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  • Title: Evaluation of physiological standard pressures of the forearm flexor muscles during sport specific ergometry in sport climbers.
    Author: Schoeffl V, Klee S, Strecker W.
    Journal: Br J Sports Med; 2004 Aug; 38(4):422-5. PubMed ID: 15273176.
    Abstract:
    BACKGROUND: Chronic exertional compartment syndromes (CECS) are well known in sports medicine. Most commonly affected is the tibialis anterior muscle compartment in runners and walkers. Only a few cases of CECS of the forearm flexor muscles have been reported. OBJECTIVES: To determine pressure levels inside the deep flexor compartment of the forearms during a sport specific stress test. METHOD: Ten healthy, high level climbers were enrolled in a prospective study. All underwent climbing specific ergometry, using a rotating climbing wall (step test, total climbing time 9-15 minutes). Pressure was measured using a slit catheter placed in the deep flexor compartment of the forearm. Pressure, blood lactate, and heart rate were recorded every three minutes and during recovery. RESULTS: In all the subjects, physical exhaustion of the forearms defined the end point of the climbing ergometry. Blood lactate increased with physical stress, reaching a mean of 3.48 mmol/l. Compartment pressure was related to physical stress, exceeding 30 mm Hg in only three subjects. A critical pressure of more than 40 mm Hg was never observed. After the test, the pressure decreased to normal levels within three minutes in seven subjects. The three with higher pressure levels (>30 mm Hg) required a longer time to recover. CONCLUSIONS: For further clinical and therapeutic consequences, an algorithm was derived. Basic pressure below 15 mm Hg and stress pressure below 30 mm Hg as well as pressures during the 15 minute recovery period below 15 mm Hg are physiological. Pressures of 15-30 mm Hg during recovery suggest high risk of CECS, and pressures above 30 mm Hg confirm CECS.
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