scholarly journals Brain mapping after prolonged cycling and during recovery in the heat

2013 ◽  
Vol 115 (9) ◽  
pp. 1324-1331 ◽  
Author(s):  
Kevin De Pauw ◽  
Bart Roelands ◽  
Uroš Marušič ◽  
Helio Fernandez Tellez ◽  
Kristel Knaepen ◽  
...  
Keyword(s):  
Cold Water ◽  
Water Immersion ◽  
Time Trial ◽  
Insular Cortex ◽  
Cycling Performance ◽  
Cold Water Immersion ◽  
Active Recovery ◽  
Somatosensory Information ◽  
Postexercise Recovery ◽  
Simulated Time

The aim of this study was to determine the effect of prolonged intensive cycling and postexercise recovery in the heat on brain sources of altered brain oscillations. After a max test and familiarization trial, nine trained male subjects (23 ± 3 yr; maximal oxygen uptake = 62.1 ± 5.3 ml·min−1·kg−1) performed three experimental trials in the heat (30°C; relative humidity 43.7 ± 5.6%). Each trial consisted of two exercise tasks separated by 1 h. The first was a 60-min constant-load trial, followed by a 30-min simulated time trial (TT1). The second comprised a 12-min simulated time trial (TT2). After TT1, active recovery (AR), passive rest (PR), or cold water immersion (CWI) was applied for 15 min. Electroencephalography was measured at baseline and during postexercise recovery. Standardized low-resolution brain electromagnetic tomography was applied to accurately pinpoint and localize altered electrical neuronal activity. After CWI, PR and AR subjects completed TT2 in 761 ± 42, 791 ± 76, and 794 ± 62 s, respectively. A prolonged intensive cycling performance in the heat decreased β activity across the whole brain. Postexercise AR and PR elicited no significant electrocortical differences, whereas CWI induced significantly increased β3 activity in Brodmann areas (BA) 13 (posterior margin of insular cortex) and BA 40 (supramarginal gyrus). Self-paced prolonged exercise in the heat seems to decrease β activity, hence representing decreased arousal. Postexercise CWI increased β3 activity at BA 13 and 40, brain areas involved in somatosensory information processing.

Effect of Recovery Interventions on Cycling Performance and Pacing Strategy in the Heat

2014 ◽  
Vol 9 (2) ◽  
pp. 240-248 ◽  
Author(s):  
Kevin De Pauw ◽  
Bart Roelands ◽  
Jef Vanparijs ◽  
Romain Meeusen
Keyword(s):  
Power Output ◽  
Cold Water ◽  
Water Immersion ◽  
Thermal Strain ◽  
Time Trial ◽  
Cycling Performance ◽  
Cold Water Immersion ◽  
Active Recovery ◽  
Maximal Power Output ◽  
Pacing Strategy

Purpose:To determine the effect of active recovery (AR), passive rest (PR), and cold-water immersion (CWI) after 90 min of intensive cycling on a subsequent 12-min time trial (TT2) and the applied pacing strategy in TT2.Methods:After a maximal test and familiarization trial, 9 trained male subjects (age 22 ± 3 y, VO2max 62.1 ± 5.3 mL · min−1 · kg−1) performed 3 experimental trials in the heat (30°C). Each trial consisted of 2 exercise tasks separated by 1 h. The first was a 60-min constant-load trial at 55% of the maximal power output followed by a 30-min time trial (TT1). The second comprised a 12-min simulated time trial (TT2). After TT1, AR, PR, or CWI was applied for 15 min.Results:No significant TT2 performance differences were observed, but a 1-sample t test (within each condition) revealed different pacing strategies during TT2. CWI resulted in an even pacing strategy, while AR and PR resulted in a gradual decline of power output after the onset of TT2 (P ≤ .046). During recovery, AR and CWI showed a trend toward faster blood lactate ([BLa]) removal, but during TT2 significantly higher [BLa] was only observed after CWI compared with PR (P = .011).Conclusion:The pacing strategy during subsequent cycling performance in the heat is influenced by the application of different postexercise recovery interventions. Although power was not significantly altered between groups, CWI enabled a differently shaped power profile, likely due to decreased thermal strain.

