Exercise prescription and FITT-VP for health

An exercise physiologist prescribes moderate-intensity walking (40–59% HRR) for a client with low numeracy skills. Which plain-language instruction best conveys this intensity?

1. Walk at a speed of approximately 3.0 miles per hour
   A fixed walking speed ignores fitness and terrain; 3.0 mph may be light for one client and hard for another.
2. Keep your heart rate between 110 and 125 bpm
   A heart rate range needs pulse counting or a monitor plus number handling, which is not plain language for this client.
3. Walk at a pace where you can talk but not sing
   "Talk but not sing" is the talk test cue for moderate effort, and it needs no numbers, monitors or scales.
4. Maintain an exertion level of 13 on the Borg scale
   An RPE of 13 does match moderate effort, but a number on the Borg scale is exactly what a client with low numeracy will struggle to use.
5. Exercise at 40% to 59% of your reserve capacity
   A percentage of heart rate reserve is a technical term that a client with low numeracy cannot turn into an actual pace.

When designing a comprehensive exercise program for a client with obesity (BMI >35), which of the following should be prioritized in the initial phase?

1. High-intensity interval training to maximize caloric expenditure
   High-intensity intervals raise injury and dropout risk in a new client with severe obesity; building a tolerable aerobic base comes first.
2. Low-impact aerobic activities that minimize joint stress
   Low-impact aerobic modes such as walking, cycling or water exercise let a client with a BMI over 35 build volume without overloading the joints.
3. Complex movement patterns to develop advanced coordination
   Complex movement patterns add difficulty and fall risk without serving the early goal of safe, repeatable energy expenditure.
4. Heavy resistance training aimed at building maximal muscle mass
   Heavy resistance training aimed at maximal muscle mass is not an early priority and adds joint stress; light-to-moderate resistance work supports, not leads, the program.

For a pregnant woman, which is the BEST alternative method for monitoring exercise intensity given heart rate limitations?

1. Rely solely on blood pressure measurements during exercise
   Blood pressure checked during exercise is impractical and does not tell the woman how hard she is working.
2. Use the RPE scale and Talk Test to ensure moderate intensity
   Heart rate responses change during pregnancy, so ACSM recommends RPE and the talk test to keep the effort moderate.
3. Monitor absolute heart rate values only
   Absolute heart rate targets are exactly what pregnancy makes unreliable, because resting heart rate rises and the response to exercise shifts.
4. Increase intensity until maximum shortness of breath is reached
   Pushing to maximal breathlessness is a vigorous-to-maximal effort and the opposite of the moderate intensity advised for most pregnant women.

Using the ACSM metabolic equation for walking, calculate the estimated gross VO2 for an 80-kg client walking at 3.0 mph on a 5.0% grade.

1. 26.8 mL·kg⁻¹·min⁻¹
   26.8 uses the running horizontal factor of 0.2 instead of walking's 0.1, which doubles the speed term.
2. 15.3 mL·kg⁻¹·min⁻¹
   15.3 is the net cost without the 3.5 resting component (8.0 + 7.2).
3. 22.4 mL·kg⁻¹·min⁻¹
   22.4 does not come out of the walking equation with these inputs; it overstates the cost by about 3.6 mL/kg/min.
4. 18.8 mL·kg⁻¹·min⁻¹
   3.0 mph is 80.4 m/min. Horizontal 0.1 × 80.4 = 8.0, vertical 1.8 × 80.4 × 0.05 = 7.2, plus 3.5 at rest gives about 18.8 mL/kg/min.
5. 11.5 mL·kg⁻¹·min⁻¹
   11.5 is the horizontal and resting parts only (8.0 + 3.5); it leaves out the grade term.

A 35-year-old client wants to improve muscular strength but has never performed resistance training. Which of the following represents the MOST appropriate initial training frequency?

1. 5-6 days per week
   Five or six days a week is a split-routine frequency for experienced lifters and too much for someone who has never lifted.
2. Daily
   Training the same muscles daily leaves no recovery time, which a novice needs for adaptation and to avoid excessive soreness.
3. Once per week
   Once a week gives some benefit but falls short of the 2–3 day frequency that ACSM recommends for building strength.
4. 2-3 days per week
   ACSM recommends training each major muscle group 2–3 days per week, with at least 48 hours between sessions for the same group.

