This study investigated the relationship between muscle function decrease at immediately post-exercise and DOMS at 24h after eccentric cycling..

Koeda, T.

Mavropalias, G.

Nosaka, K.

English

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Delayed Onset Muscle Soreness At One Day After One-leg Eccentric Cycling In Relation To Decreases In Muscle Function Immediately Post-exerciseTomoko Koeda1,2, Georgios Mavropalias1, Kazunori Nosaka11: School of  Medical and Health Sciences, Edith Cowan University 2: Faculty of  Rehabilitation Sciences, Nagoya Gakuin UniversityIntroductionDelayed onset muscle soreness (DOMS) is induced after performingunaccustomed eccentric exercise, but its magnitude is not necessarily associatedwith the decrease in muscle function immediately post-exercise for the elbowflexors (Nosaka et al. 2006). No previous study has investigated thoseassociations in the knee extensors after eccentric cycling.This study investigated the relationship between muscle function decrease atimmediately post-exercise and DOMS at 24 h after eccentric cycling.MethodsEight men and five women (18-47 y) performed 10 revolutions of 1-min (50 rpm)right-legged eccentric cycling at 80% of their concentric cycling peak torque with a1-min rest between sets (Fig. 1).Maximum knee extension and flexion torque at 70º (MVIC70) and 20º (MVIC20),and maximum isokinetic knee extension and flexion torque at 90°/s (MVCON)were measured before and immediately-post exercise (Fig. 2).Muscle soreness was assessed by a 100-mm visual analog scale (VAS) uponpalpation and pressure pain threshold (PPT) for vastus lateralis (VL), rectusfemoris (RF) and vastus medialis (VM) before and 24 h post-exercise (Fig. 3).The study was approved by the local institutional ethics committee, and informedconsent was obtained from all participants.ResultsNo significant changes in knee flexion torque were found, but MVIC70°, MVIC20°and MVCON of the knee extensors decreased 25.1 ± 15.8% (range: 6.5-54.1%),30.3 ± 18.0% (3.6-62.4%) and 21.4 ± 15.6% (6.1-56.3%), respectively atimmediately post-exercise (Table 1), and those torques were still lower than thebaseline at 48 hours after eccentric cycling.At 24 h post-exercise, VAS ranged 0-100 mm for VL (52.8 ± 29.3 mm), RF (47.2± 31.6 mm) and VM (48.8 ± 33.5 mm), and PPT decreased 22.3 ± 22.2 (0-59)%for VL, 12.6 ± 22.8 (0-54)% for RF and 20.0 ± 25.9 (0-48)% for VM (Table 1).The magnitude of changes in MVIC70° and MVIC20° from the baseline atimmediately after eccentric cycling significantly (p<0.05) related to the VAS (Fig. 4,r=0.69-0.79) and PPT (Fig. 5, r=0.58-0.76) at 24 hours after eccentric cycling.Spearman’s rank correlation coefficient showed a significant (p<0.05) correlationbetween MVIC (20°, 70°) and VAS (r=0.60-0.83) as well as PPT (r=0.60-0.88) forall muscles, and MVCON and VAS for RF (Table 2, Fig. 6).ConclusionThese results suggest that the greater the magnitude of strength loss immediately after eccentric cycling, the greater the DOMS one day later. The extent of DOMS at 24 hours post-exercise can be predicted from the magnitude of decrease in the muscular strength immediately after eccentric cycling.Fig. 1: One-leg eccentric cyclingFig. 2: Muscle strength tests on a Biodex dynamometerFig. 3: Muscle soreness assessment using a visual analog scale (A, VAS) and a pressure pain threshold (B, PPT)Table 2. The correlation coefficients in each factorFig. 