The purposes of the study were to track weightlifters' barbell acceleration with a portable accelerometer over three training sessions to examine test–retest reliability and to compare peak barbell acceleration at different training intensities. Twelve nationally ranked weightlifters volunteered for this study. The portable accelerometer was attached to the right side of the barbell to measure barbell resultant acceleration during the snatch lift at a sampling frequency of 100 Hz. The data were collected over three training sessions at intensity levels of 80%, 85%, and 90% of one repetition maximum. The data were analyzed using intra-class correlation coefficients (ICCs) for the three training sessions and one-way repeated measure ANOVA to compare the difference in peak barbell acceleration at three intensities. Results showed that the device was highly reliable with an ICC of 0.88 and 95% confidence interval of 0.81–0.93. There were significant differences in peak barbell acceleration at various lifting intensities, indicating a decline of the acceleration as the mass of the barbell became heavier. The portable accelerometer seems useful in measuring barbell acceleration data, which can be analyzed in future studies to monitor a weightlifter's performance in a practical setting instead of testing at a laboratory.

The purpose of this study was to examine the relationships between several school psychologist variables and overall engagement in parent training/education activities with the parents of children with ADHD. Specifically, school psychologists were surveyed regarding their general attitude toward parent-focused activities, role profiles, intensity of training, perception of barriers/facilitators, and frequency of engagement in parent training/education activities. Participants included 163 school-based school psychologists in Florida who were members of FASP. Data were collected through the use of an Internet survey. Hypotheses were analyzed using correlations and a backward multiple regression analysis. Results indicated that school psychologists in Florida were engaging in parent training/education activities on average approximately 1-2 times per semester. The data suggested that a school psychologist’s intensity of training in formal parent training, parent involvement, and behavior theory/management was most significantly related to his or her engagement in parent training/education activities. Demographic variables including degree level, experience level, recency of training, number of schools served, primary employment setting, and caseload were not significantly related to engagement. Additionally, a school psychologist’s role profile was not significantly related to engagement in parent training/education activities. Data analysis revealed a moderate, positive, statistically significant correlation between general attitude and extent of engagement in parent training/education activities. Thus, the more positive a school psychologist’s general attitude was regarding parent-focused activities, the more likely he or she was to engage in parent training/education activities with the parents of children with ADHD. Perceived expertise in parent training/education activities was the only potential barrier that resulted in a statistically significant difference between those participants who perceived it as a barrier and those who did not. This indicates that those who perceived their level of training/expertise in parent training/education activities as a barrier to engagement were in fact less likely to engage in parent training/education activities.

PURPOSE: Controlling and monitoring volume load (VL) and training intensity (TI) is essential to managing injuries, fatigue and the recovery-adaptation process in competitive athletes. Conventional calculations of VL (sets x reps x load) and TI (VL/reps) give no consideration to barbell displacement during resistance training exercises. The purpose of this investigation was to determine whether the inclusion of displacement in VL and TI calculations would provide substantial benefits over conventional calculations of VL and TI. METHODS: Eight trained weightlifters (5 male, 3 females, 173.6 cm and 88.6 kg), 7 of which were national level, participated in the study. For each subject, a V-scope 120 was used to measure the concentric phase displacement of 24 different exercises performed during the study. VL, TI, VL with displacement (VLwD) and TI with displacement (TIwD) were calculated on a daily basis (VLwD= VL x displacement, TIwD = VLwD/reps). Loads and repetition counts were recorded for each exercise performed over 21 weeks of training which allowed for the calculation of VL, VLwD, TI and TIwD across several training phases. RESULTS: VL correlated strongly to VLwD (r=0.98) while TI also correlated strongly with TIwD (r=0.88). CONCLUSIONS: Results suggest that if exercise selection remains consistent, measuring VL and TI without displacement can illustrate workloads similar to measuring VL and TI while factoring in displacement.

