Effects of resistance training on muscle strength in adults with haemophilia: A systematic review and meta-analysis.

INTRODUCTION: Although resistance training is frequently prescribed for people with haemophilia (PWH), no previous meta-analyses have quantified the effect of this intervention on muscle strength, nor the implications of the intervention's modality and duration. AIM: (1) To determine the effects of resistance training on muscle strength in adults with haemophilia; (2) To determine the most effective duration and modality among the exercise protocols. METHODS: A systematic search from inception until 28 November 2023 was conducted in PubMed, Embase, Web of Science, CENTRAL and CINAHL databases. We included randomised controlled trials or before-after studies that involved resistance training without other physiotherapy co-interventions. Study selection, data extraction and risk of bias assessment were independently performed by two reviewers. Disagreements were resolved in consultation with a third author. The level of evidence was determined according to the GRADE methodology. RESULTS: Seven studies were included. Measurements of knee extensor strength and elbow extensor strength were included in the meta-analysis. Subgroup analysis showed significant effects for both elastic resistance protocols (SMD: 0.54; 95% CI: 0.02-1.07) and conventional training (isometric and weight-based equipment) (SMD: 0.88; 95% CI: 0.50-1.25), demonstrating small and moderate effect sizes respectively. Additionally, both protocols of duration 5-7 weeks (SMD: 1.16, 95% CI: 0.63-1.69) as well as those of duration ≥8 weeks (SMD: 0.57, 95% CI: 0.20-0.94) showed a significant difference. CONCLUSION: Resistance training is effective in improving muscle strength of the knee and elbow extensors in PWH. Both elastic resistance and conventional training show benefits.

Benefits of physical activity self-monitoring in patients with haemophilia: a prospective study with one-year follow-up.

INTRODUCTION: Activity wristbands have been shown to be effective in relation to self-monitoring activity levels and increasing exercise adherence. However, previous reports have been based on short-term follow-ups in people with haemophilia (PWH). AIM: (1) To evaluate compliance with physical activity (PA) recommendations in PWH during a 1-year follow-up period using activity wristbands to record daily steps and intensity; (2) To determine the effect of PA self-monitoring on clinical outcomes. METHODS: A prospective observational study was conducted in 27 adults with severe haemophilia undergoing prophylactic treatment. The Fitbit Charge HR was used to track daily PA for an entire year. The participants were encouraged to try to reach a goal of 10,000 steps/day and to track their progress. The pre- and post-evaluation included quality of life (A36 Hemophilia-QoL Questionnaire), joint health (Haemophilia Joint Health Score), functionality (Timed Up and Go test), and muscle strength. RESULTS: A total of 323.63 (95%CI: 194-364) valid days (i.e., > 2000 steps) were recorded. The annual average number of steps per day taken by participants was 10,379. Sixteen (59%) PWH reached 10,000 steps/day at baseline and 17 (63%) at 1 year follow-up, with no significant differences (x2 = .33; p = .56). A statistically significant improvement was observed in daily moderate activity time (p = .012) and in the 'physical health' quality of life subscale (mean difference: 2.15 points; 95%CI: .64-3.65; p = .007). CONCLUSION: Our results suggest that patients with severe haemophilia who self-managed their PA can improve their long-term quality of life in the domain of physical health and also the daily time spent in moderate-intensity PA.

30-sit-to-stand power is a better tool than isometric knee extensor strength to detect motor impairment in people with haemophilic arthropathy.

INTRODUCTION: Regular assessment of motor impairments is crucial in people with haemophilic arthropathy (PwHA). This study aimed to determine if there are differences in 30-seconds sit-to-stand (30-STS) power and maximal voluntary isometric contraction (MVIC) of the knee extensors between PwHA and healthy control group (CG). The secondary aims were to investigate the correlation between 30-STS power and MVIC of knee extensors with clinical characteristics and to assess their effectiveness in identifying motor impairment in PwHA. METHODS: A cross-sectional study was conducted by collecting data from PwHA (n = 17) and a sedentary CG (n = 15). MVIC (torque) and 30-STS power were normalised to body mass. Correlation analysis and simple linear regression adjusted for age were used to assess the association between tests and clinical variables. Using z-scores derived from the mean and standard deviation of the CG, we compared the MVIC and the 30-STS power in PwHA. RESULTS: PwHA showed lower MVIC and 30-STS power compared to CG (p < .001; large effect size d > .8). Lower 30-STS power was associated with greater joint impairment and greater fear of movement, whereas MVIC showed no association with clinical variables. 30-STS power showed a lower z-score compared to MVIC (p < .001). In addition, 30-STS power detected 47% of PwHA with motor impairment compared to 0% for MVIC (p = .002). CONCLUSIONS: Our results suggest that 30-STS power may be more effective than knee extensors MVIC in detecting motor impairment in PwHA. Consequently, lower limb skeletal muscle power, rather than maximum knee extensor strength, appears to be more affected in PwHA.

