Current Issues in Sport Science (CISS)最新文献

{"title":"Hypoxic, blood flow restriction, or eccentric cycling: Which training intervention is the most effective in elderly individuals?","authors":"Tom Citherlet, Gustavo R. Mota, Marco Carletta, Kevin Hayoz, Daniel Pereira Silva, Grégoire P. Millet","doi":"10.36950/2024.2ciss036","DOIUrl":"https://doi.org/10.36950/2024.2ciss036","url":null,"abstract":"Introduction \u0000The global rise in the elderly population is accompanied by an increased incidence of non-communicable diseases, including cancers, cardiovascular conditions, or sarcopenia. Therefore, it becomes crucial to find effective strategies to delay the onset or slow down the progression of these diseases. Hypoxic (HYP), blood flow restriction (BFR), and eccentric (ECC) training are promising modalities to mitigate the effects of aging. However, these training strategies have never been compared. Thus, this study aimed to evaluate whether moderate-intensity intermittent training (MIIT) combined with HYP, BFR, or ECC can induce similar or greater effects in strength and muscle mass in the elderly, compared to traditional cycling training (CON). \u0000Methods \u0000Fifty-five elderly participants completed a four-week MIIT protocol on cycle ergometers, divided into HYP, BFR, ECC, and CON groups. The HYP group trained under hypoxic conditions (inspired oxygen fraction ~14%), BFR group used occlusion cuffs applied proximally on thighs (~350 mmHg occlusion pressure), ECC group trained with an eccentric cycle-ergometer, and the CON group underwent standard cycling training. The first week consisted of 3 sets of 5 min exercise followed by 5 min rest and an additional set was added each week. All groups maintained a 60-rpm cadence, with intensity set at a 14-perceived exertion level on the 6-20 Borg scale. \u0000Strength parameters were assessed via isokinetic tests at angular velocities of 30°/s, 90°/s, and 180°/s, as well as isometric and endurance tests. Endurance strength was calculated as a percentage decrement score during 30 repetitions at 180°/s and the rate of force development was calculated on the isometric test. \u0000Muscle-bone cross-sectional area (CSA) was measured by integrating thigh circumference measured using a measuring tape, and anterior and posterior adipose tissue thickness assessed with a B-mode ultrasound. \u0000Results \u0000Post-training, all groups showed increased isometric quadriceps strength (14 ± 15%, p < 0.001) and strength at all angular velocities: 18 ± 17% and 15 ± 21% (30°/s), 17 ± 20% and 20 ± 26% (90°/s), 10 ± 14% and 10 ± 16% (180°/s) for quadriceps and hamstrings respectively, all P < 0.001. No significant group interaction effects were noted, except for hamstring strength at 30°/s (P = 0.038), with no improvements in the ECC group. No changes in the rate of force development or dynamic endurance post-training were noted. Thigh circumference increased (1 ± 2%, p = 0.008), without difference between training modalities. \u0000No significant variations in adipose tissue thickness or muscle-bone CSA occurred. The ECC group had higher training intensity (173.2 ± 7.5 W) than HYP (169.6 ± 9.8 W), BFR (169.9 ± 11.6 W), and CON (169.6 ± 8.4 W) groups (p < 0.001). Training heart rate was lower in ECC (104.5 ± 6.6 bpm) compared to BFR (117.5 ± 10.5 bpm; p = 0.007) and CON (122.2 ± 12.3 bpm; p = 0.001), but similar to HYP (112.2 ± 9.4 bpm). \u0000Discussio","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"137 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139800911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"It’s not just the heart: respiratory limitations to constant-load exercise in adult Fontan patients and potential implications for rehabilitation","authors":"Kyle G. P. J. M. Bolye, Patrick Schön, F. Beltrami, Matthias Greutmann, Christina M. Spengler","doi":"10.36950/2024.2ciss030","DOIUrl":"https://doi.org/10.36950/2024.2ciss030","url":null,"abstract":"Introduction\u0000Congenital heart defects may require surgical intervention such as the Fontan procedure that connects the systemic venous return to the pulmonary arteries. Although this procedure has increased survival, it results in reduced exercise capacity; which is reduced not only due to cardiovascular factors, but respiratory limitations as well. However, there is a lack of evidence outlining ventilatory limitations during constant-load exercise, which better represents exercise in cardiac rehabilitation programs and non-laboratory based exercise. Therefore, the aim of the present study was to compare responses to constant-load exercise in adult Fontan patients with those of healthy well-matched controls.