Identifying characteristics of resistance-based therapeutic exercise interventions for Achilles tendinopathy: A scoping review

Albers, 2016, Incidence and prevalence of lower extremity tendinopathy in a Dutch general practice population: a cross sectional study, BMC Musculoskeletal Disorders, 17, 16, 10.1186/s12891-016-0885-2 Alfredson, 2003, Intratendinous glutamate levels and eccentric training in chronic Achilles tendinosis: a prospective study using microdialysis technique, Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA, 11, 196, 10.1007/s00167-003-0360-0 Alfredson, 1999, Bone mass in the calcaneus after heavy loaded eccentric calf-muscle training in recreational athletes with Chronic Achilles Tendinosis, Calcified Tissue International, 64, 450, 10.1007/PL00005827 Alfredson, 1998, Heavy-load eccentric calf muscle training for the treatment of chronic achilles tendinosis, The American Journal of Sports Medicine, 26, 360, 10.1177/03635465980260030301 2009, American college of sports medicine position stand. Progression models in resistance training for healthy adults, Medicine & Science in Sports & Exercise, 41, 687, 10.1249/MSS.0b013e3181915670 Arksey, 2005, Scoping studies: Towards a methodological framework, International Journal of Social Research Methodology: Theory and Practice, 8, 19, 10.1080/1364557032000119616 Bakkegaard, 2015, Ultrasonography as a prognostic and objective parameter in Achilles tendinopathy: A prospective observational study, European Journal of Radiology, 84, 458, 10.1016/j.ejrad.2014.11.028 Balius, 2016, A 3-arm Randomized trial for achilles tendinopathy: Eccentric training, eccentric training plus a dietary supplement containing mucopolysaccharides, or passive stretching plus a dietary supplement containing mucopolysaccharides, Current Therapeutic Research, 78, 1, 10.1016/j.curtheres.2016.11.001 Barton, 2021, Many physiotherapists lack preparedness to prescribe physical activity and exercise to people with musculoskeletal pain: A multi-national survey, Physical Therapy in Sport, 49, 98, 10.1016/j.ptsp.2021.02.002 Benito, 2016, Physiotherapy's protocol to approach the insertional achilles tendinopathy, Journal of Human Sport and Exercise, 11, 10.14198/jhse.2016.113.03 Bennie, 2020, Muscle-strengthening exercise epidemiology: a new frontier in chronic disease prevention, Sports Med Open, 6, 1, 10.1186/s40798-020-00271-w Beyer, 2015, Heavy slow resistance versus eccentric training as treatment for achilles tendinopathy: A randomized controlled trial, The American Journal of Sports Medicine, 43, 1704, 10.1177/0363546515584760 Burke, 2006, Group versus individual approach? A meta-analysis of the effectiveness of interventions to promote physical activity, Sport and Exercise Psychology Review, 2, 19, 10.53841/bpssepr.2006.2.1.13 Burke, 2008, Cohesion in exercise groups: an overview, International Review of Sport and Exercise Psychology, 1, 107, 10.1080/17509840802227065 Burton, 2021, The implementation of resistance training principles in exercise interventions for lower limb tendinopathy: A systematic review, Physical Therapy in Sport, 50, 97, 10.1016/j.ptsp.2021.04.008 Chambers, 2011, Maximizing the impact of systematic reviews in health care decision making: a systematic scoping review of knowledge-translation resources, The Milbank Quarterly, 89, 131, 10.1111/j.1468-0009.2011.00622.x Chester, 2008, Eccentric calf muscle training compared with therapeutic ultrasound for chronic Achilles tendon pain--a pilot study, Manual Therapy, 13, 484, 10.1016/j.math.2007.05.014 Clifford, 2020, Effectiveness of isometric exercise in the management of tendinopathy: a systematic review and meta-analysis of randomised trials, BMJ Open Sport Exerc Med, 6, 10.1136/bmjsem-2020-000760 Cohen, 