{"title":"Reliability and validity of field-based tests for assessing physical fitness in gymnasts","authors":"Jorge Salse-Batán , Silvia Varela , Adrián García-Fresneda , Carlos Ayán","doi":"10.1016/j.apunsm.2022.100397","DOIUrl":"10.1016/j.apunsm.2022.100397","url":null,"abstract":"<div><h3>Objective</h3><p>This systematic review aimed at analysing the reliability and validity of field-based tests for assessing physical fitness in gymnasts.</p></div><div><h3>Method</h3><p>Three electronic databases (PubMed, SPORTDiscus, and Scopus) were searched up to March 2022, in order to identify studies that assessed the psychometric properties of field-based physical fitness test among gymnastics.</p></div><div><h3>Results</h3><p>A total of 16 studies on several gymnastics modalities (artistics <em>n</em> = 11; rhythmic <em>n</em> = 3, artistics and rhythmic <em>n</em> = 1; aerobic <em>n</em> = 1), were analyzed. All studies reported on reliability measured through test-retest design. Validity was reported in only four studies. Regarding specific tests, the split test (ICC = 0.998), and the handstand (ICC= 1) showed the highest test-retest reliability. The greater validity values were achieved by the split test (r<sup>2</sup> = 0.52), hanging pikes test (r<sup>2</sup> = 0.86), and handstand test (r<sup>2</sup> = 0.65).</p></div><div><h3>Conclusion</h3><p>A great variety of both specific and non-specific physical fitness tests have been analyzed in the field of gymnastics. The side split test, the handstand test, the vertical jump test, the 20-m run test, the agility test, and the aerobic gymnast anaerobic test could be useful tools to assess flexibility, strength, balance, muscular power, speed, agility, and cardiorespiratory fitness in gymnasts. Further investigations analyzing absolute reliability and criterion validity are needed.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 216","pages":"Article 100397"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000190/pdfft?md5=3efb092f0757487a80ec51c5235ff7ee&pid=1-s2.0-S2666506922000190-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87889551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-10-01Epub Date: 2022-07-19DOI: 10.1016/j.apunsm.2022.100392
I. Molina , A. Muñoz , X. Linde
{"title":"Treatment of ACL injury in a professional soccer player during COVID-19 lockdown","authors":"I. Molina , A. Muñoz , X. Linde","doi":"10.1016/j.apunsm.2022.100392","DOIUrl":"10.1016/j.apunsm.2022.100392","url":null,"abstract":"<div><p>Anterior Cruciate Ligament (ACL) injuries stand out as the most severe in sports such as soccer. This study presents the rehabilitation process of a professional soccer player who suffered a total ACL tear. It details the treatment performed after the surgical intervention and all the adaptations that had to be applied in the rehabilitation process due to the lockdown period established at the beginning of the COVID-19 pandemic. During the period comprised between weeks 9 and 21 post-surgery, the rehabilitation treatment was carried out virtually, adapting the actions, work environment and equipment used. Despite the limitations it entailed, the virtual format and the adaptations in the treatment allowed the rehabilitation process to continue, fulfilling all the pre-established objectives and deadlines with a consequent satisfactory and safe return to competitive sport. After carrying out a bibliographic research, no clinical cases have been found regarding the adaptation of the rehabilitation process of an ACL reconstruction in a professional soccer player during the COVID-19 lockdown.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 216","pages":"Article 100392"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000141/pdfft?md5=39884e6f2f0ae6b2dd624f64651fca9f&pid=1-s2.0-S2666506922000141-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84995070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-10-01Epub Date: 2022-11-12DOI: 10.1016/j.apunsm.2022.100395
Aldo A. Vasquez-bonilla , Daniel Rojas-Valverde , Rafael Timon , Guillermo Olcina
