[The relationships between recovery and teachers' exhaustion and performance: mediational role of work-related self-efficacy]. / Psychiczna regeneracja po pracy a wyczerpanie i wydajnosc nauczycieli: mediujaca rola przekonan o wlasnej skutecznosci zawodowej.

BACKGROUND: The aim of the study was to better understand the process through which recovery leads to teachers' exhaustion and performance. The direct and the indirect, i.e., mediated by teacher' work-related self-efficacy, effects of recovery on exhaustion and job performance were measured. To assessment of recovery, the Polish version of the Work-Related Rumination Scale (W-RRS) was developed. It measures detachment, affective rumination and problem-solving pondering. The psychometric properties of this tool constitute an additional contribution to the article. MATERIAL AND METHODS: The study was conducted among a group of primary and secondary school teachers (N = 503). The factor structure of the W-RRS scale was checked using confirmatory factor analysis (CFA), its reliability by using of Cronbach's α measure, and its theoretical validity by means of correlation of main variables with criterion variables. Hypotheses related to direct and mediation effects were verified using structural equation modeling (SEM). RESULTS: The obtained results confirmed the criterion and construct validity and reliability of the W-RRS. It has been also shown that detachment is directly negatively associated with exhaustion (but not with performance), affective rumination is a predictor of higher exhaustion and lower job performance, and problem-solving pondering is related to job performance (but not to exhaustion). Self-efficacy mediates the effect of 2 (out of the 3) types of recovery on exhaustion and job performance, such that high levels of problem-solving pondering and low levels of affective rumination translate into high self-efficacy, which in turn leads to lower exhaustion and higher job performance. CONCLUSIONS: The recovery methods have various implications for functioning of teachers. While detachment and problem-solving pondering seem to promote it, affective rumination intensifies exhaustion and reduces performance. The mediator of the recovery-psychological well-being relationship is self-efficacy. The W-RRS questionnaire can be used to assessment of rumination among teachers. Med Pr Work Health Saf. 2024;75(2):143-158.

Standing and sitting postures at work and symptoms of venous insufficiency - results from questionnaires and a Doppler ultrasound study.

Chronic venous insufficiency is the most common vascular disease. One of the major risk factors for its development is long-term sitting or standing in the same position and the nature of the work performed. This study aimed to evaluate the incidence of chronic venous insufficiency in a group of persons employed in workplaces with a predominance of standing or sitting positions, and to determine work-related and non-work risk factors. The research used two tools: questionnaires and medical examinations. The survey comprised 500 people, including 238 men (47.6%) and 262 women (52.4%), aged 25-60 years, 39.75 ± 10.80 years old on average. In addition, a group of 100 randomly selected people was subjected to medical examinations to confirm or exclude chronic venous insufficiency symptoms in the study group. The study showed a statistically significant correlation between postures adopted at work and the symptoms of chronic venous insufficiency of the lower limbs.

How posture influences venous blood flow in the lower limbs: results of a study using photoplethysmography.

Prolonged standing or sitting is one of the factors for chronic venous insufficiency. The aim of the study was to determine the impact of static load of the lower limbs on the functioning of the venous system. The study included 10 healthy young participants, with no peripheral venous disease. All participants took part in examinations in two variants: variant 1, sitting for 20 min with the lower limbs bent in the knee joints at 90°; variant 2, standing for 20 min with no additional load. Before and after each test, the venous refilling time (VRT) was determined using photoplethysmography. Statistical analysis demonstrated that the VRT was significantly shortened only after application of variant 2. Furthermore, even variants with small loads applied to healthy young participants can induce in them effects on the parameters describing the peripheral circulation.

Changes in the peripheral blood flow in legs in response to the cold: own studies using plethysmography.

The thermal environment in the workplace is an important factor which affects workers' health. During 2011 in Poland, 14,781 workers were exposed to a cold working environment, i.e., 3.8% of persons employed in hazardous work conditions. The aim of this study was to determine the cardiovascular response to continuous (4 °C for 60 min) and intermittent (10 min at 4 °C and 10 min at room temperature alternately) exposure to the cold in 30 healthy men aged 20-27 years. Peripheral blood flow was assessed with impedance plethysmography. Heart rate and arterial blood pressure were monitored with the Holter system. Having assessed the results, it is difficult to say which kind of exposure has a more severe impact on the cardiovascular system. Longer observation and a more detailed analysis would be necessary (e.g., Doppler echocardiography).

Changes in the central and peripheral circulatory system in response to the cold: own studies using impedance plethysmography and Doppler ultrasound.

The aim of the study was to determine the cardiovascular response to continuous (4 °C for 60 min) and intermittent (10 min at 4 °C and 10 min at room temperature alternately) exposure to the cold in 30 healthy young men. The subjects were equipped with a set of identical clothing (insulation 2.1 clo) and during the stay in the chamber and outside performed the same activities, i.e., walking on a treadmill at a speed of 0.5 km/h. The tests included assessing the central circulatory system using the Holter system and assessing the peripheral circulatory system using impedance plethysmography and Doppler ultrasound. The analysis of the parameters that describe the central and peripheral circulation poses a difficulty in determining which variant of exposure constitutes a greater load on the circulatory system. It should be noted that even the conditions used in the study may cause adverse effects in the cardiovascular system.

The Effect of Comprehensive Musculoskeletal Rehabilitation on Clinical Status of Ankylosing Spondylitis Patients.

