Effects of exercise-induced stress and dexamethasone on plasma hormone and glucose concentrations and sedation in dogs treated with dexmedetomidine.

Objective: To compare the effects of pretreatment with dexamethasone, physical stress (exercise), or both on sedation and plasma hormone and glucose concentrations in dogs treated with dexmedetomidine (DEX).

Animals: 6 healthy purpose-bred Beagles.

Procedure: Dogs received 4 treatments each in a randomized order prior to i.

Thermal sensation and comfort in women exposed repeatedly to whole-body cryotherapy and winter swimming in ice-cold water.

Whole-body cryotherapy (WBC; -110 degrees C) and winter swimming (WS) in ice-cold water are severe ambient cold exposures, which are voluntarily practiced by humans in minimal clothing. The purpose was to examine thermal sensation and thermal comfort associated with WBC and WS. Twenty women similar in body mass index, age, physical activity, and use of hormonal contraception were pairwise randomized either to the WBC group or the WS group.

Winter swimming improves general well-being.

Objectives: This study deals with the effects of regular winter swimming on the mood of the swimmers.

Methods: Profile of Mood State (POMS) and OIRE questionnaires were completed before (October) and after (January) the four-month winter swimming period.

Results: In the beginning, there were no significant differences in the mood states and subjective feelings between the swimmers and the controls.

Reinnervation of arterial grafts by adrenergic nerves occurs in rats as indicated by increased levels of noradrenaline.

To investigate the changes in noradrenaline concentrations in transplanted arterial grafts in rats, 31 female rats 4 to 6 weeks old of the AO/Ks:OC strain were operated on. Femoral arterial grafts were anastomosed to carotid arteries and compared with control femoral segments. Six rats were included in each follow-up group at 0, 1, 4, and 12 weeks, and there were seven rats in the 20-week follow-up group.

Noradrenaline levels rise significantly in rat arterial grafts at 6 hours postoperatively, and take 48 hours to come down.

The aim of this study was to investigate the rate of disappearance of noradrenaline in arterial grafts after their transplanation. Arterial grafts were harvested from AO/Ks:OC strain rats. In each rat, a graft was harvested from the femoral artery and transplanted into the common carotid artery.

Evaluation of methods for assessment of pain associated with chronic osteoarthritis in dogs.

Objective: To identify variables and evaluate methods for assessing chronic pain in dogs.

Design: Prospective study.

Animals: 41 dogs with canine hip dysplasia (CHD), and 24 apparently healthy dogs with no history of pain.

Plasma catecholamines, serotonin and their metabolites and beta-endorphin of winter swimmers during one winter. Possible correlations to psychological traits.

Objectives: The study was a follow-up one, in which blood pressure and hormonal changes were investigated during one winter swimming season in winter swimmers (WSs) and non-swimmer controls on three occasions (autumn, winter and spring). Humoral results were compared to psychological traits recorded at the time of the three blood samplings.

Results: Mean systolic blood pressure of the WSs fell from 134 +/- 12 mmHg to 128 +/- 12 mmHg (p < 0.

Hormonal responses to a resistance exercise performed under the influence of delayed onset muscle soreness.

Hormonal responses to an unaccustomed knee-extension exercise (E1; 5 times 10 repetitions with 40% load of 1RM [1 repetition maximum] followed by 2 sets until exhaustion) were compared in 6 men with the corresponding responses to an identical exercise performed 2 days later under the influence of delayed onset muscle soreness (DOMS) (E2). Both exercises were performed with a variable-resistance machine causing exhaustion with significantly fewer repetitions than a normal constant-resistance knee-extension device does. The E1 induced DOMS as expected, but the 1RM, the total work done, and the repetition number and frequency were not different in the 2 exercises.

Evaluation of the perioperative stress response in dogs administered medetomidine or acepromazine as part of the preanesthetic medication.

Objective: To compare the perioperative stress response in dogs administered medetomidine or acepromazine as part of the preanesthetic medication.

Animals: 42 client-owned dogs that underwent elective ovariohysterectomy.

Procedure: Each dog was randomly allocated to receive medetomidine and butorphanol tartrate (20 microgram/kg and 0.

Resistance exercise-induced hormonal responses in men, women, and pubescent boys.

Purpose: This study was designed to investigate the acute plasma catecholamine (CA) response to resistance exercise and its association with serum testosterone (TES), cortisol (COR), and growth hormone (GH) concentration changes.

Methods: Six men, six women, and six adolescent boys (14 +/- 0 yr) performed five sets of 10 knee extensions with 40% of one-repetition maximum followed by two sets performed to exhaustion. Arterialized venous blood was sampled before, during, and after the exercise for the hormone analysis.