1968, Weighted kappa: Nominal scale agreement provision for scaled disagreement or partial credit, Psychological Bulletin, 70, 213, 10.1037/h0026256 Cook, 2009, Is tendon pathology a continuum? A pathology model to explain the clinical presentation of load-induced tendinopathy, British Journal of Sports Medicine, 43, 409, 10.1136/bjsm.2008.051193 Crill, 2014, Plantar flexor muscle architecture changes as a result of eccentric exercise in patients with Achilles tendinosis, Foot & Ankle Specialist, 7, 460, 10.1177/1938640014539812 Croisier, 2007, An isokinetic eccentric programme for the management of chronic lateral epicondylar tendinopathy, British Journal of Sports Medicine, 41, 269, 10.1136/bjsm.2006.033324 Croisier, 2001, Treatment of recurrent tendinitis by isokinetic eccentric exercises, Isokinetics and Exercise Science, 9, 133, 10.3233/IES-2001-0077 Cuddeford, 2018, What maximum ankle torque is appropriate for training patients with non-insertional Achilles Tendinopathy?, Orthopaedic Physical Therapy Practice, 30, 543 Daudt, 2013, Enhancing the scoping study methodology: A large, inter-professional team's experience with Arksey and O'malley's framework, BMC Medical Research Methodology, 13, 10.1186/1471-2288-13-48 de Vos, 2012, Tendon structure’s lack of relation to clinical outcome after eccentric exercises in chronic midportion Achilles tendinopathy, Journal of Sport Rehabilitation, 21, 34, 10.1123/jsr.21.1.34 Demir Benli, 2022, A comparison between the efficacy of eccentric exercise and extracorporeal shock wave therapy on tendon thickness, vascularity, and elasticity in achilles tendinopathy: A randomized controlled trial, Turk J Phys Med Rehabil, 68, 372, 10.5606/tftrd.2022.8113 Fahlström, 2003, Chronic Achilles tendon pain treated with eccentric calf-muscle training, Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA, 11, 327, 10.1007/s00167-003-0418-z Gärdin, 2010, The long-term clinical and MRI results following eccentric calf muscle training in chronic Achilles tendinosis, Skeletal Radiology, 39, 435, 10.1007/s00256-009-0798-3 Gatz, 2020, Eccentric and isometric exercises in Achilles tendinopathy evaluated by the VISA-A score and shear wave elastography, Sports Health, 12, 373, 10.1177/1941738119893996 Gatz, 2020, Effect of a 12-week eccentric and isometric training in Achilles tendinopathy on the fastrocnemius muscle: An ultrasound shear wave elastography study, Muscle Ligaments and Tendons Journal, 10, 92, 10.32098/mltj.01.2020.12 Gearing, 2011, Major ingredients of fidelity: A review and scientific guide to improving quality of intervention research implementation, Clinical Psychology Review, 31, 79, 10.1016/j.cpr.2010.09.007 Girgis, 2020, Physical therapy for tendinopathy: An umbrella review of systematic reviews and meta-analyses, Physical Therapy in Sport, 46 30 Grimshaw, 2012, Knowledge translation of research findings, Implementation Science, 7, 50, 10.1186/1748-5908-7-50 Grol, 2001, Successes and failures in the implementation of evidence-based guidelines for clinical practice, Medical Care, 39, II46, 10.1097/00005650-200108002-00003 Habets, 2021, No difference in clinical effects when comparing Alfredson eccentric and Silbernagel combined concentric-eccentric loading in achilles tendinopathy: A Randomized controlled trial, Orthop J Sports Med, 9, 10.1177/23259671211031254 Habets, 2015, Eccentric exercise training in chronic mid-portion achilles tendinopathy: A systematic review on different protocols, Scandinavian Journal of Medicine & Science in Sports, 25, 3, 10.1111/sms.12208 Habets, 2017, Alfredson versus Silbernagel exercise therapy in chronic midportion Achilles tendinopathy: study protocol for a randomized controlled trial, BMC Musculoskeletal Disorders, 18, 296, 