Examining acute environmental effects on affective state, expectancy, and intention in sport climbing

Introduction

Psychological research has shown that, among other variables, affective state, expectancy, and behavioral intention influence whether or not a (physically active) behavior is performed. Environmental effects during physical activity on affective state have been well studied; however, research regarding environmental effects on expectancy or intention is limited. Sport climbing is a form of physical activity that is performed both indoors and outdoors and is therefore considered as suitable to study environmental effects. Therefore, the aim of the present study was to investigate environmental effects during sport climbing on affective state, expectancy, and intention. The nature of the relationship between some of these parameters should also be explored.

Methods

Using a within-subjects design, 48 participants were to climb both once indoors in a climbing gym and once outdoors at a crag. The design included questionnaire-based surveys at multiple time points. Affective state, expectancy, and behavioral intention were measured at different test time points.

Results

Two-factor repeated-measures ANOVAs revealed significant main effects of the factors environment (indoor - outdoor) and time (T1 - T2 - T3) for affective state, indicating more positive affective state during outdoor climbing. No environment*time interactions were found. Furthermore, significantly higher intention (d = 0.32; p = 0.032) was measured after the outdoor condition (M = 32.5, SD = 4.1) compared to the indoor condition (M = 31.2, SD = 4.7). Multiple linear regressions revealed that expectancies (measured before and after the session) significantly predicted post-climbing intention only indoors.

Conclusion

The results at least partly suggest environmental effects on behaviorally relevant variables during climbing. Outdoor climbing might provide more favorable characteristics for physically active behavior compared to indoor climbing. Health psychologists or public health professionals who focus on increasing physical activity for their clients could recommend outdoor climbing over indoor climbing.

Primary school children's health and its association with physical fitness development and health-related factors

The health status (HS) of children is influenced by a variety of factors, including physical fitness (PF) or social and environmental characteristics. We present a 4-year longitudinal study carried out with 263 primary school children. PF was assessed yearly using the German Motor Performance Test 6-18. Demographic data, leisure time behavior and socioeconomic factors were collected using questionnaires for children and parents. Based on parents' ratings in year 4, children were categorized as either "very good health status" (VGHS) or "good health status or below" (GHSB). Children with VGHS (73%) showed a larger improvement of global PF (p < 0.001), a significantly higher proportion of being/playing outside (p < 0.001), significantly lower proportions of overweight (p < 0.001), of media availability in the bedroom (p = 0.011) and of daily media consumption > 2 h (p = 0.033) compared to children with GHSB. Regarding socio-economic factors, children with VGHS revealed significantly fewer parents with lower education (p = 0.002), lower physical activity levels (p = 0.030) and lower migration background (p < 0.001). Physical fitness (p = 0.019) and outdoors exercising (p = 0.050) were the only variables to provide significantly higher chances of perceiving one's own health as very good when tested within a complex model including all the variables studied in this work. Considering the little focus on PF in the current Austrian physical education curriculum and the favorable environmental features of the Tyrolean region, more emphasis should be given to promoting didactical and pedagogical approaches that allow schoolers to be active in the nature.

Risk Factors for Accidents and Close Calls in Junior Freeriders, Adolescent Alpine Skiers and Adult Freeriders-A Comparison

Understanding factors associated with risk-taking behavior, accidents and close calls could enhance prevention strategies and thus contribute to preventing serious injury or death in the long term. The following study aims to assess these factors in junior freeride athletes in comparison with competitive alpine skiers of similar age and adult freeriders. A cross-sectional questionnaire design was used to assess risk-related variables and potential associated factors. Accident and close call involvement did not significantly differ between the groups (p > 0.080). No significant relationships between gender and risk-related variables were found (|r| < 0.26). Precautionary behavior was higher in freeride adults and freeride juniors compared to alpine skiers (p < 0.001) and deliberate risk-taking was lower in freeride adults compared to junior freeriders and alpine skiers (p < 0.001). Regression analyses revealed that the association between self-objectification and accidents was stronger in freeride juniors compared to alpine skiers of similar age and freeride adults (p < 0.049). Although accidents and close calls were similar between groups, age seems to be an associated variable to deliberate risk-taking and precautionary behavior. The relationship between accidents and self-objectification in freeride juniors implicates a need for risk education in freeriders in the sensitive phase of adolescence beyond the mere presentation of environmental dangers.

Psychometric Parameters of the Intrinsic Motivation Inventory Adapted to Physical Education in a Sample of Active Adults from Austria

Introduction. Intrinsic motivation is essential for establishing life-long positive behaviors. In Physical Education (PE), this variable may have a significant impact on students’ choice of adhering to an active lifestyle both in the short and long term. Many tools have been developed for the assessment of intrinsic motivation, among which the Intrinsic Motivation Inventory (IMI) was built based on the Self-Determination Theory. The aim of this study is to examine a version of the IMI adapted to PE (IMI-PE). Methods. A total of 660 customers of a Sports Service Center responded to the IMI-PE and 39 individuals carried out a test–retest of the tool within two weeks. Results. The initial model including the original pool of items showed low indexes of goodness of fit. However, the removal of item 6, 8, 13, and 14 led to excellent parameters for the four-factor model (CFI = 0.96, and SRMR = 0.0420). Internal consistency and reliability analyses confirmed the robustness of such model. The final IMI-PE, comprising 14 items distributed into four factors, represents a robust assessment tool for the analysis of intrinsic motivation in PE.

Climbing as an Add-On Treatment Option for Patients with Severe Anxiety Disorders and PTSD: Feasibility Analysis and First Results of a Randomized Controlled Longitudinal Clinical Pilot Trial

BACKGROUND

Exercise has considerable effects on physical and psychological health. Anxiolytic effects of climbing exercise have been found in people suffering from depression. However, there are no studies on patients with severe anxiety disorders or post-traumatic stress disorder (PTSD) practicing climbing as add-on treatment. Additionally, many studies on physical therapy fail to use adequate active control groups. Therefore, this study aimed to investigate the feasibility of a four-week climbing exercise program for patients with anxiety disorders or PTSD in comparison to a standard exercise treatment and a social control group.

METHODS

Outpatients diagnosed with anxiety disorders or PTSD (F 40, F 41, F 43.1 according to ICD-10) were randomly assigned to (a) climbing exercise (n = 27), (b) Nordic walking exercise (n = 23), or (c) control condition (n = 23) providing the same amount of social contact for eight sessions of 90 minutes each. Psychological parameters (symptom severity, worry symptoms, self-efficacy, quality of life) and biological parameters were assessed at the beginning and at the end of the four-week program. Additionally, follow-up assessments were conducted three and six months after the program ended.

RESULTS

Sixty outpatients (75% female) aged 18-65 years with a longstanding history of a mental disorder (>10 years) and classified as treatment-resistant (95%) and with averaging 3.8 psychiatric comorbidities completed the pilot trial. After participation, symptoms of anxiety disorders were significantly reduced (p = 0.003), and health-related characteristics significantly improved (depression symptoms: p < 0.001, worry symptoms: p < 0.001, self-efficacy: p < 0.001, quality of life-physical health: p = 0.002, quality of life-psychological health: p = 0.006) in all groups. The feasibility of conducting climbing exercises for the patient groups could be demonstrated, and a general acceptance in the groups was recorded. No significant time-by-group interactions were found. At the completion of the program, psychological parameters improved, while biological parameters remained the same in all three groups.

CONCLUSIONS

Participation in the climbing group as well as in Nordic walking and social contact groups demonstrated beneficial results in patients with anxiety disorders and PTSD with severe mental burden. Nevertheless, climbing did not show any additional clinically relevant benefits compared to Nordic walking or social contact. Studies with larger sample sizes and qualitative insights are needed to further evaluate the possible benefits of climbing in this population.

