Nut Desp FCNAUP 2014 Parte 3

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<ul><li><p>20-10-2014</p><p>1</p><p>Total body water</p><p> TBW ~60% of body (45-75%); 65% ICW + 35% ECW</p><p> Trained athletes have relatively high TBW values</p><p> high muscle mass (70-80%) and low body fat (10%)</p><p> higher glycogen reserves (3mL H2O/g glicognio)</p><p> Regulated within 0.2 to 0.5% of body mass</p><p>pH, osmolality, temperature, metabolite output</p></li><li><p>20-10-2014</p><p>2</p></li><li><p>20-10-2014</p><p>3</p></li><li><p>20-10-2014</p><p>4</p></li><li><p>20-10-2014</p><p>5</p><p>HYDRATION ASSESSMENT</p><p>3 (&gt; ) consecutive morning nude BW measurements after voiding baseline value</p><p>Acute changes in nude BW during exercise ~ sweat losses fluid replacement</p></li><li><p>20-10-2014</p><p>6</p><p> Drink ~57 mL/kg at least 4 h before the exercise </p><p>If does not produce urine or the urine is dark or highly concentrated </p><p> Drink another ~35 mL/kg about 2 h before the event</p><p>Imediatamente antes (?)</p><p> 5mL/kg Burke, 2000</p></li><li><p>20-10-2014</p><p>7</p><p> Ingerir mxima quantidade sem desconforto para manter perdas 2h ou perdas &gt;3-4g</p><p> Cafena: 1,5mg/kg nos ltimos 40min</p></li><li><p>20-10-2014</p><p>8</p></li><li><p>20-10-2014</p><p>9</p></li><li><p>20-10-2014</p><p>10</p><p>Players at risk of extreme sweat or sodium losses should:</p><p> Increase their dietary salt intake</p><p> During exercise, add extra sodium to fluids (1.5g of salt/L)</p><p> At the first sign of cramps 3 g salt ( tsp) in 600 ml of fluid</p><p> Old practices (salt tablets, bananas, pickle juice ??) are not effective</p><p> Plasma [Na+] &lt; 130 mmol/L headache, vomiting, swollen hands/feet, disorientation (due to</p><p>encephalopathy), and wheezy breathing (due to pulmonary edema) seizure, coma,</p><p>respiratory arrest, and death.</p><p> Cause of hyponatremia?</p><p>In events sweating rate) of hypotonic fluids</p><p>In ultra-endurance events, excessive loss of total body sodium is the primary factor</p><p> At greater risk: smaller and less lean individuals, women, older adults, who run slowly, sweat </p><p>less, are less well trained and drink hypotonic fluids heavily</p></li><li><p>20-10-2014</p><p>11</p><p>Athletes must no gain weight during exercise! </p></li><li><p>20-10-2014</p><p>12</p><p> Will stimulate thirst and glucose absorption, retain fluids, without any detrimental effects on </p><p>health, provided that fluid is enough and renal function is not impaired.</p></li><li><p>20-10-2014</p><p>13</p></li><li><p>20-10-2014</p><p>14</p></li><li><p>20-10-2014</p><p>15</p><p> 48% had iron deficiency (low ferritin levels) without anaemia Performance Those with iron deficiency had significantly greater calcium intake</p></li><li><p>20-10-2014</p><p>16</p></li><li><p>20-10-2014</p><p>17</p><p>Excessive ROS production</p><p> Sarcolemmal phospholipids peroxidation muscle damage</p><p> Damage ATPase pumps, muscle contractile and mitochondrial proteins fatigue</p><p> Promote local inflammation delayed-onset muscle soreness and recovery</p><p> Oxidative stress adversely affect immune function</p></li><li><p>20-10-2014</p><p>18</p></li><li><p>20-10-2014</p><p>19</p></li><li><p>20-10-2014</p><p>20</p></li><li><p>20-10-2014</p><p>21</p><p>Salmo selvagem 500-1000 UI/100g, cativeiro 100-250 UI/100g Chen, 2007</p></li><li><p>20-10-2014</p><p>22</p><p>Skin pigmentationAge</p><p>Time of the daySeasonLatitude</p><p>Smog/cloudSunscreen useTime outdoor</p></li><li><p>20-10-2014</p><p>23</p><p>20-40 ng/mL</p></li><li><p>20-10-2014</p><p>24</p><p>Injuried football players had lower vit D levels than uninjuried Shindle, 2011</p></li><li><p>20-10-2014</p><p>25</p></li><li><p>20-10-2014</p><p>26</p></li><li><p>20-10-2014</p><p>27</p><p>5.000IU/d for 8 weeks</p><p>29 103 nmol/L</p><p> Athletes may require 800-7000 IU/d to achieve optimal status.</p><p> Higher: indoor sports, darker skin, adiposity, live/train &gt; 35-37, extensive clothing and use sunblock. </p></li><li><p>20-10-2014</p><p>28</p><p> Nausea</p><p> Vomiting Poor appetite Constipation Weakness</p><p> Weight loss Mental confusion Cardiac rhythm irregularities Calcification of soft tissues</p></li><li><p>20-10-2014</p><p>29</p><p>1. If you were offered a banned performance-enhancing substance that guaranteed thatyou would win an Olympic medal and you could not be caught, would you take it?</p><p>2. Would you take a banned performance-enhancing drug with a guarantee that you will notbe caught, you will win every competition for the next 5 years, but will then die from adverseeffects of the substance?</p><p>98%</p><p>&gt; 50%</p></li><li><p>20-10-2014</p><p>30</p></li><li><p>20-10-2014</p><p>31</p></li><li><p>20-10-2014</p><p>32</p></li><li><p>20-10-2014</p><p>33</p></li><li><p>20-10-2014</p><p>34</p><p>Cafena</p><p> Reduo da percepo de esforo Maior recrutamento de unidades motoras </p><p> Ergogenic at low doses 3mg/kg Graham et al 1995 </p><p> Reduces perception of fatigue, enhances central drive Graham et al 2004</p></li><li><p>20-10-2014</p><p>35</p></li><li><p>20-10-2014</p><p>36</p><p>Creatina </p></li><li><p>20-10-2014</p><p>37</p></li><li><p>20-10-2014</p><p>38</p><p>300mg/kg + gua (&gt;0,5L), 1 ou 2 h antes do exerccio</p><p>600mg/kg repartido em vrias tomas durante o dia</p></li><li><p>20-10-2014</p><p>39</p><p> Bicarbonato Citrato Beta-alanina Carnosina</p></li><li><p>20-10-2014</p><p>40</p></li><li><p>20-10-2014</p><p>41</p></li><li><p>20-10-2014</p><p>42</p></li><li><p>20-10-2014</p><p>43</p></li><li><p>20-10-2014</p><p>44</p></li><li><p>20-10-2014</p><p>45</p></li><li><p>20-10-2014</p><p>46</p><p>Maughans Rules of Dietary Supplements</p><p>1. If it works, its probably banned</p><p>2. If its not banned, then it probably doesnt work</p><p>3. There may be some exceptions</p></li></ul>