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Query: UMLS:C0234233 (Tenderness)
 375 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The interrelationship of the time courses of soreness and oedema, and of force and phosphorus metabolites after eccentric exercise was studied. Eight male subjects performed 120 maximal eccentric contractions with their left forearm flexors. Soreness, maximal force, flexion and extension elbow angle, and creatine kinase and myoglobin efflux were followed for 96 h after exercise. For equal periods T1 and T2 relaxation times and muscle cross-sectional area were calculated from magnetic resonance images as indications of oedema, and inorganic phosphate (P(i)) and phosphocreatine (PCr) were measured with magnetic resonance spectroscopy. Soreness on extension increased at 1 h (P = 0.043), T1 and T2 (both P = 0.01) and soreness when the arm was pressed (P = 0.028) at 24 h, and muscle cross-sectional area increased at 48 h (P = 0.01) after exercise. Soreness on extension reached a maximum at 48 h, the other four parameters at 72 h. All parameters related to oedema, and soreness, showed an increasing pattern for the period after exercise as a whole, but the largest increase between two points of measurement occurred earlier for soreness than for oedema. Creatine kinase increased significantly from baseline from 24 h onwards (P = 0.017) and myoglobin from 1 h onwards (P = 0.012). The P(i):PCr ratio differed from baseline for the first time 24 h after exercise (P = 0.018), increased to 225%, and then remained on a plateau until 72 h. Maximal isotonic force decreased to 53% at 1 h (P = 0.012).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Changes in phosphorus compounds and water content in skeletal muscle due to eccentric exercise. 803 16

Tenderness and mineral levels were determined in the Longissimus thoracis taken from 20 llama and 30 alpaca males reared in Peru and slaughtered at 25 months of age. Mineral contents were determined using an inductively coupled plasma emission spectrometer. Tenderness evaluation was determined two and seven days post slaughter using a Warner-Bratzler shear force device. Potassium is the mineral with the highest content, with a significant difference (P<0.05) between the two species of camelids. The other mineral contents were, in decreasing order, phosphorus, sodium, magnesium and calcium, in addition to smaller percentages of zinc and iron. Shear force values determined seven days post slaughter were significantly (P<0.01) lower in both the species compared with the results obtained two days post slaughter.
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PMID:Tenderness evaluation and mineral levels of llama (Lama glama) and alpaca (Lama pacos) meat. 2206 47