What is the MOST appropriate way to calculate training heart rate using the Karvonen formula?

1. THR = (HRmax − HRrest) × %I
   This stops halfway: it gives the percentage of the reserve but forgets to add resting heart rate back.
2. THR = (HRmax − HRrest) × %I − HRrest
   Subtracting resting heart rate instead of adding it back gives a target below even the reserve fraction itself.
3. THR = (HRmax − HRrest) × %I + HRrest
   The Karvonen formula takes the chosen percentage of heart rate reserve (HRmax − HRrest) and then adds resting heart rate back.
4. THR = (HRmax × %I) + HRrest
   This skips subtracting resting heart rate before taking the percentage and then adds it, so the target runs far too high.

In a beginner's aerobic program, which FITT-VP component does ACSM generally progress first?

1. Pattern (number of bouts per day)
   Pattern describes whether the minutes come in one bout or several. Changing it does not raise the training dose, so it is not what ACSM progresses first.
2. Type (the mode of exercise used)
   Changing the exercise type does not progress the training load; type is chosen for the client's goals and preferences.
3. Intensity (percent of HR reserve)
   Intensity is raised only after the client tolerates longer sessions; raising it first increases soreness, injury and dropout.
4. Time (minutes per session)
   ACSM advises adding about 5–10 minutes per session every 1–2 weeks during the first 4–6 weeks, before intensity is raised.

What is the formula for calculating exercise volume in MET-minutes?

1. MET-minutes = MET value x body weight
   METs times body weight is a step toward energy expenditure, not MET-minutes, and it leaves out duration entirely.
2. MET-minutes = MET value + duration in minutes
   Adding METs to minutes also mixes units; a volume must be the product of intensity and time.
3. MET-minutes = MET value x duration in minutes
   Multiplying the MET value by minutes gives MET-minutes; summed over a week, it is how ACSM expresses aerobic volume.
4. MET-minutes = duration in minutes - MET value
   Subtracting the MET value from the minutes mixes two different units and gives a meaningless number.

When calculating metabolic equivalents (METs) for exercise prescription, which of the following accurately represents moderate-intensity physical activity?

1. 3.0-5.9 METs
   Moderate-intensity activity is 3.0–5.9 METs, roughly three to six times resting metabolism.
2. 6.0-8.9 METs
   6.0–8.9 METs is vigorous intensity, which begins at 6 METs.
3. ≥9.0 METs
   9.0 METs or more is far into vigorous territory, the range of running at about 6 mph or faster.
4. 1.0-2.9 METs
   1.0–2.9 METs covers sedentary to light activity such as slow walking.

A 100-kg client needs a target VO2 of 25 mL·kg⁻¹·min⁻¹ on a leg cycle ergometer. Calculate the required work rate in watts.

1. 128 W
   128 W is too low: it corresponds to only about 780 kg·m/min, well short of the 1,000 kg·m/min the equation calls for.
2. 227 W
   227 W uses the target VO2 with no resting or unloaded-cycling terms removed, so it overstates the load.
3. 195 W
   195 W subtracts only one 3.5 term; the leg cycling equation has two (rest plus unloaded pedaling), so the load comes out too high.
4. 100 W
   100 W is a round guess that equals about 612 kg·m/min, far less than the 1,000 kg·m/min the equation requires.
5. 163 W
   25 − 7 = 18 mL/kg/min; 18 × 100 ÷ 1.8 = 1,000 kg·m/min, and 1,000 ÷ 6.12 is about 163 W.

A 70-kg client running on a treadmill is at 6.0 mph (160.8 m/min) up a 2% grade. Using the ACSM running equation, what is the estimated gross VO2?

