© 2005 BMJ Publishing Group Ltd & British Association of Sport and Exercise Medicine
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| The first 150 words of the full text of this article appear below. |
The following electronic only articles are published in conjunction with this issue of BJSM (see also pages 189 and 216)
Objectives: To investigate the effects of fluid ingestion on neuromuscular function during prolonged cycling exercise.
Methods: Eight well trained subjects exercised for 180 minutes in a moderate environment at a workload requiring 
60% maximal oxygen uptake. Two conditions, fluid (F) and no fluid (NF) ingestion, were investigated.
Results: During maximal voluntary isometric contraction (MVC), prolonged cycling exercise reduced (p<0.05) the maximal force generating capacity of quadriceps muscles (after three hours of cycling) and root mean square (RMS) values (after two hours of cycling) with no difference between the two conditions despite greater body weight loss (p<0.05) in NF. The mean power frequency (MPF) for vastus lateralis muscle was reduced (p<0.05) and the rate of force development (RFD) was increased (p<0.05) only during NF. During cycling exercise, integrated electromyographic activity
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