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The phase angle cut-off point capable of discriminating hemodialysis patients with reduced exercise tolerance: a cross-sectional study
ConclusionThe cut-off point of 3.73 ° for the PhA is sensitive and specific to discriminate HD patients with reduced exercise tolerance.Trial registrationThis study was registered in the Clinical Trials database (no. NCT03779126, date of first registration 19/12/2018). (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - February 2, 2024 Category: Sports Medicine Source Type: research

Effects of a randomized-controlled and online-supported physical activity intervention on exercise capacity, fatigue and health related quality of life in patients with post-COVID-19 syndrome
ConclusionsOur 3-month intervention seems appropriate for patients with moderate fatigue, whereas those with more severe fatigue appear to be too restricted with respect to their mental or physical health status to perform exercise at a level which is sufficient to improve markers of physical performance.Trial registrationGerman Clinical Trials Register (registration trial number: DRKS00026245) on September 2 2021. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - February 2, 2024 Category: Sports Medicine Source Type: research

Monitoring modifiable injury risk factors over an in-season mesocycle in semi-professional female field hockey players
ConclusionIncrements in isometric muscle strength and fluctuations in ROM values and vertical jumping capacity are reported over an in-season mesocycle (i.e., 4 months of the competitive season). This information can be used to target recovery strategies to make them more efficient. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 31, 2024 Category: Sports Medicine Source Type: research

Recreational cycling provides greater satisfaction and flow in an immersive virtual environment than in real life
ConclusionsThe research is the first attempt to directly compare the sense of satisfaction and flow when practicing cycling in RL and in nIVR and IVR. The greater attractiveness and higher level of flow during PA in IVR compared to a similar traditional form of PA in RL, found on the basis of the conducted research, should prompt reflection by both those involved in planning and promoting PA, as well as the creators of active video games (AVGs). Due to the great attractiveness of PA in IVR and the constant, dynamic development of immersive information technologies, virtual training may, in the near future, become not only ...
Source: BMC Sports Science, Medicine and Rehabilitation - January 30, 2024 Category: Sports Medicine Source Type: research

A 6-month exercise intervention clinical trial in women: effects of physical activity on multi-omics biomarkers and health during the first wave of COVID-19 in Korea
ConclusionsOur results may suggest that exercise improves health through changes in biomarkers at multi-omics levels. However, reduced PA due to COVID-19 can adversely affect health, emphasizing the necessity for sustained exercise and support for home-based fitness to maintain health.Trial RegistrationThe trial is retrospectively registered on ClinicalTrials.gov (NCT05927675; June 30, 2023). (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 29, 2024 Category: Sports Medicine Source Type: research

A novel comparative study of NNAR approach with linear stochastic time series models in predicting tennis player's performance
ConclusionIn conclusion, this study highlights the significance of incorporating time as a factor when predicting player performance in tennis. It emphasizes the potential benefits of using the NNAR model for forecasting future player standings in matches. The findings suggest that the NNAR model is a recommended approach compared to conventional models like ARIMA, ETS, and TBATS. By considering time as a crucial factor and employing the NNAR model, both tennis players and sports analysts can make more accurate predictions about player performance. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 25, 2024 Category: Sports Medicine Source Type: research

Exploring a holistic training program on tactical behavior and psychological components of elite soccer players throughout competition season: a pilot study
This study aimed to assess the effects of a training program, considering an ecological/holistic perspective, on both tactical behavior (i.e., principles of play; PP) and psychological aspects (i.e., emotional, and cognitive components) in elite soccer teams consisting of players from the U23 and U21 age groups. The participants were 46 players from the under U-23 and U-21 teams from the same club and the first division of Argentina. A quasi-experimental design was examined after five weeks of intervention through integrated training tasks, where psychological factors were used for the development of the tactical principle...
Source: BMC Sports Science, Medicine and Rehabilitation - January 22, 2024 Category: Sports Medicine Source Type: research

Kitesurfing and snowkiting injuries in Norway: a retrospective study
ConclusionsSerious injuries occured during kiteboarding. The majority of kiteboarders reported operator error or lack of experience as the cause of their accident. Prior to kiteboarding, a course highlighting the importance in using helmet for snowkiting and both helmet and life vest in kitesurfing, should be mandatory. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 22, 2024 Category: Sports Medicine Source Type: research

