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Pre-exercise carbohydrate status influences carbohydrate-mediated attenuation of post-exercise cytokine responses.
Int J Sports Med. 2008 Dec; 29(12):1003-9.IJ

Abstract

Most studies investigating the effects of acute carbohydrate (CHO) ingestion on post-exercise cytokine responses have involved fasted athletes. This study characterised the effects of acute CHO beverage ingestion preceded by consumption of a CHO-containing pre-exercise meal. Sixteen highly-trained male cyclists/triathletes (age: 30.6 +/- 5.6 y; V O (2max): 64.8 +/- 4.7 ml . kg . min (-1) [mean +/- SD]) undertook two cycle ergometry trials involving randomised consumption of a 10 % CHO beverage (15 mL . kg (-1) . hr (-1)) or water (H (2)O). Trials were undertaken 2 h after a breakfast providing 2.1 g CHO . kg (-1) body mass (BM) (48 kJ . kg (-1) BM) and consisted of 100 min steady state cycle ergometry at 70 % V O (2max) followed by a time trial of approximately 30 min duration. Blood samples were collected pre-, post- and 1 h post-exercise for measurement of Interleukin (IL)-6, IL-8, IL-10 and IL-1ra. Time-trial performance was not substantially different between CHO and H (2)O trials (4.5 %, p = 0.42). Neither IL-6 nor IL-8 responses were substantially reduced in the CHO compared to the H (2)O trial. There was a substantial reduction in IL-10 (32 %, p = 0.05) and IL-1ra (43 %, p = 0.02) responses at 1 h post-exercise with CHO compared to H (2)O ingestion. In conclusion, the previously shown attenuating effects of CHO ingestion during exercise on cytokine responses appear reduced when athletes consume a CHO-containing pre-exercise meal.

Authors+Show Affiliations

Department of Physiology, Australian Institute of Sport, Belconnen, Australia. amanda.cox@newcastle.edu.auNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18615388

Citation

Cox, A J., et al. "Pre-exercise Carbohydrate Status Influences Carbohydrate-mediated Attenuation of Post-exercise Cytokine Responses." International Journal of Sports Medicine, vol. 29, no. 12, 2008, pp. 1003-9.
Cox AJ, Pyne DB, Cox GR, et al. Pre-exercise carbohydrate status influences carbohydrate-mediated attenuation of post-exercise cytokine responses. Int J Sports Med. 2008;29(12):1003-9.
Cox, A. J., Pyne, D. B., Cox, G. R., Callister, R., & Gleeson, M. (2008). Pre-exercise carbohydrate status influences carbohydrate-mediated attenuation of post-exercise cytokine responses. International Journal of Sports Medicine, 29(12), 1003-9. https://doi.org/10.1055/s-2008-1038753
Cox AJ, et al. Pre-exercise Carbohydrate Status Influences Carbohydrate-mediated Attenuation of Post-exercise Cytokine Responses. Int J Sports Med. 2008;29(12):1003-9. PubMed PMID: 18615388.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pre-exercise carbohydrate status influences carbohydrate-mediated attenuation of post-exercise cytokine responses. AU - Cox,A J, AU - Pyne,D B, AU - Cox,G R, AU - Callister,R, AU - Gleeson,M, Y1 - 2008/07/09/ PY - 2008/7/11/pubmed PY - 2009/3/5/medline PY - 2008/7/11/entrez SP - 1003 EP - 9 JF - International journal of sports medicine JO - Int J Sports Med VL - 29 IS - 12 N2 - Most studies investigating the effects of acute carbohydrate (CHO) ingestion on post-exercise cytokine responses have involved fasted athletes. This study characterised the effects of acute CHO beverage ingestion preceded by consumption of a CHO-containing pre-exercise meal. Sixteen highly-trained male cyclists/triathletes (age: 30.6 +/- 5.6 y; V O (2max): 64.8 +/- 4.7 ml . kg . min (-1) [mean +/- SD]) undertook two cycle ergometry trials involving randomised consumption of a 10 % CHO beverage (15 mL . kg (-1) . hr (-1)) or water (H (2)O). Trials were undertaken 2 h after a breakfast providing 2.1 g CHO . kg (-1) body mass (BM) (48 kJ . kg (-1) BM) and consisted of 100 min steady state cycle ergometry at 70 % V O (2max) followed by a time trial of approximately 30 min duration. Blood samples were collected pre-, post- and 1 h post-exercise for measurement of Interleukin (IL)-6, IL-8, IL-10 and IL-1ra. Time-trial performance was not substantially different between CHO and H (2)O trials (4.5 %, p = 0.42). Neither IL-6 nor IL-8 responses were substantially reduced in the CHO compared to the H (2)O trial. There was a substantial reduction in IL-10 (32 %, p = 0.05) and IL-1ra (43 %, p = 0.02) responses at 1 h post-exercise with CHO compared to H (2)O ingestion. In conclusion, the previously shown attenuating effects of CHO ingestion during exercise on cytokine responses appear reduced when athletes consume a CHO-containing pre-exercise meal. SN - 0172-4622 UR - https://www.unboundmedicine.com/medline/citation/18615388/Pre_exercise_carbohydrate_status_influences_carbohydrate_mediated_attenuation_of_post_exercise_cytokine_responses_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2008-1038753 DB - PRIME DP - Unbound Medicine ER -