The importance of a healthy lifestyle despite chronic pain: Prospective cohort with 11-year register follow-up.

The purpose of the study was to investigate to which extent a healthy lifestyle in female healthcare workers with chronic pain contributes to reducing the risk of disability pension. We conducted a prospective cohort study with an 11-year registry follow-up. Overall, 2386 Danish female healthcare workers with chronic pain completed a questionnaire about work and lifestyle (leisure-time physical activity, smoking, and body mass index (BMI)). Data on disability benefit payments were obtained from the Danish Register for Evaluation of Marginalization. Two models (minimally and fully adjusted for different potential confounders) were tested using the Cox proportional hazards model. During the follow-up period, 17.9% of the healthcare workers obtained disability pension. Low levels of leisure time physical activity (reference: moderate level) increased the risk of disability pension in the minimally (Hazard Ratio: 1.38 (95% CI: 1.14-1.69)) and fully adjusted models (Hazard Ratio: 1.27 (95% CI: 1.04-1.56)). Being highly physically active, as opposed to being moderately active, did not confer additional protection. Additionally, a positive association was observed between smoking and disability pension in the minimally adjusted model (Hazard Ratio: 1.27 (95% CI: 1.05-1.54)). BMI was not an influential factor. In female healthcare workers with chronic pain, at least moderate levels of physical activity is a protective factor for disability pension. Effective promotion strategies should be designed for both workplace and non-workplace settings.

Risk profile and mode of transmission of Mpox: A rapid review and individual patient data meta-analysis of case studies.

Since May 2022, an outbreak of Mpox in non-endemic countries has become a potential public health threat. The objective of this rapid review was to examine the risk profile and modes of transmission of Mpox. PubMed, Web of Science, and Scopus were searched from inception through July 30 to collect case reports/series on patients with Mpox infection. For meta-analysis, data on the total number of participants and deaths by binary categories of exposure (age, sex, country, other co-infections or existing conditions, and mode of contagion) were used. A total of 62 studies (4659 cases) were included. Most cases came from Africa (84.3%), followed by Europe (13.9%). In 63.6% of the cases, the mode of contagion was human contact, while 22.8% of the cases were by animal contact, and 13.5% were unknown or not reported. The mortality rate was 6.5% throughout these studies. The risk of mortality was higher in the younger age group (risk difference: 0.19; 95% CI: 0.02-0.36), in cases with other co-infections or current chronic conditions (risk difference: 0.03; 95% CI: 0.01-0.05) and in the category of low- and middle-income countries (risk difference: 0.06; 95% CI: 0.05-0.08). There were no significant differences with respect to sex or mode of contagion. These results help to understand the major infection pathways and mortality risk profiles of Mpox and underscores the importance of preventing outbreaks in specific settings, especially in settings densely populated by children, such as day care centres and schools.

Correlation of Self-Efficacy for Pelvic Floor Muscle Exercise with Symptoms of Stress Urinary Incontinence in Women.