\u0000Methods\u000014 adult Fontan patients (5F, 27 ± 6yrs) were recruited with 14 healthy matched controls. Participants performed forced vital capacity (FVC), as well as maximal inspiratory and and expiratory pressure  assessments (MIP and MEP, respectively). Patients performed an incremental cycling test (ICT) to exhaustion to determine peak work rate. Following a period of recovery, patients performed a constant-load cycling test (CLCT) at 70% of peak ICT work rate until exhaustion. Healthy subjects reproduced the exercise of their matched patient. Cardiorespiratory variables and heart rate (HR) were measured using a metabolic cart and a 12-lead electrocardiogram, respectively. Participants were asked to rate their perception of breathlessness and respiratory exertion via a visual analogue scale every 2 min and at peak exercise. Patients without cardiac pacemakers underwent involuntary assessments of respiratory muscle contractility via phrenic (n = 8) nerve magnetic stimulation before and following exercise to quantify respiratory muscle fatigue.\u0000Results\u0000Patients showed significantly reduced FVC, MIP and MEP compared to controls (all p < 0.025). Patients’ time-to-exhaustion during the CLCT was 7.1 ± 3.3 min. During CLCT vs. the ICT, patients reached maximal HR,  respiratory rate (fR), breathlessness, respiratory exertion, and leg exertion. End-exercise V̇O2 during the CLCT did not reach ICT values, with a mean difference of 1.5 ml/kg/min (p = 0.017). Controls did not reach peak ICT responses during the CLCT. During the CLCT, patients displayed significantly elevated minute ventilation (V̇E; mean difference = 21.5 L/min), fR (mean difference = 13.8 breaths-per-minute), breathlessness (mean difference = 3.4 points), and respiratory exertion (mean difference = 2.3 points), along with significantly decreased ventilatory reserve (V̇E/maximal voluntary ventilation; mean difference = 27.5%; all p < 0.002). Following the CLCT, Fontan patients showed a larger decrease in involuntary respiratory muscle contractility (15 ± 12% vs. 2 ± 11%). Finally, a decreased ventilatory reserve was significantly correlated with decreased MIP (r = 0.723, p = 0.003) and MEP (r = 0.623, p = 0.042).\u0000Discussion/Conclusion\u0000Fontan patients had a lower-than-expected time-to-exhaus","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of catecholamines stimulation via hand cooling and the priming effect on the oxygen consumption kinetics","authors":"Louis Finiel, Fabio Borrani","doi":"10.36950/2024.2ciss041","DOIUrl":"https://doi.org/10.36950/2024.2ciss041","url":null,"abstract":"Introduction \u0000Priming effect has been shown to accelerate the oxygen consumption (V̇O2) kinetics. This phenomenon could be explained by muscle oxygen (O2) enhanced delivery, motor unit recruitment or intracellular O2 enhanced utilization (Goulding et al. 2023). Catecholamines such as epinephrine (E) and norepinephrine (NE) are known to impact the cardiovascular system as well as the respiratory system and metabolic effects (Zouhal et al. 2008). The aim of this study is two folds. Observing the effect of increased E and NE induced by cold-water hand immersion on V̇O2 kinetic during heavy intensity exercise bout (HCWR). Compare the effect of cold-water hand immersion and previous HCWR on V̇O2 kinetic to see if the sympathetic system could partially explain the priming effects. \u0000Methods \u0000Ten healthy active males (mean ± SD, age 23 ± 5 years, body mass 71 ± 6.5 kg) participated in this study. An incremental test was performed on ergometer to prescribe the intensity for the HCWR exercise (∆ 25%). Participants did an 8 min HCWR normal bout (NO), followed by 8 min rest and a second bout (SB) and hand cooling bout (HC) at heavy intensity in a randomized order. For the HC condition, participants put hands in cold water (0°C) for 2 min then directly did the HCWR. Blood samples has been taken at rest, before and directly after the HCWR. \u0000Results \u0000Just before exercise, all conditions were different, but HC E (1.095 ± 0.64 nmol/ml) increased by 347% while HC NE (6.98 ± 1.89 nmol/ml) matched values from SB NE (6.89 ± 2.22 nmol/ml). At the end of exercise, no significant difference has been found between NO E (1.44 ± 1.06) and HC E (1.54 ± 1.38 nmol/ml) while SB E (2.35 ± 1.55 nmol/ml) was significantly higher than both conditions but no differences have been found between HC (20.15 ± 8.76 nmol/ml) and SB (20.41 ± 9.74 nmol/ml) NE. V̇O2 kinetic has been sped up for both HC and SB by increasing the absolute primary prime amplitude of HC (33.88 ± 0.96 ml/min/kg),SB (34.60 ± 0.86ml/min/kg) compared to NO (32.75 ± 0.65 ml/min/kg) and reducing the prime amplitude of HC (3.22 ± 0.51 ml/min/kg), SB (2.90 ± 0.64 ml/min/kg) vs NO (3.87 ±0 .56 ml/min/kg) of the slow component of V̇O2. \u0000Discussion/Conclusion \u0000Catecholamines stimulation via hand cooling accelerated the V̇O2 kinetics enhancing the primary phase and reducing the slow component. This effect seemed to