Skip to content

Training library / Metrics

Understand your training metrics.

Check what a Lifty Fifty metric counts, which units it uses and what it can tell you about your training.

10 Pillars with metric definitions
56 Metric references
4 Further training areas

The complete metric index

Training focus, activity and coverage.

This reference catalogue groups measures by strength, hypertrophy, power and endurance, with further definitions for activity, consistency, mobility and stability. Lifty Fifty's four pillars are strength, endurance, mobility and stability.

56 metric references

7 metric references

Strength

Relative load, heavy sets and strength-focused work.

Heavy Set Count

sets

The number of working sets performed or planned at a heavy relative intensity.

Calculation and limits

Counts working sets whose load, expressed as a percentage of 1RM, meets the heavy-set threshold.

  • Needs a planned percentage of 1RM or a compatible 1RM reference for the recorded load.
  • Heavy sets cover a broader loading range than the stricter Strength-Zone Set Count.

Strength-Zone Set Count

sets

The number of working sets that fall inside the stricter strength-training load and repetition zone.

Calculation and limits

Counts working sets with high relative intensity and low repetition count according to the strength-zone rule.

  • Requires usable relative intensity and repetition data.
  • Low values can be appropriate in hypertrophy, endurance, deload, or introductory phases.

Average Working Intensity

%

The average relative load used across qualifying working sets.

Calculation and limits

Expresses the load of each qualifying working set as a percentage of its 1RM reference, then averages those percentages.

  • Missing or incompatible 1RM data reduces coverage.
  • Average intensity can hide a mix of very light and very heavy sets.

Heavy Tonnage

kg-reps

The total weighted volume accumulated from heavy qualifying work.

Calculation and limits

Adds load multiplied by repetitions across qualifying heavy working sets.

  • Only weighted, repetition-based heavy work contributes.
  • Tonnage is not directly comparable across unrelated exercises.

Unique Heavy Movements

moves

The number of distinct movements that contributed heavy strength exposure.

Calculation and limits

Counts each movement once, however many qualifying heavy sets it contains.

  • More movements are not inherently better for strength development.
  • This does not assess technique quality or exercise importance.

High-Intensity Sessions

sessions

The number of sessions that included at least one heavy qualifying set.

Calculation and limits

Counts each session that contains at least one qualifying heavy working set.

  • One heavy set can make a session count.
  • Frequency should be interpreted with recovery capacity and programme phase.

Work Demand

WU

A normalised workload score used to compare planned demand between sessions.

Calculation and limits

Combines relative intensity and planned repetitions across qualifying sets.

  • Work units are not kilograms, reps, calories, or a physiological energy estimate.
  • Compare work units within similar programme contexts. They do not measure work you have completed.

6 metric references

Hypertrophy

Working sets, muscle coverage and proximity to failure.

Working Sets Per Muscle

sets

The working sets assigned to each primary muscle group.

Calculation and limits

Uses the movement reference to assign working sets to the primary muscle groups involved.

  • One set can count for more than one primary muscle group.
  • Muscle roles come from the movement reference; individual muscle activation is not measured.

Hypertrophy-Zone Sets

sets

Working sets that meet the defined load and repetition criteria for hypertrophy-focused work.

Calculation and limits

Counts working sets with compatible relative intensity and repetitions inside the hypertrophy-zone rule.

  • Requires relative intensity and repetition data.
  • This counting range is broader than a single textbook range for hypertrophy training.

Close-to-Failure Sets

sets

The number of working sets logged or prescribed near failure using effort data.

Calculation and limits

Uses recorded or planned RPE or RIR to count sets that meet the near-failure threshold.

  • Requires RPE or RIR data.
  • Effort ratings are subjective and can be inaccurate.

Muscle Coverage Count

muscles

The number of muscle groups meeting the defined working-set target.

Calculation and limits

Counts muscles whose primary working-set total reaches the active coverage threshold.

  • Interpret the count against the coverage threshold used in your training view.
  • Coverage count does not indicate whether volume was optimal for any one muscle.

Weekly Tonnage Per Muscle

kg-reps

The weighted volume assigned to primary muscle groups over a week.

Work Demand

WU

A normalised measure for comparing planned workload between sessions.

Calculation and limits

Combines relative intensity and planned repetitions across qualifying sets.

  • Work units are not kilograms, reps, calories, or a physiological energy estimate.
  • Compare work units within similar programme contexts. They do not measure work you have completed.

4 metric references

Power

Explosive movements, impact and power-focused sessions.

Power Set Count

sets

The number of working sets on movements classified as power, explosive, Olympic, or impact-oriented work.

Calculation and limits

Uses the movement reference to count working sets that qualify as power-oriented training.

  • The metric uses movement classification, not velocity sensor data.
  • A counted set does not establish that a movement or its difficulty suits you.

Power Session Frequency

sessions

The number of sessions that included at least one power-qualifying working set.

Calculation and limits

Counts distinct sessions with any qualifying Power work.

  • One qualifying set can make a session count.
  • Session frequency does not show jump height, bar speed, or intent.

Power Movement Count

moves

The number of distinct power-qualifying movements trained or planned.

Calculation and limits

Counts each qualifying movement once, even if it appears in several sets or sessions.

  • More movements are not automatically better.
  • Movement variety does not measure output quality.

High-Impact Set Count

sets

The number of working sets on movements classified as high impact.

