Purpose: The aim of this pilot study was to analyze the potential financial loss and a range of potential risk factors for hamstring muscle injuries in elite Brazilian soccer.
Methods: Thirty-four male players (age: 25 ± 6 years; stature: 180 ± 8 cm; body mass: 78 ± 9 kg; minutes played in matches: 2243 ± 1423 min) from an elite professional soccer club were monitored during a 12-month season. Muscle injury was identified by magnetic resonance imaging and the severity was defined according to the number of days away: minimal (1-3 days), mild (4-7 days), moderate (8-28 days), severe (>28 days). Potential financial loss due to the team's under achievements was determined. Dorsiflexion range of motion, eccentric knee flexor strength and isokinetic tests were performed during the pre-season. Association between dependent variables and the occurrence of injury was evaluated.
Results: Nine hamstring muscle injuries with moderate severity were found in 8 athletes. Recovery time was 22 days off the field on average. Potential financial loss was $-43.2 million USD and earnings on merit money was 21%. Previous injury, increased flexor deficit 60° /sec and increased flexor fatigue index 300°/sec were all associated with a greater chance of hamstring muscle injury. Ankle dorsiflexion range of motion was significantly lower in the injured group (35.6 ± 3° vs. 39.1 ± 4.9°; = 0.017, effect size = -0.74).
Conclusion: High financial burden was found in elite Brazilian soccer during one full season. Injured athletes had high hamstring fatigue index, knee flexor strength deficit, ankle range of motion restriction and previous hamstring muscle injury when compared to non-injured athletes. Therefore, preventive approaches in professional soccer players with previous hamstring injuries should be a priority.
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http://dx.doi.org/10.3389/fspor.2024.1360452 | DOI Listing |
J Cell Sci
December 2024
Institute of Sports Medicine Copenhagen, Department of Orthopaedic Surgery, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark.
The myotendinous junction (MTJ) is a weak link in the musculoskeletal system. Here, we isolated the tips of single myofibres from healthy human hamstring muscles for confocal microscopy (n=6) and RNAscope in situ hybridisation (n=6) to gain insight into the profiles of cells and myonuclei in this region, in a fibre type manner. A marked presence of mononuclear cells was observed coating the myofibre tips (confirmed by serial block face scanning electron microscopy and cryosection immunofluorescence), with higher numbers for type I (median 29; range 16-63) than type II (16; 9-23) myofibres (p<0.
View Article and Find Full Text PDFBMC Musculoskelet Disord
December 2024
Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Tokat Gaziosmanpaşa University, Taşlıçiftlik Campus, Tokat, 60250, Türkiye.
Background: Soft tissue techniques are frequently used to treat musculoskeletal disorders. Releasing the muscles through intervention from remote areas is especially important in cases where the muscles are sensitive, inaccessible or cannot be positioned appropriately. This study aimed to examine the effect of instrument-assisted soft tissue mobilization (IASTM) on hamstring flexibility via the fascial chain.
View Article and Find Full Text PDFInt J Yoga Therap
December 2024
Population Health Sciences, UT Health San Antonio, Texas.
Yoga is recognized as a complementary practice that improves physical, mental, and spiritual health in survivors of cancer. The present study assessed associations between a holistic approach and physical function for 30 survivors of cancer in south Texas. Cancer survivors (86% female) of diverse backgrounds (62% underrepresented minorities) performed a battery of physical function tests, including a 6-minute walk test, to assess cardiorespiratory function, isometric shoulder and elbow-flexor strength, dominant-arm grip strength, dominant-arm shoulder range of motion via inclinometer, sit-and-reach test to assess trunk and lower-extremity flexibility, and a 30-second sit-to-stand test to assess lower-extremity endurance.
View Article and Find Full Text PDFJ Orthop Traumatol
December 2024
Department of Orthopedics, Shanghai Sixth People's Hospital, Jinshan Branch, Shanghai, 201599, China.
Background: Quadriceps tendon (QT), bone-patellar tendon-bone (BPTB), and hamstring tendon (HT) autografts are widely used for anterior cruciate ligament reconstruction (ACLR), but the optimal autograft choice remains controversial. This study assessed the treatment effects of QT versus BPTB and HT autografts for ACLR.
Methods: The PubMed, Embase, and Cochrane Library databases were systematically searched for eligible studies published from inception until July 2022.
Rehabil Res Pract
December 2024
Department of Physical Therapy, Kean University, Union, New Jersey 07083, USA.
Handheld dynamometers provide an accurate measurement of muscle strength and have been shown to have good interrater reliability. The proximal stabilization and fulcrum are two methods of manual muscle testing; however, there is uncertainty about which method may be better for obtaining muscle strength measures. The purposes were to determine if there was a difference in hamstring strength and to determine the interrater reliability of DPT students using a handheld dynamometer when comparing the proximal stabilization and the fulcrum methods.
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