Intention to Engage in Mountain Sport During the Summer Season in Climate Change Affected Environments

Natural environments can make it easier to engage in regular physical activity, including mountain sport activities. However, global warming is expected to change natural environments, especially in mountainous regions with potential impacts on physical activity behavior. While there is some evidence of a reduced intention to engage in winter sport in climate change affected environments, little is known on the impact of climate change in mountain sports conducted in the summer season. Therefore, the present study aimed at comparing the effect of being exposed to a climate change affected scenario (CCA) to being exposed to a climate change unaffected scenario (CCU) on the intention to engage in summer mountain sport activities. Furthermore, we aimed to analyze the role of anticipated affective responses in the context of the Theory of Planned Behavior (TPB). Using a web-based experimental cross-sectional study design, participants were randomly allocated to scenarios of either CCA or CCU pictures. Participants were asked to complete questions about TPB variables and about affective responses referring to the displayed scenarios. Statistical analyses included tests on group differences and hierarchical linear regression analyses. TPB variables (intention to engage in summer mountain sport, attitude, and perceived behavioral control) did not show significant group differences between CCA (n = 155) and CCU (n = 156), p > 0.131; r < −0.10. Significantly lower anticipated affective valence was found in CCA compared to CCU, p < 0.001, r = −0.43. Affective valence did not significantly improve the TPB model, change in R² = 0.7%, p = 0.096. However, a higher affective valence was significantly associated with a higher attitude toward summer mountain sport, beta = 0.19, p < 0.001. Intention to engage in summer mountain sport was similar in the groups. Therefore, an immediate reduced engagement in mountain sport activities due to climate change seems unlikely in the summer season, although differentiated findings across various activities of summer mountain sport cannot be excluded. A reduced affective valence during summer mountain sport activities might occur in the presence of signs of climate change in the environment, which may lead to longer-term behavior changes in climate change affected scenarios also in the summer by repeated experiences of reduced valence.

Effects of a Two-Step Cognitive and Relaxation Training Program in Care Home Residents with Mild Cognitive Impairment

The aim of the present study was to assess the impact of a relaxation training program (RT), a cognitive training program (CT), and the combination of both on changes in cognitive status, emotional status, and experience of pain in older adults with mild cognitive impairment (MCI). Fifty care home residents underwent either RT (26 participants) or CT (24 participants) in the first training period, followed by the combined relaxation and cognitive training program in the second. Psychological tests on cognitive performance, mood disturbance/well-being, depression, and experience of pain were implemented at three time points of measurement, before (t1), after (t2) the first training period, and after the second training period (t3). Both RT and CT with the subsequent combined training program in the second training period, respectively, increased cognitive performance and well-being, and reduced mood disturbance, depression, and the experience of pain. The study showed the non-inferiority of RT in respect of cognitive and emotional status in care home residents with MCI compared to the more frequently implemented CT. Both training programs are high in acceptability and positive outcomes on cognitive, emotional, and pain status support the use of a combination of RT and CT.

The interplay of hypoxic and mental stress: Implications for anxiety and depressive disorders

Adequate oxygen supply is essential for the human brain to meet its high energy demands. Therefore, elaborate molecular and systemic mechanism are in place to enable adaptation to low oxygen availability. Anxiety and depressive disorders are characterized by alterations in brain oxygen metabolism and of its components, such as mitochondria or hypoxia inducible factor (HIF)-pathways. Conversely, sensitivity and tolerance to hypoxia may depend on parameters of mental stress and the severity of anxiety and depressive disorders. Here we discuss relevant mechanisms of adaptations to hypoxia, as well as their involvement in mental stress and the etiopathogenesis of anxiety and depressive disorders. We suggest that mechanisms of adaptations to hypoxia (including metabolic responses, inflammation, and the activation of chemosensitive brain regions) modulate and are modulated by stress-related pathways and associated psychiatric diseases. While severe chronic hypoxia or dysfunctional hypoxia adaptations can contribute to the pathogenesis of anxiety and depressive disorders, harnessing controlled responses to hypoxia to increase cellular and psychological resilience emerges as a novel treatment strategy for these diseases.

Add-on exercise interventions for smoking cessation in people with mental illness: a systematic review and meta-analysis

BACKGROUND

Smoking is the most common substance use disorder among people with mental illness. In contrast to people without mental illness, among whom the proportion of smokers has declined in recent decades, the proportion of smokers among people with mental illness remains high. There is a growing body of literature suggesting the use of exercise interventions in combination with smoking cessation in people without mental illness, but to our knowledge the available studies on this treatment option in people with mental illness have not been systematically reviewed. Therefore, this systematic review and meta-analysis aims to assess the effectiveness of exercise interventions as an adjunctive treatment for smoking cessation in people with mental illness.

METHODS

Electronic databases (PubMed, Web of Science, PsycInfo, Sport Discus and Base) were searched for randomised controlled trials and prospective single-group studies that investigated exercise interventions in combination with smoking cessation programmes alone or in comparison with a control group in people with mental illness. A meta-analysis using the Mantel-Haenszel fixed-effect model was conducted to estimate the overall effect of treatment on smoking cessation (abstinence rate at the end of the intervention and at 6-month follow-up).

RESULTS

Six studies, five randomised controlled trials and one study with a prospective single-group design, were included in the systematic review and four randomised controlled trials were included in the meta-analysis. The meta-analysis found a significantly higher abstinence rate after additional exercise at the end of the intervention [risk ratio (RR) 1.48, 95% confidence interval (CI) 1.13-1.94], but not at the 6-month follow-up (RR 1.34, 95% CI 0.89-2.04).

CONCLUSIONS

Exercise appears to be an effective adjunctive therapy to temporarily increase abstinence rates in individuals with mental illness at the end of the intervention. However, due to the small number of included studies and some risk of bias in the included studies, the results should be treated with caution. Therefore, future studies with larger samples are needed to provide a more accurate estimate of the effect in people with mental illness. Registration The systematic review and meta-analysis were registered in the International Prospective Register of Systematic Reviews (PROSPERO) (registration number: CRD42020178630).

Association of modifiable factors with the development of physical fitness of Austrian primary school children: A 4-year longitudinal study

Physical fitness (PF) shows favourable associations with several health indicators in children. Children's PF depends on a variety of non-modifiable (e.g., sex and age) and modifiable factors (e.g., weight status and sports participation). The aim of this study was to evaluate the impact of modifiable and non-modifiable factors on the development of PF during the 4 years of primary school. A longitudinal study was carried out with 265 children. PF was assessed using the German Motor Performance Test 6-18, whereas modifiable and non-modifiable factors with parent's and children's questionnaires. Total PF z-score increased by 1.4 standard deviations from 1^st to 4^th year and raw values of subtests improved by an average of about 40%. The variables "parents' physical activity", "never being overweight", "sports club participation", and "playing outside" were positively associated with PF development. The present study highlights that a variety of modifiable factors, both from children and their parents, are significantly associated with the development of children's PF during primary education. Interventions should not only focus on direct actions, such as proposing specific exercise programs, but also aim at increasing parents' awareness of their role model function in endorsing their children's healthy active lifestyle, especially at early ages.

Affective Responses to Both Climbing and Nordic Walking Exercise Are Associated With Intermediate-Term Increases in Physical Activity in Patients With Anxiety and Posttraumatic Stress Disorder - A Randomized Longitudinal Controlled Clinical Pilot Trial

BACKGROUND

Exercise programs have shown anxiolytic effects in psychiatric patients. Adherence to exercise programs and subsequent long-term lifestyle change is influenced by acute affective responses of the exercise programs. This research aimed to assess acute affective responses of two different exercise modalities compared to a non-exercise control program and its effects on persisting physical activity behavior change.

METHODS

Sixty-six outpatients diagnosed with an anxiety disorder or posttraumatic stress disorder were randomly allocated to one of three groups in a randomized longitudinal controlled clinical pilot trial: climbing (n = 26), nordic walking (n = 19), social contact control (n = 21). Affective responses were assessed pre, during, and post activity. General physical activity behavior was recorded prior to participation in the program, post program, and at follow-ups three and six months after the program.

RESULTS

Multilevel modeling analyzes of 1,066 individual data points revealed increases in affective valence in the exercise sessions compared to the social contact sessions. State anxiety decreased in the climbing group compared to the social contact group. Physical activity behavior was increased immediately following the program as well as at six months follow-up in both exercise groups. A larger increase in affective valence during and after the sessions was associated with higher physical activity post program.

CONCLUSIONS

Climbing and conventional nordic walking exercise sessions revealed positive affective changes in outpatients indicating therapeutic potential of both modalities for acute emotion regulation. In accordance with theoretical models of human behavior change, it was judged that the experience of a more pleasant affective state following the exercise sessions induced more persisting effects on physical activity behavior after the exercise programs.