Calculation and limits

Counts working sets on movements marked as high impact in the movement reference.

  • High-impact work is not suitable for every member.
  • This uses the movement’s classification. It does not measure ground reaction force.

5 metric references

Endurance

High-repetition resistance work and accumulated workload.

Raw Tonnage

kg-reps

The total weighted working-set volume for muscular-endurance-relevant resistance work.

Calculation and limits

Sums load multiplied by reps for weighted, repetition-based working sets.

  • Unloaded and timed endurance work may be under-represented.
  • Tonnage alone does not show fatigue resistance or effort.

Intensity-Weighted Volume

IWV

A workload score that weights repetition volume by relative intensity.

Exertion Load

load

A workload score that weights volume by recorded effort.

High-Rep Set Count

sets

The number of working sets performed or planned at a high repetition count.

Calculation and limits

Counts non-time-based working sets meeting the high-rep threshold.

  • Rep count alone does not prove low-load endurance intent.
  • Timed holds and carries may be represented elsewhere.

High-Rep Tonnage

kg-reps

The loaded volume accumulated from high-repetition working sets.

Calculation and limits

Adds load multiplied by repetitions across qualifying weighted, high-repetition sets.

  • Bodyweight and unloaded high-rep work may not contribute.
  • Similar totals can come from different movements, effort levels and training demands.

6 metric references

Activity

The overall amount and distribution of recorded training.

Total Sets

sets

The total number of logged sets in the selected period.

Total Reps

reps

The total number of repetitions logged for repetition-based work.

Total Weighted Volume

kg-reps

The total load moved across weighted, repetition-based work.

Total Session Duration

min

The total wall-clock session time in the selected period.

Muscle Distribution

breakdown

A breakdown of recorded sets by muscle group and its role in each movement.

Unique Movements

moves

The number of distinct movements included in the selected period.

6 metric references

Consistency

Training frequency, streaks and time between sessions.

Sessions Per Week

sessions

The number of qualifying training sessions completed or planned in a week.

Sessions Per Muscle

sessions

The number of distinct sessions in which each primary muscle group was trained.

Current Streak Weeks

weeks

The current number of consecutive weeks meeting the active consistency target.

Longest Streak Weeks

weeks

The longest recorded run of consecutive weeks meeting the active consistency target.

Max Gap Days

days

The longest gap between qualifying training days in the selected period.

Training Days Per Week

days

The number of distinct calendar days with qualifying training in a week.

4 metric references

Cardiorespiratory

Aerobic duration, intervals and the activities represented.

Aerobic Session Frequency

sessions

The number of sessions that included cardiorespiratory qualifying work.

Total Aerobic Duration

min

The total duration of aerobic qualifying work.

Interval Session Count

sessions

The number of aerobic sessions using interval-style pacing.

Cardio Modality Count

modes

The number of distinct cardio movements or modalities represented.

7 metric references

Mobility

Movement range, planes and balance demands in the programme.

Full-Range Pattern Movement Count

moves

The number of distinct movements classified within full-range movement patterns.

Mobility Session Frequency

sessions

The number of sessions that included mobility-qualifying work.

Unilateral Movement Count

moves

The number of distinct unilateral movements included in the selected period.

Balance-Demand Movement Count

moves

The number of distinct movements with moderate or high balance demand.

Mobility-Qualifying Sets

sets

The number of sets meeting the defined criteria for mobility-related work.

Full-Range Pattern Coverage

patterns

The number of full-range movement patterns represented in the selected period.

Plane Coverage

planes

The number of movement planes represented in the selected period.

6 metric references

Stability

Timed work, core and carry patterns, and controlled tempo.

Time-Based Movement Count

moves

The number of distinct time-based movements included in the selected period.

Core/Carry Pattern Count

patterns

The number of core and carry movement patterns represented.

Total Stability Time

min

The total duration of timed stability-qualifying work.

Stability Session Frequency

sessions

The number of sessions that included stability-qualifying work.

High Balance-Demand Count

moves

The number of distinct movements classified as high balance demand.

Tempo-Controlled Set Count

sets

The number of working sets with an explicit tempo prescription.

5 metric references

Multicomponent

Coverage across resistance, aerobic, neuromotor and flexibility work.

Modality Coverage Count

modalities

The number of core training modalities represented in a week.

Complete Week Flag

yes / no

A yes/no signal for whether all four core modalities were represented in the week.

Weeks With Full Coverage

weeks

The number of weeks in a longer period where all four core modalities were represented.

Missing Modalities

breakdown

The named modality categories absent from a week.

Bone Stimulus Coverage

signals

The number of qualifying loading and impact categories represented in the week. This describes training, not a measurement of bone health.

These are reference definitions, rather than a list of metrics displayed in every app view. Each calculation requires compatible training data. Counts describe work and coverage; they do not establish gains in strength, muscle, mobility or fitness. Work Demand is listed under both Strength and Hypertrophy, giving 56 per-pillar references.

See the metrics applied to sample training weeks

Further training areas

Additional definitions in preparation.

The library also identifies these four areas. Individual metric definitions are not yet included in their catalogues.

Flexibility

Stretching and flexibility practice.

Metric definitions in preparation

Skill

Movement skill and technical practice.

Metric definitions in preparation

Conditioning

Broader conditioning work.

Metric definitions in preparation

Corrective

Movement modification and corrective exercise references.

Metric definitions in preparation