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At least 19 recordsLinked to original sources
PubMed2026

Acute Performance, Mechanical and Thermal Effects of Isometric Conditioning Versus Standardized Volleyball Pre-Training Activation in Highly Trained Male Players.

This study compared acute performance, neuromuscular, and thermal responses to a maximal isometric conditioning activity (ICA) versus a standardized volleyball pre-training activation (VPA) in highly trained male volleyball players, and to explore putative mechanisms underpinning post-activation performance enhancement (PAPE) considering training load. In a randomized crossover, 14 men (27 ± 3 y) completed two sessions: VPA (mobility/plyometric drills; 9 min), and ICA comprising 3×5×3-s maximal isometric back-squat contractions (knee angle 120°; 3-min inter-set rest). Countermovement jump (CMJ) height (primary), relative peak power (PP), RSImod, and contraction time (CT) were recorded pre and 3, 6, 9, and 12 min post. Rectus femoris muscle viscoelastic properties and skin surface temperature (SST) were assessed at matched time points. Analyses used repeated-measures ANOVA, responder analysis, correlations, and regression. Period×Sequence interactions favored ICA for CMJ and PP when delivered in Period 2 (lower training volume): ∆CMJ was higher under ICA versus VPA (p = 0.005, d = 1.20); PP likewise greater (p = 0.026, ηp2 = 0.35). ICA yielded more beneficial responders than VPA (9/14 vs 1/14; McNemar exact p = 0.021). In Period 2, reductions in rectus femoris muscle stiffness independently predicted CMJ gains (β_std = -0.495, p = 0.005), whereas SST changes did not (p = 0.974). RSImod and CT showed no differences. A brief, high-effort isometric squat protocol was associated with superior acute improvements in jump performance compared with a standard volleyball warm-up, but this advantage emerged specifically when the preceding training volume was reduced (Period 2), suggesting that residual fatigue from training may reduce the effects of PAPE. Gains align with neuro-mechanical rather than thermal mechanisms, supporting ICA as a practical, equipment-minimal priming strategy for elite volleyball.

Humans↗
PubMed1992

Cause-specific mortality of white-tailed deer as influenced by military training activities in southwestern Oklahoma.

Radio-telemetry was used to monitor movements and mortality of 56 white-tailed deer (Odocoileus virginianus) in response to intensive military training activities on West Range (18,000 ha), Fort Sill Military Reservation, Oklahoma. Cause-specific mortality was determined for 22 radio-collared deer, including adults (greater than or equal to 2.0-yr-old), yearlings (0.6-1.9-yr-old), and fawns (less than or equal to 75-day-old age group) from 1987 to 1989. Winter home ranges were largely confined to a 14,411 ha impact area centrally located on West Range. The mean annual mortality rate was 0.50 for adults and yearlings combined. Fifty percent of all adult and yearling mortality was attributed to military training activities, 28% to hunting, 16% to collisions with automobiles, and 6% to unknown causes. The mean monthly mortality rate was 0.61 for neonatal fawns and predation accounted for three of four mortalities. All captured deer in the greater than or equal to 2.6-yr-old, 82% in the 1.6-yr-old, 10% in the 0.6-yr-old, and all deer in the less than 7-day-old age groups were seropositive for bluetongue virus (BTV). Our study strongly suggests that the consequences of military training activities should be considered in the management of white-tailed deer herds on military installations.

Animals↗
PubMed1990

Functional and psychosocial consequences of disease and experience of pain and exertion in a group of rheumatic patients considered for active training. Result of a survey in Bollnäs Medical District. I.

The purpose of this study was to select and describe a group of RA patients within a defined area who had, on clinical grounds, been considered for active training. The material consisted of 69 patients with classical or definite RA. It comprised half of the RA patients known to the clinic. The patients were assessed by means of a questionnaire, functional tests with rating of activity-induced pain, a cycling-test with rating of perceived exertion, and an interview by a psychologist. Subjective disease consequences were pain and stiffness. 38% of the patients never or seldom exercised. 72% wished to increase their activity but were prevented by pain. The functional tests indicated slow performance and considerable pain in activities of daily life. The interview disclosed above all, a low degree of self-confidence. Generalized pain and functional impairment correlated slightly with psychosocial factors. The results of the study indicate the need for active training as one strategy to alleviate pain and to maintain functional capacity in RA patients.