{"title":"Influence of fat percentage on muscle oxygen uptake and metabolic power during repeated-sprint ability of footballers","authors":"Aldo A. Vasquez-bonilla , Daniel Rojas-Valverde , Rafael Timon , Guillermo Olcina","doi":"10.1016/j.apunsm.2022.100395","DOIUrl":"10.1016/j.apunsm.2022.100395","url":null,"abstract":"<div><p>The aim of this study was to analyse the muscle oxygen saturation (SmO<sub>2</sub>) dynamics during a repeated-sprint ability (RSA) protocol (8 sprints x 20 meters, 20 s recovery) using near-infrared spectroscopy. Twenty-five footballers were grouped according to the levels of body-fat percentage (level 1: <9%; level 2: 9.1–11.5%; and level 3: >11.6%) from the Spanish third division participated. During RSA, energy cost (EC), metabolic power (MP), speed and total time as external load were measured. Desaturation and resaturation rates and muscular oxygen extraction (▽% SmO<sub>2</sub>) of the gastrocnemius muscle, along with heart rate (HR) were used as indicators of internal load. ▽% SmO<sub>2</sub> was identified as the most sensitive variable to detect the minimal change during RSA. Footballers with a lower fat percentage (level 1) achieved a higher ▽% SmO<sub>2</sub> after the 4th sprint (Δ= –13; p= 0.001) and (Δ= 9.6; p= 0.017) vs level 2 and level 3, respectively. SmO<sub>2</sub> was related to EC (r2= 0.57 p= 0.005), MP (r2= 0.61 p= 0.003), speed (r2= 0.59 p= 0.004) and total time (r2= 0.59 p= 0.004). Therefore, SmO<sub>2</sub> was a better indicator of internal load than HR during RSA. The ▽% SmO<sub>2</sub> can be used as a parameter to explore potential differences in footballers' RSA performance. Besides, we highlighted the relevance of measuring the body-fat percentage, since it is a variable that affects performance by disturbing ▽% SmO<sub>2</sub>, altering the ability to resist repeated high-speed bouts (sprints), a critical variable in football.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 216","pages":"Article 100395"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000177/pdfft?md5=e04d5f230c692ae9dbeec5ce00121f1b&pid=1-s2.0-S2666506922000177-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84919368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-10-01Epub Date: 2022-10-22DOI: 10.1016/j.apunsm.2022.100396
Daniel Martínez-Silván , Francisco Santomé-Martínez , Angélica María Champón-Chekroun , Jorge Velázquez-Saornil , Sergio Gómez-Merino , Miquel Angel Cos-Morera , Antoni Morral-Fernández , Alfons Mascaró-Vilella , Manuel Ricis-Guerra , Fernando García-Bol , Víctor Posada-Franco , Vicente Sebastiá , Carlos Cano-Herrera , Christophe Ramírez-Parenteau
{"title":"Clinical use of percutaneous needle electrolysis in musculoskeletal injuries: A critical and systematic review of the literature","authors":"Daniel Martínez-Silván , Francisco Santomé-Martínez , Angélica María Champón-Chekroun , Jorge Velázquez-Saornil , Sergio Gómez-Merino , Miquel Angel Cos-Morera , Antoni Morral-Fernández , Alfons Mascaró-Vilella , Manuel Ricis-Guerra , Fernando García-Bol , Víctor Posada-Franco , Vicente Sebastiá , Carlos Cano-Herrera , Christophe Ramírez-Parenteau","doi":"10.1016/j.apunsm.2022.100396","DOIUrl":"10.1016/j.apunsm.2022.100396","url":null,"abstract":"<div><h3>Objective</h3><p>To review the current scientific evidence for the clinical use of percutaneous needle electrolysis (PNE) in musculoskeletal conditions.</p></div><div><h3>Methods</h3><p>A systematic electronic search was performed in biomedical databases. Only clinical studies on human subjects using PNE on musculoskeletal pathologies were included. Methodological quality and risk of bias were assessed using the methodological index for non-randomized studies (MINORS). Treatment protocols were described, and primary outcomes (pain, injury-related function, and tissue structure) were compared against other treatment modalities or control groups in short (<1 month), mid (1-3 months) and long term (>3 months).