INTRODUCTION AND HYPOTHESIS: Self-efficacy for pelvic floor exercises, i.e. confidence in achieving pelvic floor contractions, may predict adherence to treatment. However, there is a paucity of literature investigating the clinical relevance of this outcome. The aim was to determine the relationship between self-efficacy for pelvic floor exercise and symptom severity, pelvic floor distress and impact on quality of life, as well as sociodemographic characteristics and pelvic floor muscle strength in women with stress urinary incontinence (SUI). METHODS: A cross-sectional study was conducted in women with SUI. The Spanish version of the Broome Pelvic Muscle Self-Efficacy Scale was used to assess self-efficacy for pelvic floor exercise. The dependent variables were: urinary incontinence symptoms using the International Consultation on Incontinence Questionnaire, short form (ICIQ-SF), pelvic floor distress symptoms using the Urogenital Distress Inventory-6, impact on quality of life using the Incontinence Impact Questionnaire (IIQ-7), leakage using the 1-h pad test, number of SUI episodes per week and pelvic floor muscle strength. RESULTS: A total of 56 women with a median age of 44.5 years were included. Self-efficacy for pelvic floor exercise correlated negatively and moderately with the ICIQ-SF (r = -0.529; p < 0.001), IIQ-7 (r = -0.442; p = 0.001), 1-h pad test (rs = -0.467; p < 0.001); and number of SUI episodes/week (rs = -0.489; p < 0.001). Correlation with the other outcomes was weak or non-existent. Linear regression with forward selection showed that the ICIQ-SF was the variable most related to self-efficacy (ß: -3.01, 95% CI: -4.03 to -1.69). CONCLUSIONS: These findings highlight the importance of assessing self-efficacy for pelvic floor exercise in the treatment of women with SUI. Future prospective studies are needed to confirm these findings.

Association Between Pain Coping and Symptoms of Anxiety and Depression, and Work Absenteeism in People With Upper Limb Musculoskeletal Disorders: A Systematic Review and Meta-analysis.

OBJECTIVE: To determine the prospective association of pain coping strategies and symptoms of anxiety and depression with work absenteeism in people with upper limb musculoskeletal disorders. DATA SOURCES: A systematic search of PubMed, Web of Science, Embase, Cochrane Library, and Scopus databases was conducted from inception to September 23, 2022. STUDY SELECTION: Prospective observational studies of adults with upper limb musculoskeletal disorders were included. Included studies had to provide data on the association of pain coping strategies (catastrophizing, kinesiophobia, self-efficacy or fear avoidance) or symptoms of anxiety and depression with work absenteeism. DATA EXTRACTION: Study selection, data extraction, and assessment of methodological quality (Newcastle Ottawa Scale) were performed by 2 independent authors. Random-effects models were used for quantitative synthesis. DATA SYNTHESIS: Eighteen studies (n=12,393 participants) were included. Most studies (77.8%) reported at least 1 significant association between 1 or more exposure factors (pain coping strategies or symptoms of anxiety and depression) and work absenteeism. Meta-analyses showed a statistically significant correlation between the exposure factors of catastrophizing (r=0.28, 95% confidence interval [CI]: 0.15 to 0.40; P<.0001) and symptoms of anxiety and depression (r=0.23, 95% CI: 0.10 to 0.34; P=.0003) with work absenteeism. The correlation between self-efficacy and work absenteeism was non-significant (r=0.24, 95% CI: -0.02 to 0.47; P=.0747). CONCLUSIONS: Rehabilitation teams should consider assessing catastrophizing and symptoms of anxiety and depression to identify patients at risk for work absenteeism. Addressing these variables may also be considered in return-to-work programs for individuals with upper limb disorders.

Risk and Preventive Factors for Depressive Symptoms Among Older Chilean Adults During the SARS-CoV-2 Outbreak: A Longitudinal Study.

OBJECTIVE: To specifically examine the multiple factors related to the increase in depressive symptoms during the COVID-19 outbreak in older adults in Chile. METHOD: A longitudinal study was conducted using a dataset from a nationally representative survey cohort of Chilean older adults followed at three time points during the COVID-19 outbreak. The main outcome was depressive symptoms (Patient Health Questionnaire scale). The independent variables included: age, sex, educational level, geographic area, living alone, self-perceived health, self-reported resilience, loneliness, and social isolation. RESULTS: A total of 424 older adults were included. Female sex (ß = 0.95, 95% CI: 0.22 to 1.68) and loneliness (ß = 1.21, 95% CI: 1.05 to 1.37) were the main risk factors for an increase in depressive symptoms in older adults. In contrast, living outside the metropolitan region (ß=-0.70, 95% CI: -1.39 to -0.02), living in company (ß=-0.34, 95% CI:-1.24 to 0.56), having better self-perceived health (ß=-5.04, 95% CI:-6.33 to -3.75) and greater resilience (ß=-0.30, 95% CI: -0.38 to -0.23) were preventive factors. CONCLUSION: These results provide useful evidence to develop mental health prevention or control strategies for older adults. CLINICAL IMPLICATIONS: The findings highlight the importance of a holistic approach to health care for older adults that integrates strategies to address loneliness, foster resilience, and promote an active social life.

