling efficiency.
Med Sci Sports Exerc 2003; 35(8):1316-9MS

Abstract

PURPOSE

To study the effects of a therapeutic dose of pseudoephedrine on anaerobic cycling power and aerobic cycling efficiency.

METHODS

Eleven healthy moderately trained males (VO (2peak) 4.4 +/- 0.8 L x min(-1) participated in a double-blinded crossover design. Subjects underwent baseline (B) tests for anaerobic (Wingate test) and aerobic (VO (2peak) test) cycling power. Subjects ingested either 60 mg of pseudoephedrine hydrochloride (D) or a placebo (P) and, after 90 min of rest, a Wingate and a cycling efficiency test were performed. During the cycling efficiency test, heart rate (HR) and VO(2) were averaged for the last 5 min of a 10-min cycle at 40% and 60% of the peak power achieved during the VO (2peak) test.

RESULTS

There were no significant differences in peak power (B = 860 +/- 154, D = 926 +/- 124, P = 908 +/- 118 W), total work (B = 20 +/- 3, D = 21 +/- 3, P = 21 +/- 3 kJ), or fatigue index (B = 39 +/- 8, D = 45 +/- 5, P = 43 +/- 5%). There were no significant differences in HR at 40% power (D = 138 +/- 10, P = 137 +/- 10 beats.min-1) or 60% power (D = 161 +/- 11, P = 160 +/- 11 beats x min(-1). There were no significant differences in cycling efficiency at 40% power (D = 18.8 +/- 1.8, P = 18.5 +/- 1.8%) or 60% power (D = 20.3 +/- 2.0, P = 20.1 +/- 2.1%).

CONCLUSION

A therapeutic dose of pseudoephedrine hydrochloride does not affect anaerobic cycling performance or aerobic cycling efficiency.

Authors+Show Affiliations

Allan McGavin Sports Medicine Centre and School of Human Kinetics, University of British Columbia, Vancouver, British Columbia, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

12900684

Citation

Hodges, Alastair N H., et al. "Effects of Pseudoephedrine On Maximal Cycling Power and Submaximal Cycling Efficiency." Medicine and Science in Sports and Exercise, vol. 35, no. 8, 2003, pp. 1316-9.
Hodges AN, Lynn BM, Bula JE, et al. Effects of pseudoephedrine on maximal cycling power and submaximal cycling efficiency. Med Sci Sports Exerc. 2003;35(8):1316-9.
Hodges, A. N., Lynn, B. M., Bula, J. E., Donaldson, M. G., Dagenais, M. O., & McKenzie, D. C. (2003). Effects of pseudoephedrine on maximal cycling power and submaximal cycling efficiency. Medicine and Science in Sports and Exercise, 35(8), pp. 1316-9.
Hodges AN, et al. Effects of Pseudoephedrine On Maximal Cycling Power and Submaximal Cycling Efficiency. Med Sci Sports Exerc. 2003;35(8):1316-9. PubMed PMID: 12900684.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of pseudoephedrine on maximal cycling power and submaximal cycling efficiency. AU - Hodges,Alastair N H, AU - Lynn,Brenna M, AU - Bula,Jonathan E, AU - Donaldson,Meghan G, AU - Dagenais,Marc O, AU - McKenzie,Donald C, PY - 2003/8/6/pubmed PY - 2003/12/12/medline PY - 2003/8/6/entrez SP - 1316 EP - 9 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 35 IS - 8 N2 - PURPOSE: To study the effects of a therapeutic dose of pseudoephedrine on anaerobic cycling power and aerobic cycling efficiency. METHODS: Eleven healthy moderately trained males (VO (2peak) 4.4 +/- 0.8 L x min(-1) participated in a double-blinded crossover design. Subjects underwent baseline (B) tests for anaerobic (Wingate test) and aerobic (VO (2peak) test) cycling power. Subjects ingested either 60 mg of pseudoephedrine hydrochloride (D) or a placebo (P) and, after 90 min of rest, a Wingate and a cycling efficiency test were performed. During the cycling efficiency test, heart rate (HR) and VO(2) were averaged for the last 5 min of a 10-min cycle at 40% and 60% of the peak power achieved during the VO (2peak) test. RESULTS: There were no significant differences in peak power (B = 860 +/- 154, D = 926 +/- 124, P = 908 +/- 118 W), total work (B = 20 +/- 3, D = 21 +/- 3, P = 21 +/- 3 kJ), or fatigue index (B = 39 +/- 8, D = 45 +/- 5, P = 43 +/- 5%). There were no significant differences in HR at 40% power (D = 138 +/- 10, P = 137 +/- 10 beats.min-1) or 60% power (D = 161 +/- 11, P = 160 +/- 11 beats x min(-1). There were no significant differences in cycling efficiency at 40% power (D = 18.8 +/- 1.8, P = 18.5 +/- 1.8%) or 60% power (D = 20.3 +/- 2.0, P = 20.1 +/- 2.1%). CONCLUSION: A therapeutic dose of pseudoephedrine hydrochloride does not affect anaerobic cycling performance or aerobic cycling efficiency. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/12900684/Effects_of_pseudoephedrine_on_maximal_cycling_power_and_submaximal_cycling_efficiency_ L2 - http://Insights.ovid.com/pubmed?pmid=12900684 DB - PRIME DP - Unbound Medicine ER -