International SportMed Journal - Volume 9, Issue 1, 2008
Volume 9, Issue 1, 2008
Source: International SportMed Journal 9, pp 1 –10 (2008)More Less
The diagnosis of acetabular labral tears in the athlete with disabling hip pain can be challenging to the sports medicine practitioner. Recent advancement in our clinical skills, imaging techniques and the development of hip arthroscopy has played a significant role in managing these sports-related hip injuries back to their sport. This article will highlight evaluating and managing athletes with hip labral tears and femoroacetabular impingement syndrome and the use of advanced arthroscopic techniques to treat these disorders.
Author Jaak JurimaeSource: International SportMed Journal 9, pp 11 –21 (2008)More Less
A rowing competition usually takes place over a 2000m course and lasts for 5-7min, depending on the boat class and performance ability of the rower. The aerobic contribution to energy supply amounts to approximately 70-80% during the 2000m rowing distance and maximal oxygen consumption (VO2max) appears to be one of the best criteria for predicting performance in rowing, which relies on power production by the large muscle groups. Prolonged, intense, endurance training sessions on water make up the largest part of the training programme in rowers and this can easily result in the rower becoming overreached. Different psychometric and blood biochemical parameters, in addition to the performance tests, have been used in rowing training monitoring. The Recovery-Stress Questionnaire (RESTQ) for Athletes, which measures both stress and recovery, appears to be effective in monitoring the training status of rowers. There is also evidence to suggest that leptin is more sensitive to training volume changes than the specific stress hormones (cortisol, testosterone), while maximal 2000m exercise-induced changes in leptin and adiponectin concentrations can be used to identify the first signs of overreaching as a result of increased training volume in rowers. In conclusion, probably the most effective way to monitor training status in rowers is to evaluate both the stress and recovery components simultaneously, using psychometric data together with the blood biochemical and performance parameters.
The influence of arginine supplementation on performance and metabolism in athletes : review articleSource: International SportMed Journal 9, pp 22 –31 (2008)More Less
Objective: The aim of this review was to investigate the effects of supplementation with arginine, mainly in combination with aspartate and / or other potentially ergogenic amino acids, on metabolism of substrates, endocrine parameters and performance in endurance and resistance athletes.
Data sources: The database PUBMED was consulted, using the following keywords "arginine", "aspartate", "performance" and "metabolism". The references in these articles were scanned for further relevant publications.
Study section: Studies with oral or intravenous administration of arginine and / or aspartate alone or in combination with other amino acids were selected.
Data extraction: Studies with at least six subjects and utilising a placebo-controlled design were analysed.
Data synthesis: Seven studies with the combination of arginine aspartate and evaluation of the effect on performance in athletes were found and evaluated. In addition, further studies with arginine and combination with other amino acids were found and analysed in the same manner.
Conclusions: No effect on selected parameters of metabolism or the endocrine system have been shown after oral or intravenous arginine, arginine aspartate or other combinations with arginine and aspartate. Neither were there any ergogenic effects in trained athletes after oral or intravenous arginine use, either alone or in combination with aspartate and / or other potentially ergogenic amino acids.
Author Wayne DermanSource: International SportMed Journal 9, pp 32 –38 (2008)More Less
Source: International SportMed Journal 9, pp 39 –45 (2008)More Less
The number of artificial joints implanted worldwide has increased dramatically over the last 20 years. In the majority of cases quality of life, as well as overall postoperative mobility, has increased as a result of joint replacement. Furthermore, improved quality of implants, optimised implantation techniques and growing experience among surgeons have led to an improved durability of prosthesis, faster rehabilitation following surgery, and a broader range of indications for treatment. As a result, the indications for treatment with joint replacement have expanded and even younger patients are now being provided with an endoprosthesis, especially for the replacement of hip and knee joints, as well as shoulder and ankle joints. The patients' growing demand for improved quality of life and enhanced functionality during work or recreational activities after having received a total joint replacement requires a thorough revaluation of the patient's ability to cope with physical stress, especially while performing athletic activities. In the past, the main focus rested on restoring activities of daily living (ADL). Today, that focus has shifted towards resuming previously played sports, as well as taking on new forms of exercise.