This glossary explains the training, nutrition, body composition and follow-up terms that appear on MyFitnessClient screens. Each term has a short definition and says where it appears, on the web and in the app; the full formulas are in the reference articles linked in the nutrition and body composition sections.
Only terms the app shows are included. Business terms, such as client, team or package, are explained in the articles for each area.
Training
These terms appear in workouts, on the web and in the app, except 1RM, which belongs to the fitness assessment. Six of them are set types: in the sets table, a normal set shows its number and the others show a letter code. To change the type, select the set number: Set Type opens, with the name and explanation of each type.
1RM
The maximum load for a single repetition of an exercise, measured or estimated with a formula (one-repetition maximum). The app does not calculate 1RM: it stores the value you enter, in kg.
Where it appears: in the fitness assessment, in the Strength Tests section, in the Bench Press (1RM), Squat (1RM) and Deadlift (1RM) fields.
AMRAP
One of the circuit modes: as many rounds as possible within a set time. The app describes it like this: “Complete as many rounds as you can before time runs out.”
Where it appears: in a circuit's settings, next to Fixed rounds and For Time. See also Circuit, in this section.
Back-off Set
Set type marked B: “Last set, lighter and with more reps”. It counts as a working set.
Circuit
A group of exercises, the stations, done one after another and repeated in rounds, with rest between stations and between rounds. It has three modes: Fixed rounds (“Repeat the rounds with prescribed rest.”), AMRAP and For Time (“Complete the rounds as fast as possible.”), the last one with an optional time cap.
Where it appears: in the menu of an exercise in the workout, under Create Circuit.
Cluster Set
Set type marked C: a set split into blocks, from 2 to 10, with a short rest between them. Each block has its own reps, and the set counts as a working set. It only appears in the list of types for exercises with reps.
Drop Set
Set type marked D: “Reduce weight and continue without rest”. It counts as a working set.
Feeder Set
Set type marked Fs: a set to feel the day's weight before the main sets. Like a warm-up set, it gets no number and is left out of the set count, the volume and the records.
RIR
The reps you could still have done before failure, counted at the end of the set (repetitions in reserve). The lower it is, the closer to failure the set was; the field accepts values from 0 to 10.
Where it appears: as a column in the sets table, when the exercise uses the Custom tracking type with the RIR field. Selecting the column header shows the explanation.
RPE
The effort felt in a set, on a scale from 1 to 10 where 10 is the maximum possible (rating of perceived exertion). The field accepts values from 0 to 10.
Where it appears: as a column in the sets table, when the exercise uses the Custom tracking type with the RPE field. The Custom tracking type takes 1 to 4 fields from the list, and selecting a column header shows the explanation.
Superset
Two or more exercises done alternately: one set of each, with no rest between them, and rest only at the end of each round.
Where it appears: in the menu of an exercise in the workout, under Create Superset.
Tempo
The pace of each rep, in seconds, written as four numbers: lowering, pause, lifting, pause. An X means as fast as possible; for example, 3-1-1-0 means 3 seconds lowering, a 1-second pause, 1 second lifting and no pause at the end.
Where it appears: as a column in the sets table, when the exercise uses the Custom tracking type with the Tempo field. It is a free-text field.
To Failure
Set type marked F: “Do reps until you can't do any more”. It counts as a working set.
Warm-up
Set type marked W: a warm-up set, done before the working sets. It gets no number and is left out of the set count, the volume and the records.
Nutrition
The formulas, activity levels and sources for these terms are in How MyFitnessClient calculates calories and macros.
BMR
Basal metabolic rate: the energy the body uses in a day at complete rest, in kcal. The calculator estimates it with one of three formulas: Mifflin-St Jeor, Harris-Benedict (revised) or Katch-McArdle.
Where it appears: on the web, in the meal plan's Macro Calculator, under the name BMR. In the fitness assessment, the Basal Metab. field stores the value from a bioimpedance scale or another estimate; in the app, the check-in also has this field.
Macros
The macronutrients that give food its calories: protein, carbohydrates and fat, counted in grams. In the Macro Calculator, each gram of protein or carbohydrate counts as 4 kcal and each gram of fat as 9 kcal.
Where it appears: in the meal plan's Daily Goals and in the client's Nutrition, next to the calories. On the client side, see View your meal plan for the day and your goals.
TDEE
Total daily energy expenditure: the BMR multiplied by the activity level (also called daily calorie expenditure). The calculator uses five activity levels, with multipliers from 1.2 to 1.9.
Where it appears: on the web, in the meal plan's Macro Calculator, under the name TDEE. From it, the calculator adds or removes calories according to the goal and reaches the daily target.
Body composition
These terms appear in the fitness assessment: the professional opens it in Assessments and the client in Progress. The formulas, the order of the methods and the sources are in How MyFitnessClient calculates body fat percentage.
BMI
Body Mass Index: the weight in kg divided by the square of the height in meters. The app calculates it on its own when the assessment has weight and height, and the BMI classification follows the WHO ranges.
Where it appears: on the BMI card of a saved assessment, with the value and the classification.
Body fat percentage
The share of body weight that is fat, as a percentage. It can come from a bioimpedance scale, entered in the Fat field, or be estimated by the app from skinfolds (Jackson-Pollock) or circumferences (US Navy).
Where it appears: in the assessment, in the Fat field, and on the BMI card, in the estimated body fat line, with the method used. Without Male or Female as the gender in the client's profile, the app does not estimate it; without the date of birth, it does not estimate it from skinfolds. In the app, the check-in calls it Body fat (%).
