TY - JOUR
T1 - Influence of post-warm-up recovery time on swim performance in international swimmers
AU - West, Dan
AU - Dietzig, Bernie
AU - Bracken, Richard
AU - Cunningham, Dan
AU - Crewther, Blair
AU - Cook, Christian
AU - Kilduff, Liam
PY - 2013/3/11
Y1 - 2013/3/11
N2 - Objectives
Swimmers must enter a marshalling call-room 20 min prior to racing, which results in some swimmers completing their warm-up 45 min pre-race. Since a recovery period longer than 15–20 min may prove problematic, this study examined 200 m freestyle performance after a 20 and 45 min post-warm-up recovery period.
Design
Eight international swimmers completed this randomised and counter-balanced study.
Methods
After a standardised warm-up, swimmers rested for either 20 (20 min) or 45 min (45 min) prior to completing a 200 m freestyle time-trial (TT). Core temperature (Tcore), blood lactate (BL), heart rate and rate of perceived exertion (RPE) were recorded at baseline, post-warm-up, pre-TT, immediately post-TT and at 3 min post-TT.
Results
Tcore was similar after the warm-up under both conditions, however, at pre-TT Tcore was greater under 20 min (mean ± SD; 20 min 37.8 ± 0.2 vs. 45 min 37.5 ± 0.2 °C; P = 0.002). BL was similar between conditions at all-time points before the TT (P > 0.05). Swimmers demonstrated a 1.5 ± 1.1% improvement in performance under 20 min (20 min 125.74 ± 3.64 vs. 45 min 127.60 ± 3.55 s; P = 0.01). Tcore was similar between conditions at immediately post-TT and 3 min post-TT (P > 0.05), however, BL was higher at these time points under 20 min (P <0.05). Heart rate and RPE were similar between conditions at all-time points (P > 0.05).
Conclusions
200 m freestyle performance is faster 20 min post-warm-up when compared to 45 min probably due to better Tcore maintenance. This has implications for swim race preparation as warm-up procedures should be completed close to entering the pre-race call room, in order to maintain elevated core temperature.
AB - Objectives
Swimmers must enter a marshalling call-room 20 min prior to racing, which results in some swimmers completing their warm-up 45 min pre-race. Since a recovery period longer than 15–20 min may prove problematic, this study examined 200 m freestyle performance after a 20 and 45 min post-warm-up recovery period.
Design
Eight international swimmers completed this randomised and counter-balanced study.
Methods
After a standardised warm-up, swimmers rested for either 20 (20 min) or 45 min (45 min) prior to completing a 200 m freestyle time-trial (TT). Core temperature (Tcore), blood lactate (BL), heart rate and rate of perceived exertion (RPE) were recorded at baseline, post-warm-up, pre-TT, immediately post-TT and at 3 min post-TT.
Results
Tcore was similar after the warm-up under both conditions, however, at pre-TT Tcore was greater under 20 min (mean ± SD; 20 min 37.8 ± 0.2 vs. 45 min 37.5 ± 0.2 °C; P = 0.002). BL was similar between conditions at all-time points before the TT (P > 0.05). Swimmers demonstrated a 1.5 ± 1.1% improvement in performance under 20 min (20 min 125.74 ± 3.64 vs. 45 min 127.60 ± 3.55 s; P = 0.01). Tcore was similar between conditions at immediately post-TT and 3 min post-TT (P > 0.05), however, BL was higher at these time points under 20 min (P <0.05). Heart rate and RPE were similar between conditions at all-time points (P > 0.05).
Conclusions
200 m freestyle performance is faster 20 min post-warm-up when compared to 45 min probably due to better Tcore maintenance. This has implications for swim race preparation as warm-up procedures should be completed close to entering the pre-race call room, in order to maintain elevated core temperature.
KW - Warm-up
KW - swim performance
KW - core temperature
U2 - 10.1016/j.jsams.2012.06.002
DO - 10.1016/j.jsams.2012.06.002
M3 - Article
SN - 1440-2440
SN - 1878-1861
VL - 16
SP - 172
EP - 176
JO - Journal of Science and Medicine in Sport
JF - Journal of Science and Medicine in Sport
IS - 2
ER -