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PEOPLE@HES-SO - Verzeichnis der Mitarbeitenden und Kompetenzen
PEOPLE@HES-SO - Verzeichnis der Mitarbeitenden und Kompetenzen

PEOPLE@HES-SO
Verzeichnis der Mitarbeitenden und Kompetenzen

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Gafner Simone

Gafner Simone

Professeur-e HES Associé-e

Hauptkompetenzen

Geriatrics

Fall risk

Diagnostic accuracy

Professional development

Advanced practice physiotherapy

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Hauptvertrag

Professeur-e HES Associé-e

Büro: LEU

HES-SO Valais-Wallis - Haute Ecole de Santé
Chemin de l'Agasse 5, 1950 Sion, CH
HEdS - VS
Bereich
Santé
Hauptstudiengang
Physiothérapie
BSc HES-SO en Physiothérapie - HES-SO Valais-Wallis - Haute Ecole de Santé
MSc HES-SO/UNIL en Sciences de la santé - HES-SO Master

Abgeschlossen

Frontal plane hip strength, a new and targetable fall risk parameter
AGP

Rolle: Hauptgesuchsteller/in

Financement: Physioswiss

Description du projet : Summary The overall aim of this PhD project is to investigate the role of hip motor functions, in particular frontal plane muscle functions, for fall risk prevention in elderly persons. The total number of elderly persons ('65 years) in Switzerland is rapidly increasing. This will lead to a higher number of falls with an often associated loss of independency. Therefore, the identification of easily measurable and targetable fall risk predictors is clinically essential. Lateral and postero-lateral falls have greater hip injury potential than falls in other directions. This leads to an increasing interest in lateral control and its influence on fall risk. This project will provide for the first time solid data on frontal plane hip motor dysfunctions in elderly and their consequences. The PhD project is subdivided in five work packages. Each package answers a specific research question and will lead to a publication in a peer-reviewed journal. The first work package consists of a systematic review, which aims to summarize psychometric properties of the following currently used functional fall risk predictors in elderly: timed up and go test (TUG), performance oriented mobility assessment (POMA), short physical performance battery (SPPB) and spatiotemporal gait parameters. The second work package aims to assess if hip frontal plane muscle strength can reliably be measured in elderly patients at risk of falls. We measure the hip abduction and adduction maximum voluntary isometric strength (MVIS) and the rate of force development (RFD) in elderly fallers and non-fallers on two different time points. The ICCagreement will be calculated. The third work package aims to evaluate if hip frontal plane muscles better distinguish between fallers and non-fallers than other hip muscle groups (flexors, extensors, internal rotators and external rotators). We additionally assess grip strength, which is supposed to be related to whole body strength, and check if hip muscles can better distinguish between fallers and non-fallers than grip strength. The forth work package aims to assess the construct validity of the parameter hip abductor MVIS and RFD. We check if these parameters differ between elderly persons known as fallers, elderly persons who were classified as being at risk of falling and elderly non-fallers. We further test the hypothesis that the hip abductor MVIS and RFD correlates with currently used fall risk predictors (TUG, POMA, SPPB and spatiotemporal gait parameters). The fifth work package investigates the predictive validity of the parameter hip abductor muscle strength (MVIS and RFD) for falls. For that we measure hip MVIS and RFD of elderly. We afterwards follow them during 12 months and record their fall rate and fall related injuries on a monthly basis. The results of this study will validate hip frontal plane muscle strength measures as clinically important fall risk predictor. As hip strength is directly targetable, this project fosters the development of innovative and more efficient physical therapeutic interventions for fall prevention. This might help to maintain the independency of elderly persons. The benefits will concern a substantial percentage (~40%) of the elderly population, with positive social impact and better use of financial and human resources.