follow the priming effect but with less intensity. Increased O2 delivery appeared to be a common feature of both conditions, Motor neuron excitability due to increased NE was also a likely hypothesis, as both HC and SB had the same values just before exercise. Finally, intra-muscular enhancement illustrated by improved intracellular partial pressure kinetics and mitochondrial O2 utilization might explain the effects of catecholamines and part of the priming effect. Mitochondrial “warm-up” could be influenced by both catecholamines and priming effect resulting in a better production of adenosine triphosphate. \u0000Ref","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"116 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of biomechanical risk factors for ACL injury between patients and healthy subjects during exergaming","authors":"M. Haas, A. Martin-Niedecken, Larissa Wild, Leander Schneeberger, Eveline S. Graf","doi":"10.36950/2024.2ciss045","DOIUrl":"https://doi.org/10.36950/2024.2ciss045","url":null,"abstract":"Introduction \u0000Exergaming - physically active gaming - offers great potential for rehabilitation after knee injuries in sports, as it combines physical and cognitive challenges. However, before its use in sports rehabilitation can be recommended as safe and reliable, it is necessary to assess the biomechanics associated with knee injuries - an abducted, internally rotated knee at 10-30° of flexion (Koga et al., 2010). The aim of this study was to compare knee valgus (KV) during 10-30° knee flexion between healthy individuals without previous knee injuries and patients undergoing rehabilitation after knee injuries in three exercises of a high-intensive, immersive exergame (ExerCube). \u0000Methods \u0000The kinematics of 18 healthy subjects (25.2 ± 3.3 years, 9 female) and 6 patients (25.0 ± 5.9 years, 2 female) were recorded using marker-based movement analysis (Vicon) during 25 minutes of exergame training (Sphery Racer, ExerCube). The average maximum KV angle during 10-30° knee flexion was compared between healthy subjects and patients in the squat, jump, and burpee for the right leg using a linear mixed model. \u0000Results \u0000The average maximal KV in the squat was 4.3° for healthy subjects and 4.8° for patients. In the jump, an average maximal KV of 5.9° (healthy subjects) and 6.8° (patients) was found. With an average of 6.9° in the maximal KV of healthy subjects and 8.6° in patients, the burpee showed the highest KV of all exercises. A significant main effect was found for exercise (F(2, 45) = 57.03, p < .001), but not for the difference between groups (F(1, 22) = 0.45, p = 0.51). \u0000Discussion/Conclusion \u0000There are no significant differences in KV between healthy participants and patients undergoing rehabilitation after knee injuries. This indicates that the pre-injury movement pattern was restored in the patients, and it can be assumed that the studied exercises during exergaming are safe for use in this stage of rehabilitation. \u0000References \u0000Koga, H., Nakamae, A., Shima, Y., Iwasa, J., Myklebust, G., Engebretsen, L., Bahr, R., & Krosshaug, T. (2010). Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball. The American Journal of Sports Medicine, 38(11), 2218–2225. https://doi.org/10.1177/0363546510373570","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"116 S4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fostering positive affective exercise experiences and affect-related competencies for a physically active lifestyle: The FEEL project","authors":"Martin Buehrer, S. Rosenstiel, Gorden Sudeck, Julia Schmid","doi":"10.36950/2024.2ciss033","DOIUrl":"https://doi.org/10.36950/2024.2ciss033","url":null,"abstract":"Introduction \u0000Interventions targeting physical inactive individuals have not yielded sufficient impact yet. This may be attributed to two reasons: Firstly, affective processes during physical activity (PA) are often inadequately acknowledged (e. g. shame, feeling bad; Hohberg et al. 2022). Secondly, individuals are often not empowered to PA that positively influences affective wellbeing and mental health (Sudeck & Pfeifer, 2016). The FEEL project addresses these two deficiencies by developing a program promoting pleasant experiences, affect regulation competence, wellbeing and consequently PA. \u0000The program is grounded in Ekkekakis et al.’s (2021) conceptual framework on affective exercise experiences and their antecedent appraisals. It consists of [a] an instructor workshop focused on creating an inclusive, socially supportive atmosphere. Additionally, the program features [b] group exercise sessions covering topics such as attentional focus, preferred intensity, and flexible goal setting. Experiential learning is employed during these sessions, encouraging participants to engage not only physically