TRIAL REGISTRATION

https://www.clinicaltrials.gov/ct2/show/NCT03758599, identifier: NCT03758599.

Cell wall characteristics during sexual reproduction of Mougeotia sp. (Zygnematophyceae) revealed by electron microscopy, glycan microarrays and RAMAN spectroscopy

Mougeotia spp. collected from field samples were investigated for their conjugation morphology by light-, fluorescence-, scanning- and transmission electron microscopy. During a scalarifom conjugation, the extragametangial zygospores were initially surrounded by a thin cell wall that developed into a multi-layered zygospore wall. Maturing zygospores turned dark brown and were filled with storage compounds such as lipids and starch. While M. parvula had a smooth surface, M. disjuncta had a punctated surface structure and a prominent suture. The zygospore wall consisted of a polysaccharide rich endospore, followed by a thin layer with a lipid-like appaerance, a massive electron dense mesospore and a very thin exospore composed of polysaccharides. Glycan microarray analysis of zygospores of different developmental stages revealed the occurrence of pectins and hemicelluloses, mostly composed of homogalacturonan (HG), xyloglucans, xylans, arabino-galactan proteins and extensins. In situ localization by the probe OG7-13^{AF 488} labelled HG in young zygospore walls, vegetative filaments and most prominently in conjugation tubes and cross walls. Raman imaging showed the distribution of proteins, lipids, carbohydrates and aromatic components of the mature zygospore with a spatial resolution of ~ 250 nm. The carbohydrate nature of the endo- and exospore was confirmed and in-between an enrichment of lipids and aromatic components, probably algaenan or a sporopollenin-like material. Taken together, these results indicate that during zygospore formation, reorganizations of the cell walls occured, leading to a resistant and protective structure.

A case-control study on physical activity preferences, motives, and barriers in patients with psychiatric conditions

BACKGROUND

Physical activity in individuals diagnosed with psychiatric conditions (patients) has antidepressant and anxiolytic effects, but levels of physical activity are still low in this population. This study aimed to identify physical activity preferences, motives, and perceived barriers in patients compared to individuals without a diagnosed psychiatric condition (controls).

METHODS

A total of 230 patients (age = 39.5 ± 14.0 years, 80% female) with major depression (34%), anxiety disorders (38%), or post-traumatic stress disorder (28%) completed a cross-sectional online survey to assess preferences, motives, and perceived barriers to physical activity (measured by the EMI-2). This group consisted of 100 patients with a clinical diagnosis (clinical subset) and 130 with self-reported psychiatric conditions (confirmed by the PHQ-4) from online help forums (online subset). Comparisons between patients of the clinical and the online subsets were performed and are referenced whenever significant. The patients group was compared to a healthy control group matched by sex and age (n = 230, age = 39.4 ± 14.9 years, 80% female).

RESULTS

More patients reported insufficient physical activity levels and more daily sitting hours (measured by the IPAQ) compared to controls. Patients reported lower preference in more ambitious types of physical activity, such as hiking, cycling, and running. The commonly most preferred type of physical activity in both groups was walking and yoga. Patients had fewer motives and more perceived barriers to physical activity in comparison to the control group. Some differences in motives and perceived barriers to physical activity were also found between patients of the clinical and the online subset.

CONCLUSIONS

Findings of low physical activity levels in patients are consistent with the literature. Due to the patients' lack of motivation and perception of barriers, health care providers should consider offering different and individualized forms of physical activity. Easier types of physical activity, such as walking and yoga, appear to be the most feasible and provide a good starting point to overcome perceived barriers to physical activity.

Do low-priced ski pass owners perceive a higher quality of life? A case study of the Leisure Card Tirol

OBJECTIVES

The study investigated a potential correlation between owning a superregional low-cost ski and leisure card, namely the Leisure Card Tirol (LCT), and perceived quality of life (QOL).

DESIGN

A cross-sectional, quantitative approach (online questionnaire) was chosen.

METHODS

In total, 1588 LCT users as well as 684 non-users (residents living in the Alpine region of Tyrol, Austria) were reached throughout the study period.

RESULTS

Compared to non-users, LCT users reported significantly higher scores in all domains of QOL. However, the correlation was neither mediated nor moderated by the level of general physical activity (in contrast to alpine skiing in particular).

CONCLUSIONS

As superregional low-cost leisure cards were suggested as a way of facilitating access to skiing-at least according to its buyers-owning the LCT was associated with higher perceived QOL. Subsequent research should elaborate the extent to which this correlation is causal. If there is a causal link, such cards should be actively promoted to improve/maintain residents' QOL.

Expert Views on Therapeutic Climbing-A Multi-Perspective, Qualitative Study

Therapeutic climbing (TC) is regularly used as an add-on treatment option for a variety of disorders. However, evidence on the assessment of professionals deciding on the treatment options or assessing the appropriateness of treatment options is lacking. Therefore, the aim of the present study was to assess the potential of TC as an exercise intervention from different expert perspectives. The study was designed as a qualitative, problem-centered interview experiment to assess the perspectives of pedagogues, physicians, and psychologists on exercise therapy in general and the potential of TC. The sample consisted of 30 experts (10 pedagogues, 10 physicians, and 10 psychologists) with different levels of experience in TC (ᴓage: 41.7 years, ♀ = 43%). Overall, the potential of TC as an add-on treatment option for various disorders was rated by the respondents as positive and useful. The interviewed experts believed that TC can have a decisive effect on the social, psychological, and physiological domain as a sensibly used add-on therapy. However, considering the reported potential adverse effects and the costs connected with TC, it should not be considered as a panacea. Although research in this area is still much in its infancy, the positive perspective of the professional representatives surveyed could facilitate access to TC for patients and may foster more research in this field.

Maximal Isometric or Eccentric Hamstring Strength-Which Test Modality Might Be More Suitable for Assessments in Youth Alpine Ski Racers?

Background: Physical fitness is an important component in the development of youth alpine ski racers. To write systematically planned and age-appropriate fitness programs athletes need to be physically tested at regular intervals at an early age. Although well-developed hamstring muscle strength is important for alpine ski racing performance and the prevention of serious knee injuries, it has not been well investigated, especially in youth athletes. Accordingly, the first aim of the present study was to assess the test-retest reliability of the maximum bilateral eccentric (MBEHS) and unilateral isometric (MUIHS) hamstring tests. The second aim of the present study was to assess whether the results of these two methods correlate and if it is possible to commit to one of the two methods to provide an economic test procedure. Methods: The first study included 26 (14 females/12 males) youth alpine ski racers aged between 12 and 13 years. All athletes performed two MBEHS and two MUIHS tests, 7 days apart. The intraclass correlation coefficient (ICC 3,1) and their 95% confidence intervals based on a consistency two-way mixed model were used to estimate the reliability of the two different test modalities. The second study included 61 (27 females/34 males) youth alpine ski racers aged between 10 and 13 years. All athletes performed one MBEHS and one MUIHS test. Bland-Altman plots and the 95% limits of agreement as well as correlations by Pearson (r) between the different test modalities were assessed. Results: In study 1 “poor” to “moderate” (MBEHS right leg 0.79 (0.58–0.90); left leg 0.83 (0.66–0.92); MUIHS right leg 0.78 (0.56–0.89); left leg 0.66 (0.37–0.83)) ICC values and 95% confident intervals were obtained. Standard error of measurement (SEM) between trails was between 18.3 and 25.1 N. Smallest detectable difference (SDD) was between 50.8 and 69.5 N. In study 2 mean differences between MBEHS and MUIHS was around 20 N with higher values for MBEHS. Significant moderate-to-strong correlations were found between the test modalities (r = 0.74–0.84, p <0.001). Conclusions: The MBEHS test has higher ICC values, lower CV values, higher SEM values and lower SDD values than the MUIHS test. All this suggests that the MBEHS test is more suitable than the MUIHS test to determine the maximum hamstring force in young alpine ski racers.

