McGowan, C and Rattray, B and Pyne, D and Thompson, K and Raglin, J, Use of additional warm-up strategies in the pre-race transition period enhances sprint swimming performance, The 8th International Symposium on Biomechanics and Medicine in Swimming, 28 April - 2 May, Canberra, Australia (2014) [Conference Extract]
Introduction: Active warm-up has been reported to elevate body temperature1 and increase muscle contractile performance2, both of which are considered crucial for optimal performance. Although several studies have examined the impact of pre-competition warm-up strategies in swimming, new strategies such as passive heating and dryland-based exercise circuits have emerged. The objective of the present study was to determine the impact of a standardised pool warm-up in combination with various additional warm-up strategies on sprint swimming performance.
Method: On four separate occasions, sixteen national age-group (11 male, 5 female, aged 13–19 y) swimmers completed a standardised, 25 min pool-based warm-up, followed by a simulated 30 min pre-race transition period (which included a 15 min simulated marshalling period) before completing a 100 m freestyle time-trial. During the pre-race transition period, swimmers wore standard tracksuit pants and completed, in random order the following additional warm-ups (i) standard tracksuit top (CON), (ii) insulated tracksuit top with integrated heating elements (PAS), (iii) standard tracksuit top and completed a 4 min dryland-based exercise circuit (DRY), or (iv) a combination of PAS and DRY (COMBO). Overall performance times, core temperature (Tc) and blood lactate concentration were monitored throughout each trial.
Results: Overall performance times were normalised against best effort time and transformed into percentages prior to analysis. Mean performance times for DRY (p = 0.02; x¯ = 100.97%) and COMBO (p = 0.00; x¯ = 100.31%) were significantly faster than CON (x¯ = 102.09%). Mean Tc declined significantly less in the pre-race transition period in the COMBO (p = 0.015; x¯ = 0.13°C) versus CON (x¯ = 0.64°C) condition and marginally less in DRY (p = 0.076; x¯ = 0.24°C). Mean post time-trial lactate concentrations were not significantly different between conditions.
Conclusions: The use of additional warm-up strategies incorporating dryland-based exercise routines alone or in combination with electrically heated tracksuit tops, in the pre-race transition period can attenuate the decline in Tc and significantly improve sprint swimming performance.
|Item Type:||Conference Extract|
|Keywords:||core temperature, passive heating, swim performance, transition phase, heated jackets, freestyle|
|Research Division:||Health Sciences|
|Research Group:||Sports science and exercise|
|Research Field:||Sports science and exercise not elsewhere classified|
|Objective Division:||Culture and Society|
|Objective Group:||Sport, exercise and recreation|
|Objective Field:||Organised sports|
|UTAS Author:||McGowan, C (Dr Courtney McGowan)|
|Deposited By:||Health Sciences|
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