scholarly journals Effects of cold water immersion and active recovery on hemodynamics and recovery of muscle strength following resistance exercise

2015 ◽  
Vol 309 (4) ◽  
pp. R389-R398 ◽  
Author(s):  
Llion A. Roberts ◽  
Makii Muthalib ◽  
Jamie Stanley ◽  
Glen Lichtwark ◽  
Kazunori Nosaka ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Cold Water ◽  
Water Immersion ◽  
Cold Water Immersion ◽  
Isometric Strength ◽  
Muscle Temperature ◽  
Active Recovery ◽  
Recovery Strategies ◽  
Postexercise Recovery ◽  
Voluntary Contractions

Cold water immersion (CWI) and active recovery (ACT) are frequently used as postexercise recovery strategies. However, the physiological effects of CWI and ACT after resistance exercise are not well characterized. We examined the effects of CWI and ACT on cardiac output (Q̇), muscle oxygenation (SmO2), blood volume (tHb), muscle temperature (Tmuscle), and isometric strength after resistance exercise. On separate days, 10 men performed resistance exercise, followed by 10 min CWI at 10°C or 10 min ACT (low-intensity cycling). Q̇ (7.9 ± 2.7 l) and Tmuscle (2.2 ± 0.8°C) increased, whereas SmO2 (−21.5 ± 8.8%) and tHb (−10.1 ± 7.7 μM) decreased after exercise ( P < 0.05). During CWI, Q̇ (−1.1 ± 0.7 l) and Tmuscle (−6.6 ± 5.3°C) decreased, while tHb (121 ± 77 μM) increased ( P < 0.05). In the hour after CWI, Q̇ and Tmuscle remained low, while tHb also decreased ( P < 0.05). By contrast, during ACT, Q̇ (3.9 ± 2.3 l), Tmuscle (2.2 ± 0.5°C), SmO2 (17.1 ± 5.7%), and tHb (91 ± 66 μM) all increased ( P < 0.05). In the hour after ACT, Tmuscle, and tHb remained high ( P < 0.05). Peak isometric strength during 10-s maximum voluntary contractions (MVCs) did not change significantly after CWI, whereas it decreased after ACT (−30 to −45 Nm; P < 0.05). Muscle deoxygenation time during MVCs increased after ACT ( P < 0.05), but not after CWI. Muscle reoxygenation time after MVCs tended to increase after CWI ( P = 0.052). These findings suggest first that hemodynamics and muscle temperature after resistance exercise are dependent on ambient temperature and metabolic demands with skeletal muscle, and second, that recovery of strength after resistance exercise is independent of changes in hemodynamics and muscle temperature.

scholarly journals Acute Post-Exercise Recovery Strategies in Cycling: A Review

2018 ◽  
Vol 7 (3) ◽  
pp. 11-44
Author(s):  
Ryan Overmayer ◽  
Francisco Tavares ◽  
Matthew William Driller
Keyword(s):  
Power Output ◽  
Cold Water ◽  
Water Immersion ◽  
Time Trial ◽  
Cold Water Immersion ◽  
Total Work ◽  
Active Recovery ◽  
Post Exercise ◽  
Time To Completion ◽  
Recovery Strategies

Cycling events often include multiple races a day or racing over consecutive days. Congested competition schedules and increased training load have led to the implementation of recovery strategies; with the goal of alleviating post-exercise fatigue and enhancing subsequent performance. This review aims to review the efficacy of recovery strategies used following different cycling events. Compression garments have been shown to improve subsequent 30s – 30min mean cycling power and 5-min max cycling power, while cold water immersion may improve 5-15s sprint cycling power output, 1-15min time trial (TT) total work performed and mean power output in hot and humid conditions. Cold water immersion was also more beneficial than active recovery at improving total work performed. Contrast water therapy could increase 15s – 15min TT work performed and sprint mean and peak power output. Similarly, active recovery has been shown to improve power measures and time to completion. Conversely, hot water immersion appears to be detrimental to sprint power output and TT power output over consecutive days. Thermoneutral water immersion appears beneficial for improving average cycling speed and time to completion during a 20-km TT, where humidification therapy and sports massage are beneficial at improving sprint and middle duration time trial performance. A combination of recovery strategies appear more beneficial than stand-alone strategies and various combinations should be explored further.