Adaptation, Psychological↗
PubMed1991

[Lateral instability of the ankle joint (2). Active training programs can prevent surgery].

One hundred consecutive patients with chronic lateral functional instability of the ankle were treated non-operatively with physiotherapy (active range-of-motion training, strengthening exercises and co-ordination training with a tilt-board). All patients were evaluated functionally with a special rating scale, and radiologically with standardised stress radiographs measuring anterior talar translation (ATT) and talar tilt (TT). Excellent or good functional results were obtained in 49 of the patients, fair or poor in the remainder. The outcome was better in those with painful functional instability or mild mechanical instability, while those with more pronounced mechanical instability required further treatment (i e, reconstructive surgery). Of 10 patients with generalised joint laxity, only fair or poor results were obtained in seven, all of whom had mechanical instability.

Adult↗
PubMedDate not supplied

[A comparison of the spike train activity of the cortical neurons and of the spatial synchronization of the EEG].

In chronic experiments EEG coherence and conjugation of impulse activity were compared of neurones of the visual and sensorimotor areas of rabbits neocortex simultaneously recorded with the same electrodes. Connection was revealed between the presence and properties of conjugated neurones activity and EEG coherence at various frequencies. At correlated neurones activity a greater EEG coherence was observed on frequencies of 3-4,5 Hz than at the independent activity. At the highest level of the EEG coherence the neurones discharged with less delay of one after the other in pairs, and in their synchronization a common source participated more often than at the lowest level of the EEG coherence.

Animals↗
PubMed1978

The psychologist in the community mental health center: an analysis of activities and training needs.

Professional activities and expressed needs for additional training were examined in the case of 211 psychologists employed in 51 community mental health centers in western United States. Two-thirds of the work week is taken up directly or indirectly with traditional clinical services, 19% with community mental health activities; and the balance in program development, administration, research, and program evaluation. In contrast to the common assertion linking psychologists and research activity, the current results indicate that psychologists in community mental health centers devote very little time to research or program evaluation. Expressed training needs parallel reported activity patterns - highest for clinical functions and moderately high for community mental health functions. The significant impact of the community mental health movement is seen in both the distribution of professional activities and in expressed needs for additional competence.

Adult↗
PubMed1989

[Possibilities of objective assessment of the course of activation in ideomotor training].

An active exploration of movement tasks is accompanied with central nervous activation. Its systematical examination needs a teamwork of scientists of various branches of knowledge (i.e. physiology, psychology, sport sciences). Mental training (motor imagination - MI) was chosen as a model for such examinations. In connection with the execution of MI there are characteristic chances of the mean alpha frequency of the EEG, heart rate, respiration rate and skin conductance. The time course of these parameters depends on the number, the duration and the sequence of MI. A graduated submaximal load on ergometer has no influence on the course of the examined parameters. Our investigation allows the conclusion that different activation processes go on within different subsystems during the execution of MI. From a physiological point of view it seems to be necessary that a concrete paradigm of MI must be examined concerning the course of the parameters and, thus, to guarantee the effort of MI.

Adolescent↗
PubMed1991

A national survey on pediatric training and activities in school health.