but also to reflect on and in action. Finally, the program incorporates [c] a PA counseling session, during which participants individual motives for exercise are assessed, and suitable activities are discussed (Schorno et al., 2022). \u0000Methods \u0000We plan a multicenter randomized controlled trial to investigate the impact of the 6-8 week FEEL program. Inactive individuals (meeting less than 75% of recommended PA guidelines) in the age of 16 to 35 will take part in the study. Participants will be recruited via schools, universities, companies, and social work institutions. Around 300 people will be assigned to either the intervention or control group. The control group will undergo a standard fitness program (usual care). The primary outcomes positive affective exercise experiences, affect regulation competence, wellbeing and PA will be measured pre- (0 weeks), post-intervention (6 weeks) and at follow-up (12 weeks). After piloting the FEEL program in April 2024, the main study will start in fall 2024. \u0000Discussion \u0000This study explores the impact of a multifaceted intervention in a primary care context. It may provide valuable insights for effective considerations of affective processes and related competencies in PA programs. Should the FEEL program showcase positive effects, there may be interest in extending its implementation in diverse settings (e.g., rehabilitation). \u0000References \u0000Ekkekakis, P., Zenko, Z., & Vazou, S. (2021). Do you find exercise pleasant or unpleasant? The Affective Exercise Experiences (AFFEXX) questionnaire. Psychology of Sport and Exercise, 55, Article 101930. https://doi.org/10.1016/j.psychsport.2021.101930 \u0000Hohberg, V., Kreppke, J.‑N., Cody, R., Guthold, R., Woods, C., Brand, R., Dunton, G., Rothman, A., Ketelhut, S., & Nigg, C. (2022). What is needed to promote physical activity? Current Issues in Sport Science, 7, Article 005 ","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"363 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139858281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What makes national sport federations consider environmental sustainability? A conceptual framework on the agenda setting process based on a multiple case study","authors":"Sara Piller, Siegfried Nagel","doi":"10.36950/2024.2ciss065","DOIUrl":"https://doi.org/10.36950/2024.2ciss065","url":null,"abstract":"Introduction \u0000In Europe, more than 60 million people practice sport in a club. Through the consumption behaviour of this large number of sport club members, organised sport not only has positive impacts, but can be deleterious to the environment, for example through travel behaviour or the destruction of natural habitats caused by sport activities and required infrastructure (McCullough et al., 2020). National sport federations, which represent sport clubs and engage in sport policy issues, could be crucial when it comes to taking measures concerning the environmental sustainability of and through organised sport. However, sport federations are traditionally committed to the interests of their members and sport as their core business (Thiel & Mayer, 2009). Therefore, this study addresses the extent to which environmental policies are set on agendas in national sport federations and which drivers are relevant for the agenda setting of such policies. \u0000Methods \u0000To gain a comprehensive and in-depth understanding of these questions, we conducted an explorative qualitative multiple case study with eight Swiss sport federations. To investigate the agenda-setting process in sport organisations, we employed the multiple streams approach by Kingdon (1984). \u0000Results \u0000The developed conceptual framework shows that whereas nature conservation policies were primarily driven by national regulations, climate protection policies were pushed by engaged functionaries of the federations. Functional issues (as opposed to normative arguments), sponsor and member interests, practices of other federations and societal developments could further facilitate or impede the agenda setting of all types of environmental policies. \u0000Discussion/Conclusion \u0000This study provides valuable insights into the drivers of the agenda setting of environmental policies in national sport federations. Furthermore, it outlines the fit and limitations of the multiple streams approach according to Kingdon (1984) to explain agenda setting processes in national sport federations and extends it by external factors to gain a more holistic perspective of the phenomenon. Understanding drivers in the agenda setting of environmental policies in national sport federations is especially important because it is a prerequisite for the subsequent decision making and implementation of such policies and can help to shape the response of the organised