4: Correlations between the VAS of VL at 24 hours after eccentric cycling and the magnitude of changes in maximal voluntary isometric contraction strength of the knee extensors at 70° (A) and 20° knee flexion (B) from the baseline at immediately after eccentric cycling.Fig. 5: Correlations between percent changes in PPT of VL at 24 hours after eccentric cycling from the baseline and the magnitude of changes in maximal voluntary isometric contraction strength of the knee extensors at 70 ° (A) and 20 ° (B) from the baseline at immediately after eccentric cycling.Fig. 6: Relationship between the VAS (A) or PPT (B) of VL at 24 hours after eccentric cycling and the magnitude of change in maximal voluntary isometric contraction strength of the knee extensors at 20º knee flexion (MVIC20) among the participants (1-13). The participants are put in the order of the magnitude of decrease in MVIC20.-70-60-50-40-30-20-1000204060801001 2 3 4 5 6 7 8 9 10 11 12 13Change in MVIC20 (%)VAS of VL (mm)A)-70-60-50-40-30-20-1001 2 3 4 5 6 7 8 9 10 11 12 13-60-50-40-30-20-100Changes in PPT of VL (%)Changes in MVIC20 (%)B)Range Mean ± SDChange in MVIC at 70º (%) 6.5 ~ 54.1 25.1 ± 15.8Change in MVIC at 20º (%) 3.6 ~ 62.4 30.3 ± 18.0Change in MVCON (%) 6.1 ~ 56.3 21.4 ± 15.6VAS for VL at 24 hours after eccentric cycling (mm) 0 ~ 100 52.8 ± 29.3VAS for RF at 24 hours after eccentric cycling (mm) 0 ~ 100 47.2 ± 31.6VAS for VM at 24 hours after eccentric cycling (mm) 1 ~ 100 48.8 ± 33.5Change in PPT of VL at 24 hours after eccentric cycling (%) 0 ~ 59.1 22.3 ± 22.2Change in PPT of RF at 24 hours after eccentric cycling (%) 0 ~ 53.8 12.6 ± 22.8Change in PPT of VM at 24 hours after eccentric cycling (%) 0 ~ 48.2 20.0 ± 25.9Table 1. Changes in the criterion measures (range, mean  SD, n=13) from baseline to immediately after eccentric cycling in the strength and 24 hours after eccentric cycling in VAS and PPT.MVIC: maximal voluntary isometric contraction strength, MVCON: maximal voluntary isokinetic concentric contraction strength, VAS: visual analog scale, VL: vastus lateralis, RF: rectus femoris, VM: vastus medialis, PPT: pressure pain thresholdA) B)VAS PPTVL RF VM VL RF VM70ºMVIC 0.830** 0.775** 0.604* 0.665* 0.659* 0.648*20ºMVIC 0.824** 0.725** 0.704** 0.813** 0.604* 0.883**MVCON 0.527 0.670* 0.489 0.599 0.786** 0.560MVIC: maximal voluntary isometric contraction strength, MVCON: maximal voluntary isokinetic concentric contraction strength, VAS: visual analog scale, VL: vastus lateralis, RF: rectus femoris, VM: vastus medialis, PPT: pressure pain threshold, *p<0.05, **p<0.01020406080100-70 -50 -30 -10VAS of VL (mm)Change in MVIC70 (%)A)r=-0.74020406080100-70 -50 -30 -10VAS of VL (mm)Change in MVIC20 (%)B)r=-0.73-60-40-200-70 -50 -30 -10Change in MVIC70 (%)Change in PPT (%)A)r=0.67-60-40-200-70 -50 -30 -10Change in PPT (%)Change in MVIC20 (%)B)r=0.76ReferenceK Nosaka, et al: Is isometric strength loss immediately after eccentric exercise related to changes in indirect markers of muscle damage? (2006) Appl Physiol Nutr Metab 31: 313-9The authors have no financial conflicts of interest disclose concerning the study.View publication stats

Delayed onset muscle soreness at one day after one-leg eccentric cycling in relation to decreases in muscle function immediately post-exercise

https://researchrepository.murdoch.edu.au/id/eprint/66554/1/ICSTposterKoeda4.pdf

Delayed onset muscle soreness at one day after one-leg eccentric cycling in relation to decreases in muscle function immediately post-exercise

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