None listed
Conditions
Brief summary
Jumper’s knee (patellar tendinopathy) is often reported in jumping athletes like volleyball players, especially during the volleyball season. It is hard to relieve this pain in-season. In this study we will investigate the effects of two physiotherapy /rehabilitation exercise programs (isometric and isotonic exercises). It is hypothesized that both exercise programs will decrease the level of tendon pain in in-season jumping athletes with patellar tendinopathy.
Interventions
Two active intervention groups
Group 1: Isometric exercises: 4 weeks. 4x per week, 5x 45 second isometric contraction of both legs on a leg extension machine with a knee joint angle of 60 degrees. 80% Maximal Voluntary Contraction, with a 2.5% progressive overload of RM per week.
Rest period after completing both legs is 15 seconds. Total duration of exercise session including 5 minute warm up is 15 minutes.
Group 2: Isotonic exercises: 4 weeks. 4x per week, 4x 8 repetitions of isotonic contr
Two active intervention groups Group 1: Isometric exercises: 4 weeks. 4x per week, 5x 45 second isometric contraction of both legs on a leg extension machine with a knee joint angle of 60 degrees. 80% Maximal Voluntary Contraction, with a 2.5% progressive overload of RM per week. Rest period after completing both legs is 15 seconds. Total duration of exercise session including 5 minute warm up is 15 minutes. Group 2: Isotonic exercises: 4 weeks. 4x per week, 4x 8 repetitions of isotonic contractions of both legs on a leg extension machine through range of motion (three second concentric phase immediately followed by a four second eccentric phase). 80% of 8RM, with a 2.5% progressive overload of RM per week. Rest period after completing both legs is 15 seconds. Total duration of exercise session including 5 minute warm up is 15 minutes. Participants will receive (smart phone) audio instructions to listen to during their exercises. Participants will be asked to fill out an exercise diary and will be followed-up weekly at the venue of the matches of their team to improve adherence.
Sponsors
Monash University
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
16 Years to 55 Years
Healthy volunteers
No
Inclusion criteria
- Athletes currently playing jumping sports at least 3 times per week - Clinical diagnosis of patellar tendinopathy by an experienced physiotherpist -Focal patellar tendon pain at inferior or superior pole of patella - History of exercise associated knee pain at the inferior or superior pole
Exclusion criteria
- Other knee pathology - Previous patellar tendon rupture - Inflammatory disorders - Metabolic bone diseases - Type II diabetes - Familial hypercholesterolaemia - Other chronic pain conditions
Outcome results
None listed