sport to environmental challenges. \u0000References \u0000Kingdon, J. W. (1984). Agendas, alternatives, and public policies. Little Brown and Co. \u0000McCullough, B. P., Orr, M., & Watanabe, N. M. (2020). Measuring externalities: The imperative next step to sustainability assessment in sport. Journal of Sport Management, 34(5), 393–402. https://doi.org/10.1123/jsm.2019-0254 \u0000Thiel, A., & Mayer, J. (2009). Characteristics of voluntary sports clubs management: A sociological perspective. European Sport Management Quarterly, 9(1), 81–98. https://doi.org/10.1080/16184740802461744","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"97 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139858808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Attitudes of students towards the use of video-based media in physical education","authors":"Anne-Christin Roth, Maik Beege","doi":"10.36950/2024.2ciss067","DOIUrl":"https://doi.org/10.36950/2024.2ciss067","url":null,"abstract":"Introduction \u0000The importance of teachers’ attitudes regarding the use of technology and media in schools and classrooms gains more recognition in the development of their professional competence. However, students often still hold limited views about digital media in educational settings. This limited perspective is likely due to the significant increase in media usage over the past two decades. It’s assumed that students also desire to use media for learning purposes, which is particularly questionable in the subject of physical education, where physical activity is of central importance. Therefore, understanding students' attitudes toward media use, both inside and outside of school, is crucial, and it's a focal point of media educational efforts. To comprehensively study this, the social-psychological construct of attitude, with its cognitive, affective, and behavioral components, is considered (Zimbardo & Gerrig, 1996). Key questions revolve around characterizing student attitudes toward media use in physical education, identifying relationships between attitude components, and determining external factors that can promote positive attitudes. \u0000Methods \u0000Following the Technology Acceptance Model (Park, 2009), a questionnaire was developed to assess attitudes and validated through a survey of eighth-grade students (N = 202). External variables, cognitive attitude, affective attitude, and behavioral attitude dimensions were examined as separate aspects. These dimensions were refined and validated through reliability analysis and factor analyses. Using these validated scales and collected data, a structural equation model was created to illustrate the relationships between external factors and attitudinal dimensions. \u0000Results \u0000The proposed model demonstrated satisfactory fit to the data (RMSEA = .06; χ2/df ratio = 1.72; CFI = 0.90). The findings indicate that the use of media in physical education and the related self-efficacy in using media have a positive impact on the cognitive aspect of attitude. However, the cognitive component of attitude does not directly influence the intention to use media in physical education. Instead, positive evaluations of media use mediate the relationship between the cognitive component and the intention to use media. The intention to use media in physical education is primarily increased through positive affective evaluations. \u0000Conclusion \u0000A negative attitude toward using media in physical education can be attributed to a lack of access and insufficient self-efficacy in utilizing it. Therefore, interventions at both the student and teacher levels should focus on effectively introducing the benefits of media-supported physical education, with the goal of enhancing self-efficacy and reducing negative attitudes. This model will be further validated at the teacher level in subsequent studies to identify external factors suitable for targeted interventions. \u0000References \u0000Park, S. Y. (2009). An analysis of the Technology","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"57 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical activity intensity classification during activities of daily living in older adults using accelerometers: Is the ear the new wrist?","authors":"Jan Stutz, Philipp Eichenberger, Chiara Oetiker, Sacha Huber, Isabel Hirzel, Christina M. Spengler","doi":"10.36950/2024.2ciss076","DOIUrl":"https://doi.org/10.36950/2024.2ciss076","url":null,"abstract":"Introduction \u0000Accurate measurement of physical activity (PA) in older adults is important, both in health research and personalized prevention. Accelerometers, used to overcome the limitations of self-reporting, were initially worn on the hips, but are increasingly worn on the non-dominant wrist. While this can improve wear compliance, the accuracy of PA intensity