BACKGROUND: This study aimed to compare the effectiveness of conventional and cryotherapy-based rehabilitation with respect to its impact on selected clinical parameters in AS patients. MATERIAL AND METHODS: Fifty working males aged 22-66 years were included in this study. Twenty-five of them underwent cryotherapy-based rehabilitation (cryogenic chamber, local cryotherapy; individual, instrumental, and nonweight-bearing exercises) for 3 weeks. The others received 3 weeks of conventional rehabilitation (magnetic field therapy; electrotherapy; individual and instrumental exercises). The patients were examined at three time points: before rehabilitation, immediately after its completion and at a three-month follow-up visit. The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) was used to assess disease severity, the Bath Ankylosing Spondylitis Functional Index (BASFI) was used to assess musculoskeletal function and a visual analog scale (VAS) was used to assess pain. A global health index was also employed to assess patients' overall well-being. RESULTS: Cryotherapy-based rehabilitation improved the following parameters: BASDAI (P<0.001, P<0.001), BASFI (P<0.001, P=0.007), VAS (P<0.007, P=0.001) and global health index (P<0.001, P<0.001) at the second and third assessment, respectively. Conventional rehabilitation improved the BASDAI (P<0.001), VAS (P=0.029), and overall well-being (P<0.030) at the second assessment. Cryotherapy-based rehabilitation was more effective than conventional rehabilitation with respect to BASFI [F(2, 82)=6.571; P=0.004; eta2=0.120] and overall well-being [F(2, 96) =5.018; P=0.008; eta2=0.095)]. CONCLUSIONS: 1. Comprehensive rehabilitation in ankylosing spondylitis has a positive effect on patients' clinical status. 2. Rehabilitation involving cryotherapy is more effective in improving musculoskeletal function and overall well-being compared to conventional rehabilitation. 3. Cryotherapy-based rehabilitation significantly reduces the intensity of pain experienced by AS patients and decreases disease activity, with the positive effect maintained at 3 months post rehabilitation.

Complex rehabilitation and the clinical condition of working rheumatoid arthritis patients: does cryotherapy always overtop traditional rehabilitation?

AIM: Rehabilitation slows the progress of rheumatoid arthritis (RA) and prevents progression of disability. This study aimed to compare the impact of two rehabilitation programmes on pain, disease activity, locomotor function, global health and work ability forecast in RA patients. MATERIALS AND METHODS: Sixty-four employed women aged 24-65 years participated in the study. All patients underwent individual and instrumental kinesiotherapy. Thirty-two patients underwent cryogenic chamber therapy and local cryotherapy as well as non-weight-bearing, instrumental and individual kinesiotherapy. The remaining 32 patients received traditional rehabilitation in the form of electromagnetic and instrumental therapy, individual and pool-based non-weight-bearing kinesiotherapy. Rehabilitation lasted 3 weeks. Patients were examined three times: prior to rehabilitation, after 3 weeks of therapy and 3 months after completion of rehabilitation. The following study instruments were used: to assess disease activity: DAS-28; functional impairment: HAQ-DI; pain severity: VAS; patients' overall well-being: a scale from 0 to 100 (Global Health Index); and patients' own prognosis of fitness for work: the 6th question from Work Ability Index (WAI). Statistical analysis of data was performed using the STATISTICA 8.0 package. Mixed-design two-way analysis of variance was used for hypothesis testing. RESULTS: All patients improved after rehabilitation. The group of patients those who underwent cryotherapy had improved DAS-28, HAQ-DI, VAS and global health scores immediately following the 3-week rehabilitation programme (p < 0.001, p = 0.001, p = 0.007 and p < 0.001, respectively), as well as at the 3-month follow-up (p < 0.001, p < 0.001, p = 0.009 and p < 0.001, respectively). Rehabilitation using cryotherapy resulted in greater improvement in disease activity DAS-28 [F(2,105) = 5.700; p = 0.007; η(2) = 0.084] and HAQ-DI locomotor function scores [F(2,109) = 6.771; p = 0.003; η(2) = 0.098] compared to traditional rehabilitation. The impact of both forms of rehabilitation on patients' own prognosis of work ability in the next 2 years was not significant. Results of patients who underwent traditional approach showed decreased disease activity following the initial 3-week period; however, this improvement did not sustain to the end of follow-up, 3 months later. CONCLUSIONS: Complex rehabilitation in RA has a positive effect on patients' clinical condition. The rehabilitation programme that includes cryotherapy overtops traditional rehabilitation, particularly as regards improvement in locomotor function, disease activity and sustaining willingness to continue working and exerts long-lasting effect. IMPLICATIONS FOR REHABILITATION: Rehabilitation using cryotherapy is more effective in improving locomotor function, decreasing disease activity and sustaining willingness to continue working compared to traditional rehabilitation. Rehabilitation using cryotherapy significantly reduces the intensity of pain experienced by patients with RA, and this positive effect is maintained at 3 months post-rehabilitation. Complex rehabilitation, particularly treatment using cryotherapy, improves patients' subjective assessment of their overall well-being and perception of their disease. Complex rehabilitation in rheumatoid arthritis has a positive effect on patients' clinical condition.

Occupational exposure to natural UV radiation and premature skin ageing.

The skin is the part of the human body most vulnerable to ultraviolet (UV) radiation. The spectrum of the negative effects of UV radiation on the skin ranges from acute erythema to carcinogenesis. Between these extreme conditions, there are other common skin lesions, e.g., photoageing. The aim of this study was to assess the skin for signs of photoageing in a group of 52 men occupationally exposed to natural UV radiation. There were 2 types of examinations: an examination of skin condition (moisture, elasticity, sebum, porosity, smoothness, discolourations and wrinkles) with a device for diagnosing the skin, and a dermatological examination. The results of both examinations revealed a higher percentage of skin characteristics typical for photoageing in outdoor workers compared to the general population.