1. 38.6 mL·kg⁻¹·min⁻¹
   Horizontal 0.2 × 160.8 = 32.2, vertical 0.9 × 160.8 × 0.02 = 2.9, plus 3.5 gives about 38.6 mL/kg/min.
2. 35.7 mL·kg⁻¹·min⁻¹
   35.7 is the cost of the same speed on the flat (32.2 + 3.5); it leaves out the grade term.
3. 25.4 mL·kg⁻¹·min⁻¹
   25.4 is what the walking equation gives at this speed and grade; running uses 0.2 for speed and 0.9 for grade.
4. 35.1 mL·kg⁻¹·min⁻¹
   35.1 is the net cost without the 3.5 resting component (32.2 + 2.9).
5. 41.8 mL·kg⁻¹·min⁻¹
   41.8 overstates the cost by about 3 mL/kg/min; the grade adds only 0.9 × 160.8 × 0.02, roughly 2.9 mL/kg/min.

Calculate the estimated gross VO2 for a 65-kg client stepping at a rate of 25 steps/min on a 12-inch (0.30 m) bench.

1. 29.9 mL·kg⁻¹·min⁻¹
   29.9 overstates the cost by more than 3 mL/kg/min; with a 0.30 m bench the vertical term is only about 18.0.
2. 26.5 mL·kg⁻¹·min⁻¹
   Horizontal 0.2 × 25 = 5.0, vertical 1.33 × 1.8 × 0.30 × 25 = 18.0, plus 3.5 gives about 26.5 mL/kg/min.
3. 21.5 mL·kg⁻¹·min⁻¹
   21.5 leaves out the horizontal term (0.2 × 25 = 5.0) that every stepping cycle also costs.
4. 25.0 mL·kg⁻¹·min⁻¹
   25.0 is close but does not come out of the equation with these inputs; the three terms add to 26.5.
5. 22.0 mL·kg⁻¹·min⁻¹
   22.0 leaves out the 1.33 factor, which accounts for the energy spent stepping back down.

Calculate the gross VO2 for an 80-kg client performing arm ergometry at a work rate of 600 kg·m·min⁻¹.

1. 30.5 mL·kg⁻¹·min⁻¹
   30.5 overstates the cost; the arm equation has a single 3.5 resting term, and 22.5 + 3.5 is 26.0.
2. 17.0 mL·kg⁻¹·min⁻¹
   17.0 uses the leg cycling factor of 1.8 instead of 3 for arm work (13.5 + 3.5), which underestimates the higher cost of arm cranking.
3. 26.0 mL·kg⁻¹·min⁻¹
   Arm ergometry: 3 × 600 ÷ 80 = 22.5 mL/kg/min, plus 3.5 at rest gives 26.0 mL/kg/min.
4. 20.5 mL·kg⁻¹·min⁻¹
   20.5 applies the leg cycling equation (factor 1.8 plus two 3.5 terms) to arm work, which costs more per unit of work.
5. 22.5 mL·kg⁻¹·min⁻¹
   22.5 is the net cost of the work; it leaves out the 3.5 resting component.

When calculating the Rating of Perceived Exertion (RPE) target for moderate-intensity exercise using the 6-20 Borg scale, which range is MOST appropriate?

1. 12–13
   ACSM puts moderate intensity at an RPE of 12–13 on the 6–20 scale, between "light" and "somewhat hard."
2. 9–11
   9–11 is light intensity, below the moderate band.
3. 14–17
   14–17 is ACSM's vigorous range, from "somewhat hard" up toward "very hard."
4. 6–8
   6–8 is "no exertion" to "extremely light," well below moderate.

You lead a circuit class for adults of mixed fitness, including two older beginners. How can you best keep everyone safe without splitting the group?

1. Schedule separate classes by fitness
   Separate classes split the group, which the stem rules out.
2. Stop the class when one HR passes a cap
   Stopping everyone when one person passes a heart rate cap punishes the group and does not adjust the work for the person who needs it.
3. Let members pick loads without guidance
   Unguided load choices leave beginners to guess, which is how novices end up working too hard.
4. Offer preset regressions per station
   Preset easier versions at each station let every participant work at a safe level inside the same class.
5. Have everyone use the easiest version
   Forcing the whole class to the easiest version under-trains fitter members and is not needed to protect the beginners.

Which of the following represents an appropriate exercise intensity for improving cardiorespiratory fitness in a healthy adult?