classification can be compromised. Given the high prevalence of mild to severe hearing loss in the older population, this study explores a novel approach: integrating an accelerometer into a hearing aid (ear sensor). We aimed to assess its accuracy and compare it to research-grade sensors worn at different locations. \u0000Methods 60 middle-aged to older adults (64.0 ± 8.0 years, 48% women) were included in this study. Each subject performed 12-13 different activities, which were pseudo-randomly selected from a list of 33 activities of daily living. Each activity lasted 8 min and included sedentary activities (e.g., lying, playing cards) low-intensity activities (e.g., hanging laundry), activities of changing intensity or without physical displacement (e.g., yoga, squats), indoor activities related to locomotion (e.g., walking, running), outdoor activities (e.g., walking uphill, cycling), and activities with aids (e.g., walking with a stroller). Oxygen consumption was measured via indirect calorimetry and used to classify activity intensity into sedentary behavior (SB, metabolic equivalent of task [MET] < 1.5), light intensity PA (LPA, 1.5 ≤ MET < 3.0), or moderate to vigorous intensity PA (MVPA, MET ≥ 3.0). The ear sensor was placed behind the left ear, while the research-grade sensors were placed on both wrists and ankles, on the hip, chest, and forehead. Estimation of PA intensity classes was done using mean amplitude deviations and ROC analyses. Contingency tables were used to determine classification accuracy. \u0000Results \u0000Overall accuracy of the ear sensor was 82.6%, performing better than both wrists (left 81.1%, right 76.0%) and both ankles (left 81.1%, right 81.9%), but worse than the forehead (83.6%), hip (85.6%) and the chest (85.9%). ROC analyses show that all sensors can effectively discriminate between sedentary vs. non-sedentary activities (AUC 0.97-0.98, exception ankles: AUC 0.95-0.96) and between MVPA vs. other (AUC 0.96-0.97, exception wrists: AUC 0.89-0.92). \u0000Discussion/Conclusion \u0000This study is the first to show that an accelerometer integrated into a hearing aid can accurately classify PA intensity and differentiate MVPA and sedentary behavior in older adults. It also confirms previous investigations showing that wrist-worn sensors – although increasingly being used to monitor PA – are less effective in capturing MVPA compared to sensors worn closer to the center of mass (including the head/ear in our study). Although the optimal wear site in older adults is a subject of ongoing debate, our data shows that a sensor integrated into a hearing aid offers a promising balance o","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"99 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coeducation in physical education in Switzerland – A national inventory of the legal basis and its implementation","authors":"Christelle Hayoz","doi":"10.36950/2024.2ciss007","DOIUrl":"https://doi.org/10.36950/2024.2ciss007","url":null,"abstract":"Introduction\u0000In Switzerland, sporting activity among girls and young women has increased in recent years. In comparison, however, boys and young men continue to show a higher level of sporting activity at every age level and in all language regions (Lamprecht et al., 2021). As physical education (PE) lessons are an important socialisation factor for extracurricular sports activities, the question arises as to how PE is taught in Switzerland to do justice to the genders.\u0000To date, there has been little scientific research in Switzerland into which cantons implement coeducational PE and which legal or regulatory bases they rely on. Due to this research gap, this contribution will analyse which cantons implement coeducational PE and to what extent these can be linked to the legal bases or language-regional curricula.\u0000Methods\u0000With the help of a document analysis of the current legal and regulatory bases as well as the three language-regional curricula a national inventory of the existing guidelines is conducted. Furthermore, a qualitative survey of all cantonal school offices analyses the current situation regarding coeducational PE lessons in compulsory education in Switzerland.\u0000Results\u0000The results indicate that there are level-specific, cantonal, and language-regional differences. Language cultural differences are particularly evident at lower secondary school level, since in the German-speaking cantons PE lessons are mostly mono-educational and in the French and Italian-speaking cantons they are usually coeducational (Hayoz, under review).