A systematic review of the relationship between muscle oxygen dynamics and energy rich phosphates. Can NIRS help?
ConclusionArterial occlusion and exercise intensity might be important factors to control if NIRS application should be used to examine energetics. However, more research needs to be conducted without arterial occlusion and with high-intensity exercises to support the applicability of NIRS and provide an agreement level in the concurrent course of muscle oxygen kinetics and muscle energetics.Trial registrationhttps://osf.io/py32n/.Key points1. NIRS derived measures of muscle oxygenation agree with gold-standard measures of high energy phosphates when assessed in an appropriate protocol setting.2. At rest when applying the ...
Source: BMC Sports Science, Medicine and Rehabilitation - January 20, 2024 Category: Sports Medicine Source Type: research

Effectiveness of an 11-week exercise intervention for patients with hip or knee osteoarthritis: results of a quasi-experimental pragmatic trial
ConclusionsThis trial demonstrated short-, mid- and long-term superiority of exercise versus control. However, differences were smaller than those reported in previous efficacy trials, raising questions regarding clinical importance. Responder analysis will follow to identify possible predictors for patient responsiveness on an individual level. Further studies should investigate the frequency and reasons for joint replacement following exercise therapy.Trial registrationGerman Clinical Trial Register (DRKS00009251). Registered 10 September 2015. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 20, 2024 Category: Sports Medicine Source Type: research

Effects of caffeine supplementation on anaerobic power and muscle activity in youth athletes
This study aimed to investigate the effects of caffeine ingestion on anaerobic performance and muscle activity in young athletes. In this randomized, double-blind, and placebo-controlled study, ten highly trained male post-puberal futsal players aged 15.9 ± 1.2 years conducted two laboratory sessions. Athletes performed the Wingate test 60 min after ingestion of caffeine (CAF, 6 mg/kg body mass) or placebo (PL, dextrose) (blinded administration). Peak power, mean power, and the fatigue index were assessed. During the performance of the Wingat e test, electromyographic (EMG) data were recorded from selected lower li...
Source: BMC Sports Science, Medicine and Rehabilitation - January 19, 2024 Category: Sports Medicine Source Type: research

Comparison of immediate versus optional delayed surgical repair for treatment of acute anterior cruciate ligament injury through a parallel, multicentric, pragmatic randomized controlled trial – IODA trial
DiscussionThis large RCT will assess the clinical effectiveness of both surgical and conservative treatment. In addition, it will be the first study that provides insights into which patient-specific factors predict successful outcomes after conservative treatment of ACL injuries. These results will be the first step toward early patient identification regarding treatment decisions. This is urgently needed to avoid (1) delayed surgeries and prolonged rehabilitation and (2) unnecessary surgeries.Trial registrationthis trial was registered on ClinicalTrials.gov (NCT05747079) on 10/02/2023. (Source: BMC Sports Science, Medici...
Source: BMC Sports Science, Medicine and Rehabilitation - January 18, 2024 Category: Sports Medicine Source Type: research

Does video assistant referee technology change the magnitude and direction of home advantages and referee bias? A proof-of-concept study
ConclusionsAlthough this study shows that VAR does not significantly impact the HA and referee bias of football matches, nevertheless, teams should be more aware that bias is reduced when playing away. In addition, this study offers some practical applications that can help football players, coaches, and match officials better understand VAR technology ’s effects on HA and referee bias. (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 18, 2024 Category: Sports Medicine Source Type: research

Physical performance determinants in competitive youth swimmers: a systematic review
ConclusionsFindings of this review suggest that greater levels of muscle strength, muscle power and lean body mass are favourable in swimming performance, with muscle strength and muscle power particularly beneficial for start and turn performance. Anaerobic and aerobic metabolism measures were good determinants of swimming performance, with middle- and long-distance events more influenced by the latter. Body fat percentage has a nuanced relationship with swimming performance, where further investigation is required. Findings were inconsistent across studies, potentially due to unidentified confounding factors.Key points�...
Source: BMC Sports Science, Medicine and Rehabilitation - January 18, 2024 Category: Sports Medicine Source Type: research

Changes in the chronic and postprandial blood lipid profiles of trained competitive cyclists and triathletes following a ketogenic diet: a randomized crossover trial
ConclusionsTrained competitive cyclists and triathletes demonstrate increased TC in response to a two-week KD compared to a HCD or HD. Endurance athletes contemplating a KD should consider the potential for these blood lipid alterations, and future research should focus on postprandial blood lipid responses to determine if these changes manifest in chronic blood lipid shifts.Trial registrationClinicalTrials.gov Identifier: NCT04097171 (11 October 2019). (Source: BMC Sports Science, Medicine and Rehabilitation)
Source: BMC Sports Science, Medicine and Rehabilitation - January 16, 2024 Category: Sports Medicine Source Type: research