Acute Effects of a Single Bout of Walking on Affective Responses in Patients with Major Depressive Disorder

Exercise programs are considered an effective (add-on) treatment option for depressive disorders. However, little is known about the acute effects of exercise on affective responses in in-patient settings. Therefore, the aim of the present study was to compare the effects of a single 30-min bout of walking on affective responses to a passive control condition in patients with major depressive disorder during treatment in a mental health center. In total, 23 in-patients were exposed to two conditions (duration: 30 min) using a within-subject design: an exercise (light-moderate walking outdoors) and a passive control condition (sitting and reading). Affective responses were assessed based on the Circumplex Model in four phases: pre, during, post, and two hours following the conditions. The main results include a significantly larger pre-post increase in energetic arousal in the exercise condition compared to the control condition, p = 0.012, η_p² = 0.25, but no significantly different pre-follow-up change between conditions, p = 0.093, η_p² = 0.12. Negatively valenced affective responses showed significantly stronger pre-post decreases after the exercise condition compared to the passive control condition, p < 0.036, η_p² > 0.18. Positively valenced affective response activity showed a pre-post increase in the exercise condition and a pre-post decrease in the passive control condition, p = 0.017, η_p² = 0.23. The higher-activated, positively valenced immediate response of light- to moderate-intensity walking may serve as an acute emotion regulation in patients with major depressive disorder and provide a favorable state for adherence to exercise programs.

Editorial on the Special Issue on "Mountain Sports Activities: Injuries and Prevention"

Recreational outdoor activities like mountain sports are gaining large popularity all over the world and particularly in the Alpine regions [...].

Intention to Engage in Winter Sport in Climate Change Affected Environments

Exercise, including winter sport activities, shows positive effects on physical and mental health, with additional benefits when participating in natural environments. Winter sport activities are particularly vulnerable to climate change, since global warming will decrease the duration and amount of snow. In the context of climate change in alpine environments, little is known on the determinants of winter sport behavior. Thus, the following study primarily aimed at comparing the effect of being exposed to a climate change affected scenario (CCA) or to a climate change unaffected scenario (CCU) on the intention to engage in recreational winter sport activities. Secondly, we aimed to analyze the role of anticipated affective responses during exercising based on the Theory of Planned Behavior (TPB). An experimental cross-sectional web-based study design was used. Participants were randomly allocated to pictures of either CCA or CCU. TPB variables and affective responses with regard to the displayed scenarios were assessed. Statistical analyses included Mann-Whitney-U Tests, linear regression, and mediation analyses. Significant group differences were seen in all TPB variables, p < 0.038; −0.13 < r < −0.30, as well as in affective responses, p < 0.001; −0.24 < r < −0.85. Lower intention to engage in winter sport activities and lower anticipated affective valence during exercising was found in CCA compared to CCU. Attitude toward winter sport was significantly positively associated with intention to engage in winter sport, beta = 0.66, p < 0.001. The effect of group allocation on attitude was mediated by anticipated affective valence, indirect effect = 0.37, p < 0.001. Intention to engage in recreational winter sport activities was lower in participants exposed to the climate change affected winter sport scenario. Since affective valence seems to influence attitude and consequently intention to exercise, the role of non-cognitive variables with regard to climate change related exposure should be considered in future studies. Therefore, winter sport resorts may consider altered winter sport behaviors due to the consequences of climate change as well as the importance of providing an optimal framework to enhance affective valence of their guests in order to mitigate potential changes in winter sports behavior.

Psychological Variables Related to Developmental Changes during Adolescence-A Comparison between Alpine and Non-Alpine Sport Participants

Alpine sport is a popular form of exercise and provides several skills that are potentially relevant for positive development during adolescence. However, empirical data on differences between alpine and non-alpine sport participants in variables related to developmental changes are lacking. Therefore, the primary aim of the present study was to analyze differences in self-esteem and additional variables between adolescent alpine and non-alpine sport participants. A comparison to non-regular exercisers was conducted for self-esteem. In a cross-sectional design, information on self-esteem, sensation seeking, agency, and emotion regulation was collected in 183 adolescents [(mean age: 15.4 (SD: 2.3) years, 71.0% female)]. Alpine sport participants reported significantly higher self-esteem compared to non-regular exercisers, p = 0.003, d = 0.95, but not compared to non-alpine sport participants, p = 0.774, d = 0.06. When controlling for sex and high-risk sport engagement, alpine sport participants showed a significantly higher experience of agency compared to non-alpine sport participants, p = 0.016, d = 0.46. We conclude that alpine sport participation is less relevant with regard to self-esteem compared to regular exercise. However, the characteristics of alpine sport might provide a trigger for higher experience of agency during sport participation, potentially helping to satisfy the increased need for autonomy and independence in adolescence.

Are Respiratory Responses to Cold Air Exercise Different in Females Compared to Males? Implications for Exercise in Cold Air Environments

Research has shown that cold air exercise causes significant respiratory dysfunction, especially in female athletes. However, how female and male athletes respond to cold air exercise is not known. Thus, we aimed to compare acute respiratory responses (function, recovery and symptoms) in males and females after high-intensity cold air exercise. Eighteen (nine female) athletes completed two environmental chamber running trials at 0 °C and −20 °C (humidity 34 ± 5%) on different days in a randomized starting order. Spirometry was performed pre, 3, 6, 10, 15 and 20 min post. Respiratory symptoms were measured posttrial and heart rate and rating of perceived exertion were assessed during each trial. No significant differences in delta change (pre to post) were found at either temperature between sexes for FEV₁, FVC, FEF50% and FEF25–75%. At −20 °C, FEV₁ decreased similarly in both sexes (males: 7.5%, females: 6.3%) but not at 0 °C, p = 0.003. Postexertion respiratory function recovery and reported symptoms were not different between sexes at either temperature. These results indicate no sex-based differences in acute respiratory responses (function, recovery and symptoms) to cold air exercise. However, intense exercise at −20 °C is challenging to the respiratory system in both sexes and may lead to altered respiratory responses compared to mild winter conditions like 0 °C.

Affective responses to climbing exercises in children and adolescents during in-patient treatment for mental health disorders a pilot study on acute effects of different exercise interventions

The aim of the present study was to compare acute effects of a climbing intervention (CI) on affective responses with a different exercise intervention (swimming, SI) and an occupational therapy intervention (OTI) in children and adolescents during in-patient treatment for mental health disorders. The following study was designed as a cross-over study. Participants completed three single 60 min interventions of CI, SI and OTI. Affective responses were assessed pre and post intervention and at 20 and 40 min during intervention. The sample consisted of 33 children and adolescents in mental-health inpatient care (ᴓage: 13.3 ± 2.2 years, ♀=39.4%). A significant time effect was seen in all interventions in increasing positive and reducing negative affect, p<.028, eta²>0.144. Repeated measures ANOVAs revealed a significant time by intervention effect for affective valence (p=.011, eta²=0.09), but not for perceived activation, favouring CI over SI and OCT between pre-test and the first 20 or 40 min, respectively. All interventions showed similar effects on affective responses pre to post interventions. CI seems to increase affective valence more strongly during intervention compared to SI and OTI. The present results may have implications for therapy adherence and acute emotion regulation in children and adolescent in-patients with mental health disorders.

Acute Effects of a Short Bout of Physical Activity on Cognitive Function in Sport Students

Physical activity is a promising intervention to restore cognitive function after prolonged sedentary periods. However, little is known about the effect of short physical activity bouts on cognition especially among individuals that are used to physical activity. Therefore, the goal of the present study was to assess the impact of a single ten-minute physical activity bout on the cognitive domain of visual attention compared to sedentary behavior in a population of physically active sport students. Using a randomized controlled design, 51 healthy and physically active sport students [mean age: 22.3 (SD: 2.0) years, 33.3% female] were allocated to one of the following interventions in the break of a two-hour study course: physical activity group (running for ten minutes) and sedentary control group. Visual attention was measured post-intervention using a modified trail making test. Pre-, post-, and 30 min after intervention, perceived attention, and affective states were measured. Between-group comparisons were used to analyze whether visual attention and/or changes in perceived attention or affective states differed between groups. The physical activity group showed significantly higher visual attention post-intervention compared with the sedentary control group, p = 0.003, d = 0.89. Perceived attention, p = 0.006, d = 0.87, and arousal, p < 0.001, d = 1.68, showed a significantly larger pre- and post-intervention increase in the physical activity group compared with the sedentary control group, which was not evident 30 min after intervention. A single ten-minute running intervention in study breaks might help to restore the basal visual attentional domain of cognition after prolonged sedentary periods more effectively compared with common sedentary behavior in breaks between study lessons.