\u0000Discussion\u0000In the German-speaking cantons, especially for lower secondary level, the organisational recommendations given in these curricula are used by the municipalities and schools to make and legitimise their decisions. This recommendation can be critically reflected upon and discussed regarding the holistic educational goals of compulsory schooling, as the aim is to provide competence-orientated PE lessons and to promote interdisciplinary skills. According to Alfermann (1992), it must be questioned why precisely this differentiation feature – and no other heterogeneity feature – is used to divide the existing classes. Although performance is a constitutive characteristic for schools and for sport in general, performance is merely one “pedagogical perspective” among many for PE lessons (Frohn, 2019).\u0000Conclusion\u0000In order to analyse the specific didactic implementation of mono- and coeducational teaching in PE and to better understand the language-cultural differences, further national studies would be necessary at both local as well as school level.\u0000References\u0000Alfermann, D. (1992). Koedukation im Sportunterricht [Co-education in physical education]. Sportwissenschaft, 22(3), 323–343.\u0000Frohn, J. (2019). Geschlechter(re)konstruktionen im Sportunterricht aus Schüler*innensicht – eine Längsschnittstudie [Gender (re)constructions in physical education from the students’ perspective – A longitudinal study]. In J. Fro","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"166 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional mobility assessment in Parkinson’s: A pilot feasibility study and a new methodological approach","authors":"Sabrina Köchli, Isabel Casso, Caroline Whyatt, Stefan Schmid, Marietta Ungerer, Yvonne Delevoye-Turrell, Dawn Rose","doi":"10.36950/2024.2ciss055","DOIUrl":"https://doi.org/10.36950/2024.2ciss055","url":null,"abstract":"Background \u0000Parkinson’s disease (PD) is associated with motor impairments that negatively impact functional mobility (Armstrong & Okun, 2020). Functional mobility is “a person’s ability to move to accomplish activities of daily living” (Bouça-Machado et al., 2020). Whilst several assessment scales exist to evaluate PD, many focus on symptom severity or use speed as a proxy for quality of movement (e.g. Timed Up and Go; Buckley et al., 2019; Mirelman et al., 2019). Here we share the development of an integrated motion capture and pressure-sensitive gait mat sequence to assess functional mobility. \u0000Design/Methods \u0000To capture aspects of functional mobility accurately, we developed a new assessment protocol (FMA-P) to measure which aspects of movement differed between people with (n = 12) and without (n = 12) PD. The sequence involved rising from a chair, locomotion, turning, bending, picking up and placing an object (keys), and returning to sit down on the chair (mean of three trials). \u0000Results \u0000The mean age of our participants was 65.25 ± 7.8 years, 46% females. We found significant differences in locomotion such as a lower step ratio (p = 0.023), stride length (p < 0.001), and stride velocity (p = 0.019), as well as a higher double support time (p = 0.004), and stride length variability (p = 0.004) in people with PD (PwP) compared to aged-matched healthy participants. PwP showed a lower toe-off set angle (p = 0.042), lower foot height (p = 0.007), and a lower heel strike angle (p = 0.006) during locomotion. Further, a lower shoulder-elbow arm swing angular velocity (p=0.042), and a higher elbow-wrist arm swing angular velocity (p = 0.054) were observed in PwP compared to controls. Getting up from a chair was associated with a lower inclination amplitude in PwP compared to healthy controls (p = 0.047). In the turning section, we found a later onset of pelvis rotation in PwP (p = 0.034). More time was required for PwP to pick the keys up from the floor compared to controls (p = 0.002). \u0000Discussion \u0000The new measurement protocol could contribute to early diagnosis of PD, offering a quantitative evaluation of functional mobility. For example, reduced toe and heel offset angles may be early determinants of developing shuffling in later disease stages. Moreover, our findings provide objective and precise information about a variety of qualitative aspects of functional mobility. This approach can therefore be used to evaluate change over time thereby improving the evidence base of outcome variables for intervention studies. The FMA-P is of high clinical relevance to aid in the quantitative evaluation of clinical measures of motor impairment. \u0000References \u0000Armstrong, M. J., & Okun, M. S. (2019). Diagnosis and treatment of Parkinson disease. A review. JAMA, 232(6), 548-560. https://doi.org/10.1001/jama.2019.22360 \u0000Bouça-Machado, R., Duarte, G. S., Patriarca, M., Castro Caldas, A., Alarcão, J., Fernandes, R. M., Mestre, T. A.,, Matias, R., & Ferreira, J. J. (","PeriodicalId":415194,"journal":{"name":"Current Issues in Sport Science (CISS)","volume":"52 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}