National trends in school health practice and training were assessed 10 years after the report of the 1978 American Academy of Pediatrics Task Force on Pediatric Education. A questionnaire was sent to 2,237 randomly selected AAP Fellows and was returned by 1,068 (48%). Seventy-seven percent of practicing pediatricians reported involvement in some type of school-based or school consultant activity. Those having residency training in school health and those practicing in rural areas were most likely to be involved. The most common types of activity were school-based pre-athletic exams (56%), consultant to special education placement (26%), and game/event physician (23%). Pediatricians were paid for 20% of sports-related school consultation and 25% of nonsports school health activities. Didactic or clinical training in school health was offered during residency to 19%. Specific didactic topics in school health included learning and attention deficit disorders (32%), physician role in health education (15%), and sports medicine (12%). Preathletic participation exams were the most commonly performed school health activity during residency (23%), followed by serving as a school consultant (11%), and attending an individual education plan meeting (7%). Most pediatricians engaged in school health activities. However, they did so without preparation during residency and without payment for their services.

Chi-Square Distribution↗
PubMed1990

The effect of prompting and reinforcement of activity in elderly demented inpatients.

On a ward for 24 psychogeriatric patients, 18 were randomly assigned to three groups with different experimental conditions. The first group was prompted and reinforced for different activities; the second was only prompted; and the third served as a control group. Activities, both the trained ones and others, were continuously monitored throughout the five week study. The results showed a clear increase in the trained activities after training. The prompting condition was effective, and the addition of reinforcement did not add any to the effects. There was no generalization to untrained activities, and the effects did not last at the 1 hr or 21 hr assessments, but was clearly visible at 5 min after training. Time seemed to be more important than place, i.e. the effect ceased with elapsed time, not because of changes in the situation.

Activities of Daily Living↗
PubMed1991

Chief resident training. Developing leadership skills for future medical leaders.

Most future medical leaders receive little or no formal exposure to management and leadership training activities. Industry invests considerable resources in such training for middle and senior level managers. With the increasing complexity of health care delivery systems and the increased involvement of diverse teams of individuals in the care of patients, it was believed that a training activity designed to enhance participant human interaction skills and teach about group behavior and team management might be valuable to pediatric chief residents. This article describes a 3-day workshop designed to develop such leadership skills. It has been conducted for 3 years with 117 participants. Results of end-of-course and 6-month follow-up evaluations show that participants enjoyed the training experience and believed it was valuable in helping them fulfill their leadership role as chief resident.

Curriculum↗
PubMed1978

beta-Glucuronidase activity in trained red and white skeletal muscle of mice.

We studied the effects of prolonged running exercise (5 days a week, 1.5 h per day at a speed of 17.6 m/min) on the activity of some acid hydrolases (beta-glucuronidase, beta-N-acetylglucosaminidase, acid phosphatase and cathepsin D) and three enzymes of energy metabolism (cytochrome c oxidase, lactate dehydrogenase and creatine kinase) in the distal and in the proximal, the predominantly white and red parts, respectively, of the vastus lateralis-muscle from mice. The acid hydrolase activity levels were 1.24--1.69 higher in untrained red muscle compared to untrained white muscle. The light training applied increased the activity of beta-glucuronidase in both red and white muscle. No other significant training effects were observed in the enzyme activities measured.

Acetylglucosaminidase↗
PubMed1991

Increasing habilitative services for persons with profound handicaps: an application of structural analysis to staff management.

We evaluated a structural analysis methodology for enhancing the utility of a staff management program. In Experiment 1, a structural analysis of direct-care staff behavior in a mental retardation facility revealed differences in work patterns over time. Specific times were identified when few basic care duties were necessary and staff engaged in nonwork activity. In Experiment 2, a management program was implemented to increase staff members' training activities during periods identified through the structural analysis. The program was accompanied by increases in training activities and decreases in nonwork behavior. The improvements were maintained during a 43-week period while the most labor-intensive component of the program was withdrawn. Staff acceptability measures indicated a positive response to the management intervention, although responses varied across components within the multifaceted program. The increased training was accompanied by beneficial changes among clients with profound handicaps. Results are discussed regarding practical considerations for improving staff performance and for adopting innovations resulting from applied research.

Adult↗
PubMed1975

Bladder training: its role in evaluating the effect of an antispasticity drug on voiding in patients with neurogenic bladder.