scholarly journals The Effects of Cold Water Immersion and Active Recovery on Molecular Factors That Regulate Growth and Remodeling of Skeletal Muscle After Resistance Exercise

2020 ◽  
Vol 11 ◽  
Author(s):  
Jonathan M. Peake ◽  
James F. Markworth ◽  
Kristoffer Toldnes Cumming ◽  
Sigve N. Aas ◽  
Llion A. Roberts ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Resistance Exercise ◽  
Cold Water ◽  
Water Immersion ◽  
Cold Water Immersion ◽  
Active Recovery ◽  
Growth And Remodeling

scholarly journals Photobiomodulation by Led Does Not Alter Muscle Recovery Indicators and Presents Similar Outcomes to Cold-Water Immersion and Active Recovery

2019 ◽  
Vol 9 ◽  
Author(s):  
Elvis de Souza Malta ◽  
Fabio Santos de Lira ◽  
Fabiana Andrade Machado ◽  
Anderson Saranz Zago ◽  
Sandra Lia do Amaral ◽  
...  
Keyword(s):  
Cold Water ◽  
Water Immersion ◽  
Cold Water Immersion ◽  
Active Recovery ◽  
Muscle Recovery

scholarly journals Divergent effects of cold water immersion versus active recovery on skeletal muscle fiber type and angiogenesis in young men

2018 ◽  
Vol 314 (6) ◽  
pp. R824-R833 ◽  
Author(s):  
Randall F. D’Souza ◽  
Nina Zeng ◽  
James F. Markworth ◽  
Vandre C. Figueiredo ◽  
Llion A. Roberts ◽  
...  
Keyword(s):  
Myosin Heavy Chain ◽  
Muscle Fiber ◽  
Heavy Chain ◽  
Cold Water ◽  
Fiber Type ◽  
Water Immersion ◽  
Group Versus ◽  
Cold Water Immersion ◽  
Muscle Fiber Type ◽  
Active Recovery

Resistance training (RT) increases muscle fiber size and induces angiogenesis to maintain capillary density. Cold water immersion (CWI), a common postexercise recovery modality, may improve acute recovery, but it attenuates muscle hypertrophy compared with active recovery (ACT). It is unknown if CWI following RT alters muscle fiber type expression or angiogenesis. Twenty-one men strength trained for 12 wk, with either 10 min of CWI ( n = 11) or ACT ( n = 10) performed following each session. Vastus lateralis biopsies were collected at rest before and after training. Type IIx myofiber percent decreased ( P = 0.013) and type IIa myofiber percent increased with training ( P = 0.012), with no difference between groups. The number of capillaries per fiber increased from pretraining in the CWI group ( P = 0.004) but not the ACT group ( P = 0.955). Expression of myosin heavy chain genes ( MYH1 and MYH2), encoding type IIx and IIa fibers, respectively, decreased in the ACT group, whereas MYH7 (encoding type I fibers) increased in the ACT group versus CWI ( P = 0.004). Myosin heavy chain IIa protein increased with training ( P = 0.012) with no difference between groups. The proangiogenic vascular endothelial growth factor protein decreased posttraining in the ACT group versus CWI ( P < 0.001), whereas antiangiogenic Sprouty-related, EVH1 domain-containing protein 1 protein increased with training in both groups ( P = 0.015). Expression of microRNAs that regulate muscle fiber type (miR-208b and -499a) and angiogenesis (miR-15a, -16, and -126) increased only in the ACT group ( P < 0.05). CWI recovery after each training session altered the angiogenic and fiber type-specific response to RT through regulation at the levels of microRNA, gene, and protein expression.

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