Erfassung unmittelbarer affektiver Reaktionen auf körperliche Aktivität

Zusammenfassung. Affektive Reaktionen während körperlicher Aktivität haben in den letzten Jahren vermehrtes Forschungsinteresse erfahren. In englischsprachigen Forschungsarbeiten werden vielfach die zwei Single-Item-Verfahren „Feeling Scale“ ( Hardy & Rejeski, 1989 ) und „Felt Arousal Scale“ ( Svebak & Murgatroyd, 1985 ) zur Erhebung angewendet. Für den deutschsprachigen Raum liegen bisher keine validierten Übersetzungen dieser Verfahren vor. Daher wurden 82 Personen bei einer Fahrradergometrie deutsche Übersetzungen der FS und FAS vorgelegt. Zur Prüfung der Validität wurde parallel das „Self-Assessment Manikin“-Verfahren ( Bradley & Lang, 1994 ) eingesetzt und individuelle Variationen auf Between- und Within-Person Ebene analysiert. Die Korrelationen zwischen FS und SAM Dimension Valenz ( r = .72 bis .73) sowie zwischen FAS und SAM Dimension Aktivierung ( r = .50 bis .62) waren mit den englischsprachigen Validierungsstudien vergleichbar. Auf Basis dieses Beitrags können die Möglichkeiten für die Erhebung von affektiven Reaktionen im deutschen Sprachraum erweitert werden, wobei Validierungen in weiteren Personengruppen empfehlenswert sind.

Mortality in Different Mountain Sports Activities Primarily Practiced in the Winter Season-A Narrative Review

Annually, millions of people engage in mountain sports activities all over the world. These activities are associated with health benefits, but concurrently with a risk for injury and death. Knowledge on death rates is considered important for the categorization of high-risk sports in literature and for the development of effective preventive measures. The death risk has been reported to vary across different mountain sports primarily practiced in the summer season. To complete the spectrum, the aim of the present review is to compare mortality rates across different mountain sports activities primarily practiced in winter. A comprehensive literature search was performed on the death risk (mortality) during such activities, i.e., alpine (downhill) skiing, snowboarding, cross-country skiing, ski touring, and sledging. With the exception of ski touring (4.4 deaths per 1 million exposure days), the mortality risk was low across different winter sports, with small activity-specific variation (0.3–0.8 deaths per 1 million exposure days). Traumatic (e.g., falls) and non-traumatic (e.g., cardiac death) incidents and avalanche burial in ski tourers were the predominant causes of death. Preventive measures include the improvement of sport-specific skills and fitness, the use of protective gear, well-targeted and intensive training programs concerning avalanche hazards, and sports-medical counseling for elderly and those with pre-existing diseases.

Effectiveness of a Mini-Trampoline Training Program on Balance and Functional Mobility, Gait Performance, Strength, Fear of Falling and Bone Mineral Density in Older Women with Osteopenia

Purpose

To evaluate the effectiveness of a combined balance-, strength-, and jumping-exercise intervention on a mini-trampoline performed by older women with osteopenia on static balance and functional mobility, gait speed, strength of the upper and lower limbs, fear of falling, as well as to investigate its influence on bone mineral density (BMD).

Patient and methods

Using a randomized controlled study design, participants (range: 56-83 years) were assigned either to the intervention group (IG; n=20, mean age 69.6 ± 5.3 years) performing a specifically tailored intervention on a mini-trampoline or to the control group (CG; n=20, 67.4 ± 6.8 years), that did not undertake any intervention beyond regular osteopenia treatment. The intervention was performed twice a week for 12 weeks, each session lasting 45-60 mins and consisted of balance, strength and jumping exercises. Static balance and functional mobility was measured by one-leg stance (OLS) and timed up and go test (TUG). Upper and lower limb strength was evaluated by the arm curl test (ACT) and the 30-s chair stand test (CST) whereas gait speed was measured by the 6 m walking test (WT). Fear of falling was measured using the Falls Efficacy Scale - International (FES-I). BMD was measured at the lumbar spine and femoral neck using Dual-energy X-ray absorptiometry (DXA).

Results

Significant interactions (group x time) were found for all parameters (p<0.001) except for BMD, measured at the lumbar spine (p=0.064) and femoral neck (p=0.073). All test parameters of balance and functional mobility tests (OLS, TUG), strength tests (ACT, CST), WT, FES-I and BMD (femoral neck) showed significant improvement in the IG (p<0.05).

Conclusion

The combined 12-week intervention was highly effective in improving balance and functional mobility, strength, gait performance and fear of falling in patients with osteopenia.

Effects of a heat and moisture exchanger on respiratory function and symptoms post-cold air exercise

PURPOSE

Exercise at temperatures below -15°C induces drying and cooling of lung airways which causes exercise-induced bronchoconstriction (EIB) and respiratory symptoms, especially in winter sport athletes. The objective of this study was to evaluate whether a heat and moisture exchanger (HME) worn during intense cold air exercise improves lung function and reduces respiratory symptoms in healthy winter sport athletes.

METHODS

Seven active males and six active females (maximum oxygen uptake 61.9 ± 6.9 and 52.2 ± 5.3 mL/kg/min), all active or former winter sport athletes, completed running trials with and without HME in random order on 2 days in an environmental chamber (-20°C temperature, humidity 46.2%). Forced vital capacity (FVC), forced expiratory volume in 1 second (FEV₁ ), forced expiratory flow at 25%-75% (FEF_25%-75% ), and FEF at 50% (FEF_50% ) were measured pre- and post-exercise (3, 6, 10, 15, and 20 minutes). Respiratory symptoms were reported after exercise.

RESULTS

Significant interaction effects were observed for FEV₁ and FEF_25%-75% . Mean decrease of FVC (-5.9%, P ≤ .001) and FEV₁ (-4.2%, P = .003) was largest 3 minutes post-exercise without HME. There was an increase of FEV₁ , FEF_25%-75% , and FEF_50% post-exercise compared to pre-exercise with HME. More respiratory symptoms overall were reported without HME (P = .046).

CONCLUSION

Intense cold air exercise likely causes transient acute bronchoconstriction and symptoms of cough in individuals participating in winter sports. However, this study finds that the application of an HME during intense cold air exercise improves lung function and reduces prevalence of EIB-associated symptoms compared to unprotected intense cold air exercise.

[German Language Version and Validation of the Risk-Taking Behaviour Scale (RBS-K) for High-Risk Sports]

BACKGROUND

 High-risk sports, particularly climbing, kayaking and extreme skiing, have become increasingly popular. The most widely used psychological survey instrument with regard to risk behaviour in sports is the Sensation Seeking Model, mostly assessed by the Sensation Seeking Scale (SSS-V). Until recently, the literature discussed risk behaviour solely through this model. However, this scale does not measure risk-taking behaviours. In contrast, the Risk-Taking Behaviour Scale (RBS-K) is a three-item scale that measures risk behaviour in high-risk sports. This study aimed to validate a German language version of the RBS-K.

METHODS

 The RBS-K was translated and back-translated between English and German. High-risk sports participants (n = 2399) completed the German version of the RBS-K. Of those participants, 820 completed the RBS-K in person as part of a field survey and 1579 participated in an online survey. To validate the questionnaire, the SSS-V, accident involvement, age and sex were evaluated. The RBS-K divides the sample into deliberate risk takers (mean + standard deviation) and risk-averse persons (mean - standard deviation). We tested for internal consistency and correlations with SSS-V, age, sex and accident involvement. Group differences were calculated between deliberate risk takers and risk-averse persons.

RESULTS

 For internal consistency, we obtained a Cronbach's alpha of 0.56 and a McDonald's omega of 0.63. Significant correlations were shown between RBS-K and SSS-V as well as age and sex. Compared to risk-averse persons (n = 643, 26.8 %), deliberate risk takers (n = 319, 13.3 %) scored significantly higher in sensation seeking, were significantly younger and primarily male and had a significantly higher accident involvement.

CONCLUSION

 The RBS-K discriminates well for age, sex and accident involvement. Also, correlations between the RBS-K and the well-established SSS-V are acceptable. With regard to the results and its compact design, the scale seems to be well suited for field surveys. We discuss the relatively modest internal consistency in the context of the small number of items and the different dimensions of risk-taking.