</p></div><div><h3>Results</h3><p>Twenty-one studies met eligibility criteria (14 comparative studies and 7 case series). Sixty-two percent were at moderate to high risk of bias. PNE was applied in a wide range of injury types (mostly tendon-related), and application protocols were heterogeneous in terms of dosage (intensity: 0.35-6mA; time: 9-90sec), frequency (from twice a week to once every 2 weeks) and treatment duration (1-10 weeks). PNE showed moderate effects on pain at short and mid-term compared to active exercise interventions alone and sham needling. There is limited evidence that PNE improves injury-related function compared to other treatment modalities and no evidence of tissue structure improvement after PNE application.</p></div><div><h3>Conclusion</h3><p>There is paucity of high-quality clinical studies about PNE in musculoskeletal conditions and lack of consensus about treatment indications and application protocols. Although a moderate effect on pain at short and mid-term has been documented, further research is needed.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 216","pages":"Article 100396"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000189/pdfft?md5=3abc86af529e4645d0faa4ce3b3cf6cb&pid=1-s2.0-S2666506922000189-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89454706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-07-01Epub Date: 2022-08-02DOI: 10.1016/j.apunsm.2022.100389
Ignasi de Yzaguirre i Maura , Diego Dulanto Zabala , Daniel Brotons i Cuixart , J. Antoni Gutierrez Rincon , Joan Vives i Turcó , Gonzalo Grazioli
{"title":"Physiological impact of different types of mask at rest","authors":"Ignasi de Yzaguirre i Maura , Diego Dulanto Zabala , Daniel Brotons i Cuixart , J. Antoni Gutierrez Rincon , Joan Vives i Turcó , Gonzalo Grazioli","doi":"10.1016/j.apunsm.2022.100389","DOIUrl":"10.1016/j.apunsm.2022.100389","url":null,"abstract":"<div><h3>Introduction</h3><p>Due to the mandatory use of a mask in the context of the Covid-19 pandemic, we set out to evaluate the physiological impact of hypoxia and hypercapnia generated by different masks at rest.</p></div><div><h3>Methods</h3><p>Thirty-two competitive adolescent athletes (40% female) were evaluated. Room air and intra-mask measurements were taken at rest while sitting in a chair. A spirometric study was performed and the intra-mask concentration of O2 and CO2 was evaluated, comparing 3 situations: a) Home (H): mask that the subject was wearing from home. b) Surgical (S): surgical mask. c) KN95 mask (KN95).</p></div><div><h3>Results</h3><p>The ambient air in the laboratory was: O2: 20.9% and CO2: 544 ± 67 ppm (0.05%); Intra-mask O2: H: 17.8 ± 0.72 %; S: 17.08 ± 0.62 %; KN95: 16.8 ± 0.56 %; (H vs S: ns; H vs NK95: <em>p</em> <0.001; S vs KN95: p <0.002). Intra-mask CO2: H: 1.81 ± 0.52 %; S 1.92 ± 0.35 %; KN95: 2.07 ± 0.36%; (H vs S: ns; H vs NK95: <em>p</em> <0.001; S vs KN95: <em>p</em> <0.012). CO2 levels with KN95 were lower in men 1.97 ± 0.37 % vs 2.2 ± 0.29 % than in women (<em>p</em><0.04), with a significant correlation between gender and weight (r: 0.98, p: 0.01) and height (r: 0.78, <em>p</em>: 0.01).</p></div><div><h3>Conclusions</h3><p>The KN95 mask presented a lower concentration of O2, and a higher concentration of CO2 compared to the baseline situation with the surgical masks and those home-made. There is a difference in CO2 between the sexes when the KN95 mask was used, in relation to weight and height.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 215","pages":"Article 100389"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000116/pdfft?md5=dd104ee6c9549c34477aa533ccf6e7e6&pid=1-s2.0-S2666506922000116-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89647485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-07-01Epub Date: 2022-08-03DOI: 10.1016/j.apunsm.2022.100391
Agustin Alanis, Oscar Salas, Karina Salas, Iliana Quintero, Yonny Carranza, Laura Salazar
