Algebra Q2, ACT Compass Official Sample Test Questions

TL;DR

Doctors use the term max heart rate (MHR) to calculate the training heart rate (THR) using a formula that involves the resting heart rate (RHR) and age. This video explains how to calculate THR for a 43-year-old person with an RHR of 54 beats per minute.

Transcript

number two looks like a giant question right by it's actually not that bad as long as we go through a question slowly and carefully we can handle it so knowledge through the question it says doctors use the term max my heart rate which is the mhr when referring to the quantity found by starting with 220 beats per minute and subtracting one bit per ... Read More

Key Insights

• 💓 Doctors use the term max heart rate (MHR) when referring to the quantity found by starting with 220 beats per minute and subtracting one beat per minute for each year of a person's age.
• 👨‍⚕️ Exercising three or four times each week for at least 20 minutes is recommended by doctors.
• 🥰 THR can be calculated using the formula THR = RHR + 0.65 * (MHR - RHR), where RHR is the resting heart rate and MHR is the max heart rate.
• 🤵 MHR can be calculated by starting with 220 and subtracting one beat per minute for each year of a person's age.
• ❓ Calculating THR requires knowing the RHR and MHR.
• 😒 It is important to use a calculator to calculate the THR accurately.
• 🧓 The THR for a 43-year-old person with an RHR of 54 is approximately 133.95.

Questions & Answers

Q: What is the formula for calculating training heart rate (THR)?

The formula is THR = RHR + 0.65 * (MHR - RHR), where RHR is the resting heart rate and MHR is the max heart rate, calculated by starting with 220 and subtracting one beat per minute for each year of age.

Q: How often should we exercise according to doctors?

Doctors recommend exercising three or four times a week for at least 20 minutes, with the heart rate increased from RHR to THR.

Q: How do we calculate MHR for a specific age?

To calculate MHR, start with 220 and subtract one beat per minute for each year of a person's age. For example, for a 43-year-old person, subtract 43 from 220 to get an MHR of 178.

Q: How do we calculate THR for a specific RHR and MHR?

To calculate THR, use the formula THR = RHR + 0.65 * (MHR - RHR), where RHR is the resting heart rate and MHR is the max heart rate obtained by subtracting one beat per minute for each year of age from 220.

Summary & Key Takeaways

• Doctors recommend exercising three or four times a week for at least 20 minutes with an increased heart rate from RHR to THR.

• The formula for calculating THR is THR = RHR + 0.65 * (MHR - RHR).

• To get MHR, start with 220 and subtract one beat per minute for each year of a person's age.