Assessment of the effects of toxic chemicals upon earthworms

Imperial Users onl

What can inactivity (in its various forms) reveal about affective states in non-human animals? A review

Captive/domestic animals are often described as inactive, with the implicit or explicit implication that this high level of inactivity is a welfare problem. Conversely, not being inactive enough may also indicate or cause poor welfare. In humans, too much inactivity can certainly be associated with either negative or positive affective states. In non-human animals, however, the affective states associated with elevated or suppressed levels of inactivity are still not well understood. Part of the complexity is due to the fact that there are many different forms of inactivity, each likely associated with very different affective states. This paper has two aims. One is to identify specific forms of inactivity that can be used as indicators of specific affective states in animals. The other is to identify issues that need to be resolved before we could validly use the remaining, not yet validated forms of inactivity as indicators of affective state. We briefly discuss how inactivity is defined and assessed in the literature, and then how inactivity in its various forms relates to affective (either negative or positive) states in animals, basing our reasoning on linguistic reports of affective states collected from humans displaying inactivity phenotypically similar to that displayed by animals in similar situations, and, when possible, on pharmacological validation. Specific forms of inactivity expressed in response to perceived threats (freezing, tonic immobility, and hiding) appear to be, to date, the best-validated indicators of specific affective states in animals. We also identify a number of specific forms of inactivity likely to reflect either negative (associated with ill-heath, boredom-like, and depression-like conditions), or positive states (e.g. ‘sun-basking’, post-consummatory inactivity), although further research is warranted before we could use those forms as indicators of the affective states. We further discuss the relationship between increased inactivity and affective states by presenting misleading situations likely to yield wrong conclusions. We conclude that more attention should be paid to inactivity in animal welfare studies: specific forms of inactivity identified in this paper are, or have the potential to be, useful indicators of affective (welfare) states in animals

The effect of massage on localized lumbar muscle fatigue

BACKGROUND: There is not enough evidence to support the efficacy of massage for muscle fatigue despite wide utilization of the modality in various clinical settings. This study investigated the influence of massage application on localized back muscle fatigue. METHODS: Twenty-nine healthy subjects participated in two experimental sessions (massage and rest conditions). On each test day, subjects were asked to lie in the prone position on a treatment table and perform sustained back extension for 90 seconds. Subjects then either received massage on the lumbar region or rested for a 5 minute duration, then repeated the back extension movement. The median frequency (MDF), mean power frequency (MNF), and root mean square (RMS) amplitude of electromyographic signals during the 90 second sustained lumbar muscle contraction were analyzed. The subjective feeling of fatigue was then evaluated using the Visual Analogue Scale (VAS). RESULTS: MDF and MNF significantly declined with time under all conditions. There was no significant difference in MDF, MNF or RMS value change between before and after massage, or between rest and massage conditions. There was a significant increase in fatigue VAS at the end of the 2(nd) back extension with rest condition. There was a significant difference in fatigue VAS change between massage and rest condition. CONCLUSIONS: A significant difference was observed between massage and rest condition on VAS for muscle fatigue. On EMG analysis, there were no significant differences to conclude that massage stimulation influenced the myoelectrical muscle fatigue, which is associated with metabolic and electrical changes

The effectiveness of connective tissue massage in the treatment of primary dysmenorrhea among young women

OBJECTIVE: to evaluate the possible effectiveness of connective tissue massage for the non-medical treatment of primary dysmenorrhea. METHODS: this was a pilot observational cohort study. SETTING: University clinics. PARTICIPANTS: Seventy two young women presenting primary dysmenorrhea. INTERVENTION: Physiotherapy students in their last year at university and physiotherapists were trained for 20 hours to apply the massage. All volunteers were submitted to lumbar connective tissue massage twice weekly, while they were not menstruating, during the three menstrual cycles that followed admission. The following regions were manipulated: sacral, lumbar, last thoracic vertebrae and subcostal. INDICATORS: Pain score, use of pain medication and other menstrual systemic symptoms over time (before treatment, after each of the three menstrual periods during treatment, and in the second and in the third month following treatment). RESULTS: after the first treatment month, the pain score decreased significantly (pOBJETIVO: avaliar a possível efetividade da massagem do tecido conjuntivo para o tratamento não medicamentoso da dismenorréia primária. MÉTODOS: estudo piloto, do tipo observacional de coorte com setenta e duas mulheres jovens com dismenorréia primária em Clínica Universitária. Estudantes de fisioterapia e fisioterapeutas receberam treinamento de 20 horas para aplicar a massagem. Todas as voluntárias receberam massagem do tecido conjuntivo lombar duas vezes por semana, no período intermenstrual durante os três ciclos menstruais após a admissão. As regiões manipuladas foram: sacral, lombar, última vértebra torácica e sub-costal. Desfechos avaliados: Escore de dor, uso de medicamentos e ocorrência de outros sintomas sistêmicos ao longo do tempo (antes do tratamento, após cada ciclo menstrual durante o tratamento e nos dois meses após o tratamento). RESULTADOS: o escore de dor diminuiu significativamente após o primeiro mês de tratamento (p<0,001). A porcentagem de voluntárias que precisou de medicamentos para dor e que relatou sintomas sistêmicos diminuiu com o tempo de tratamento, mas não houve correlação entre o número de massagens e o escore de dor na análise multivariada. CONCLUSÃO: a massagem do tecido conjuntivo pode causar uma redução da dor menstrual, mas o tipo de estudo não permite excluir um efeito placebo. Os resultados justificam a realização de estudo clínico randomizado para confirmar ou não esse efeito

Towards a coherent industrial safety and environmental risk management philosophy in the United Kingdom.

Industrial risk management and pollution control strategies have been topics of active review in the UK during the past decade. Ultimate goals are the full accounting of the costs and benefits of remedial measures as a means of achieving more efficient and equitable decision processes, which are also transparent and reproducible. Considerable progress has been made in defining a coherent architecture for the management of human health risks, and analogous work is now underway in the environmental arena. Current and proposed approaches to the management of risk and the environment are based on constrained optimisation. That is, providing that risks or pollution loadings are within tolerable bounds, the aim is to achieve a reasonable balance between the costs of abatement measures and the benefits gained, with both expressed in monetary terms so far as this is possible. The same applies in the context of major accidents, though fundamental questions remain over the handling of societal risk

Risk management and consumer safety.

Risk assessment and risk management techniques are being developed in many fields as an aid to safety investment decision making. Already these techniques are having impacts upon aspects of consumer safety which overlap with other sectors where safety is important and where these methods are being applied. Recent examples where this has happened range from public transportation to the safety of children's playgrounds. This paper reports on progress in risk management in some of these sectors. Key elements include the notion of 'acceptabl' and 'tolerabl' risk, the optimisation of safety according to principles known as ALARP (as low as reasonably practicable) or ALARA (as low as reasonably achievable), and the use of quantitative methods such as cost-benefit analysis as an aid to decision making. Attention is drawn to a number of factors which consumer safety practitioners may wish to consider should it be decided to follow the trend towards a risk-based approach to the management of consumer safety