Forschungsteam innerhalb von HES-SO: Gafner Simone

Partenaires académiques: Santé

Durée du projet: 01.07.2016 - 31.08.2018

Montant global du projet: 25'000 CHF

Statut: Abgeschlossen

Jumping and Injuries: the role of hip abductor strength
AGP

Rolle: Mitarbeiter

Requérant(e)s: Santé, Allet Lara, Santé

Financement: HES-SO Rectorat; Laboratoire de Cinésiologie W.Taillard; Physioswiss

Description du projet : A well functioning muscle corset is important for the participation in any kind of sport activities. Many popular sports like running, athletics and team sports such as soccer or handball induce injuries to the lower extremity. Interestingly, most sports injuries (e.g. in soccer and rugby) occur in the second half of the competition and are thought to be fatigue induced. Many studies examined the consequences of fatigue of ankle muscles on postural stability, but only few studies examined the proximal muscles of the lower extremities that are also thought to be important in balance performance. Nevertheless, several authors demonstrated that hip abductor weakness and weak knee muscles lead to greater difficulties to maintain balance and postural control than weak ankle muscles. These studies support the importance of the hip abductor strength on postural control, which is a pre requisite for being physically active. Another study, in which intramuscular hypertonic saline was injected in the gluteus medius to inhibit its activity revealed a reduced internal hip abductor and external knee adduction moments during walking.

Forschungsteam innerhalb von HES-SO: Gafner Simone , de Preux-Allet Lara

Partenaires académiques: Santé; Allet Lara, Santé

Partenaires professionnels: HUG

Durée du projet: 05.01.2014 - 31.03.2015

Montant global du projet: 114'400 CHF

Statut: Abgeschlossen

2023

Prédiction du risque de chute chez la personne âgée ou en réhabilitation
Bericht ArODES

Simone Chantal Gafner, Sébastien Gard, Jimmy Loup, Pascal Pitteloud, Simon Martin

2023,  Sierre : HES-SO Valais-Wallis,  27 p.

Link zur Publikation

Zusammenfassung:

Ce projet est le résultat d'une collaboration entre l’Institut Informatique et l’Institut de Santé, visant à prédire l’augmentation du risque de chute pour les personnes âgées. Cette prédiction s'appuie sur l'expertise et les travaux de recherche du Prof. Simone Gafner. Au cours des 6 mois de ce projet, nous avons créé un prototype de solution, incluant capteurs, logiciels et algorithmes, pouvant être réutilisé et déployé dans d’autres logements. Nous avons mis en place cette solution dans le logement d'une personne âgée et récolté les données des différents capteurs. Avec ces données quantitatives, nous avons analysé et évalué dans quelle mesure il était possible de prédire l'augmentation du risque de chute pour les personnes âgées. Cette mise en application nous a permis d'un coté de mesurer la pertinence des différentes données et capteurs, et de l'autre de mettre en évidence les avantages, limitations et problèmes liés à l'approche choisie.

Évaluation de la capacité fonctionnelle de marche :
Wissenschaftlicher Artikel ArODES
test de marche de deux minutes

Aline Reinmann, Simone Chantal Gafner, Anne-Violette Bruyneel

Kinésithérapie, la revue,  June 2023, vol. 23, no. 258, pp. 52-57, 258, 52-57

Link zur Publikation

Does texting while walking affect spatiotemporal gait parameters in healthy adults, older people, and persons with motor or cognitive disorders? :
Wissenschaftlicher Artikel ArODES
a systematic review and meta-analysis

Anne-Violette Bruyneel, Aline Reinmann, Simone Chantal Gafner, Jean-David Sandoz, Noémie Duclos

Gait and posture,  February 2023, vol. 100, pp. 284-301

Link zur Publikation

Zusammenfassung:

Background : Smartphone use during postural-locomotor tasks is an everyday activity for individuals of all ages in diverse environmental situations and with various health conditions. Nevertheless, the use of smartphones during walking is responsible for many accidents. Research question : This systematic review and meta-analysis examined spatiotemporal gait parameters during the dual-task situation “texting + gait” versus isolated gait task (single task) in adult persons (>18 years). Methods : Electronic database searches were performed in PubMed, Embase, CINHAL, and LISSA. Two examiners assessed the eligibility and quality of appraisal with the Downs and Black checklist. The standardized mean difference (SMD) with 95 % confidence intervals was calculated to compare single- and dual-task situations. The pooled estimates of the overall effect were computed using a random or fixed effects method, and forest plots were generated. Results and significance : A total of 25 studies were included. All studies included healthy adults, with four studies including older persons and three including people with pathological conditions. The walking task was with (N = 4) and without (N = 21) obstacles and in laboratory (N = 21) or ecological conditions (N = 7). The quality scores were 6–8/16 for eight studies, 9–12/16 for seven studies, and more than 12/16 for three studies. During the “texting + gait” tasks, the meta-analysis highlighted a significant impairment of gait speed, step and stride length, cadence, and double and single support (p < 0.05). The spatiotemporal parameters of gait were systematically altered during the texting task regardless of the population and test conditions. However, the quality of the studies is moderate, and few studies have been conducted for people with motor deficiencies. The impact of texting on walking should be better considered to develop prevention actions.

Évaluation de la capacité fonctionnelle de marche :
Wissenschaftlicher Artikel ArODES
test de marche de six minutes

Anne-Violette Bruyneel, Simone Chantal Gafner, Aline Reinmann

Kinésithérapie, la revue,  February 2023, vol. 23, no. 254, pp. 44-49

Link zur Publikation

2022

Test de 10 mètres de marche
Wissenschaftlicher Artikel ArODES

Simone Chantal Gafner, Anne-Violette Bruyneel

Kinésithérapie, la revue,  2022, vol. 22, no. 248-249, pp. 46-49

Link zur Publikation

Effects of physical activity and dietary supplement on fat free mass and bone mass density during weight loss :
Wissenschaftlicher Artikel ArODES
a systematic review and meta-analysis

Anja Roth, Karl Martin Sattelmayer, Chloé Schorderet, Simone Chantal Gafner, Lara Allet

F1000Research,  2022, vol. 11, no. 8, pp. 1-18

Link zur Publikation

Zusammenfassung:

Background: After a diet- or surgery induced weight loss almost 1/3 of lost weight consists of fat free mass (FFM) if carried out without additional therapy. Exercise training and a sufficient supply of protein, calcium and vitamin D is recommended to reduce the loss of FFM. Objective: To investigate the effect of exercise training, protein, calcium, and vitamin D supplementation on the preservation of FFM during non-surgical and surgical weight loss and of the combination of all interventions together in adults with obesity. Methods: A systematic review was performed with a pairwise meta-analysis and an exploratory network meta-analysis according to the PRISMA statement. Results: Thirty studies were included in the quantitative analysis. The pairwise meta-analysis showed for Exercise Training + High Protein vs. High Protein a moderate and statistically significant effect size (SMD 0.45; 95% CI 0.04 to 0.86), for Exercise Training + High Protein vs. Exercise Training a high but statistically not significant effect size (SMD 0.91; 95% CI -0.59 to 2.41) and for Exercise Training alone vs. Control a moderate but statistically not significant effect size (SMD 0.67; 95% CI -0.25 to 1.60). In the exploratory network meta-analysis three interventions showed statistically significant effect sizes compared to Control and all of them included the treatment Exercise Training. Conclusions: Results underline the importance of exercise training and a sufficient protein intake to preserve FFM during weight loss in adults with obesity. The effect of calcium and vitamin D supplementation remains controversial and further research are needed.