Gender differences on effects of forearm rotation on compressive stiffness of flexor carpi ulnaris during submaximal handgrip contractions.

Little is known about gender differences in stiffness of forearm muscles during voluntary actions. This study aimed to investigate the effect of forearm rotation on flexor carpi ulnaris (FCU) stiffness in men and women during submaximal handgrip contractions. During a single session, measurements were made on 20 young participants (9 females). Two positions of the forearm were compared in random order with the elbow flexed 90 degrees: (i) neutral position and (ii) maximal supination. In each position, participants performed two submaximal handgrip contractions at 25% and 50% of maximal voluntary contraction, while compressive stiffness was collected using a hand myometer (MyotonPRO). A mixed repeated measurement ANOVA was applied to assess the interaction between gender, forearm position, and contraction intensity. The FCU stiffness is affected by handgrip contraction intensity (p < 0.001), gender (p < 0.001), BMI (p = 0.009), and forearm rotation (p = 0.007). Only the gender factor was found to have significant interaction with forearm rotation (p = 0.037). Men's FCU was stiffer than women's in both positions and contraction intensities (p < 0.05). Only in men a significant increase in FCU stiffness was observed when comparing contraction intensities at both forearm positions (p < 0.05), as well as when the forearm was rotated from neutral to supine at both intensities (p < 0.05). In conclusion, FCU stiffness during handgrip contraction differed significantly between men and women. Women have fewer stiffness changes in FCU when performing different levels of handgrip contraction. We also observed that only men increased FCU stiffness by changing the forearm position from neutral to supine position for both handgrip intensities.

Exercise variables and pain threshold reporting for strength training protocols in people with haemophilia: A systematic review of clinical trials.

INTRODUCTION: Although strength exercise is often prescribed for people with haemophilia (PWH), it remains unknown how exercise variables and pain thresholds are used to prescribe strength training in PWH. AIM: To analyse how strength exercise variables and pain thresholds have been used to prescribe strength training in PWH. METHODS: A systematic search was conducted in PubMed, Embase, Web of Science, CENTRAL and CINAHL databases from inception to 7 September 2022. Studies whose intervention included strengthening training in adults with haemophilia were included. Two independent reviewers were involved in study selection, data extraction and risk of bias assessment. RESULTS: Eighteen studies were included. The least reported variables among the studies were: prophylactic factor coverage (11.1%), pain threshold/tolerability (5.6%), intensity (50%), total or partial range of motion (27.8%), time under tension (27.8%), attentional focus modality (0%), therapist experience in haemophilia (33.3%) and adherence assessment (50%). In contrast, weekly frequency (94.4%), duration (weeks) (100%), number of sets/repetitions (88.9%), repetitions to failure/not to failure (77.8%), types of contraction (77.8%), rest duration (55.6%), progression (55.6%), supervision (77.8%), exercise equipment (72.2%) and adverse event record (77.8%) had a higher percentage of reported (>50% of studies). CONCLUSION: Future research on strength training for PWH should improve information on pain threshold and other important variables such as prophylactic factor coverage, intensity, range of motion, time under tension, attentional focus modality, therapist experience in haemophilia and adherence assessment. This could improve clinical practice and comparison of different protocols.

Barriers and facilitators of physical activity in adults with severe haemophilia: A qualitative study.

