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Neutralisation of muscle tumour necrosis factor alpha does not attenuate exercise-induced muscle pain but does improve muscle strength in healthy male volunteers.
Br J Sports Med. 2008 Sep; 42(9):758-62.BJ

Abstract

OBJECTIVE

Inflammatory mediators, such as tumour necrosis factor alpha (TNFalpha), may contribute to delayed-onset muscle soreness. The effect of neutralising TNFalpha with etanercept, a soluble TNFalpha receptor, on delayed-onset muscle soreness (DOMS) induced in the quadriceps muscle was analysed.

DESIGN

On two separate occasions at least 6 weeks apart, etanercept 25 mg or vehicle was given subcutaneously 1 hour before unaccustomed exercise to 12 healthy men in a randomised double-blind cross-over format. To induce DOMS, subjects completed 4 sets of 15 repetitions at 80% of their one-repetition maximum (1RM), using a 45 degrees inclined leg press. Muscle soreness was assessed using a 100-mm visual analogue scale (VAS), and pressure pain threshold (PPT) on the thigh before and 24, 48 and 72 hours after exercise. Changes in the subject's muscle strength were detected by reassessing the subject's 1RM 24, 48 and 72 hours after exercise.

RESULTS

Muscle strength decreased 24 and 48 hours after exercise regardless of agent administered (analysis of variance, p<0.001). At 72 hours after exercise, muscle strength was significantly greater (p<0.01) after etanercept than after placebo. The exercise protocol induced significant DOMS for up to 72 hours, as reflected by reduced PPT and increased VAS scores (p<0.001). Etanercept had no effect on PPT or VAS.

CONCLUSION

TNFalpha does not affect muscle soreness associated with unaccustomed exercise, but may improve the recovery of muscle function.

Authors+Show Affiliations

Brain Function Research Unit, School of Physiology, University of the Witwatersrand, Johannesburg, South Africa.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17717057

Citation

Rice, T L., et al. "Neutralisation of Muscle Tumour Necrosis Factor Alpha Does Not Attenuate Exercise-induced Muscle Pain but Does Improve Muscle Strength in Healthy Male Volunteers." British Journal of Sports Medicine, vol. 42, no. 9, 2008, pp. 758-62.
Rice TL, Chantler I, Loram LC. Neutralisation of muscle tumour necrosis factor alpha does not attenuate exercise-induced muscle pain but does improve muscle strength in healthy male volunteers. Br J Sports Med. 2008;42(9):758-62.
Rice, T. L., Chantler, I., & Loram, L. C. (2008). Neutralisation of muscle tumour necrosis factor alpha does not attenuate exercise-induced muscle pain but does improve muscle strength in healthy male volunteers. British Journal of Sports Medicine, 42(9), 758-62.
Rice TL, Chantler I, Loram LC. Neutralisation of Muscle Tumour Necrosis Factor Alpha Does Not Attenuate Exercise-induced Muscle Pain but Does Improve Muscle Strength in Healthy Male Volunteers. Br J Sports Med. 2008;42(9):758-62. PubMed PMID: 17717057.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Neutralisation of muscle tumour necrosis factor alpha does not attenuate exercise-induced muscle pain but does improve muscle strength in healthy male volunteers. AU - Rice,T L, AU - Chantler,I, AU - Loram,L C, Y1 - 2007/08/23/ PY - 2007/8/25/pubmed PY - 2008/11/19/medline PY - 2007/8/25/entrez SP - 758 EP - 62 JF - British journal of sports medicine JO - Br J Sports Med VL - 42 IS - 9 N2 - OBJECTIVE: Inflammatory mediators, such as tumour necrosis factor alpha (TNFalpha), may contribute to delayed-onset muscle soreness. The effect of neutralising TNFalpha with etanercept, a soluble TNFalpha receptor, on delayed-onset muscle soreness (DOMS) induced in the quadriceps muscle was analysed. DESIGN: On two separate occasions at least 6 weeks apart, etanercept 25 mg or vehicle was given subcutaneously 1 hour before unaccustomed exercise to 12 healthy men in a randomised double-blind cross-over format. To induce DOMS, subjects completed 4 sets of 15 repetitions at 80% of their one-repetition maximum (1RM), using a 45 degrees inclined leg press. Muscle soreness was assessed using a 100-mm visual analogue scale (VAS), and pressure pain threshold (PPT) on the thigh before and 24, 48 and 72 hours after exercise. Changes in the subject's muscle strength were detected by reassessing the subject's 1RM 24, 48 and 72 hours after exercise. RESULTS: Muscle strength decreased 24 and 48 hours after exercise regardless of agent administered (analysis of variance, p<0.001). At 72 hours after exercise, muscle strength was significantly greater (p<0.01) after etanercept than after placebo. The exercise protocol induced significant DOMS for up to 72 hours, as reflected by reduced PPT and increased VAS scores (p<0.001). Etanercept had no effect on PPT or VAS. CONCLUSION: TNFalpha does not affect muscle soreness associated with unaccustomed exercise, but may improve the recovery of muscle function. SN - 1473-0480 UR - https://wwww.unboundmedicine.com/medline/citation/17717057/Neutralisation_of_muscle_tumour_necrosis_factor_alpha_does_not_attenuate_exercise_induced_muscle_pain_but_does_improve_muscle_strength_in_healthy_male_volunteers_ L2 - https://bjsm.bmj.com/lookup/pmidlookup?view=long&amp;pmid=17717057 DB - PRIME DP - Unbound Medicine ER -