1. 40–89% of heart rate reserve
   ACSM recommends moderate (40–59% HRR) to vigorous (60–89% HRR) intensity for most healthy adults.
2. 10–20% of maximum heart rate
   10–20% of HRmax is below resting heart rate for most adults, so it cannot describe exercise at all.
3. 90–100% of maximum heart rate
   90–100% of HRmax is near-maximal effort, sustainable only in short intervals and not the general recommendation.
4. 20–30% of heart rate reserve
   20–30% of HRR is very light intensity, too low to improve fitness in most healthy adults.

For a client beginning a weight loss program, which of the following cardiorespiratory exercise prescriptions is MOST appropriate during the initial 4-6 weeks?

1. High-intensity (70–85% HRR), accumulating 300+ minutes per week, distributed across 6–7 days
   300+ minutes at 70–85% HRR, 6–7 days a week, is a load a newly active client is unlikely to tolerate or stick with.
2. Low-intensity (30–40% HRR), accumulating 60–90 minutes per week, distributed across 2 days
   Low intensity on 2 days for 60–90 minutes per week burns too little energy to support weight loss.
3. Moderate-intensity (40–59% HRR), accumulating 150–200 minutes per week, distributed across 5 or more days
   ACSM starts weight management at about 150 minutes per week of moderate (40–59% HRR) activity on 5 or more days and builds toward 250–300 minutes.
4. Very high-intensity (85–95% HRR), accumulating 75 minutes per week, distributed across 2–3 days
   Very high intensity is hard to sustain for a beginner, and 75 minutes per week is too little volume for weight loss.

When applying the FITT principle to flexibility training for a healthy adult, which of the following represents the MOST appropriate Time component?

1. Hold each stretch for 10–30 seconds, 2–4 repetitions per muscle group
   ACSM advises holding a static stretch for 10–30 seconds and repeating it 2–4 times, about 60 seconds per muscle group.
2. Hold each stretch for 1–2 seconds, 20 repetitions per muscle group
   Holds of 1–2 seconds are too brief to load the tissue the way a static stretch should.
3. Bounce rhythmically for 60 seconds, 1 repetition per muscle group
   Bouncing is ballistic stretching, which ACSM does not recommend as the default method for a healthy adult.
4. Hold each stretch for 3–5 minutes, 1 repetition per muscle group
   Holding one stretch for 3–5 minutes is far beyond the recommended dose and adds no benefit.

A 30-year-old client wants to improve cardiovascular endurance but has never engaged in structured exercise. Which FITT principle recommendation is MOST appropriate for this individual's initial exercise prescription?

1. Frequency: 6 days/week; Intensity: 70–85% HRR; Time: 45–60 minutes; Type: Running or HIIT
   Six days a week of running or HIIT at 70–85% HRR is a vigorous load that invites injury and dropout in someone who has never trained.
2. Frequency: 3 days/week; Intensity: 40–59% HRR; Time: 20–30 minutes; Type: Walking or stationary cycling
   Three days a week at 40–59% HRR for 20–30 minutes of walking or cycling is a moderate starting point that a newly active adult can tolerate and build on.
3. Frequency: 7 days/week; Intensity: 65–75% HRR; Time: 60+ minutes; Type: Swimming or rowing
   Daily sessions of 60 minutes or more at 65–75% HRR are too much volume to start with for a beginner.
4. Frequency: 2 days/week; Intensity: 30–40% HRR; Time: 10–15 minutes; Type: Light calisthenics
   Two days of 10–15 minutes at 30–40% HRR is a very low dose that would produce little change in cardiorespiratory fitness.

Which calculation gives a reasonable estimate of the energy a client expends during an activity?

1. kcal = VO2max × %HRmax × minutes
   VO2max times a percentage of HRmax and minutes mixes an oxygen ceiling with a heart rate fraction and does not give kilocalories.
2. kcal = distance ÷ heart rate
   Dividing distance by heart rate gives no energy unit at all and ignores body mass.
3. kcal = heart rate × minutes
   Heart rate times minutes gives total heartbeats, not energy; body size and oxygen use are missing.
4. kcal = METs × kg × hours
   One MET is about 1 kcal per kilogram per hour, so METs × body mass × hours gives a quick estimate of kilocalories.