10.1186/s12891-017-1656-4 Hasani, 2021, LOAD-Intensity and time-under-tension of exercises for men who have achilles tendinopathy (the LOADIT trial): a randomised feasibility trial, BMC Sports Sci Med Rehabil, 13, 1, 10.1186/s13102-021-00279-z Hasani, 2020, Efficacy of different load intensity and time-under-tension calf loading protocols for Achilles tendinopathy (the LOADIT trial): Protocol for a randomised pilot study, Pilot and Feasibility Studies, 6, 1, 10.1186/s40814-020-00639-5 Hasani, 2021, Telehealth sounds a bit challenging, but it has potential: participant and physiotherapist experiences of gym-based exercise intervention for Achilles tendinopathy monitored via telehealth, BMC Musculoskeletal Disorders, 22, 10.1186/s12891-020-03907-w Head, 2019, The efficacy of loading programmes for improving patient‐reported outcomes in chronic midportion achilles tendinopathy: A systematic review, Musculoskeletal Care, 17, 283, 10.1002/msc.1428 Herrington, 2007, The role of eccentric training in the management of Achilles tendinopathy: A pilot study, Physical Therapy in Sport, 8, 191, 10.1016/j.ptsp.2007.07.001 Hoffmann, 2014, Better reporting of interventions: Template for intervention description and replication (TIDieR) checklist and guide, BMJ, 348, 10.1136/bmj.g1687 Hong, 2018, The Mixed Methods Appraisal Tool (MMAT) version 2018 for information professionals and researchers, Education for Information, 34, 285, 10.3233/EFI-180221 Horstmann, 2013, Whole-body vibration versus eccentric training or a wait-and-see approach for chronic Achilles tendinopathy: a randomized clinical trial, The Journal of Orthopaedic and Sports Physical Therapy, 43, 794, 10.2519/jospt.2013.4762 Jayaseelan, 2017, Manual therapy and eccentric exercise in the management of Achilles tendinopathy, The Journal of Manual & Manipulative Therapy, 25, 106, 10.1080/10669817.2016.1183289 Jayaseelan, 2019, Eccentric exercise for achilles tendinopathy: A narrative Review and clinical decision-making considerations, J Funct Morphol Kinesiol, 4, 34, 10.3390/jfmk4020034 Johannsen, 2018, 10-year follow-up after standardised treatment for Achilles tendinopathy, BMJ Open Sport & Exercise Medicine, 4, 10.1136/bmjsem-2018-000415 Jonsson, 2008, New regimen for eccentric calf-muscle training in patients with chronic insertional Achilles tendinopathy: results of a pilot study, British Journal of Sports Medicine, 42, 746, 10.1136/bjsm.2007.039545 Kearney, 2013, Achilles tendinopathy management: A pilot randomised controlled trial comparing platelet-richplasma injection with an eccentric loading programme, Bone & Joint Research, 2, 227, 10.1302/2046-3758.210.2000200 Kedia, 2014, The effects of conventional physical therapy and eccentric strengthening for insertional achilles tendinopathy, International Journal of Sports Physical Therapy, 9, 488 Kingma, 2007, Eccentric overload training in patients with chronic achilles tendinopathy: a systematic review, British Journal of Sports Medicine, 41, 3, 10.1136/bjsm.2006.030916 Knobloch, 2007, Eccentric training in Achilles tendinopathy: is it harmful to tendon microcirculation?, British Journal of Sports Medicine, 41, 10.1136/bjsm.2006.030437 Knobloch, 2007, Eccentric training decreases paratendon capillary blood flow and preserves paratendon oxygen saturation in chronic achilles tendinopathy, The Journal of Orthopaedic and Sports Physical Therapy, 37, 269, 10.2519/jospt.2007.2296 Knobloch, 2010, Gender and eccentric training in Achilles mid-portion tendinopathy, Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA, 18, 648, 10.1007/s00167-009-1006-7 Kongsgaard, 2009, Corticosteroid injections, eccentric decline squat training and heavy slow resistance training in patellar tendinopathy, Scandinavian Journal of Medicine & Science in Sports, 19, 790, 10.1111/j.1600-0838.2009.00949.x Krogh, 2022, An isometric and functionally based 4-stage progressive loading program in achilles tendinopathy: A 12-month pilot study, Transl Sports Med, 2022, 1, 10.1155/2022/6268590 Kujala, 2005, Cumulative incidence of achilles tendon rupture and tendinopathy in male former elite athletes, Clinical Journal of Sport Medicine, 15, 133, 10.1097/01.jsm.0000165347.55638.23 Lagas, 2020, Incidence of achilles tendinopathy and associated risk factors in recreational runners: A large prospective cohort study, Journal of Science and Medicine in Sport, 23, 448, 10.1016/j.jsams.2019.12.013 Langberg, 2007, Eccentric rehabilitation exercise increases peritendinous type I collagen synthesis in humans with Achilles tendinosis, Scandinavian Journal of Medicine & Science in Sports, 17, 61 Levac, 2010, Scoping studies: Advancing the methodology, Implementation Science, 5, 69, 10.1186/1748-5908-5-69 Li, 2019, The diagnosis and treatment of familial hyperlipidemia combined with midsubstance Achilles tendinopathy in a young woman: a clinical case report, International Journal of Clinical and Experimental Medicine, 12, 13018 Lohrer, 2016, Surgical treatment for achilles tendinopathy - a systematic review, BMC Musculoskeletal Disorders, 17, 10.1186/s12891-016-1061-4 Lopes, 2012, What are the main running-Related musculoskeletal injuries?, Sports Medicine, 42, 891, 10.1007/BF03262301 Maffulli, 2008, Eccentric calf muscle training in athletic patients with Achilles tendinopathy, Disability and Rehabilitation, 30, 1677, 10.1080/09638280701786427 Mafi, 2001, Superior short-term results with eccentric calf muscle training compared to concentric training in a randomized prospective multicenter study on patients with chronic Achilles tendinosis, Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA, 9, 42, 10.1007/s001670000148 Magnussen, 2009, Nonoperative treatment of midportion achilles tendinopathy: A systematic review, Clinical Journal of Sport Medicine, 19, 54, 10.1097/JSM.0b013e31818ef090 Malliaras, 2017, Understanding mechanisms to improve exercise interventions in tendinopathy, Physical Therapy in Sport, 27, 50, 10.1016/j.ptsp.2016.12.006 Malliaras, 2022, Physiotherapy management of Achilles tendinopathy, Journal of Physiotherapy, 10.1016/j.jphys.2022.09.010 Malliaras, 2013, Achilles and patellar tendinopathy loading programmes: A systematic review comparing clinical outcomes and identifying potential mechanisms for effectiveness, Sports Medicine, 43 267 Mallows, 2021, Patient perspectives on participation in exercise-based rehabilitation for achilles tendinopathy: A qualitative study, Musculoskelet Sci Pract, 56 Mansur, 2019, Shockwave therapy associated with eccentric strengthening for achilles insertional tendinopathy: A prospective study, Foot & Ankle Specialist, 12, 540, 10.1177/1938640019826673 Martin, 2018, Achilles pain, stiffness, and muscle power deficits: midportion achilles tendinopathy revision 2018, Journal of Orthopaedic & Sports Physical Therapy, 48, A1, 10.2519/jospt.2018.0302 Masood, 2014, Effects of 12-wk eccentric calf muscle training on muscle-tendon glucose uptake and SEMG in patients with chronic Achilles tendon pain, Journal of Applied Physiology (Bethesda, Md.: 1985), 117, 105 Mc Auliffe, 2021, Participant characteristics are poorly reported in exercise trials in tendinopathy: A systematic review, Physical Therapy in Sport, 48, 43, 10.1016/j.ptsp.2020.12.012 McAuliffe, 2019, Altered strength profile in achilles tendinopathy: A systematic review and meta-analysis, Journal of Athletic Training, 54, 889, 10.4085/1062-6050-43-18 McGlynn, 2003, The quality of health care delivered to adults in the United States, New England Journal of Medicine, 348, 