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Exercise intensity and its distribution is probably the most important and most heavily debated variable of endurance training. Training induces adaptation but also induces stress responses. Controlling the training-intensity distribution may provide a mechanism for balancing these two effects. It has been reported that elite endurance athletes train with a high volume and load, relative to the sport. These athletes spend the vast majority (>80%) of training time at relatively low intensities (lower than the lactate threshold, zone one), and therefore <20% of training time above the lactate threshold (zones two and three). Experimental studies support the beneficial effects of a high training volume in zone one, and show detrimental effects of replacing zone one training with training in zone two. This is likely due to enhanced recovery from training in zone one compared with training in zone two. The acute recovery following training sessions in zones two and three has been reported to not be different, but the recovery following training in zone one has been reported to be faster. Improvements in physiological adaptation and endurance performance have been reported to be greater following training programmes with higher exercise intensities. Therefore, it has been suggested that a polarised training model, which includes ~80% of training in zone one with ~20% of training in zone three is more beneficial than a threshold training model, with the majority of training in zone two. However, research into an optimal training-intensity distribution is limited. Therefore, the aims of this thesis were to assess the effectiveness of training-intensity distribution on the improvements in physiological adaptation, endurance performance and assess if manipulating training-intensity distribution had an effect on immune function. Study one revealed that the lactate threshold, the lactate turnpoint and maximal performance measures in swimming, cycling and running, assessed using the methods outlined in the study, are reproducible in trained endurance athletes. These tests can therefore be used by trained endurance athletes as part of a physiological testing programme to assess not only endurance performance, but also to demarcate training intensity zones for exercise intensity prescription and monitor moderate to large adaptations to training. Practitioners should take care when deciding on the duration between tests to test for adaptations from training, as adaptations need to be greater than these detected test-retest variations to be considered physiologically meaningful. To the best of the author’s knowledge, study two was the first study to have assessed training-intensity distribution in a group of multisport athletes. Training was monitored over a 6-month period, and testing took place every two months to assess the effect of the training on physiological adaptation. Although speculative due to the number of variables involved, the results suggest that a greater proportion of training time spent in zone one and a lower proportion of training time spent in zone two is beneficial to physiological adaptation. However, given the number of variables associated with assessing the training-intensity distribution in multisport athletes, it is not easy to draw conclusions as to the effectiveness of the training in the different disciplines on the key measures of adaptation in the different disciplines. Study two highlighted the need for future research to focus on experimental manipulation of training-intensity distribution and thus improve our understanding of its impact on the training-induced adaptations in endurance athletes. Study three manipulated the training-intensity distribution in trained endurance athletes in just one discipline, to reduce the number of variables involved. A polarised training model was compared to a threshold training model on the effectiveness to improve physiological adaptation and endurance performance. Results revealed that a polarised training model is recommended for trained cyclists wishing to maximally improve performance and physiological adaptation over a short-term (six week) training period. The first part of study four assessed the effect of a polarised and a threshold training model on immune function markers in trained cyclists. Both endurance training programmes had similar volume, and were sufficient to induce improvements in performance and physiological adaptation. However, despite likely differences in recovery, both training programmes had no effect on the proportion of low or high differentiated or senescent CD8+ or CD4+ T-cells in blood. Therefore, training adaptation was achieved at no cost to this particular aspect of immune function. From these results and evidence from previous studies, it seems likely that athletes need to be overreached to induce any change in immune function following a period of intensified training. The second part of study four assessed the impact of an ironman triathlon race on Epstein-Barr virus (EBV) and Varicella-Zoster virus (VZV) antibody titres and the frequency of low and high differentiated and senescent blood T-cells in trained endurance athletes. Previous work has revealed that an ironman triathlon race increases the proportion of senescent CD4+ T cells and decreases the proportion of naive CD4+ T cells, and thus induces changes the immune space which could leave an individual at a greater risk of infection. This study however, did not find any changes in the proportions of these T cell subsets following an ironman triathlon race. The mean results of this study suggest that there is no relationship between EBV and VZV-specific antibody concentrations and the proportion of senescent, low and highly differientiated T cells. However, on analysis of individual subject data, it seems possible that subjects with a high antibody titre for EBV or VZV 3 wks before a competition might be more at risk of infection post race. A greater subject number would be needed in order to make a more conclusive statement about this relationship. The results of this thesis suggest that future research is required in the area of training-intensity distribution. Firstly, our understanding of the physiological mechanisms responsible for the effectiveness of a polarised training model in trained endurance athletes is limited, and thus studies should attempt to address this issue. Our current knowledge on the mechanisms underlying a blunted T cell response following strenous exercise is also limited. A change in the immune space to a greater proportion of senescent T cells and a lower proportion of naive T cells might contribute to this blunted response. In the current thesis however, the proportions of these T cell markers were unchanged following the training/racing interventions. It is possible that with a higher training load, there could be changes in these markers, and thus this is an exciting area that could have potential implications on athlete health. Finally, testing for antibody titres in endurance athletes is possibly an avenue to detect individuals at the greatest risk of infection if subjected to a large physical and/or mental stress. This could have implications on maintaining athlete health and therefore, allowing athletes to train consistently.