{"title":"Playing at altitude. Performance of a Mexican professional football team at different level of altitude","authors":"Agustin Alanis, Oscar Salas, Karina Salas, Iliana Quintero, Yonny Carranza, Laura Salazar","doi":"10.1016/j.apunsm.2022.100391","DOIUrl":"10.1016/j.apunsm.2022.100391","url":null,"abstract":"<div><h3>Background</h3><p>Football is the most popular sport in the world, and matches are commonly played at different levels of altitude. As the altitude increases, the availability of oxygen decreases. The dynamics of the ball will be altered due to the decrease in air resistance. These conditions can affect the physical and/or sports performance of football players.</p><p>The objective of this study is to determine if there is a relationship between altitude and performance of a professional football team.</p></div><div><h3>Methods</h3><p>A total of 130 matches of a Mexican professional football team were analyzed. Physical performance was measured by Match Analysis®, a video and statistical analysis; sports performance was measured according to the score. Altitude was measured with Geo Elevation.</p></div><div><h3>Results</h3><p>No relationship was found between altitude and total distance covered (p=0.165), Distance in first half (p=0.441) sprints number(p=0.115) and time between sprints (p=0.237)</p><p>There was a significant increase between total distance covered during the second half (p=0.009) and mean speed on \"Low altitude' (p=0.000)</p><p>We found no relation between the altitude level and the obtained result (p=0.28) number of goals in favour (p=0.209) and against (p=0.629).</p></div><div><h3>Conclusion</h3><p>We found no relationship between the altitude level and physical and sports performance of a professional football team</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 215","pages":"Article 100391"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266650692200013X/pdfft?md5=133122de6303f5f8e98bb47371ebe0f0&pid=1-s2.0-S266650692200013X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79196654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-07-01Epub Date: 2022-06-10DOI: 10.1016/j.apunsm.2022.100381
Fernando O. Maciel , Renato Miranda , João B. Ferreira-Júnior , Thiago Goulart , Fernanda Brandão , Francisco Zacaron Werneck , Maurício G. Bara-Filho
{"title":"Analysis of different training load monitoring methods in youth women handball players","authors":"Fernando O. Maciel , Renato Miranda , João B. Ferreira-Júnior , Thiago Goulart , Fernanda Brandão , Francisco Zacaron Werneck , Maurício G. Bara-Filho","doi":"10.1016/j.apunsm.2022.100381","DOIUrl":"10.1016/j.apunsm.2022.100381","url":null,"abstract":"<div><p>This study examined the association between different methods for training load (TL) monitoring during youth handball training. Distance covered, heart rate and session rating of perceived exertion [SRPE] were recorded during 12 training sessions in 14 youth women handball athletes (16.9±1.1 years). Internal load models based on SRPE and Edwards’ Trimp were calculated. An oscillatory feature was observed for the three methods of TL assessment (SRPE: 383±159 A.U., Edwards’ Trimp: 252±71 A.U., total distance: 3997±1291 m). A large correlation was found between Edwards’ Trimp and distance covered (r=0.59). A moderate correlation was observed for Edwards’ Trimp vs. SRPE (r=0.36), and between SRPE vs. distance covered (r=0.49). Shared variances of 13–35% were observed between TL methods comparisons. The results suggest that different constructs seem to be measured by each load model. Additionally, SRPE is a simple and low-cost method that might be used for TL monitoring in handball.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 215","pages":"Article 100381"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000037/pdfft?md5=ec13c57d20f7c9111aa5f55406be55d7&pid=1-s2.0-S2666506922000037-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89417596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-07-01Epub Date: 2022-08-07DOI: 10.1016/j.apunsm.2022.100390
Franc García , Daniel Fernández , Jordi Illa , Xavier Reche , Roger Font , Marc Guitart , Francesc Pla , Joan Ramon Tarragó , Jairo Vázquez-Guerrero