2635, 10.1056/NEJMsa022615 McGowan, 2016, PRESS peer Review of electronic search strategies: 2015 guideline statement, Journal of Clinical Epidemiology, 75, 40, 10.1016/j.jclinepi.2016.01.021 McHugh, 2012, Interrater reliability: The kappa statistic, Biochemia Medica, 22, 276, 10.11613/BM.2012.031 McKay, 2016, ‘Compliance’ versus ‘adherence’ in sport injury prevention: why definition matters, British Journal of Sports Medicine, 50, 382, 10.1136/bjsports-2015-095192 Meade, 2019, Behaviour change techniques associated with adherence to prescribed exercise in patients with persistent musculoskeletal pain: Systematic review, British Journal of Health Psychology, 24, 10, 10.1111/bjhp.12324 Merry, 2021 Merry, 2022, Foundational principles and adaptation of the healthy and pathological achilles tendon in Response to Resistance exercise: A narrative Review and clinical implications, Journal of Clinical Medicine, 11, 4722, 10.3390/jcm11164722 Millar, 2021, Tendinopathy, Nature Reviews Disease Primers, 7, 1, 10.1038/s41572-020-00234-1 Mitham, 2022, Management of recent onset tendon‐related pain in a primary contact setting: A survey of practice, Musculoskeletal Care, 20, 86, 10.1002/msc.1556 Morris, 2011, The answer is 17 years, what is the question: understanding time lags in translational research, Journal of the Royal Society of Medicine, 104, 510, 10.1258/jrsm.2011.110180 Murphy, 2018, Evaluating the progress of mid-portion achilles tendinopathy during rehabilitation: A review of outcome measures for muscle structure and function, tendon structure, and neural and pain associated mechanisms, Int J Sports Phys Ther, 13, 537, 10.26603/ijspt20180537 Murphy, 2018, Rate of improvement of pain and function in mid-portion achilles tendinopathy with loading protocols: a systematic review and longitudinal meta-analysis, Sports Medicine, 48, 1875, 10.1007/s40279-018-0932-2 Nielsen, 2014, A prospective study on time to recovery in 254 injured novice runners, PLoS One, 9, 10.1371/journal.pone.0099877 Niesen-Vertommen, 1992, The effect of eccentric versus concentric exercise in the management of Achilles tendonitis, Clinical Journal of Sport Medicine, 2, 109, 10.1097/00042752-199204000-00006 Nørregaard, 2007, Eccentric exercise in treatment of Achilles tendinopathy, Scandinavian Journal of Medicine and Science in Sports, 17, 133 2020 Öhberg, 2004, Effects on neovascularisation behind the good results with eccentric training in chronic mid-portion Achilles tendinosis?, Knee Surgery, Sports Traumatology, Arthroscopy, 12, 465, 10.1007/s00167-004-0494-8 Park, 2022, Clinical impact of metabolic syndrome on eccentric exercises for chronic insertional achilles tendinopathy, The Journal of Foot & Ankle Surgery, 61, 726, 10.1053/j.jfas.2021.03.020 Pavone, 2019, Conservative treatment of chronic achilles tendinopathy: a systematic review, Journal of Functional Morphology and Kinesiology, 4 46 Petersen, 2007, Chronic Achilles tendinopathy: a prospective randomized study comparing the therapeutic effect of eccentric training, the AirHeel brace, and a combination of both, The American Journal of Sports Medicine, 35, 1659, 10.1177/0363546507303558 Phillips, 2010, Uncomplicated resistance training and health-related outcomes: evidence for a public health mandate, Current Sports Medicine Reports, 9, 208, 10.1249/JSR.0b013e3181e7da73 Rabusin, 2019, Efficacy of heel lifts versus calf muscle eccentric exercise for mid-portion Achilles tendinopathy (the HEALTHY trial): Study protocol for a randomised trial, Journal of Foot and Ankle Research, 12, 20, 10.1186/s13047-019-0325-2 Rabusin, 2021, Efficacy of heel lifts versus calf muscle eccentric exercise for mid-portion Achilles tendinopathy (HEALTHY): a randomised trial, British Journal of Sports