Adolescent: a safe entry into strength
The growth spurt (PHV) and beyond is the most productive window for strength development — with proper technique. This programme keeps the 60-minute daily movement target and adds technique-first strength training 2-3 days a week, plus load management during the growth spurt.
Targets (WHO 2020 + NSCA)
60 min
Daily moderate-vigorous activity
Include vigorous intensity at least 3 days/week
2-3 days
Strength training
Technique first; 48 hours apart
8-10 h
Sleep
For recovery and growth hormone release
Sample weekly template
Licensed athletes slot their sport training into the relevant days; keep the strength days.
Strength A (full body)
Warm-up + squat, push-up/horizontal press, pull (band/pull-up), plank — 2-3 sets × 8-12 technical reps
Aerobic / sport
Running, swimming, cycling or team training; moderate pace
Agility & speed
Sprint drills, change of direction, ladder; short reps with full rest
Strength B (full body)
Warm-up + lunge, shoulder press (light), Romanian deadlift (technique), core — 2-3 sets × 8-12
Sport / play
Team training, match or active games with friends
Long aerobic + mobility
Nature walk/run, then 15 min flexibility and hip-spine mobility
Rest
Active recovery: light walk, stretching; avoid a screen marathon
Do
- •Nail technique with an empty bar/bodyweight first; load only up to the point technique stays clean.
- •During the growth spurt (8+ cm/year), reduce jumping and impact volume and emphasize flexibility.
- •Plan a carb + protein meal within 30-60 min after training.
- •Keep at least 1 full rest day per week; adaptation happens in recovery, not training.
Avoid
- •Maximal lifts (1RM) are not recommended before post-PHV.
- •Continuing to jump with below-knee/heel pain (Osgood-Schlatter, Sever) worsens the condition.
- •Performance supplements (protein powder, creatine, "fat burners") should not be used without clinical approval.
- •Adding early-morning sessions at the cost of sleep ruins recovery.
Technique video guide
Correct form for the core movements on Strength A/B days:
How to do a proper bodyweight squat
Nerd Fitness · Including common mistakes
Dumbbell Romanian Deadlift — beginner technique
J2FIT Strength & Conditioning · Hip-hinge pattern
Plank: proper form, cues and progressions
E3 Rehab · Physiotherapist-led
Frequently asked questions
At what age can teens start at the gym?
Age alone is not the criterion; with technical supervision, moderate loads on machines and free weights can start around 13-14. What matters is supervision, technique and gradual progression.
Does strength training stunt height?
No. Evidence does not show supervised strength training damages growth plates; it increases bone density. The risk lies in poor technique and excessive load.
My performance dropped during the growth spurt — is that normal?
Yes, known as "adolescent awkwardness": rapid growth temporarily disrupts coordination. It recovers within 6-12 months; emphasize technique work and be patient.
What if strength days clash with sport training?
Move strength days to lighter sport days and keep at least 48 hours between them. Total hard days should not exceed 4-5 per week.
Scientific basis
WHO Guidelines (2020); Faigenbaum et al., NSCA Position Statement (2009); Lloyd et al., UKSCA Position Statement on Youth Resistance Training (2014); AAP Strength Training Policy (2020).This programme is educational. Clinical assessment is essential with suspected heart disease, chronic illness, injury, or a history of chest pain/fainting with exercise.