Factors Associated with Physical Fitness among Overweight and Non-Overweight Austrian Secondary School Students

The aim of the study was to evaluate factors associated with physical fitness (PF) among overweight and non-overweight Austrian secondary school students. PF was measured using the German motor test (DMT) 6-18 and students were asked about sex, migration background, weekly leisure time physical activity and daily electronic media use. In total 560 adolescents (56.6% female) with a mean age of 15.4 ± 1.4 years and a mean body mass index (BMI) of 22.5 ± 4.2 kg/m² were evaluated with 130 (23.2%) students classified as overweight or obese. For the total cohort, results of the multiple linear regression analysis (R2 = 0.34) revealed that a younger age (β = -0.16), no migration background (β = 0.13), a lower BMI (β = -0.29), a higher weekly leisure time physical activity (β = 0.34) and a lower daily electronic media use (β = -0.15) were associated with increased PF. Separate regression analyses for non-overweight and overweight students showed similar regression coefficients except for BMI. In conclusion, the positive influence of modifiable factors such as lower BMI, higher self-reported weekly leisure time sports activity and lower self-reported daily electronic media use should be considered already at young ages to increase physical fitness in overweight and non-overweight youth.

Are Risk-Taking and Ski Helmet Use Associated with an ACL Injury in Recreational Alpine Skiing?

According to the risk compensation hypothesis, the use of a ski helmet might provide a false sense of security, resulting in a riskier behavior by skiing faster or more aggressively, which might lead to an increased injury risk. Injury of the anterior cruciate ligament (ACL) is a common diagnosis in downhill skiers. Thus, the aim of the study was to evaluate the potential impact of risk-taking and ski helmet use on ACL injury risk in recreational skiing. Eighty-two ACL injured and 446 uninjured skiers with a mean age of 37.3 ± 11.9 years (52% females) were surveyed during the winter season 2018/19 about age, sex, self-reported risk-taking behavior, self-reported skill level, perceived speed, and ski helmet use. Multiple regression analysis revealed that older age (OR: 1.3, 95% CI: 1.2–1.4), riskier behavior (OR: 5.4, 95% CI: 2.8–10.5), and lower skill level (OR: 6.7, 95% CI: 3.4–13.3) were found to be factors associated with ACL injury, while ski helmet use was not. In conclusion, no support for the risk compensation hypothesis was found with regard to ACL injuries. Therefore, we doubt that ski helmet use increases the risk for ACL injury and recommend wearing a ski helmet due to reported protective effects.

Effects of Visual and Auditory Perturbations on Ski-Specific Balance among Males and Females-A Randomized Crossover Trial

Injuries in skiing show sex-specific differences, especially when visual perception is reduced. Reduced visual perception impairs balance, which plays an important role in avoiding skiing injuries. However, males and females might cope differently with reduced visual perception. Thus, the aim of this study was to evaluate sex-related effects of environmental perturbations (reduced visual perception and listening to music) on ski-specific balance. Using a crossover design, ski-specific balance was tested in 50 young adults (50% female) in four conditions: with and without listening to music and/or with and without reduced visual perception (ski goggles with occlusion foil). A four × two (condition by sex) mixed ANOVA revealed a significant condition by sex interaction, partial η² = 0.06. Females showed an increase in balance from the condition without music/with normal visual perception to the condition with music/with normal visual perception, while males showed a decrease. Balance was significantly higher in females compared to males, partial η² = 0.31. The findings suggest that balance is affected differently by environmental perturbations in females and males. However, the differences observed were not in line with our initial hypotheses, which might be because the model was too simplistic for how visual/auditory perturbations may affect balance.

Is the Effect of Physical Activity on Quality of Life in Older Adults Mediated by Social Support?

Increasing evidence suggests positive associations between physical activity, social support, and quality of life in later life. However, the role of physical activity and social support in the influence on quality of life is unclear. In this viewpoint, definitions of central terms and key research findings on factors influencing quality of life in older adults are provided. We highlight the importance of both a physically active lifestyle and high social support in positively influencing quality of life. However, we question the direct effect of physical activity on quality of life and present data of a cross-sectional study to support the assumption that the effect of physical activity on quality of life might be influenced by perceived social support. In this cross-sectional study, self-reported physical activity, social support, and quality of life were assessed in a nonclinical sample of 100 adults aged between 60 and 80 years. Statistical analyses included correlation analyses and covariate-controlled mediation analyses. The results confirmed the research findings on positive correlations between all domains of quality of life and both physical activity and social support. Mediation analyses indicated that the effect of physical activity on all domains of quality of life was at least partially mediated by social support, when controlled for covariates. Based on the findings of published evidence and this cross-sectional study, a socially and physically active lifestyle is recommended for older adults to positively influence quality of life. However, the well-documented effect of physical activity on quality of might be an at least partially mediated effect by perceived social support. Practical and research-related implications of a potential indirect effect are discussed. Further prospective research is warranted to clarify the relationship between the variables.

Biomineralization of strontium and barium contributes to detoxification in the freshwater alga Micrasterias

The unicellular model alga Micrasterias denticulata inhabits acid peat bogs that are highly endangered by pollutants due to their high humidity. As it was known from earlier studies that algae like Micrasterias are capable of storing barium naturally in form of BaSO₄ crystals, it was interesting to experimentally investigate distribution and sequestration of barium and the chemically similar alkaline earth metal strontium. Additionally, we intended to analyze whether biomineralization by crystal formation contributes to diminution of the generally toxic effects of these minerals to physiology and structure of this alga which is closely related to higher plants. The results show that depending on the treatment differently shaped crystals are formed in BaCl₂ and Cl₂Sr exposed Micrasterias cells. Modern microscopic techniques such as analytical TEM by electron energy loss spectroscopy and Raman microscopy provide evidence for the chemical composition of these crystals. It is shown that barium treatment results in the formation of insoluble BaSO₄ crystals that develop within distinct compartments. During strontium exposure long rod-like crystals are formed and are surrounded by membranes. Based on the Raman signature of these crystals their composition is attributed to strontium citrate. These crystals are instable and are dissolved during cell death. During strontium as well as barium treatment cell division rates and photosynthetic oxygen production decreased in dependence of the concentration, whereas cell vitality was reduced only slightly. Together with the fact that TEM analyses revealed only minor ultrastructural alterations as consequence of relatively high concentrated BaCl₂ and Cl₂Sr exposure, this indicates that biomineralization of Sr and Ba protects the cells from severe damage or cell death at least within a particular concentration range and time period. In the case of Sr treatment where ROS levels were found to be elevated, hallmarks for autophagy of single organelles were observed by TEM, indicating beginning degradation processes.

Preparation for Endurance Competitions at Altitude: Physiological, Psychological, Dietary and Coaching Aspects. A Narrative Review

It was the Summer Olympic Games 1968 held in Mexico City (2,300 m) that required scientists and coaches to cope with the expected decline of performance in endurance athletes and to establish optimal preparation programs for competing at altitude. From that period until now many different recommendations for altitude acclimatization in advance of an altitude competition were proposed, ranging from several hours to several weeks. Those recommendations are mostly based on the separate consideration of the physiology of acclimatization, psychological issues, performance changes, logistical or individual aspects, but there is no review considering all these aspects in their entirety. Therefore, the present work primarily focusses on the period of altitude sojourn prior to the competition at altitude based on physiological and psychological aspects complemented by nutritional and sports practical considerations.

Long-term effect of migration background on the development of physical fitness among primary school children

BACKGROUND

Children with a low socioeconomic status and migration background are more likely to exhibit unfavorable health behavior patterns and higher BMI scores as well as lower physical activity and physical fitness.

AIM

To evaluate the effect of migration background on the development of physical fitness among primary school children from first to third grade.

METHODS

In this longitudinal study, height, weight, and physical fitness of primary school children from Tyrol/Austria were measured five times over a period of 2.5 years using the German motor performance test DMT 6-18 consisting of eight items testing different subdomains of physical fitness.

RESULTS

A total of 266 children (45% girls) participated in all five tests, of which 69 (26%) children reported to have a migration background (MB). Mixed-model ANOVA did not reveal a significantly different development of physical fitness (according to the mean total Z-score of DMT 6-18) over time, P = 0.883, partial ƞ²  < 0.01. However, children with MB showed significantly lower physical fitness compared to children without MB, P < 0.001, partial ƞ²  = 0.06. Controlling for BMI and age did not alter the interpretation of the results. Analyses of the single test items revealed significant differences in motor tests involving strength and endurance.

