KINE 442 - Dehydration During Exercise

<p>36°F (B)</p> Signup and view all the answers

<p>Greater body mass requires greater fluid intake. (A)</p> Signup and view all the answers

<p>3% to 4% (D)</p> Signup and view all the answers

<p>Decrease in plasma volume (B)</p> Signup and view all the answers

<p>Exercise feels harder (C)</p> Signup and view all the answers

<p>Decreases aerobic capacity and increases blood viscosity (B)</p> Signup and view all the answers

<p>5% or more loss of total body mass (B)</p> Signup and view all the answers

<p>Sweating (B)</p> Signup and view all the answers

<p>Muscle tissue hydration (D)</p> Signup and view all the answers

<p>Reduced muscle endurance and strength (C)</p> Signup and view all the answers

<p>Leads to decrements in strength and anaerobic performance (B)</p> Signup and view all the answers

<p>Decreases sprinting ability (D)</p> Signup and view all the answers

<p>8% (A)</p> Signup and view all the answers

<p>Decreases performance by 15% (B)</p> Signup and view all the answers

<p>Euhydrated state (D)</p> Signup and view all the answers

<p>Strength measures decrease with dehydration (B)</p> Signup and view all the answers

<p>Field hydration methods (D)</p> Signup and view all the answers

<p>Assessment of urine color (A)</p> Signup and view all the answers

<p>Decreased lateral movement ability (A)</p> Signup and view all the answers

<p>Hyponatremia (A)</p> Signup and view all the answers

<p>Palatable and cool fluids (A)</p> Signup and view all the answers

<p>Deterioration of cognitive functions (A)</p> Signup and view all the answers

<p>Women more than men (B)</p> Signup and view all the answers

<p>It significantly decreases endurance capabilities. (D)</p> Signup and view all the answers

<p>Increased heat and humidity. (A)</p> Signup and view all the answers

<p>Greater body mass means increased fluid intake is necessary. (B)</p> Signup and view all the answers

<p>36°F (C)</p> Signup and view all the answers

<p>Impairment in exercise intensity perception. (D)</p> Signup and view all the answers

<p>Cooling efficiency decreases (C)</p> Signup and view all the answers

<p>Dehydration primarily affects aerobic performance without impact on anaerobic (B)</p> Signup and view all the answers

<p>Increased blood viscosity and reduced volume (A)</p> Signup and view all the answers

<p>More than 5% (C)</p> Signup and view all the answers

<p>Adipose tissue (D)</p> Signup and view all the answers

<p>Decline in muscular endurance (A)</p> Signup and view all the answers

<p>Muscle contraction efficiency (C)</p> Signup and view all the answers

<p>Waiting until after exercise to drink (A)</p> Signup and view all the answers

<p>5% to 6% (B)</p> Signup and view all the answers

<p>Performer's heart rate (B)</p> Signup and view all the answers

<p>Decreased sprinting ability (C)</p> Signup and view all the answers

<p>Dark yellow (D)</p> Signup and view all the answers

<p>Plasma osmolality measurement (D)</p> Signup and view all the answers

<p>Excessive fluid intake (D)</p> Signup and view all the answers

<p>They do not need modifications based on conditions. (C)</p> Signup and view all the answers

<p>15% (A)</p> Signup and view all the answers

<p>High temperature environments (D)</p> Signup and view all the answers

<p>Enhanced coordination (D)</p> Signup and view all the answers

<p>Decreased strength performance (B)</p> Signup and view all the answers

<p>Mandatory weight monitoring (A)</p> Signup and view all the answers

<p>Diminished cognitive function (D)</p> Signup and view all the answers

<p>Start in an euhydrated state (C)</p> Signup and view all the answers

Strength decreases more in the upper body due to heat exposure.

Even mild dehydration (2% body mass loss) decreases endurance during marathon.

Fluid intake needs based on body mass and heat/humidity.

36°F (optimal temperature) helps your body efficiently regulate temperature.

Replace lost fluids and electrolytes to prevent dehydration during exercise.

Water loss through sweating during exercise, affecting performance.

Body's natural cooling system during exercise by evaporating water.

Dehydration decreases aerobic performance by impacting blood volume and pressure.

Dehydration's impact on anaerobic performance (strength/endurance) is less significant initially than for aerobic performance.

More than 5% body weight loss during excessive exercise results in decreased strength.

3-4% body weight loss results in a decrease in muscular endurance.

Quantify water loss by weighing before and after exercise.

Drink water during exercise to prevent dehydration.

Sports (like wrestling) that involve strict weight categories.

Maintenance of proper hydration, within ±1% of pre-exercise body weight

Body mass loss more than 1% from pre-exercise weight. Weight loss >1%.

Assessing hydration levels using body mass and urine color in a practical setting.

Indicator of hydration status; lighter color = better hydration.

Low blood sodium levels (117-128 mmol/L) caused often by excessive water intake.

Drinking too much water.

Recommendations for maintaining proper hydration levels before, during, and after exercise.

Begin activity hydrated, maintain during, and rehydrate after to prevent dehydration.

Blood sodium concentration (mmol/L).

Custom made hydration plan that best suits individual needs.

High temperature and humidity can increase the risk of dehydration during an activity.

Protective clothing or gear that limits water loss during exercise.

Methods (like plasma osmolality and urine volume) measuring hydration levels in a controlled setting.

The capacity to sustain physical activity for a prolonged period.

Sweating is the primary way we lose water during physical activity. It helps regulate our body temperature by cooling us down.

Dehydration reduces blood volume and pressure, making it harder for the heart to pump oxygen-rich blood to working muscles. This leads to a decline in aerobic performance.

Humidity plays a major role in how effectively sweat cools us down. Higher humidity makes it harder for sweat to evaporate and cool the body.

Losing more than 5% of your body weight through dehydration significantly weakens your muscles, making you less strong.

Weigh yourself before and after exercise. The difference in weight reveals how much water you've lost.

Drinking water throughout your workout is crucial to replace the fluids you lose through sweat.

Although dehydration slightly affects anaerobic performance, the impact isn't as dramatic as on aerobic performance. This is because anaerobic activities rely less on blood volume and oxygen transport.

During exercise, our bodies burn more energy, generating heat. To prevent overheating, we sweat to cool ourselves down.

When you sweat, you lose electrolytes, so it is important to replace them to prevent dehydration.

Heat exposure can lead to a greater decrease in upper body strength compared to other body parts.

Wrestlers often restrict both calories and fluids to make weight, leading to dehydration of 5-6%, which negatively impacts strength and anaerobic performance.

Dehydration in basketball and soccer affects aerobic and anaerobic performance, leading to decreased sprinting, jumping, shooting accuracy, and overall performance.

Environmental factors like heat and humidity, weight-class sports, protective gear, dark clothing, illness, and age all contribute to dehydration risk.

Light urine color indicates good hydration, while dark urine suggests dehydration.

Start hydrated, maintain hydration during activity, and rehydrate after, using palatable, cool fluids with electrolytes.

They provide electrolytes like sodium, potassium, and magnesium, which are lost through sweat and crucial for muscle function and hydration.

Dehydration reduces blood volume and pressure, making it harder for the heart to deliver oxygen to muscles, lowering aerobic performance.

Sweat evaporates, taking heat away from the body, cooling us down.

Dehydration weakens muscles, decreasing strength as water loss exceeds 5% of body weight.

It helps measure water loss and assess hydration level.