Abstract
The present study aimed to examine the effectiveness of an individualized training program based on force-velocity (FV) profiling on jumping, sprinting, strength, and power in athletes. Forty national level team sport athletes (20±4years, 83±13kg) from ice-hockey, handball, and soccer completed a 10-week training intervention. A theoretical optimal squat jump (SJ)-FV-profile was calculated from SJ with five different loads (0, 20, 40, 60, and 80kg). Based on their initial FV-profile, athletes were randomized to train toward, away, or irrespective (balanced training) of their initial theoretical optimal FV-profile. The training content was matched between groups in terms of set x repetitions but varied in relative loading to target the different aspects of the FV-profile. The athletes performed 10 and 30m sprints, SJ and countermovement jump (CMJ), 1 repetition maximum (1RM) squat, and a leg-press power test before and after the intervention. There were no significant group differences for any of the performance measures. Trivial to small changes in 1RM squat (2.9%, 4.6%, and 6.5%), 10m sprint time (1.0%, -0.9%, and -1.7%), 30m sprint time (0.9%, -0.6%, and -0.4%), CMJ height (4.3%, 3.1%, and 5.7%), SJ height (4.8%, 3.7%, and 5.7%), and leg-press power (6.7%, 4.2%, and 2.9%) were observed in the groups training toward, away, or irrespective of their initial theoretical optimal FV-profile, respectively. Changes toward the optimal SJ-FV-profile were negatively correlated with changes in SJ height (r=-0.49, p<0.001). Changes in SJ-power were positively related to changes in SJ-height (r=0.88, p<0.001) and CMJ-height (r=0.32, p=0.044), but unrelated to changes in 10m (r=-0.02, p=0.921) and 30m sprint time (r=-0.01, p=0.974). The results from this study do not support the efficacy of individualized training based on SJ-FV profiling.
Highlights
Force-velocity (FV) profiling has received increasing attention as a tool for individual training prescriptions in athletes.1-3 Individualizing training based on the FV-profile is founded on the concept of a theoretical optimal FV- profile.[4,5] Samozino et al.[1,2,4] showed that the difference between the theoretical optimal FV-p rofile and the actual measured FV-profile, termed FV Imbalance (FVIMB), is both theoretically and experimentally related to jumping performance
This means that the theoretical framework can predict athletes jump height based on their FVIMB and FV-m aximal power (Pmax), as well it shows that larger FV Imbalance predicts lower jump heights for a given Pmax
Several studies have shown that an individualized training program based on FVIMB, targeting the least developed capacity of the participants, is an effective strategy to improve jumping performance.3,6-8 the athletes that have a “force-oriented profile” perform predominantly high-velocity exercises, whereas athletes with “velocity-oriented profiles” perform predominantly high force exercises in their training.3,6-8 Thereby, improving jumping performance by reducing the athletes individual FVIMB, without changes in Pmax
Summary
Force-velocity (FV) profiling has received increasing attention as a tool for individual training prescriptions in athletes.1-3 Individualizing training based on the FV-profile is founded on the concept of a theoretical optimal FV- profile.[4,5] Samozino et al.[1,2,4] showed that the difference between the theoretical optimal FV-p rofile and the actual measured FV-profile, termed FV Imbalance (FVIMB), is both theoretically and experimentally related to jumping performance. We hypothesized that changes in SJ-p ower would predict changes in CMJ and SJ height, as well as 10 and 30 m sprint time
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