BACKGROUND: People with haemophilia (PWH) tend to be less physically active than the general population, but there is a lack of research on the specific barriers and facilitators affecting their participation in physical activities. OBJECTIVES: This study aims to explore perceived barriers and facilitators to physical activity in severe PWH. DESIGN: An explorative qualitative study based on focus groups. METHODS: Four focus groups including 16 participants (severe haemophilia A patients) were conducted to examine the factors perceived as facilitators or barriers to haemophiliacs engaging in physical activity. One researcher conducted a thematic analysis of all data. RESULTS: Three themes were identified: body function, personal factors, and environmental factors. Key facilitators identified were access to prophylaxis treatment to reduce the risk of bleeding(s), the enjoyability of physical activity, fitness and health motives, social interaction, support, and low cost. PWH faced additional barriers to being physically active including hurtful joints, mobility issues, haemophilic arthropathy, dislike or disinterest, lack of motivation, fear of injury, tiredness, lack of time, lack of guidance, negative social influence, restriction, and lack of coordination of prophylaxis treatment. CONCLUSION: This exploratory study demonstrated that participation in physical activity in PWH is influenced not only by their own abilities and attitudes, but also by external variables, including family, friends, healthcare professionals, structures, and communities. The results of this study may be used to assist caregivers and health professionals, inform programs, interventions, and policies to promote physical activity and health in severe PWH.

Effectiveness of progressive moderate-vigorous intensity elastic resistance training on quality of life and perceived functional abilities in people with hemophilia: Secondary analysis of a randomized controlled trial.

INTRODUCTION AND AIM: Strength exercise training is advised for people with hemophilia (PWH); however, few studies have been published and have methodological limitations. The purpose of this study was to evaluate the effectiveness of progressive elastic resistance training on quality of life and perceived functional abilities in PWH. METHODS: Participants were randomly allocated to the intervention (n = 10) or control (n = 10) group. The intervention group performed progressive moderate-vigorous elastic resistance training (2 days/week, a total of 8 weeks), focusing on the muscles of the knee, elbow, and ankle joints. The control group continued its usual daily activities for 8 weeks. Quality of life (A36 Hemofilia-QoL®) and perceived functional abilities (Haemophilia Activities List) were assessed at baseline and an 8-week follow-up. RESULTS: The intervention group improved the quality-of-life dimension of joint damage perception in comparison to the control group (p = .015, large effect size). Regarding perceived functional abilities, the intervention group improved lying, sitting, kneeling, and standing (p = .006, small effect size), and complex lower extremities activities (i.e., walking short and long-distance, and up-down stairs) (p = .006, small effect size) compared to the control group. No other significant differences were observed. CONCLUSIONS: Eight weeks of progressive moderate-vigorous elastic resistance training in PWH improve the quality-of-life dimension of joint damage perception and perceived functional abilities (lying/sitting/kneeling/standing, and complex lower extremities activities). Our results suggest a limited effect of the program on the other items of quality of life measured by the questionnaire as emotional functioning, mental health, and social relationships. Importantly, no serious adverse effects occurred.

Exercise-based intervention as a nonsurgical treatment for patients with carpal instability: A case series.

BACKGROUND: Although the important roles of proprioception and neuromuscular control in carpal instabilities under laboratory conditions have been recognized, only a few studies have translated this knowledge into a routine clinical practice. PURPOSE: This study aimed to evaluate the results of a personalized rehabilitation in patients with carpal instability on functionality and pain intensity. STUDY DESIGN: This was a case series study. METHODS: This case series included 39 adults (mean age: 38.2 ± 14.0 years; 16/23 females/males) diagnosed with carpal instability (radial or ulnar) with indication for orthopedic treatment. The disabilities of the arm, shoulder, and hand questionnaire was used to assess upper limb functionality. Pain perception was assessed using a visual analog scale. Exercise-based physiotherapy interventions were performed according to the clinical needs of the patients for at least 6 weeks (2-3 sessions per week). For the treatment of radial instability (n = 13), strengthening exercises of the abductor pollicis longus, extensor carpi radialis longus, flexor carpi radialis, and pronator quadratus muscles were prescribed. For the treatment of ulnar instability (n = 24), extensor carpi ulnaris and pronator quadratus were trained. All patients underwent proprioceptive training in open kinetic chain and closed kinetic chain, as well as strengthening of the unaffected hand. Changes before and after treatment were compared using the nonparametric Wilcoxon signed rank test. RESULTS: A significant improvement with a large effect size in disabilities of the arm, shoulder, and hand (P < .001; d = 2.9) and visual analog scale (P < .001; d = 3.2) scores were obtained after treatment. Moreover, the changes were greater than the minimal clinically important difference of 10.8 and 1.4, respectively. Similar results were found when patients with radial instability and ulnar instability were analyzed separately. CONCLUSIONS: Personalized training with specific proprioception and strengthening exercises produces improvements in functionality and pain perception in our cohort of people with carpal instability. These results highlight the importance of multicomponent exercise in the treatment of wrist instability. Future randomized clinical trials should further investigate the effectiveness of this protocol.