2021

Reliability and diagnostic accuracy of commonly used performance tests relative to fall history in older persons :
Wissenschaftlicher Artikel ArODES
a systematic review

Simone Chantal Gafner, Lara Allet, Roger Hilfiker, Caroline Bastiaenen

Clinical interventions in aging,  2021, vol. 16, pp. 1591-1616

Link zur Publikation

Zusammenfassung:

Background/Objectives: Early detection of fall risk is crucial for targeted fall prevention and rehabilitation. This systematic review facilitates decision-making concerning the optimal choice for a suitable fall risk assessment test for older persons in four different settings. This systematic review provides an overview of reliability and diagnostic accuracy (sensitivity [SE], specificity, likelihood ratios, and post-test probabilities) of commonly used performance measures to assess older persons’ fall risk. Methods: Two reviewers independently screened titles, abstracts, and full texts of all articles identified through a systematic search on the PubMed, Embase, CINAHL, and Web of Science databases. The methodological quality was critically appraised using the Quality Assessment of Diagnostic Accuracy Studies-2 tool and the COSMIN risk of bias tool. Due to a setting-dependent fall risk, four relevant settings were selected for the analyses: 1) community dwelling, 2) nursing home, 3) hospital, and 4) the combined setting of hospitalized and community-dwelling persons. Results: Recommendations for diagnostic accuracy can be made for the specific settings: setting 1) mini-balance evaluation system test, timed up and go test with fast speed (TUG FAST), cognitive TUG FAST, functional reach test, and fast gait speed; 2) TUG at usual speed; 3) none of the included tests; and 4) some hip muscle strength and hand grip strength tests might be recommended. Conclusion: The review’s results are applicable for use in clinical practice, both on a population and on an individual level for patients and caregivers. Most measures’ reliability is sufficient. However, the included tests’ discriminative ability is not optimal for clinical use in relevant settings. The low sample sizes of most of the included studies and a limited amount of studies in all but the community-dwelling setting hinder us from making strong recommendations.

Bariatric surgery :
Wissenschaftlicher Artikel ArODES
consequences on functional capacities in patients with obesity

Aline Reinmann, Simone Chantal Gafner, Roger Hilfiker, Anne-Violette Bruyneel, Zoltan Pataky, Lara Allet

Frontiers in endocrinology,  2021, vol. 12, 646283, pp. 1-8

Link zur Publikation

Zusammenfassung:

Introduction: Bariatric surgery leads to loss of fat and fat-free mass (FFM). To preserve FFM it is recommended that weight loss interventions are accompanied by physical activity. However, it remains unknown if functional capacities spontaneously improve after a substantial weight loss. Study’s aim was to assess the effect of bariatric surgery on strength, functional capacities and quality of life of participants with a body mass index (BMI) ≥ 35 kg/m2. Method: Anthropometric parameters (weight, BMI, waist circumference), physical functions (quadriceps strength, walking capacity, spatio-temporal gait parameters, dynamic balance, lower limb power) and quality of life were assessed before and at three months after the bariatric surgery in 33 individuals who did not follow any physical activity program. Results: The anthropometric parameters, quality of life and three functional abilities (walking capacity, normal gait speed and lower limb power) improved significantly three months post-surgery. In contrast, fast gait speed, absolute strength, normalized strength, and dynamic balance did not improve. Discussion: A massive weight loss should be accompanied by an exercise program aiming to maintain FFM and to enhance muscle strength and balance. Such a program might also enhance functional capacities and help to sustain the weight loss over time.

Mesure du contrôle postural en position debout bipodale par plateforme stabilométrique
Professioneller Artikel ArODES

Anne-Violette Bruyneel, Aline Reinmann, Thomas Pourchet, Pierre Nicolo, Simone Chantal Gafner

Kinésithérapie, la revue,  2021, vol. 21, no. 231, pp. 30-32

Link zur Publikation

Reliability and validity of an adapted hip abductor strength measure as a potential new fall risk assessment for older persons :
Wissenschaftlicher Artikel ArODES
a study protocol

Simone Chantal Gafner, Caroline Henrice Germaine Bastiaenen, Emmanuel Biver, Serge Ferrari, Lara Allet

BMC geriatrics,  2021, vol. 21, article 110, pp. 1-12

Link zur Publikation

Zusammenfassung:

Background : Persons aged ≥ 65 years are currently the world’s fastest growing age group. An important complication of age is the increasing risk of falls. Falls have multifactorial etiology and modifiable risk factors open for interventions in prevention and rehabilitation, are of high interest. In this context, strong hip abductors seem to be important to prevent falls. A newly adapted measurement device to measure hip abductor strength (HAS) in a closed chain position was developed. We aim to assess feasibility, intra- and inter-tester reliability and construct and criterion validity of the new measure. Methods : In two subsequent parts a feasibility, reliability and validity study with an adapted measurement instrument for the assessment of HAS (index test) in a closed chain position in persons aged ≥ 65 years will be conducted. Part I investigates feasibility of the measure in clinical settings as well as reliability of the new HAS test (n = 26). Part II evaluates construct and criterion validity (n = 169). Construct validity will be assessed cross-sectional, criterion validity by comparison with prospectively followed up fall history for 12 months (external criterion) and other functional fall risk assessments (Short Physical Performance Battery, Timed Up and Go test, usual gait speed and hand grip strength). Discussion : Results of feasibility, will give insight in its applicability in daily clinical life and clinimetric properties will show if measurements of HAS in a closed chain position should be encouraged to include in fall risk assessments in older adults.

2020

The role of hip abductor strength in identifying older persons at risk of falls: a diagnostic accuracy study
Wissenschaftlicher Artikel ArODES
a diagnostic accuracy study

Simone Chantal Gafner, Caroline Henrice Germaine Bastiaenen, Serge Ferrari, Gabriel Gold, Andrea Trombetti, Philippe Terrier, Roger Hilfiker, Lara Allet

Clinical interventions in aging,  2020, vol. 15, pp. 645-654

Link zur Publikation

Zusammenfassung:

Background/Objectives: Early detection of fall risk in persons older than 65 is of clinical relevance, but the diagnostic accuracy of currently used functional tests (eg short physical performance battery [SPPB] and timed up and go test [TUG]) to assess older persons’ fall risks remains moderate. Recent literature highlights the importance of strong hip abductors to prevent falls. We thus aimed to assess the diagnostic accuracy of hip abductor strength measures to assess older persons’ fall risks. Methods: Hip abductor maximum voluntary isometric strength (ABD MVIS), rate of force generation (ABD RFG), and the SPPB and TUG functional fall risk assessments were assessed in 60 persons aged over 65 years (82.0 ± 6.1 years). The diagnostic accuracy (area under the curve [AUC], sensitivity [sens], specificity [spec], positive predictive value [PPV], negative predictive value [NPV], and positive and negative likelihood ratios [LR+, LR−]) was evaluated at a clinically important 90% sensitivity level. Cut-off values for clinical use were calculated. Results: In our population, hip ABD MVIS (AUC 0.8, sens 90.6%, spec 57.1%, PPV 70.7%, NPV 84.2%, LR+ 2.1, LR- 0.2, and cut-off value ≤ 1.1 N/kg) and hip ABD RFG (AUC 0.8, sens 90.6%, spec 46.4%, PPV 65.9%, NPV 81.3%, LR+ 1.7, LR- 0.2, and cut-off ≤ 8.47 N/kg/s) show diagnostic accuracy comparable to other fall risk assessments (SPPB and TUG) and a high net sensitivity when used in a test battery. Conclusion: Hip ABD MVIS or RFG shows good diagnostic accuracy to differentiate between older fallers and nonfallers compared to the chosen external criterion history of falls. The high net sensitivity when hip ABD MVIS or RFG is combined with currently used fall risk assessments shows promise in contributing value to a test battery and should be investigated further in longitudinal studies.

