All three groups showed improvements at 12 weeks; however, HKI-272 chemical structure at 6 months only the groups using the eccentric exercises and the heavy slow resistance exercises still showed improved VISA-P and VAS scores. The heavy slow resistance group showed improved tissue normalisation of the collagen and also demonstrated better clinical presentations

than the eccentric group within the 12-week follow-up. Combined exercises with eccentrics, concentrics and plyometric training for the Achilles tendon were studied by Silbernagel and colleagues.49 Athletes were allowed to continue training in their sports during the first 6 weeks of rehabilitation, as long as their pain did not go over 5/10 on the VAS during activity and returned to normal by the next morning.49 While this study was investigating Achilles tendinopathy, this combined approach is often used clinically with patellar tendinopathy and should be considered as a treatment option. Functional strengthening must address high-load tendon capacity as well as kinetic chain deficits and movement patterns. Once these patterns have improved, the athlete should begin

sports-specific training. Faster contractions can progress loads towards the stretch-shorten cycle that forms the basis for return to sports. Early drills should include: skipping, jumping and hopping, progressing to agility tasks, direction changes, learn more sprinting and bounding movements. It is important to quantify these tasks and use a high-low-medium-load day approach in early reintroduction of high-load activities and return to sports. Also, include training specificity Terminal deoxynucleotidyl transferase when returning an athlete back to their sport, including movement assessment for optimal kinetic chain loading. Other techniques may be useful in augmenting an exercise program; however, there is little evidence for effect of passive treatments for patellar tendinopathy. Exercise, pulsed ultrasound and transverse friction massages have been compared, and exercise had the best effects in the short and long term.50 Manual therapy

techniques, including myofascial manipulation of the knee extensor muscle group, have had a positive effect on reducing pain in patellar tendinopathy patients in short-term and long-term follow-up.51 Other passive therapies, including braces and taping techniques, are often used clinically to help unload the patellar tendon, however, no evidence supports their efficacy. Passive therapies are best used to reduce symptoms in season so the athlete can continue to participate in rehabilitation and sport. Extracorporeal shockwave therapy, corticosteroid injections, platelet-rich plasma and other injections are interventions frequently used in the clinical setting, yet have limited evidence supporting their use in patellar tendinopathy. There was no benefit of extracorporeal shockwave therapy compared to placebo for in-season athletes with chronic patellar tendinopathy.