Exercise capacity in people with haemophilia: A systematic review.

INTRODUCTION: Exercise capacity has been established as a protective factor against joint impairment in people with haemophilia (PWH). However, little is known about how exercise capacity is affected in PWH. AIM: To analyse exercise capacity, as assessed by standardised laboratory or field tests in PWH. METHODS: A systematic review was conducted to identify manuscripts investigating physical capacity in PWH. An electronic search of PubMed/MEDLINE, Embase, Web of Science, CENTRAL and CINAHL was conducted from inception to 13 April, 2022. Two independent reviewers performed data extraction and assessed study quality using the critical appraisal tools of the Joanna Briggs Institute. RESULTS: Nineteen studies with 825 patients were included. Most studies used the six-min walk test (6MWT) or peak/maximal oxygen consumption (VO2 max). In children, the distance walked ranged from 274 ± 36.02 to 680 ± 100 m. In adults, the distance walked ranged from 457.5 ± 96.9 to 650.9 ± 180.3 m. VO2 max ranged from 37 ± 8 to 47.42 ± 8.29 ml kg-1  min-1 . Most studies reported lower values of exercise capacity compared to standardised values. Overall, the quality of the studies was moderate. CONCLUSION: Most of the studies showed that PWH have lower exercise capacity compared to reference values of 6MWT or VO2 max. Based on these results, it is necessary to emphasise in both the promotion and the prescription of physical exercise in PWH.

Effectiveness of physical exercise on postural balance in patients with haemophilia: A systematic review.

INTRODUCTION: Balance training is important to improve balance and to decrease the risk of falls in patients with haemophilia (PWH). AIM: To analyse the current knowledge about the effectiveness of physical exercise on postural balance in PWH. METHODS: A systematic search for clinical trials, published before November 2021, was conducted using the following electronic databases: PubMed/MEDLINE, Web of Science, Embase, Wiley Online Library and the Cochrane Central Register of Controlled Trials (CENTRAL). Two independent reviewers extracted the data and assessed the risk of bias. The certainty of the evidence was analyzed using GRADE. RESULTS: A total of ten studies involving 304 patients were included. The studies performed strength and balance exercises, and some included flexibility, mobilization, and/or aerobic exercises in their training programs. Postural balance was evaluated using a force platform and the one leg stand test was the most frequently used. Only five exercise programs achieved a significant increase in balance (pre-post) with a strength, postural balance, flexibility, and aerobic intervention. In general, the quality rate of the risk of bias was fair but the overall quality of the evidence across the studies was very low. CONCLUSION: Five studies showed that there is a positive change in balance after the intervention. However, there is currently an unclear demonstration of evidence for the use of physical exercises to improve postural balance in people with haemophilia. Further studies with a higher methodological quality are needed.

Effects of Cognitive and Mental Health Factors on the Outcomes Following Carpal Tunnel Release: A Systematic Review and Meta-analysis.

OBJECTIVE: To determine the effects of the cognitive and mental health factors on the outcomes after carpal tunnel release (CTR). DATA SOURCES: Embase, PubMed/MEDLINE, Web of Science, Cumulative Index to Nursing and Allied Health, and Cochrane Central Register of Controlled Trials databases from inception to August 14, 2021. STUDY SELECTION: Randomized controlled trials and observational studies of patients with CTR were included. The included studies aimed to determine the effect of the cognitive (catastrophic thinking, kinesiophobia, self-efficacy) or mental health factors (symptoms of anxiety and depression) on the outcomes at least 3 months post CTR. DATA EXTRACTION: Two independent reviewers performed data extraction and assessed the risk of bias. Data were extracted using a standardized protocol and reporting forms. The risk of bias of the included studies was assessed using the Quality in Prognosis Studies risk-of-bias tool. Random-effects models were used for meta-analysis. DATA SYNTHESIS: A total of 15 studies involving 2599 patients were included in this systematic review. The majority of studies indicate a significant association between the cognitive or mental health factors and outcomes after CTR. Quantitative analysis showed a moderate association of symptoms of depression on symptom severity (n=531; r=0.347; 95% CI, 0.205-0.475; P≤.0001), function (n=386; r=0.307; 95% CI, 0.132-0.464; P=.0008), and pain (n=344; r=0.431; 95% CI, 0.286-0.558; P≤.0001). In general, the risk of bias in the included studies was low. CONCLUSIONS: This systematic review and meta-analysis showed that symptoms of depression have a moderate association with symptom severity, function, and pain after CTR. Symptoms of anxiety, catastrophic thinking, and self-efficacy are also important indicators of poor postsurgery outcomes. Physicians, physical therapists, and occupational therapists should consider evaluating these variables in patients undergoing CTR.