{"title":"Comparing the most demanding scenarios of official matches across five different professional team sports in the same club","authors":"Franc García , Daniel Fernández , Jordi Illa , Xavier Reche , Roger Font , Marc Guitart , Francesc Pla , Joan Ramon Tarragó , Jairo Vázquez-Guerrero","doi":"10.1016/j.apunsm.2022.100390","DOIUrl":"10.1016/j.apunsm.2022.100390","url":null,"abstract":"<div><h3>Introduction</h3><p>The purpose of this study was to compare the most demanding scenarios (MDS) of match-play across five different team sports of the same club (basketball, futsal, handball, rink hockey and soccer) during five different time epochs (30, 60, 120, 180 and 300 s).</p></div><div><h3>Material and methods</h3><p>Sixty-five professional male players were monitored across 14 to 17 official matches via a local positioning system. Peak physical demands included total distance, distance, and actions >18 km·h<sup>−1</sup> and distance and number of accelerations and decelerations >2 m·s<sup>−2</sup>. One-way analysis of variance and Tukey post-hoc tests were used to test statistical significance (p <.05), whereas standardized Cohen's effect size and the respective 95% confidence intervals were calculated to detect differences between team sports.</p></div><div><h3>Results</h3><p>While soccer and rink hockey achieved the greatest MDS in total distance, and distance and number of actions >18 km·h<sup>−1</sup> during all the time epochs examined, basketball presented the highest peak values in number of accelerations and decelerations >2 m·s<sup>−2</sup> during 30-s and 60-s time epochs.</p></div><div><h3>Conclusion</h3><p>In conclusion, the MDS during competition are significantly different across team sports, which can be useful in determining the upper limit threshold for sport-specific training optimisation and return to play purposes.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 215","pages":"Article 100390"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000128/pdfft?md5=615ba2e2870d0d0544c7788ed1a22f30&pid=1-s2.0-S2666506922000128-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77590316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Apunts Sports MedicinePub Date : 2022-07-01Epub Date: 2022-07-09DOI: 10.1016/j.apunsm.2022.100386
Roberto Seijas , Alfred Ferré-Aniorte , Marta Rius , Patricia Laiz , Ramón Cugat
{"title":"Evolution of the patellar tendon size after Bone-Patelar tendon-Bone ACL reconstruction","authors":"Roberto Seijas , Alfred Ferré-Aniorte , Marta Rius , Patricia Laiz , Ramón Cugat","doi":"10.1016/j.apunsm.2022.100386","DOIUrl":"10.1016/j.apunsm.2022.100386","url":null,"abstract":"<div><h3>Introduction</h3><p>Bone-patellar tendon-bone (BPTB) autograft is the main treatment choice on complete anterior cruciate ligament (ACL) ruptures. However, high donor-site morbidity has been related to this procedure. A better understanding of the donor-site healing process could help us to decrease donor-site problems. The aim of this study is to describe the evolution of the patellar tendon size during the first year after BPTB procedure.</p></div><div><h3>Materials and methods</h3><p>42 consecutive patients underwent ACL reconstruction using BPTB technique in our facilities. We measured the tendon length, width and thickness through musculoskeletal ultrasound before and at 1, 2, 4, 6, 9 and 12 months after the operation. Tendon measurements from the contralateral unaffected tendon were used as a control group. We compared the values between injured and uninjured legs and between pre-op and post-op values.</p></div><div><h3>Results</h3><p>Tendon length decreased significantly in both legs, without any difference between legs at 12 months post-op. Tendon width and thickness of the unaffected limbs showed a tendency to stabilization, while the injured limb showed a significant increase in both values during the first 1-2 months. At 12-months post-op, patellar tendon of the injured limb was significantly wider and thicker than the unaffected contralateral limb.</p></div><div><h3>Conclusion</h3><p>Harvesting the central third of the patellar tendon during the BPTB procedure after an ACL injury leads to significant changes in the patellar tendon that can last for up to 12 months after the surgery. Further research must focus on the translation of these findings into clinical signs with longest follow-up periods.</p></div>","PeriodicalId":100113,"journal":{"name":"Apunts Sports Medicine","volume":"57 215","pages":"Article 100386"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666506922000086/pdfft?md5=3270c2430c0d03fb40b6a909daf915b0&pid=1-s2.0-S2666506922000086-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78075460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}