Home Current News News Archive Shop/Advertise Ridecamp Classified Events Learn/AERC
Endurance.Net Home Ridecamp Archives
ridecamp@endurance.net
[Archives Index]   [Date Index]   [Thread Index]   [Author Index]   [Subject Index]

[RC] Recovery - Ridecamp Guest

Please Reply to: ti tivers@xxxxxxx or ridecamp@xxxxxxxxxxxxx
==========================================

Authors EM Peters, PJ Robson, NC Kleinveldt, VL Naicker, VD Jogessar
Title   Hematological recovery in male ultramarathon runners: the effect of 
variations in training load and running time
Full source     Journal of Sports Medicine and Physical Fitness, 2004, Vol 44, 
Iss 3, pp 315-321

Aim. Haematological response to the 2001 downhill Comrades Marathon was 
compared in high (>120 km/w in training; 3 weeks of pre-race taper) and low 
(<80 km/w in training; 2 weeks of pre-race taper) training status groups. 
Methods. Full blood counts, differential lymphocyte counts (CD3, CD4, CD8, 
CD19, CD56), serum cortisol, C-reactive protein (CRP) and creatine kinase (CK) 
were measured in blood samples donated 21 hours before and 16 hours after a 90 
km ultramarathon. Results. Despite significantly faster mean race finishing 
time (8.03 h vs 10.53 h; p<0.001) and greater percentage incidence (55.6% vs 
40%) of post-race upper respiratory tract infection (URTI) in the highly 
trained group, these faster runners did not show evidence of a slower post-race 
recovery in terms of total leukocyte, neutrophil, total or differential 
lymphocyte counts (p>0.05). CRP concentrations were, however, markedly higher 
in the slower, less trained group (65.310.7 vs 38.35.9; p<0.01). Conclusion. 
Despite greater systemic evidence of post-race muscle inflammation and an acute 
phase response in the slower runners in a downhill ultramarathon race, the 
haematological recovery of well trained runners who undergo a 3-week taper 
period prior to the ultramarathon is not different to that in less trained 
runners who spend almost 3 hours longer on the road. The higher prevalence of 
post-race URTI symptoms in the fast, well trained group does not appear to be 
related to lymphocyte recovery in peripheral blood.


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Ridecamp is a service of Endurance Net, http://www.endurance.net.
Information, Policy, Disclaimer: http://www.endurance.net/Ridecamp
Subscribe/Unsubscribe http://www.endurance.net/ridecamp/logon.asp

Ride Long and Ride Safe!!

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-