Fourteen patients with spinal cord damage were treated with Ba-34647 (Lioresal, Ciba-Geigy), a new antispasticity drug. The treatment was initiated for excessive skeletal muscle spasticity and voiding difficulty. Seven of the patients had been wearing indwelling catheters and seven were catheter-free. The former were given trials at voiding after removal of catheters; the usual assistive methods common to most bladder training regimens were administered. Despite this, the trials were unsuccessful in reducing residual urine to acceptable levels. With addition of therapeutic doses of the drug without the training regimen, voiding trials were also unsuccessful excepting the response of one patient. The drug plus the training regimen was effective in reducing residual urine to acceptable levels in all patients. On discontinuing or decreasing the dosages of the drug, there was gradual but rapid build-up of residual urine despite the active training regimen. Restoration of effective dosage again led to satisfactory voiding function in all patients. The catheter-free group suffered from frequency, nocturia, and bed-wetting owing to excessive residual urine despite the employment of active training regimens. With addition of optimal dosages of Ba-34647, these problems were markedly reduced. They increased with drug discontinuation or dosage decrease and again improved upon restoration of effective doses. Bladder training, including active assistance to the expulsion of urine, is essential to the evaluation of antispasticity drugs for their effect on voiding.

Adult↗
PubMed1979

The effect of retabolil and training on activity of RNA polymerase in skeletal muscles.

One hundred and twenty male albino rats weighing 180--200 g were used to determine the effect of anabolic steroid hormones on adaptive changes in the synthesis of ribosomal RNA both in sedentary animals and in animals involved in a training program. One injection of Retabolil (0.1 mg/100 g body weight) increased the alpha-amanitin insensitive RNA polymerase activity of nuclei from skeletal muscles. Fourteen h after this hormone injection the enzyme activity was 45% higher than in control animals and it remained at this level for 4 days. Under these conditions a selective binding of 19-nortestosterone with cytoplasmic proteins of skeletal muscle was found. Physical training increased the RNA polymerase activity by 50% (P less than 0.05). It was found that the testosterone binding capacity of a cytoplasmic extract from trained animals was 70% greater than that of the control animals (P less than 0.05). Four injections of Retabolil during training resulted in an additional increase of RNA polymerase activity of 40% (P less than 0.05) but reduced the testosterone binding capacity of the cytoplasmic proteins that occurred with training by 21%. The findings demonstrate the effect of anabolic hormones in the regulation of RNA synthesis in skeletal muscle nuclei in the process of their adaptation to systematic physical training.

Anabolic Agents↗
PubMed1992

[Serotonin-induced changes in the responses of electrically stimulated neuronal membrane of the mollusk].

Serotonin (5-HT) added to washing solution has been studied for its effect on plastic properties of electrically excitable membranes of the parietal ganglion and identified PPa2 neurons in the isolated nerve system of snails. It is shown that neurons habituated to intracellular stimulation are able to restore action potential generation in the presence of 5-HT. Contrary, neurons possessing endogenous rhythmic activity (PPa2) generate train activity on the background of appearance of the membrane potential slow waves under the influence of 5-HT. A comparative analysis of 5-HT and chemicals with the known effect on activity of Ca and Ca-dependent K-channels (quinine, CoCl2, CdCl2) has demonstrated diversity of mechanisms underlying the 5-HT-ergic regulation of plasticity of the neuronal electrically excitable membrane. This difference stems from the processes of activation and blockade of Ca-dependent channels.

Action Potentials↗
PubMed1979

Establishing activity and training levels for patients with ischemic heart disease.

The paper presents guidelines for determining ideal training heart rates and recreational and occupational energy-cost levels for individual patients with ischemic heart disease. These guidelines were established by Karvonen, are based on results of progressive exercise testing, and have been applied to a broad spectrum of subjects in outpatient conditioning programs. How to apply these guidelines to establish beneficial and safe activity levels is illustrated with a fictional patient's medical history, progressive exercise test results, and recreational and occupational history and preferences.

Activities of Daily Living↗