2019

Functional reach test
Wissenschaftlicher Artikel ArODES

Dominique Monnin, Simone Chantal Gafner, Lara Allet

Kinésithérapie, la revue,  2019, vol. 19, no. 212-213, pp. 81-82

Link zur Publikation

2018

Hip-abductor fatigue influences sagittal plane ankle kinematics and shank muscle activity during a single-leg forward jump
Wissenschaftlicher Artikel ArODES

Simone Chantal Gafner, Veronika Hoevel, Ilona Punt, Stefan Schmid, Stephane Armand, Lara Allet

Journal of electromyography and kinesiology,  December 2018, vol. 43, pp. 75-81

Link zur Publikation

Zusammenfassung:

Diminished hip abductor strength decreases postural control which is a parameter that is associated with an increased risk of ankle sprains. In our study we evaluated the influence of hip abductor fatigue on sagittal plane ankle kinematics and shank muscle activity during a single-leg forward jump. Sagittal ankle plane kinematics are important in ankle sprains but less studied than frontal plane kinematics. Therefore, we evaluated differences in sagittal ankle kinematics (12-camera motion capture system) and lower limb surface electromyographic muscle activity in 20 healthy, recreationally active adults (9 females, 11 males, mean age 30.3 SD 4.0 years, mean BMI 23.6 SD 2.8 kg/m2) before and after a hip abductor fatigue protocol (200-ms prior, at and in the 250-ms following initial contact (IC)). After fatigue, the maximal ankle plantar-flexion angle decreased prior to IC (median 3.8° [interquartile range 0.1, 7.2], p = 0.014), at IC (4.1° [−0.3, 5.0], p = 0.027) and post IC (4.1° [−1.3, 5.0] p = 0.036). Gastrocnemius activity onset was delayed (−28.0 ms [−44.0, 0.0], p < 0.01). Average activity of the tibialis anterior increased prior to IC (pre-fatigue 19.32% [14.89, 33.45], post-fatigue 28.95% [18.49, 34.81], p < 0.05). Hip-abductor fatigue influenced sagittal ankle kinematics and shank muscle activity during single-leg landings.

Intra-rater reliability of hip abductor isometric strength testing in a standing position in older fallers and non-fallers
Wissenschaftlicher Artikel ArODES

Anne-Violette Bruyneel, Simone Chantal Gafner, Serge Ferrari, Gabriel Gold, Dominique Monnin, Philippe Terrier, Caroline H. Bastiaenen, Lara Allet

European review of aging and physical activity,  2018, vol. 15, no 9, pp. 1-10

Link zur Publikation

Zusammenfassung:

Background : Reduced hip muscle strength has been shown to be a major factor related to falls in older persons. However, comprehensive assessment of hip abduction strength in the clinical setting is challenging. The aim of this study was to investigate the feasibility and intra-rater reliability of a quick and simple hip abductor strength test in a functional standing position. Methods : Individuals over 65 years of age were recruited from the geriatric department of a university hospital and an outpatient clinic. Thirty-two older subjects, including 16 fallers (≥1 fall during the last 12 months) and 16 non-fallers were included. Maximum voluntary isometric strength (MVIS) and rate of force generation (RFG) of the hip abductors of the right leg were evaluated in a standing position using a hand-held dynamometer. Two test-sessions were carried out. All hip strength values were normalized to participants’ weight. Reliability was determined using the intra-class correlation coefficient agreement (ICCagreement), the standard error of measurement (SEM) and a Bland and Altman analysis (BA). Results : All participants completed the strength tests, which took a mean 2.47 ± 0.49 min (one limb). Intra-rater reliability was higher for MVIS (0.98[0.95–0.99]) than RFG (ICC = 0.93[0.87–0.97]) for the entire sample. In the non-fallers, ICC was 0.98[0.95–1.00] (SEM = 0.08 N.kg− 1) for MVIS and 0.88[0.75–0.96] for RFG (SEM = 1.34 N.kg-1.s-1). In the fallers, ICC was 0.94[0.89–0.98] (SEM = 0.11 N.kg− 1) for MVIS and 0.93[0.84–0.98] (SEM = 1.12 N.kg− 1.s− 1) for RFG. The BA plot showed that the MVIS and RFG values did not differ across test-sessions, showing that no learning effect occurred (no systematic effect). The mean differences between test-sessions were larger and the LOA smaller in the fallers than in the non-fallers. Conclusion : Assessment of hip strength in a standing position is feasible, rapid and reliable. We therefore recommend this position for clinical practice. Future studies should investigate the diagnostic value of hip abductor strength in standing to discriminate between fallers and non-fallers, and to determine if change in strength following a falls prevention program reduces the risk of falls.

