Fig. 03 · Doctoral researchHamstring strength · sprinting · injury risk
PhD Research Project
Doctoral research on hamstring strength, sprinting, and injury risk.
Sports Scientist
Strength &ConditioningCoach
(PhD, CSCS — Speed enhancement enthusiast)
Bridging research and practice in strength, speed, and youth athletic development.
Fig. 01
- Research Citations
- 1000+
- Countries
- 13+
- Years Experience
- 14+
02 / 08Problem / solution
Bridging Science & Practice
Johan works in both places: measuring, publishing and coaching, so what happens in the lab shapes what happens on the field, and the other way round.
In the lab
Johan Lahti is a strength & conditioning coach and sports scientist bridging research and practice in strength and speed for all ages.
- PhD
- CSCS
On the field
Highlight
International Consultant
Travels internationally to clubs, events and clinics to hold workshops and lectures.
03 / 08Four areas
Expertise
Evidence-based hamstring training strategies.
Sprint performance optimization through assisted/resisted training and force–velocity profiling, plus comprehensive strategies for minimizing injury risk in sprint-based and team sports.
Individual profiling and performance testing that show what to train, and whether the training worked.
Translating biomechanical and physiological research into practical training solutions.
04 / 08Research · education · publishing
Featured Work
Fig. 04 · 8-Year Longitudinal Research · 2025–2033
Hockey Research Project
In cooperation with KIHU (Finland's high performance sport institute). Youth development in ice hockey, plus injury-risk association studies in professional ice hockey.
Upcoming book
Speed Training— 2028
Signed book contract with publisher VK Kustannus Oy. Co-author Ville Vilen. Expected 2028.
05 / 08Results
Proof
- Research Citations
- 1000+
- Countries
- 13+
- Years Experience
- 14+
Presented in
13+countries
06 / 08Timeline
Experience
Split 01 · 2024–present
Head of Youth Performance
Jokerit Ice-Hockey Club (U13–U20)
Leading comprehensive youth performance development across all age groups.
Split 02 · 2021–present
Strength & Conditioning Coach
Jokerit Ice-Hockey Club (U20)
S&C programming and coaching for elite junior ice-hockey players.
Split 03 · 2012–present
Co-Owner & S&C Coach
R5 Athletics & Health, Helsinki
S&C coaching for football and ice-hockey players, sprinters, and golfers. Comprehensive performance testing including VO₂max, sprint profiling, and force plate assessments.
Split 04 · 2024
Consultant
Finnish Football Federation / Olympic Training Center
Designing testing programs for top football prospects.
Split 05 · 2021–2023
Sports Science Lecturer
Arcada
Split 06 · 2018–2019
S&C Lecturer
University of Nice Sophia Antipolis, France
Course: “Training for increased force at different velocities in sport” (25 hours) for Master's students.
Split 07 · 2016–2017
S&C Coach
Eräviikingit Junior Floorball Teams
Programming and training for ~28 players (ages 15–17) in a top junior club.
Split 08 · 2015–2017
Coach
Hardknocks Helsinki MMA Team
S&C programming and coaching for professional and amateur MMA athletes.
Split 09 · 2014–2015
Senior S&C Coach
Athlete Factory, Calgary, Canada
Coaching athletes (ages 9–18) across multiple sports with emphasis on acceleration, change of direction, and injury prevention.
07 / 08Services
How Can I Help
01Workshops & EducationHamstring workshops, plus lectures on the science of speed and training for speed, for clubs, conferences and federations.Workshops & Lectures →02ConsultationProfiling, testing and programme design for teams and individual athletes, on site or remote.Request consultation →03CoachingIndividual strength and speed coaching. Ask by email.Email me →
Limited spotsHamstring Workshop, Level 1–212–13.12.2026 · Urhea, Helsinkifrom €359 · Book →08 / 08Final call