Principles of Training - SPORT FITT and Progressive Overload
Why Principles of Training Matter
Training must be structured and purposeful to produce improvement. The principles of training are rules that ensure training is effective, safe, and produces the desired adaptations. Ignoring them leads to plateaus, injury, or regression.
The SPORT Principles
The acronym SPORT covers the five core training principles:
S — Specificity
Training must be relevant to the sport, activity, or fitness component being developed.
- The muscles used, the energy system targeted, and the type of movement should match the demands of the sport.
- Example: a sprinter should focus on anaerobic training (e.g. interval sprints), not long-distance jogging.
- Example: a swimmer should train in water, not just on a treadmill.
P — Progressive Overload
The body must be subjected to gradually increasing demands over time to continue improving. If training stays the same, the body adapts and improvement stops (plateau).
Ways to apply progressive overload:
- Increase the weight/resistance
- Increase the number of reps or sets
- Increase the duration of training
- Increase the intensity (work harder or faster)
- Decrease the rest between sets
Key point: Overload must be gradual — too much too soon causes injury or overtraining.
O — Overtraining
Training too much without adequate rest leads to overtraining, which causes:
- Decreased performance
- Increased injury risk
- Chronic fatigue
- Loss of motivation
- Weakened immune system
This is a warning, not a goal — rest and recovery are essential parts of any training programme.
R — Reversibility
If training stops or intensity decreases significantly, the body's fitness adaptations will be lost ("use it or lose it"). This is sometimes called detraining.
- It takes roughly three times longer to regain fitness than it took to lose it.
- Aerobic fitness is lost more quickly than strength.
- Injuries and illness can cause enforced reversibility.
T — Tedium
Training programmes must include variety to prevent boredom (tedium). A bored performer is more likely to lose motivation and quit.
- Vary the training methods, exercises, locations, and training partners.
- Example: alternate between swimming, cycling, and running for cardiovascular training.
The FITT Principle
FITT provides a practical framework for designing and adjusting a training programme:
| Letter | Stands For | Meaning | Example |
|---|---|---|---|
| F | Frequency | How often you train (sessions per week) | 3–5 sessions per week |
| I | Intensity | How hard you train | Running at 75% max HR; lifting at 80% 1RM |
| T | Time | How long each session lasts | 30–90 minutes per session |
| T | Type | What kind of training you do | Continuous, interval, weight training, etc. |
Applying FITT to Progressive Overload
FITT is the mechanism through which you apply progressive overload:
- Increase Frequency — train 4 times per week instead of 3
- Increase Intensity — run faster, lift heavier
- Increase Time — extend sessions from 30 to 45 minutes
- Change Type — introduce a more demanding training method
Training Thresholds and Target Zones
To train effectively, you need to work at the correct intensity. This is guided by your maximum heart rate (MHR) and training zones.
Maximum heart rate = 220 − age
| Training Zone | % of MHR | Develops | Example |
|---|---|---|---|
| Aerobic training zone | 60–80% | Cardiovascular endurance, fat burning | Jogging, cycling |
| Anaerobic training zone | 80–90% | Speed, power, anaerobic capacity | Sprinting, HIIT |
Example calculation:
A 16-year-old performer wants to train in the aerobic zone.
- MHR = 220 − 16 = 204 bpm
- Lower threshold = 204 × 0.6 = 122 bpm
- Upper threshold = 204 × 0.8 = 163 bpm
- Aerobic training zone = 122–163 bpm
Individual Differences / Needs
Every performer is different. A training programme must consider:
- Age — younger performers may need lower intensity; older performers may have different recovery needs
- Gender — physiological differences (e.g. muscle mass, hormones) may affect training capacity
- Current fitness level — beginners need a different starting point to elite athletes
- Goals — a marathon runner and a sprinter need very different programmes
- Injuries or medical conditions — training must be adapted to avoid aggravating existing conditions
Rest and Recovery
Rest is the time allocated for the body to recover between training sessions. During rest:
- Muscles repair micro-tears caused by training
- Energy stores (glycogen) are replenished
- Adaptations occur (the body gets stronger/fitter)
Without adequate rest, the body cannot adapt and the risk of overtraining increases. A typical programme includes 1–2 rest days per week.
Exam Tips
- Be able to define each principle and give a sporting example.
- Calculation questions on training zones are common: practise the formula MHR = 220 − age and calculating percentages.
- Extended-answer questions often ask you to design a training programme for a named performer — use FITT to structure your answer and justify each choice with specificity and progressive overload.
- Do not confuse overtraining (negative, too much) with overload (positive, gradually increasing demand).
- Link reversibility to real scenarios like injury layoffs or off-season breaks.