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A short class with Sarah and her students. The other ways are under More.
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Let's start with how we can assess our physical needs while hiking. Can anyone tell me what the ACSM walking equation calculates?
Is it about how much oxygen we use while walking?
Exactly! It helps us understand our energy expenditure. The formula is: VO₂ (mL·kg⁻¹·min⁻¹) = 0.1 × speed (m·min⁻¹) + 1.8 × speed × grade + 3.5. This can help predict how much energy we need for different speeds and terrains.
So, we need to account for the incline too?
Yes! That’s crucial since hiking uphill requires more energy. Now, along with this, what do we think about total daily energy expenditure or TDEE?
Isn't that your metabolic rate plus activity level?
Exactly right! The TDEE is influenced by basal metabolic rates and an activity factor ranging from 1.2 to 1.9, plus any additional load from fieldwork.
So, it’s important to eat enough before we hike?
Precisely! Understanding your energy needs is essential for performance. To summarize, the ACSM walking equation helps us predict oxygen use, and TDEE gives us insight into our overall energy needs. Great discussion, everyone!
Next, let’s talk about equipment. Why do we maintain logs for gear like our backpacks?
So we can track how much weight we carry?
Yes! And also, maintaining a backpack load diary helps us optimize weight distribution and performance. What should be included in this log?
Weight of each item, right?
Correct! Also, the position of the item in the pack and how it affects our center of gravity. Does anyone know what kind of equipment ratings we should look for when choosing shelters?
Hydrostatic head and UV resistance?
Exactly! Hydrostatic head measures how waterproof a tent is, and UV resistance tells us how durable it is against sun exposure. Summing up, keeping good logs and understanding specifications can significantly impact our safety and comfort.
Now, let's dive into nutrition and hydration. Why is macronutrient timing important?
To ensure we have enough energy while hiking?
Exactly! For strenuous activities, we should aim for 1.1g of carbs per kg of body weight per hour. What about proteins?
0.25g per kg after activity?
Right! And fats should be minimal, focusing on MCT oils for endurance. How about hydration?
We need to replace lost fluids based on sweat rate, right?
Exactly. As a rule, replace fluid equal to sweat loss plus an additional 150 mL for every 0.5 L of sweat lost. Great insights! Remember, proper fueling is key to success on the trail.
Finally, let’s discuss risk assessment. Why is it critical for our expeditions?
To prevent accidents and injuries?
Absolutely! We use a risk matrix to evaluate hazards. What factors do you think we need to assess?
Likelihood and severity?
Correct! For example, hypothermia or altitude sickness requires specific attention. And what should we have in our Emergency Action Plan, or EAP?
Roles and communication details for the team?
Exactly! Plus evacuation criteria and documentation forms for incidents. In closing, prioritizing safety through comprehensive risk management ensures enjoyable and safe expeditions.
Understanding energy needs through the ACSM walking equation.
Total daily energy expenditure calculated using metabolic rate and activity level.
Importance of maintaining logs for gear performance.
Correct macronutrient timing and hydration during hikes.
Evaluation of hazards using a risk matrix.
To hike the path without a hitch, know your needs, it’s not a pitch.
Imagine a hiker named Jack who carried extra snacks on his back. When he reached the top, he was filled with glee, all because he planned effectively.
For TDEE: Basal + Active + Extras = Energy (BAE Equation).
S.H.I.E.L.D. - Safety, Hydration, Inventory, Equipment, Logs, Diet.
Term
ACSM walking equation
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Term
TDEE
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Term
Hydrostatic head
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Risk matrix
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A formula used to estimate oxygen consumption during physical activities such as walking.
The total amount of calories burned in a day, including basal metabolism and activity level.
A measure of a fabric's ability to withstand water pressure, indicating its waterproof quality.
The strategic consumption of carbohydrates, proteins, and fats around the timing of physical activities to optimize performance.
A tool used to assess the likelihood and severity of potential hazards in any situation.
This section covers essential concepts for planning hiking and expeditions, focusing on physiological profiles, equipment considerations, nutrition, hydration, and risk management.
In this section, students will learn about key elements in hiking and expedition planning including understanding physiological needs during hikes using energy modeling, selecting and maintaining the right equipment, developing protocols for nutrition and hydration, and conducting risk assessment for safety during expeditions. These foundational skills are crucial for successful outdoor activities.
This section delves into the multifaceted process of planning a successful hiking or outdoor expedition. It encompasses various key components that are essential for ensuring safety, endurance, and enjoyment during outdoor activities.
Physiological Profile & Energy Modeling: This involves using the ACSM walking equation to determine oxygen expenditure based on speed and terrain, along with calculating total daily energy expenditure (TDEE) by incorporating basal metabolic rates and activity factors.
Equipment Specifications & Maintenance Logs: Understanding the lifecycle of footwear, logging backpack loads for optimal distribution, and assessing shelter ratings based on critical factors like hydrostatic head and UV resistance.
Nutrition & Hydration Protocols: This includes macronutrient timing to ensure adequate energy during activity, employing hydration algorithms based on sweat rates, and maintaining electrolyte balance for optimal performance.
Risk Assessment & Emergency Response: Utilizing risk matrices to evaluate potential hazards and formulating emergency action plans (EAP) that detail roles and communication channels during incidents.
By mastering these components, individuals can ensure a more successful and enjoyable outdoor experience.