Precooling and Running Economy

Winke, Molly; Yates, Judith M.

doi:10.1249/01.mss.0000321735.21347.7d

Cited by 1 publication

(1 citation statement)

References 51 publications

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“…RE incorporates both biomechanical as well as physiological parameters and is thought to account for differences between elite athletes who display similar VO 2max values (Bassett & Howley, 2000). Despite indications that precooling may benefit some determinants of RE such as oxygen uptake (Lee & Haymes, 1995), stride length (Folland et al, 2006), and neuromuscular function (Siegel et al, 2011), no differences were found, supporting the results of Winke and Yates (2008) who examined RE following ice slurry precooling. Thus, beneficial effects of precooling do not appear to present through improved RE while exercising for relatively short durations in the heat.…”

Section: Effects Of Coolingmentioning

confidence: 81%

Physiological responses to incremental exercise in the heat following internal and external precooling

James

Richardson

Watt

et al. 2015

Scandinavian Med Sci Sports

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Twelve males completed three incremental, discontinuous treadmill tests in the heat [31.9(1.0)°C, 61.9(8.9)%] to determine speed at two fixed blood lactate concentrations (2 and 3.5 mmol/L), running economy (RE), and maximum oxygen uptake ( VO 2max ). Trials involved 20 min of either internal cooling (ICE, 7.5 g/kg ice slurry ingestion) or mixed-methods external cooling (EXT, cold towels, forearm immersion, ice vest, and cooling shorts), alongside no intervention (CON). Endurance exercise is underpinned by the ability to transfer chemical energy into a given exercise velocity (Coyle, 1999). The status of this biological process can be assessed using physiological markers such as the lactate thresholds, running economy (RE), and maximum oxygen uptake ( VO 2max ). Under normothermic conditions, when combined with the peak treadmill velocity, these markers have been shown to account for 97.8% of the variation in 16 km run time (McLaughlin et al., 2010). McLaughlin et al. (2010) highlighted that VO 2max accounted for 90.2% of variation in running time in a group with heterogenous VO 2max values. Furthermore, Lorenzo et al. (2011) has shown the lactate turnpoint (LTP) to be a strong predictor of time trial performance in both cold (r = 0.89) and hot (r = 0.87) environments.

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