Fat mass
The amount of fat in the body, in kg. When the assessment has the weight and the percentage entered in the Fat field, the app fills it in on its own (weight × body fat percentage ÷ 100), if the field is empty or was filled in by the app.
Where it appears: in the Body Composition section of the assessment, in the Fat Mass field.
Jackson-Pollock 3 skinfolds
A method that estimates body fat percentage from three skinfolds, sex and age: chest, abdominal and thigh in men; triceps, suprailiac and thigh in women. In the automatic choice, the app uses it when there is no entered value and not all seven skinfolds of Jackson-Pollock 7 skinfolds.
Where it appears: on the assessment's BMI card, as Jackson-Pollock 3 skinfolds or JP3. In the app, the assessment note says “Jackson-Pollock 3-site skinfold”.
Jackson-Pollock 7 skinfolds
A method that estimates body fat percentage from seven skinfolds (chest, midaxillary, triceps, subscapular, abdominal, suprailiac and thigh), sex and age. The skinfolds give the body density, and the Siri equation turns it into a percentage, as in the 3-skinfold method. In the automatic choice, it comes right after the entered value.
Where it appears: on the assessment's BMI card, as Jackson-Pollock 7 skinfolds or JP7. In the app, the assessment note says “Jackson-Pollock 7-site skinfold”.
Lean mass
Everything that is not fat, including water and bone, in kg. The app fills it in the same way: the weight minus the fat mass.
Where it appears: in the Body Composition section of the assessment, in the Lean Mass field.
Skinfolds
The thickness of a fold of skin and fat at one point of the body, measured in millimetres with a caliper (also called skinfold thickness). They are used to estimate body fat percentage with the Jackson-Pollock methods.
Where it appears: in the Skinfolds (mm) section of the assessment, with nine sites: chest, midaxillary, triceps, subscapular, abdominal, suprailiac, thigh, biceps and calf. Biceps and calf are recorded, but they do not count in the estimates.
US Navy
A method that estimates body fat percentage from the height and from circumferences measured with a tape measure: neck and waist in men, plus the hips in women. It needs sex but uses neither age nor skinfolds; in the automatic choice, it is the last method.
Where it appears: on the assessment's BMI card, as US Navy. In the app, the method is called “US Navy (circumference)”.
Waist-to-hip ratio
The waist divided by the hips, both in cm. It is just a number, with no classification.
Where it appears: on the web, when you open an assessment with weight, height, waist and hips, on the BMI card, in the Waist/Hip line. The app does not show it.
Follow-up
Check-in
The questionnaire the client fills in regularly to record weight and progress, for example with progress photos. The answers go to the client's Progress, and the professional chooses how often to ask for it: every day, every week, every 15 days, every N days, every month or only when the client wants.
Where it appears: on the client's Home, under Complete check-in (in the app, Do today's check-in), which changes to Log a check-in outside the scheduled day. The professional sets it up in Questionnaires, in a questionnaire of the Check-in type.
Health questionnaire (anamnesis)
The form with the client's health, habits, physical activity and goals, which the professional asks for to prepare the plan. The screen itself explains: “This information helps your professional create a safe and personalized plan for you.”
Where it appears: the client fills in the Health questionnaire; in the app, it is in Settings, under Health questionnaire. The professional sees the status of the form on the client's page, in the Health questionnaire section.
PAR-Q
A questionnaire on readiness for physical activity (Physical Activity Readiness Questionnaire), with yes-or-no questions about the heart, blood pressure, dizziness, chronic conditions, medication and bone or joint problems. The form includes the seven general PAR-Q questions, answered by the person themselves.
Whatever the answers, the form always shows the note that, with at least one “Yes” answer, the person should talk to a doctor before starting or increasing physical activity. On the form the professional sees, a badge only says whether there was any “Yes” answer (Positive answers) or none (All answers “No”). The app neither scores nor classifies the answers and does not include the later pages of the official questionnaire, the PAR-Q+, which is at eparmedx.com.
Where it appears: in the Health questionnaire, in the PAR-Q (Physical Activity Readiness Questionnaire) section.
Re-assessment
A new fitness assessment, done to compare with the previous one. The app counts the days since each client's last assessment: at 42 days or more, the client gets the Re-assess tag; at 84 days or more, Overdue.
Where it appears: in the professional's Assessments list, with the Re-assessment status filter. When there are clients to re-assess, the professional gets a reminder at 9:00 in their own time zone, and the same client only comes back into the reminder 30 days later; in the notification settings, this reminder is called Clients due for re-assessment.
Sources
The formulas, the constants and the details of each source are in the two reference articles linked in the nutrition and body composition sections. These are the works that the Mifflin-St Jeor, Harris-Benedict, Jackson-Pollock and Siri formulas come from, plus the PAR-Q+.
- Mifflin-St Jeor: Mifflin MD, St Jeor ST et al., Am J Clin Nutr, 1990, 51:241-7.
- Harris-Benedict (revised): Roza AM and Shizgal HM, Am J Clin Nutr, 1984.
- Jackson-Pollock for men: Jackson AS and Pollock ML, Br J Nutr, 1978, 40:497-504.
- Jackson-Pollock for women: Jackson AS, Pollock ML and Ward A, Med Sci Sports Exerc, 1980, 12:175-81.
- From body density to body fat percentage: the Siri equation (1961).
- PAR-Q+: the official version is by the PAR-Q+ Collaboration, at eparmedx.com.