Effect of stride length on symptoms of exercise-induced muscle damage during a repeated bout of downhill running

2000 ◽  
Vol 10 (4) ◽  
pp. 199-204 ◽  
Author(s):  
R. G. Eston ◽  
A. B. Lemmey ◽  
P. McHugh ◽  
C. Byrne ◽  
S. E. Walsh
Keyword(s):  
Muscle Damage ◽  
Stride Length ◽  
Downhill Running ◽  
Exercise Induced ◽  
Repeated Bout

scholarly journals Repeated Bout Effect Was More Expressed in Young Adult Males Than in Elderly Males and Boys

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Giedrius Gorianovas ◽  
Albertas Skurvydas ◽  
Vytautas Streckis ◽  
Marius Brazaitis ◽  
Sigitas Kamandulis ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Repeated Bout Effect ◽  
Adult Males ◽  
Elderly Males ◽  
Dependent Variables ◽  
Drop Jumps ◽  
Exercise Induced ◽  
Repeated Bout

This study investigated possible differences using the same stretch-shortening exercise (SSE) protocol on generally accepted monitoring markers (dependent variables: changes in creatine kinase, muscle soreness, and voluntary and electrically evoked torque) in males across three lifespan stages (childhood versus adulthood versus old age). The protocol consisted of 100 intermittent (30 s interval between jumps) drop jumps to determine the repeated bout effect (RBE) (first and second bouts performed at a 2-week interval). The results showed that indirect symptoms of exercise-induced muscle damage after SSE were more expressed in adult males than in boys and elderly males, suggesting that the muscles of boys and elderly males are more resistant to exercise-induced damage than those of adult males. RBE was more pronounced in adult males than in boys and elderly males, suggesting that the muscles of boys and elderly males are less adaptive to exercise-induced muscle damage than those of adult males.

scholarly journals Isometric pre-conditioning blunts exercise-induced muscle damage but does not attenuate changes in running economy following downhill running

2018 ◽  
Vol 60 ◽  
pp. 1-9 ◽  
Author(s):  
Leonardo C.R. Lima ◽  
Natália M. Bassan ◽  
Adalgiso C. Cardozo ◽  
Mauro Gonçalves ◽  
Camila C. Greco ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Running Economy ◽  
Downhill Running ◽  
Exercise Induced

scholarly journals Exercise-Induced Muscle Damage and Running Economy in Humans

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Cláudio de Oliveira Assumpção ◽  
Leonardo Coelho Rabello Lima ◽  
Felipe Bruno Dias Oliveira ◽  
Camila Coelho Greco ◽  
Benedito Sérgio Denadai
Keyword(s):  
Muscle Damage ◽  
High Intensity ◽  
Energy Demand ◽  
Negative Impact ◽  
High Intensity Exercise ◽  
Running Economy ◽  
Running Performance ◽  
Downhill Running ◽  
Short Period ◽  
Exercise Induced

Running economy (RE), defined as the energy demand for a given velocity of submaximal running, has been identified as a critical factor of overall distance running performance. Plyometric and resistance trainings, performed during a relatively short period of time (~15–30 days), have been successfully used to improve RE in trained athletes. However, these exercise types, particularly when they are unaccustomed activities for the individuals, may cause delayed onset muscle soreness, swelling, and reduced muscle strength. Some studies have demonstrated that exercise-induced muscle damage has a negative impact on endurance running performance. Specifically, the muscular damage induced by an acute bout of downhill running has been shown to reduce RE during subsequent moderate and high-intensity exercise (>65% VO2max). However, strength exercise (i.e., jumps, isoinertial and isokinetic eccentric exercises) seems to impair RE only for subsequent high-intensity exercise (~90% VO2max). Finally, a single session of resistance exercise or downhill running (i.e., repeated bout effect) attenuates changes in indirect markers of muscle damage and blunts changes in RE.

