Principles of training: frequency, intensity, time, type (FITT), progressive overload, specificity, individuality, reversibility, variety, training thresholds, maintenance, periodisation

The principles of training are the rules every program follows. VCE Physical Education Unit 4 expects you to apply them to specific athletes and specific programs in extended responses. This dot point covers each principle the study design names.

FITT

The standard framework for describing a training prescription:

• Frequency. How often training occurs (sessions per week).
• Intensity. How hard the training is (percentage of maximum heart rate, percentage 1RM, perceived exertion).
• Time. How long each session lasts.
• Type. What kind of training (continuous, interval, strength, plyometric, flexibility, etc).

FITT is the lens through which every training decision is made. A coach designing a session decides the F, I, T, and T values based on the athlete's goals, current fitness, and the time of year.

Progressive overload

The gradual, systematic increase in training stimulus over time. Muscles, the cardiovascular system, and the nervous system adapt to the demands placed on them. The body adapts; the stimulus must keep advancing or improvement stops.

The standard rule is roughly 10% per week increase in training load. Overload can come from:

• Increasing intensity (running faster, lifting heavier).
• Increasing volume (running further, more sets).
• Increasing frequency (more days per week).
• Increasing density (less rest between intervals).

The principle is to overload one variable at a time. Increasing several variables simultaneously compounds injury risk.

Specificity

Adaptation happens in response to the specific demand. The body adapts to what it is trained for, not to general fitness in the abstract.

Specificity covers four dimensions:

• Muscle group specificity. Train the muscles the sport uses.
• Energy system specificity. Train at the intensities and durations the sport demands.
• Movement pattern specificity. Train movements that resemble the sport's movements.
• Speed of movement specificity. Train at the speeds the sport requires.

A swimmer is better served by swim-specific dryland (resistance with cables in swim positions) than by generic gym work because the movement pattern specificity carries over.

Individuality

Each athlete responds differently to the same training stimulus. Genetics, training history, age, sex, sleep, nutrition, stress, and injury history all affect response.

The principle says: design programs for the individual, not the group. The same prescription may produce significant gains in one athlete and overtraining in another. Monitoring (training load, RHR, HRV, performance metrics, subjective markers) is how individuality is operationalised.

Reversibility

The flip side of progressive overload. Training adaptations are lost when training stops or reduces substantially. The principle that "use it or lose it" applies to fitness.

Aerobic adaptations decline faster than strength adaptations: VO2 max drops measurably within 2-3 weeks of detraining; strength holds for 4-6 weeks before declining significantly.

Reversibility is why pre-season exists, why athletes maintain reduced training during off-seasons, and why injuries that force inactivity are costly.

Variety

Repetitive training produces psychological staleness and may produce reduced adaptation. The body and brain respond to novelty.

Variety covers training mode (swim instead of run for cardio), training environment (different routes, different gyms), training partners, and session structure.

Variety is not the same as randomness. A program needs structure to apply progressive overload and specificity. Variety happens inside that structure.

Training thresholds

A threshold is a level of intensity that triggers a specific adaptation.

• Aerobic threshold: roughly 60-85% maximum heart rate. Sustained training in this zone produces aerobic adaptation.
• Anaerobic threshold (lactate threshold): roughly 85-90% maximum heart rate. The intensity at which blood lactate begins to rise sharply. Training at and slightly above lactate threshold improves the body's ability to tolerate and clear lactate.

Heart rate estimates from age use formulas like the Tanaka:

A 17 year old has estimated maximum heart rate around 196 bpm; aerobic threshold zone runs roughly 118 to 167 bpm.

Lactate testing produces a more accurate threshold measurement than heart rate alone, but heart-rate-based prescription is the practical default in most settings.

Maintenance

Once a fitness component has been built, less training is required to maintain it than to build it. The maintenance principle states that lower volume at the same intensity will preserve adaptations during phases where the focus is on another fitness component (e.g., reducing strength training volume while emphasising race-pace running in a peaking phase).

Periodisation

The structured planning of training across phases.

• Preparatory phase (base). Higher volume, lower intensity. Builds the underlying physiological qualities.
• Specific phase. Increasing specificity. Training resembles competition more closely. Volume may decline, intensity rises.
• Competitive phase. Maintains rather than builds. Recovery prioritised. Race-pace work dominates.
• Transition phase. Active rest after competition season ends.

Cycles within periodisation:

• Microcycle. Typically a week.
• Mesocycle. Typically 3-6 weeks.
• Macrocycle. Typically 6-12 months.

A well-planned program for a Year 12 student in a sport with one major competition has a clear macrocycle structure, with mesocycle blocks targeting specific adaptations and microcycle structure adapting weekly to the athlete's response.

How this dot point applies

A typical VCAA exam question asks you to apply the principles to a specific athlete and program. Strong responses pick an athlete, identify their sport's demands, work through the principles in turn, and show how the principles interact to produce a coherent program.

The mistake is to list the principles without applying them. Markers reward specific application to a specific athlete with specific timeframes and specific prescriptions far more than recitation of the principles in the abstract.