CONCLUSION

Primary school children with and without MB significantly increased their physical fitness over time in a comparable manner. However, children with MB showed a significantly lower physical fitness at all test time points, which was only partly explained by a higher mean BMI in children with MB. Children with MB outreached the mean baseline fitness level of children without MB not until the fourth test time point, that is after two years. Therefore, a special focus on physical fitness particularly including strength and endurance capacities should be directed to children with MB already in young ages.

Alcohol Consumption and Physical Activity in Austrian College Students-A Cross-Sectional Study

BACKGROUND

The age of college students is considered as crucial for developing health-related behaviors, e.g., alcohol consumption or a physically active lifestyle. Previous research reported a positive relationship between alcohol consumption and physical activity (PA) in college students. However, the main body of research was done in students from the United States who might differ from European students.

OBJECTIVES

Thus the aim of this study was to analyze the relationship between alcohol consumption and PA in a sample of Austrian college students.

METHODS

In a cross-sectional design, 861 Austrian students from various study fields responded to a web-based questionnaire. Self-reported alcohol consumption, PA, and relevant sociodemographic variables were assessed. Multiple regression analyses were used to study the relationship between alcohol consumption and PA.

RESULTS

In none of the regression models, a significant relationship between alcohol consumption and PA was found. There was a significant influence of sex, age, relationship status, education level, and study field on alcohol consumption. Male, older, and undergraduate students studying social sciences without a relationship reported higher alcohol consumption. Conclusions/Importance: The results do not support a general relationship between alcohol consumption and PA among urban Austrian college students of various study fields. Compared to other variables (e.g., sex, relationship status), PA seems to be less important in relation to the consumption of alcohol. This study challenges a global perspective on a positive relationship between alcohol consumption and PA and highlights the need for more cross-cultural investigations.

Development of physical fitness in Austrian primary school children : A longitudinal study among overweight and non-overweight children over 2.5 years

Background

Physical activity and physical fitness play an important role in the prevention of overweight and obesity in childhood and adolescence and reduce the risk of becoming overweight or obese in adulthood.

Aim

To evaluate the development of physical fitness in overweight and non-overweight primary school children from the first to third grades.

Methods

Using a longitudinal study design, body height and weight as well as physical fitness of primary school children from Tyrol, Austria were measured five times during a period of 2.5 years using the German motor performance test (DMT 6–18).

Results

In total, 266 children (55% boys) with a mean age of 6.4 ± 0.5 years at baseline participated. The proportion of overweight children was 11% at baseline and 22% at the fifth time point. Overweight children showed a significantly lower physical fitness level (mean total z‑score of DMT6–18) at all 5 time points (Hedges g: 0.64–1.09). Repeated measurement analyses of variances showed a significant increase of physical fitness over time among overweight (partial η²: 0.12) and non-overweight (partial η²: 0.29) children. With respect to gender, physical fitness significantly increased over time among overweight (partial η²: 0.20) and non-overweight (partial η²: 0.28) girls, as well as among non-overweight boys (partial η²: 0.31) but not among overweight boys (partial η²: 0.07).

Conclusion

Overweight and non-overweight primary school children significantly increased their physical fitness over the study period; however, overweight children showed a significantly lower physical fitness level at all test time points and did not even achieve the mean baseline fitness level of non-overweight children. With respect to the increasing percentage of overweight children over the study period, evidence-based preventive measures to reduce overweight and increase physical fitness should be implemented at the earliest in primary schools with a special focus on overweight boys.

Fall-related accidents among hikers in the Austrian Alps: a 9-year retrospective study

Objective

To analyse the circumstances of fatal and non-fatal mountain hiking accidents caused by falls.

Methods

The study was designed as a retrospective analysis. Mountain hiking accidents caused by falls were documented during a 9-year period (2006–2014). After screening of all data for potential exclusion criteria the final sample size of 5368 accidents and 5665 victims was included into the analyses. Main outcome measures were details about accidents, victims, type of trail and surface.

Results

The annual number of accidents showed a continuous increase from 467 in 2006 to 700 in 2014. In total, 5.8% of all victims died during the 9-year period. 75.3% of the hikers fell during descent and 80.9% of the victims had their accident on a marked hiking trail or small path. The sex ratio for non-fatal accidents was 55% female and 45% male; for fatal accidents the female-to-male ratio was 28%:72%. Mean age of all victims was 52.5±17.5 years and victims of fatalities were about 5 years older compared with victims of non-fatal accidents (57.5±16.5 vs 52.2±17.5 years, P<0.01).

Conclusion

Descent is the most risky part for accidents caused by falls during mountain hiking. Male hikers are at greater risk for fatalities independent of age and this is associated with accidents occurring in pathless terrain. The death rate from falls was 6%. We recommend a critical self-assessment of the individual capabilities and mountain hiking skills and adequate planning of the hiking tours for mountain hikers.

Seven Passive 1-h Hypoxia Exposures Do Not Prevent AMS in Susceptible Individuals

PURPOSE

The present study evaluated the effects of a preacclimatization program comprising seven passive 1-h exposures to 4500-m normobaric hypoxia on the prevalence and severity of acute mountain sickness (AMS) during a subsequent exposure to real high altitude in persons susceptible to AMS.

METHODS

The project was designed as a randomized controlled trial including 32 healthy female and male participants with known susceptibility to AMS symptoms. After baseline measurements, participants were randomly assigned to the hypoxia or the control group to receive the preacclimatization program (seven passive 1-h exposures within 7 d to normobaric hypoxia or sham hypoxia). After completing preacclimatization, participants were transported (bus, cog railway) to real high altitude (3650 m, Mönchsjoch Hut, Switzerland) and stayed there for 45 h (two nights). Symptoms of AMS and physiological responses were determined repeatedly.

RESULTS

AMS incidence and severity did not significantly differ between groups during the high-altitude exposure. In total, 59% of the hypoxia and 67% of the control group suffered from AMS at one or more time points during the high-altitude exposure. Hypoxic and hypercapnic ventilatory responses were not affected by the preacclimatization program. Resting ventilation at high altitude tended to be higher (P = 0.06) in the hypoxia group compared with the control group. No significant between-group differences were detected for heart rate variability, arterial oxygen saturation, and hematological and ventilatory parameters during the high-altitude exposure.

CONCLUSION

Preacclimatization using seven passive 1-h exposures to normobaric hypoxia corresponding to 4500 m did not prevent AMS development during a subsequent high-altitude exposure in AMS-susceptible persons.

Prevalence of Mental Health Problems and Factors Associated with Psychological Distress in Mountain Exercisers: A Cross-Sectional Study in Austria

Knowledge about potential protective factors against mental health problems is highly needed. Regular physical activity (PA) in an outdoor environment, like mountain exercising, might reduce psychological distress. Therefore, the aims of the present study were to assess the prevalence of mental health problems in mountain exercisers and to detect factors associated with psychological distress. In a cross-sectional design, we collected self-reported data of 1,536 Austrian mountain exercisers. The prevalence of mental health problems and psychological distress (Kessler Psychological Distress Scale), the level of PA International Physical Activity Questionnaire, and affective valence during PA (Feeling Scale) were obtained. Stepwise multiple linear regression analysis was conducted to assess factors influencing psychological distress. The prevalence of mental health problems in Austrian mountain exercisers was 14%. Health-enhancing PA level and higher affective valence during PA were significantly associated with lower psychological distress. Minimal PA level was not significantly associated with lower psychological distress compared to inactive PA level. Marital status, education, alpine association membership, and body mass index did not show a significant influence on psychological distress. The prevalence of mental health problems seems to be lower in Austrian mountain exercisers compared to the European population. A health-enhancing PA level and affective valence increasing forms of PA were shown to be associated with lower psychological distress. Results might lead to interventional studies focusing on the potential of outdoor PA, e.g., mountain exercise, as an adjunct treatment in people at risk or with mental health problems.

Immediate affective responses of gait training in neurological rehabilitation: A randomized crossover trial

OBJECTIVE

To examine the immediate effects of physical therapy and robotic-assisted gait training on affective responses of gait training in neurological rehabilitation.