Darbo tikslas: Ištirti studentų nusiskundimų skeleto raumenų skausmu sąsajas su psichologiniu distresu ir miego sutrikimais. Uždaviniai. Įvertinti trijų aukštųjų mokyklų studentų nusiskundimų skeleto raumenų skausmu dažnį; įvertinti psichologinio distreso ir miego sutrikimų paplitimą tarp trijų aukštųjų mokyklų studentų; nustatyti sąsajas tarp studentų musiskundimų skeleto raumenų skausmu, psichologinio distreso, miego sutrikimų ir darbo su kompiuteriu trukmės. Tyrimo metodika. Atliktas vienmomentinis tyrimas anoniminės apklausos būdu. Anketą sudarė klausimai apie sociodemografines tiriamųjų charakteristikas, miego, vidinės darnos, bendrosios sveikatos psichologiniam distresui vertinti klausimynai, klausimai apie tiriamųjų fizinį aktyvumą, žalingus įpročius. Naudotas Miego klausimynas (Karolinska sleep questionnaire). Vidinė darna matuota sutrumpinta A.Antanovsky sukurta 3 klausimų anketa. Tyrime dalyvavo 615 respondentų. Anketiniai duomenys apdoroti ir analizuoti naudojant statistinį paketą SSPS 20.0. Rezultatai: Tyrimo rezultatai parodė, jog patikimai skyrėsi studentų nusiskundimai kaklo skausmu. Dažniausiai kaklo skausmus jautė VDA Kauno fakulteto (58,6 proc.) ir LSMU veterinarijos (57,6 proc.) studentai (vaikinai). Rezultatai patikimai skyrėsi nuo LSU visuomenės sveikatą, LSMU mediciną ir LSU treniravimo sistemas studijuojančių respondentų. Kaklo skausmais skundėsi 66 proc. LSMU medicinos ir 57 proc. veterinarijos studenčių (reikšmingai skyrėsi nuo kitų specialybių... [toliau žr. visą tekstą] / Aim of the study: To explore the students complaints of musculoskeletal pain correlation with psychological distress and sleep disorders. Objectives. Evaluation of three high school students complaints about the frequency of musculoskeletal pain; to evaluate the prevalence of psychological distress and sleep disorders among the three high school students; to determine the links between students complaints of musculoskeletal pain, psychological distress, sleep disorders and computer work duration. Methods. Has been carried out one instance anonymous interviewing study. The questionnaire consisted of questions about the characteristics of the concerned sociodemografic, sleep, internal consistency, psychological questionnaires to assess the general health distress, questions about the physical activity, harmful habits. Used Sleep questionnaire (Karolinska sleep questionnaire). Internal consistency measured via short A.Antanovsky created 3 questions questionnaire. The study involved 615 respondents. The particulars of the processed and analyzed using the statistical package 20.0 SSPS. Results: Results of the study showed that reliably differed students complaints of neck pain. Mostly neck pains felt VDA KF (58.6%) and LSMU veterinary (57,6%) students (guys). Results reliably differed from the LSU public health, LSMU medicine and the LSU coaching systems studying respondents. Complained about neck pains 66% LSMU medicine and 57% of veterinary female student’s (significantly... [to full text]