Medicine, 55, 486, 10.1136/bjsports-2019-101776 Ram, 2013, The limited effectiveness of a home-based eccentric training for treatment of Achilles tendinopathy, Clinical and Investigative Medicine. Medecine Clinique et Experimentale, 36, E197, 10.25011/cim.v36i4.19953 Riel, 2019, Prevalence and incidence rate of lower-extremity tendinopathies in a Danish general practice: a registry-based study, BMC Musculoskeletal Disorders, 20, 239, 10.1186/s12891-019-2629-6 Rio, 2019, ICON PART-T 2019-international scientific tendinopathy symposium consensus: recommended standards for reporting participant characteristics in tendinopathy research (PART-T), British Journal of Sports Medicine, 54, 627, 10.1136/bjsports-2019-100957 Robinson, 2001, The VISA-A questionnaire: A valid and reliable index of the clinical severity of achilles tendinopathy, British Journal of Sports Medicine, 35, 335, 10.1136/bjsm.35.5.335 Rompe, 2008, Eccentric loading compared with shock wave treatment for chronic insertional achilles tendinopathy. A randomized, controlled trial, The Journal of Bone and Joint Surgery. American Volume, 90, 52, 10.2106/JBJS.F.01494 Rompe, 2007, Eccentric loading, shock-wave treatment, or a wait-and-see policy for tendinopathy of the main body of tendo Achillis: a randomized controlled trial, The American Journal of Sports Medicine, 35, 374, 10.1177/0363546506295940 Roos, 2004, Clinical improvement after 6 weeks of eccentric exercise in patients with mid-portion Achilles tendinopathy - A randomized trial with 1-year follow-up, Scandinavian Journal of Medicine and Science in Sports, 14, 286, 10.1111/j.1600-0838.2004.378.x Sancho, 2019, Education and exercise supplemented by a pain-guided hopping intervention for male recreational runners with midportion achilles tendinopathy: a single cohort feasibility study, Physical Therapy in Sport, 40, 107, 10.1016/j.ptsp.2019.08.007 Sayana, 2007, Eccentric calf muscle training in non-athletic patients with Achilles tendinopathy, Journal of Science and Medicine in Sport, 10, 52, 10.1016/j.jsams.2006.05.008 Scott, 2020, ICON 2019: International scientific tendinopathy symposium consensus: clinical terminology, British Journal of Sports Medicine, 54, 260, 10.1136/bjsports-2019-100885 Shalabi, 2004, Eccentric training of the gastrocnemius-soleus complex ion chronic achilles tendinopathy results in decreased tendon volume and intratendinous signal as evaluated by MRI, American Journal of Sports Medicine, 32, 1286, 10.1177/0363546504263148 Silbernagel, 2011, The majority of patients with Achilles tendinopathy recover fully when treated with exercise alone: A 5-year follow-up, American Journal of Sports Medicine, 39, 607, 10.1177/0363546510384789 Silbernagel, 2020, Current clinical concepts: conservative management of achilles tendinopathy, Journal of Athletic Training, 55, 438, 10.4085/1062-6050-356-19 Silbernagel, 2007, Continued sports activity, using a pain-monitoring model, during rehabilitation in patients with achilles tendinopathy: a randomized controlled study, The American Journal of Sports Medicine, 35, 897, 10.1177/0363546506298279 Silbernagel, 2001, Eccentric overload training for patients with chronic Achilles tendon pain - a randomised controlled study with reliability testing of the evaluation methods, Scandinavian Journal of Medicine & Science in Sports, 11, 197, 10.1034/j.1600-0838.2001.110402.x Sleeswijk Visser, 2021, Impact of chronic Achilles tendinopathy on health-related quality of life, work performance, healthcare utilisation and costs, BMJ Open Sport Exerc Med, 7, 10.1136/bmjsem-2020-001023 Stanish, 1986, Eccentric exercise in chronic tendinitis, Clinical Orthopaedics and Related Research, 208, 65, 10.1097/00003086-198607000-00014 Stasinopoulos, 2013, Comparing