Un test fonctionnel :
Wissenschaftlicher Artikel ArODES
la Short Physical Performance Battery (SPPB)

Dominique Monnin, Simone Chantal Gafner, Lara Allet

Kinésithérapie, la revue,  February 2018, vol. 18, no. 194, pp. 51-52

Link zur Publikation

2017

Hip muscle and hand-grip strength to differentiate between older fallers and non-fallers :
Wissenschaftlicher Artikel ArODES
a cross-sectional validity study

Simone Chantal Gafner, Caroline H. Bastiaenen, Serge Ferrari, Gabriel Gold, Philippe Terrier, Roger Hilfiker, Lara Allet

Clinical interventions in aging,  2018, vol. 13, pp. 1-8

Link zur Publikation

Zusammenfassung:

Background: Hip muscle weakness in older people seems to be an influencing factor of falls. Currently, it is unclear which muscles out of the hip muscle group play an important role in older people. A validating process in the measurement regarding muscle strength related to falls is necessary before answering that question. Objective: Firstly, we aimed to investigate which hip muscle group strength shows an acceptable level of distinction between older adult fallers and non-fallers compared to a predefined external criterion regarding falling. Secondly, we aimed to compare the same outcomes and questions for hand-grip strength in relation to the same external criterion. Design: This study was a cross-sectional validity study. Methods: The maximum voluntary isometric strength (MVIS) and the rate of force generation of hip abductors (ABD), adductors, internal and external rotators, extensors, and flexors were measured with a dynamometer fixed to a custom-made frame as well as hand-grip strength with a Martin Vigorimeter in 60 older people aged over 65 years (38 females and 22 males). Results: The area under the curve (AUC) and the results of the mean decrease in Gini index assessed by random forest approach show that of all the assessed parameters, hip ABD MVIS showed the highest discriminative value regarding the chosen external criterion in older people (AUC ABD MVIS 0.825, 95% confidence interval: 0.712–0.938). Conclusion: Results indicate that ABD MVIS is a useful measure to distinguish between older adult fallers and non-fallers regarding the chosen external criterion.

À propos de l'article « La sécurité au quotidien ou la prévention des chutes à domicile » de Barbara Zindel
Professioneller Artikel ArODES

Dominique Monnin, Simone Chantal Gafner

Physioactive,  2017, vol. 4, p. 6

Link zur Publikation

Evaluation of hip abductor and adductor strength in the elderly :
Wissenschaftlicher Artikel ArODES
a reliability study

Simone Chantal Gafner, Caroline H. Bastiaenen, Philippe Terrier, Ilona Punt, Serge Ferrari, Gabriel Gold, Rob de Bie, Lara Allet

European review of aging and physical activity,  2017, vol. 14, article 5, pp. 1-9

Link zur Publikation

Zusammenfassung:

Background : In elderly individuals an increased muscle strength contributes to the diminution of the falls risk and associated adverse events. An increasing interest in lateral control exists due to the fatal consequences of postero-lateral falls. Therefore a proper assessment of frontal plane hip muscle strength in elderly is important but remains challenging. Therefore we aimed to investigate the feasibility and repeatability of a hip abductor and adductor maximum voluntary isometric strength (MVIS) and rate of force generation (RFG) test in elderly. This represents an initial step in the development process of a new and clinically relevant test that could lead to more specific treatment protocols for this population. Methods : In this measurement focused study hip abduction (ABD) and adduction (ADD) MVIS and RFG were tested twice within one to three hours with a dynamometer fixed to a custom made frame in a geriatric population including fallers and non-fallers. Intraclass correlation coefficient (ICC agreement), standard error of measurement (SEM), and smallest detectable difference (SDD) were determined. Results : All recruited persons (N= 76; mean age (SD) 80.46 (7.05) years old) completed the tests. The average time needed to complete the strength tests was 10.58 min.(1.56) per muscle group. The reliability of the hip ABD and ADD was high with ICC’s agreement ranging from 0.83 to 0.97. The SDD varied between 18.1 and 81.8% depending on the muscle group and type of strength that was evaluated. Conclusion : Hip abductor and adductor strength measures in older person are feasible and reliable. However, the significance of moderate changes in these measurements may be limited by the large SDD and SEM. Therefore, physical therapist should be careful when using this measure for assessing the progress of an individual person in a daily clinical use.