DESIGN

Randomized crossover trial with blinded observers.

PATIENTS

Sixteen patients with neurological disorders (stroke, traumatic brain injury, spinal cord injury, multiple sclerosis).

METHODS

All patients underwent 2 single treatment sessions: physical therapy and robotic-assisted gait training. Both before and after the treatment sessions, the self-report Mood Survey Scale was used to assess the effects of the treatment on distinct affective states. The subscales of the Mood Survey Scale were tested for pre-post changes and differences in effects between treatments, using non-parametric tests.

RESULTS

Fourteen participants completed the study. Patients showed a significant increase in activation (r = 0.55), elation (r = 0.79), and calmness (r = 0.72), and a significant decrease in anger (r = 0.64) after robotic-assisted gait training compared with physical therapy.

CONCLUSION

Affective responses might be positively influenced by robotic-assisted gait training, which may help to overcome motivational problems during the rehabilitation process in neurological patients.

Affective responses in mountain hiking-A randomized crossover trial focusing on differences between indoor and outdoor activity

INTRODUCTION

Affective responses during physical activity (PA) are important for engagement in PA programs and for adherence to a physically active lifestyle. Little is known about the affective responses to PA bouts lasting longer than 45 minutes. Therefore, the aims of the present study were to analyse acute effects on affective responses of a three-hour outdoor PA intervention (mountain hiking) compared to a sedentary control situation and to an indoor treadmill condition.

METHODS

Using a randomized crossover design, 42 healthy participants were randomly exposed to three different conditions: outdoor mountain hiking, indoor treadmill walking, and sedentary control situation (approximately three hours each). Measures included the Feeling Scale, Felt Arousal Scale and a Mood Survey Scale. Repeated measures ANOVAs were used to analyse differences between the conditions.

RESULTS

Compared to the control situation, the participants showed a significant increase in affective valence (d = 1.21, p < .001), activation (d = 0.81, p = .004), elation (d = 1.07, p < .001), and calmness (d = 0.84, p = .004), and a significant decrease in fatigue (d = -1.19, p < .001) and anxiety (d = -.79, p < .001) after mountain hiking. Outdoor mountain hiking showed significantly greater positive effects on affective valence, activation, and fatigue compared to indoor treadmill walking.

DISCUSSION

The results indicate that a three-hour PA intervention (mountain hiking) elicits higher positive and lower negative affective responses compared to a sedentary control situation and to an indoor PA condition. Outdoor mountain hiking can be recommended by health professionals as a form of PA with the potential to positively influence affective responses.

TRIAL REGISTRATION

ClinicalTrials.gov NCT02853760. https://clinicaltrials.gov/. Date of registration: 08/02/2016 (retrospectively registered). Date of enrolment of the first participant to the trial: 05/01/2014.

Is decision making in hypoxia affected by pre-acclimatisation? A randomized controlled trial

INTRODUCTION

Decision making is impaired in hypoxic environments, which may have serious or even lethal consequences for mountaineers. An acclimatisation period prior to high altitude exposures may help to overcome adverse effects of hypoxia. Thus, we investigated possible effects of short-term pre-acclimatisation on decision making in hypoxia.

METHODS

In a randomized controlled study design, 52 healthy participants were allocated to a hypoxia group (HG: short-term pre-acclimatisation by the use of intermittent hypoxia 7×1h at F_iO₂=12.6%, equivalent to 4500m) or a control group (CG: sham pre-acclimatisation 7×1h at F_iO₂=20.9%, equivalent to 600m). The number of risky decisions was assessed using the Game of Dice Task at four time points during a 12-hours stay in hypoxia (F_iO₂=12.6%).

RESULTS

42 (HG: 27, CG: 25) participants completed the study. The number of risky decisions was significantly (p=0.048 as determined by 4×2 ANCOVA) reduced in the hypoxia group compared to the control group, partial η²=0.11, when the age-effect on decision making was controlled. Self-reported positive affective valence prior to decision making was negatively related to the number of risky decisions, r<-0.38.

CONCLUSION

Short-term pre-acclimatisation might influence decision making in hypoxia in a positive way and might be considered as a risk-reducing preparation method prior to exposures to hypoxic environments. Positive affective states seem to have a medium-sized protective effect against risky decision making.

Is acute mountain sickness related to trait anxiety? A normobaric chamber study

INTRODUCTION

Some mountaineers are more prone to the occurrence of acute mountain sickness (AMS) than others. State anxiety during altitude exposure might be associated with AMS development. We hypothesized that trait anxiety might be higher in AMS cases compared to non-AMS cases. The aim of the present study was to study the relationship between AMS development and trait anxiety.

METHODS

In an observational study design, AMS incidence during a 12-hour exposure to normobaric hypoxia (F_iO₂=12.6%, equivalent to 4500m) was determined by the Lake Louise Scoring System. Trait anxiety (State Trait Anxiety Inventory) and confounding variables were assessed in a follow-up questionnaire (37months after hypoxic exposure).

RESULTS

Twenty nine participants returned the follow-up questionnaire. AMS incidence was 38%. Both unadjusted and adjusted logistic regression analyses did not reveal trait anxiety as a significant variable in relation to AMS.

DISCUSSION

Based on the findings of this preliminary study, there is no evidence that AMS development under normobaric conditions is related to trait anxiety. Differences to previous studies might be explained by the type of hypoxia, by different sample characteristics and by considering sleep disturbances in the calculation of the AMS score. However, future studies with larger sample sizes may help to clear the relationship between AMS development and the personality factor anxiety.

Predictors of doping intentions, susceptibility, and behaviour of elite athletes: a meta-analytic review

Research in doping has focused on potential intervention strategies, increasingly targeting predicting factors. Yet, findings are inconsistent, mostly athlete-centred and explain only limited variances in behaviour. This critical review aims to (a) summarize studies that identified predictors of doping intentions, susceptibility, and behaviour in elite athletes and to (b) analyse in how far previous research included aspects beyond athlete-centred approaches, such as context and sporting culture. We reviewed 14 studies that focused on elite athletes. Situational temptation, attitudes, and subjective norms seem to be strong predicting variables of doping intentions (r ≥ 0.50), but intention was no predictor for behaviour. Attitudes were a significant predictor for both, doping susceptibility (r = 0.47) and behaviour (r = 0.30). Most of the predictors are athlete-centred and ignore macro-level factors that might help to explain how certain individual traits impact on the decision making process. The findings from this review call for a critical discussion of whether current doping-prevention research needs to take new directions. We propose future research to bridge findings of psychologists and sociologists, as it appears that doping behaviour cannot be explained by ignoring the one or the other. Impacts of sporting culture that have been identified in qualitative approaches need to be integrated in future quantitative approaches to test for its external validity. Inclusion of both, micro- and macro level factors may enable an integrative prevention program that creates a sporting culture without doping.

Expression of the AtSUC1 gene in the female gametophyte, and ecotype-specific expression differences in male reproductive organs

Based on analyses in Arabidopsis thaliana ecotype C24, the AtSUC1 protein was previously characterised as a male gametophyte-specific H(+)/sucrose symporter. Later, expression analyses in ecotype Columbia-0 (Col-0) identified AtSUC1 expression also in trichomes (not detected in trichome-less C24 plants) and roots, suggesting ecotype-specific differences in AtSUC1 expression. Here, we present data on additional ecotype-specific differences in AtSUC1 expression in other tissues. Using different AtSUC1 promoter-reporter gene lines, we performed comparative analyses of AtSUC1 expression in floral tissues of C24 and Col-0 plants, and using an AtSUC1-specific antiserum, we performed immunohistochemical analyses on tissue sections from C24, Col-0, Landsberg erecta (Ler) and Wassilewskaija (Ws) ecotypes. We show that AtSUC1 expression occurs in the funicular epidermis of C24, Ler and Ws, but not in Col-0. In contrast, we observed high levels of AtSUC1 protein in pollen grains of Col-0, lower levels in pollen of C24 and Ler, and no AtSUC1 protein in Ws pollen. Moreover, our reporter gene analyses identified a previously undetected expression of AtSUC1 in the female gametophyte, and revealed that AtSUC1 expression in the funicular epidermis is absent from unpollinated siliques and is induced upon successful pollination. The impact of these findings on the potential physiological role of AtSUC1 is discussed.