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Ascorbic acid supplementation does not attenuate post-exercise muscle soreness following muscle-damaging exercise but may delay the recovery process.
Br J Nutr. 2006 May; 95(5):976-81.BJ

Abstract

Exercise involving lengthening muscle actions, such as downhill running, results in delayed onset muscle soreness (DOMS), which may be attributable to reactive oxygen species (ROS). Although exercise causes oxidative stress, any link between ROS and DOMS remains speculative. There is emerging evidence to suggest that ROS play an important physiological role, assisting in the recovery process and protecting the cell from future damage; however, this has not been fully established. Despite this uncertainty as to the precise role of ROS, attempts to prevent post-exercise ROS production through antioxidant intervention are still common. The study investigated the effects of ascorbic acid supplementation on ROS production and DOMS following downhill running. Subjects were assigned to two groups. The ascorbic acid group (group AA) received 1 g ascorbic acid 2 h pre-, and for 14 d post-downhill running, whilst the placebo group (Pl group) received a placebo. Blood samples were drawn pre-supplement, pre- and post-exercise, and then 1, 2, 3, 4, 7 and 14 d post-exercise for analysis of ascorbate, malonaldehyde and total glutathione. DOMS was assessed using a visual analogue scale and pressure algometry. Muscle function was assessed using isokinetic dynamometry. Plasma ascorbate was elevated throughout in group AA compared with the Pl group. Downhill running resulted in DOMS in both groups. Muscle function was impaired post-exercise in both groups, although a delayed recovery was noted in group AA. Malonaldehyde increased 4 d post-exercise in the Pl group only. Ascorbic acid supplementation attenuates ROS production following downhill running, without affecting DOMS. Furthermore, ascorbic acid supplementation may inhibit the recovery of muscle function.

Authors+Show Affiliations

Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK. gclose@liv.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

16611389

Citation

Close, Graeme L., et al. "Ascorbic Acid Supplementation Does Not Attenuate Post-exercise Muscle Soreness Following Muscle-damaging Exercise but May Delay the Recovery Process." The British Journal of Nutrition, vol. 95, no. 5, 2006, pp. 976-81.
Close GL, Ashton T, Cable T, et al. Ascorbic acid supplementation does not attenuate post-exercise muscle soreness following muscle-damaging exercise but may delay the recovery process. Br J Nutr. 2006;95(5):976-81.
Close, G. L., Ashton, T., Cable, T., Doran, D., Holloway, C., McArdle, F., & MacLaren, D. P. (2006). Ascorbic acid supplementation does not attenuate post-exercise muscle soreness following muscle-damaging exercise but may delay the recovery process. The British Journal of Nutrition, 95(5), 976-81.
Close GL, et al. Ascorbic Acid Supplementation Does Not Attenuate Post-exercise Muscle Soreness Following Muscle-damaging Exercise but May Delay the Recovery Process. Br J Nutr. 2006;95(5):976-81. PubMed PMID: 16611389.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ascorbic acid supplementation does not attenuate post-exercise muscle soreness following muscle-damaging exercise but may delay the recovery process. AU - Close,Graeme L, AU - Ashton,Tony, AU - Cable,Tim, AU - Doran,Dominic, AU - Holloway,Chris, AU - McArdle,Frank, AU - MacLaren,Don P M, PY - 2006/4/14/pubmed PY - 2006/6/22/medline PY - 2006/4/14/entrez SP - 976 EP - 81 JF - The British journal of nutrition JO - Br J Nutr VL - 95 IS - 5 N2 - Exercise involving lengthening muscle actions, such as downhill running, results in delayed onset muscle soreness (DOMS), which may be attributable to reactive oxygen species (ROS). Although exercise causes oxidative stress, any link between ROS and DOMS remains speculative. There is emerging evidence to suggest that ROS play an important physiological role, assisting in the recovery process and protecting the cell from future damage; however, this has not been fully established. Despite this uncertainty as to the precise role of ROS, attempts to prevent post-exercise ROS production through antioxidant intervention are still common. The study investigated the effects of ascorbic acid supplementation on ROS production and DOMS following downhill running. Subjects were assigned to two groups. The ascorbic acid group (group AA) received 1 g ascorbic acid 2 h pre-, and for 14 d post-downhill running, whilst the placebo group (Pl group) received a placebo. Blood samples were drawn pre-supplement, pre- and post-exercise, and then 1, 2, 3, 4, 7 and 14 d post-exercise for analysis of ascorbate, malonaldehyde and total glutathione. DOMS was assessed using a visual analogue scale and pressure algometry. Muscle function was assessed using isokinetic dynamometry. Plasma ascorbate was elevated throughout in group AA compared with the Pl group. Downhill running resulted in DOMS in both groups. Muscle function was impaired post-exercise in both groups, although a delayed recovery was noted in group AA. Malonaldehyde increased 4 d post-exercise in the Pl group only. Ascorbic acid supplementation attenuates ROS production following downhill running, without affecting DOMS. Furthermore, ascorbic acid supplementation may inhibit the recovery of muscle function. SN - 0007-1145 UR - https://wwww.unboundmedicine.com/medline/citation/16611389/Ascorbic_acid_supplementation_does_not_attenuate_post_exercise_muscle_soreness_following_muscle_damaging_exercise_but_may_delay_the_recovery_process_ DB - PRIME DP - Unbound Medicine ER -