2019

Hip abductor strength and its ability to differentiate between older persons at risk of falls and non-fallers
Konferenz ArODES

Simone Chantal Gafner, C.H.G. Bastiaenen, S. Ferrari, G. Gold, P. Terrier, Roger Hilfiker, Lara Allet

Proceedings of WCPT congress 2019

Link zur Konferenz

Roux-en-Y bariatric surgery (RYGB) and its effect on functional capacities of obese patients
Konferenz ArODES

Aline Reinmann, Simone Chantal Gafner, Anne-Violette Bruyneel, Z. Pataky, Lara Allet

Proceedings of WCPT congress 2019

Link zur Konferenz

Intra-rater reliability of hip abductor isometric strength testing in a standing position in older persons at risk of falls
Konferenz ArODES

Anne-Violette Bruyneel, Simone Chantal Gafner, S. Ferrari, G. Gold, D. Monnin, P. Terrier, C. Bastiaenen, Lara Allet

Proceedings of WCPT congress 2019

Link zur Konferenz

2018

The diagnostic accuracy of hip abductor strength in the fall risk of older persons
Konferenz ArODES

Simone Chantal Gafner, C.H. Bastiaenen, S. Ferrari, G. Gold, P. Terrier, Roger Hilfiker, Lara Allet

Annals of physical and rehabilitation medicine

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Zusammenfassung:

Introduction/Background Persons aged over 65 years have an increased risk of falling and falls often trigger serious consequences like independency loss and increased mortality. An early detectionof persons at risk of falling and a well-targeted fall prevention is thus of great interest. Previous studies showed that hip abductor strength is the muscle groups among all hip muscles, which is particularly related to the fall risk of older persons. Thereforeweaimed to investigate the diagnostic accuracy of hip abductor strength by using history of falls as the external criterion. Material and method Hip abductor maximum voluntary isometric strength (ABD MVIS) and rate of force generation (ABD RFG) were assessed with a dynamometer fixed to a custom made frame in 60 persons aged over 65 years. The diagnostic accuracy [sensitivity (sens), specificity (spec), positive predictive value (PPV), negative predictive value (NPV), positive and negative likelihood ratios (LR+, LR−)] was assessed at a clinically important 90% sensitivity level. Cutoff values were calculated. Results Hip ABD MVIS (Sens. 90.6%, Spec. 57.1%, PPV 70.7%, NPV 84.2%, LR+ 2.11, LR− 0.16, cutoff value ≤ 1.06 N/kg) shows a slightly higher diagnostic accuracy than hip ABD RFG (Sens. 90.6%, Spec. 46.4%, PPV 65.9%, NPV 81.3%, LR+ 1.69, LR− 0.20, cutoff ≤ 8.47 N/kg/s). The results indicate that hip abductor strength shows a comparable diagnostic accuracy as other fall risk or mobility assessment tools (e.g. timed up and go test and short physical performance battery). Conclusion Hip abductor strength shows a good diagnostic accuracy to discriminate between older fallers and non-fallers and therefore might be an interesting parameter for fall risk prediction and a targeted intervention program. This very promising parameter should further be investigated in prospective studies.

La précision diagnostique de la force des muscles de la hanche et la force de préhension de la main dans l'évaluation du risque de chute
Konferenz ArODES

Simone Chantal Gafner

Bien vieillir au 21ème siècle : 11ème congrès international francophone de gérontologie et gériatrie (CIFGG) : journal des abstracts

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