two eccentric exercise programmes for the management of Achilles tendinopathy. A pilot trial, Journal of Bodywork and Movement Therapies, 17, 309, 10.1016/j.jbmt.2012.11.003 Stefansson, 2019, Using pressure massage for Achilles tendinopathy: A single-blind, randomized controlled trial comparing a novel treatment versus an eccentric exercise protocol, Orthopaedic Journal of Sports Medicine, 7, 10.1177/2325967119834284 Stevens, 2014, Effectiveness of the alfredson protocol compared with a lower repetition-volume protocol for midportion achilles tendinopathy: A randomized controlled trial, Journal of Orthopaedic and Sports Physical Therapy, 44, 59, 10.2519/jospt.2014.4720 Sussmilch-Leitch, 2012, Physical therapies for Achilles tendinopathy: systematic review and meta-analysis, Journal of Foot and Ankle Research, 5 15 Tricco, 2018, PRISMA extension for scoping reviews (PRISMA-ScR): checklist and explanation, Annals of Internal Medicine, 169 467 Tsehaie, 2017, Value of quantitative MRI parameters in predicting and evaluating clinical outcome in conservatively treated patients with chronic midportion Achilles tendinopathy: A prospective study, Journal of Science and Medicine in Sport, 20, 633, 10.1016/j.jsams.2017.01.234 Tumilty, 2016, Photobiomodulation and eccentric exercise for Achilles tendinopathy: a randomized controlled trial, Lasers in Medical Science, 31, 127, 10.1007/s10103-015-1840-4 Turner, 2020, ‘it's disappointing and it's pretty frustrating, because it feels like it's something that will never go away.’ A qualitative study exploring individuals' beliefs and experiences of Achilles tendinopathy, PLoS One, 15, 10.1371/journal.pone.0233459 Verrall, 2011, Chronic Achilles tendinopathy treated with eccentric stretching program, Foot & Ankle International, 32, 843, 10.3113/FAI.2011.0843 Vicenzino, 2020, ICON 2019 - international Scientific tendinopathy Symposium Consensus: There are nine core health-related domains for tendinopathy (CORE DOMAINS): Delphi study of healthcare professionals and patients, British Journal of Sports Medicine, 54, 444, 10.1136/bjsports-2019-100894 de Vos, 2021, Dutch multidisciplinary guideline on Achilles tendinopathy, British Journal of Sports Medicine, 55, 1125, 10.1136/bjsports-2020-103867 von Wehren, 2019, Injection with autologous conditioned serum has better clinical results than eccentric training for chronic Achilles tendinopathy, Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA, 27, 2744, 10.1007/s00167-019-05465-8 Waugh, 2018, Impact of rest duration on Achilles tendon structure and function following isometric training, Scandinavian Journal of Medicine & Science in Sports, 28, 436, 10.1111/sms.12930 Wei, 2017, Comparison of clinical efficacy among endoscopy-assisted radio-frequency ablation, extracorporeal shockwaves, and eccentric exercises in treatment of insertional Achilles tendinosis, Journal of the American Podiatric Medical Association, 107, 11, 10.7547/14-146 Wetke, 2015, Achilles tendinopathy: A prospective study on the effect of active rehabilitation and steroid injections in a clinical setting, Scandinavian Journal of Medicine & Science in Sports, 25, e392, 10.1111/sms.12326 Woodley, 2007, Chronic tendinopathy: effectiveness of eccentric exercise, British Journal of Sports Medicine, 41, 188, 10.1136/bjsm.2006.029769 Yelland, 2011, Prolotherapy injections and eccentric loading exercises for painful Achilles tendinosis: a randomised trial, British Journal of Sports Medicine, 45, 421, 10.1136/bjsm.2009.057968 Yu, 2013, Effect of eccentric strengthening on pain, muscle strength, endurance, and functional fitness factors in male patients with achilles tendinopathy, American Journal of Physical Medicine & Rehabilitation, 92, 68, 10.1097/PHM.0b013e31826eda63