_14_15 Fluids-electrolytes2010

_14_15 Fluids-electrolytes2010 - Fluid and Fluid and...

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Unformatted text preview: Fluid and Fluid and electrolytes for electrolytes for athletes athletes athletes athletes Dehydration In the news! Dehydration In the news! z Chicago marathon, October 2007 Hotter than usual for Oct stations ran out of water/sports drinks 18 th mile 35 yr old runner at died many dehydrated; race stopped half way through 300 picked up by ambulances 49 hospitalized Kory Springer Pro football lineman, Minnesota Vikings, 2001 64 335 lbs Weakness & rapid breathing after morning practice Treated at field & called EMT Unresponsive, body temp 108 Died of multiple organ failure Closer to home Closer to home Joey Robertson Joey Robertson 2006 Stafford High School in Fairfax 62, 16 years old Second day of Fall practice Second of the two a day that day Didnt feel well after practice Died of hyperthermia Sedona Sedona sweat lodge sweat lodge z October 2009, Sedona AZ z 38 year old woman and 40 year old man died after participation in sweat lodge ceremony spiritual retrea ceremony, spiritual retreat z 19 hospitalized Self-help guru James Arthur Ray Human body is 50 Human body is 50-60% water 60% water Lean mass ~ 75% water Adipose tissue ~5% water Total Body Water Distribution Total Body Water Distribution Figure 7.3 Important to maintain body Important to maintain body water water Hypo or Hyper hydration can be dangerous Avenues of Water Gain and Loss Avenues of Water Gain and Loss Water balance typically no Water balance typically no problem at rest problem at rest z Is challenging during exercise depending on the conditions and individual Water Balance and Imbalance Water Balance and Imbalance z Hypohydration Body fluid level below normal Inadequate intake, excessive loss or both Water loss from ECF causes water to shift from cells to ECF Cell function is impaired Affects performance and health How is hydration assessed? How is hydration assessed? z Acute body weight loss z Urine osmolarity, color & volume z Plasma hematocri osmolality (increase z Plasma hematocrit, osmolality (increase when dehydrated) z Infusion of label/dyes that can be used to estimate water volume z Bioelectric impedance Easiest Easiest---- Monitoring Hydration Monitoring Hydration Status Status z Acute changes in body weight 1 L of water lost = ~ 1 kg (2.2 lb) Tracking daily weight Tracking pre- and post-exercise weights z Thirst z Urine color Urine Color Chart Urine Color Chart Figure 7.12 dehydrated Some research suggests athletes Some research suggests athletes show up at practice/game show up at practice/game insufficiently hydrated insufficiently hydrated z 67% of FB players measured during 2- a-day practices came to practice dehydated z 35% of European professional soccer players came to practice dehydrated Water Loss During Exercise Water Loss During Exercise z Sweat loss can vary considerably ~ 100 ml daily in non-exercise, temperate conditions...
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This note was uploaded on 03/23/2010 for the course HNFE 4174 taught by Professor Rankin during the Spring '10 term at Virginia Tech.

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_14_15 Fluids-electrolytes2010 - Fluid and Fluid and...

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