Curcumin effects on inflammation and performance recovery following eccentric exercise-induced muscle damage

2007 ◽  
Vol 292 (6) ◽  
pp. R2168-R2173 ◽  
Author(s):  
J. Mark Davis ◽  
E. Angela Murphy ◽  
Martin D. Carmichael ◽  
Mark R. Zielinski ◽  
Claire M. Groschwitz ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Muscle Damage ◽  
Inflammatory Cytokines ◽  
Eccentric Exercise ◽  
Activity Wheel ◽  
Voluntary Activity ◽  
Running Performance ◽  
Functional Deficits ◽  
Downhill Running ◽  
Exercise Induced

Downhill running is associated with fiber damage, inflammation, delayed-onset muscle soreness, and various functional deficits. Curcumin, a constituent of the Indian spice turmeric has been investigated for its anti-inflammatory activity and may offset some of the damage and functional deficits associated with downhill running. This study examined the effects of curcumin on inflammation and recovery of running performance following downhill running in mice. Male mice were assigned to downhill placebo (Down-Plac), downhill curcumin (Down-Cur), uphill placebo (Up-Plac), or uphill curcumin (Up-Cur) groups and run on a treadmill at 22 m/min at −14% or +14% grade, for 150 min. At 48 h or 72 h after the up/downhill run, mice ( experiment 1) underwent a treadmill performance run to fatigue. Another subset of mice was placed in voluntary activity wheel cages following the up/downhill run ( experiment 2) and their voluntary activity (distance, time and peak speed) was recorded. Additional mice ( experiment 3) were killed at 24 h and 48 h following the up/downhill run, and the soleus muscle was harvested for analysis of inflammatory cytokines (IL-1β, IL-6, and TNF-α), and plasma was collected for creatine kinase analysis. Downhill running decreased both treadmill run time to fatigue (48 h and 72 h) and voluntary activity (24 h) ( P < 0.05), and curcumin feedings offset these effects on running performance. Downhill running was also associated with an increase in inflammatory cytokines (24 h and 48 h) and creatine kinase (24 h) ( P < 0.05) that were blunted by curcumin feedings. These results support the hypothesis that curcumin can reduce inflammation and offset some of the performance deficits associated with eccentric exercise-induced muscle damage.

scholarly journals Consumption of An Anthocyanin-Rich Antioxidant Juice Accelerates Recovery of Running Economy and Indirect Markers of Exercise-Induced Muscle Damage Following Downhill Running

Nutrients ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2274 ◽  
Author(s):  
Leonardo C. R. Lima ◽  
Renan V. Barreto ◽  
Natália M. Bassan ◽  
Camila C. Greco ◽  
Benedito S. Denadai
Keyword(s):  
Oxygen Uptake ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Kinase Activity ◽  
Peak Torque ◽  
Creatine Kinase Activity ◽  
Running Economy ◽  
Perceived Effort ◽  
Downhill Running ◽  
Exercise Induced

This study examined the effects of anthocyanin-rich antioxidant juice (AJ) on the recovery of exercise-induced muscle damage (EIMD) and the running economy (RE) following downhill running (DHR). Thirty healthy young men were randomly divided into two blinded groups and consumed either AJ or placebo (PLA) for nine days (240 mL twice-a-day). On day 5, the participants from both groups ran downhill (−15%) for 30 min at 70% of their maximal oxygen uptake (VO2max) speeds. The changes in RE (oxygen uptake (VO2) and perceived effort (PE) during 5-min runs at 80%VO2max) and EIMD (isometric peak torque (IPT), muscle soreness (SOR) and serum creatine kinase activity (CK)) were compared over time and between the groups on the 4 days following DHR. VO2 and PE increased (p < 0.05) immediately following DHR for both groups and remained elevated for PLA until 48h post-DHR while fully recovering 24 h post-DHR for AJ. SOR was greater (p < 0.05) for PLA throughout the study. CK increased for both groups and was greater (p < 0.05) for PLA at 96 h post-DHR. IPT decreased for both groups but recovered faster for AJ (72 h) compared to PLA (no full recovery). AJ accelerated recovery of RE and EIMD and should be used in specific contexts, but not chronically.

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