30 s sit-to-stand power is positively associated with chest muscle thickness in COVID-19 survivors.

INTRODUCTION: After hospitalization, early detection of musculoskeletal sequelae might help healthcare professionals to improve and individualize treatment, accelerating recovery after COVID-19. The objective was to determine the association between the 30s sit-to-stand muscle power (30s-STS) and cross-sectional area of the chest muscles (pectoralis) in COVID-19 survivors. METHOD: This cross-sectional study collected routine data from COVID-19 survivors one month after hospitalization: 1) a chest computed tomography (CT) scan and 2) a functional capacity test (30s-STS). The pectoralis muscle area (PMA) was measured from axial CT images. For each gender, patients were categorized into tertiles based on PMA. The 30s-STS was performed to determine the leg extension power. The allometric and relative STS power were calculated as absolute 30s-STS power normalized to height squared and body mass. The two-way ANOVA was used to compare the gender-stratified tertiles of 30s-STS power variants. RESULTS: Fifty-eight COVID-19 survivors were included (mean age 61.2 ± 12.9 years, 30/28 (51.7%/48.3%) men/women). The two-way ANOVA showed significant differences between the PMA tertiles in absolute STS power (p = .002) and allometric STS power (p = .001). There were no significant gender x PMA tertile interactions (all variables p > .05). The high tertile of PMA showed a higher allometric STS power compared to the low and middle tertile, p = .002 and p = .004, respectively. Absolute STS power and allometric STS power had a moderate correlation with the PMA, r = 0.519 (p < .001) and r = 0.458 (p < .001) respectively. CONCLUSION: The 30s-STS power is associated with pectoralis muscle thickness in both male and female COVID-19 survivors. Thus, this test may indicate global muscle-wasting and may be used as a screening tool for lower extremity functional capacity in the early stages of rehabilitation planning in COVID-19 survivors.

The Relevance of Dual Tasking for Improving Trunk Muscle Endurance After Back Surgery.

OBJECTIVE: To determine the effect of dual tasking on trunk muscle endurance in patients after lumbar diskectomy. DESIGN: Cross-sectional study. SETTING: Rehabilitation hospital setting. PARTICIPANTS: Individuals (N=14) undergoing primary lumbar diskectomy. INTERVENTION: Using a randomized design on 2 separate days, muscle endurance was evaluated during prone bridging and Biering-Sorensen tests. Each test was randomly performed under 2 cognitive conditions: single task without cognitive condition and self-regulated dual task (ie, mathematical task). MAIN OUTCOME MEASURES: The primary outcomes were time to failure and pain assessed by the visual analog scale from 0 to 100 mm. The secondary outcomes were kinesiophobia assessed by the Tampa Scale and disability assessed by the Oswestry Disability Index. Associations were tested using a repeated measures analysis of variance with relevant interaction test. RESULTS: A significant interaction between condition, endurance tests, and kinesiophobia (P=.005) was found. The post hoc comparison showed positive effects between cognitive conditions in both endurance tests (prone bridging test: mean difference, 15.7s; 95% confidence interval [CI], 7.5-24s; P=.001; Biering-Sorensen test: mean difference, 7.9s; 95% CI, 1.9-14s; P=.014). The linear regression analysis between the Tampa Scale for Kinesiophobia and the difference of time to failure between cognitive conditions showed a positive correlation only during the Biering-Sorensen test (r=0.80; P=.001). CONCLUSIONS: A self-regulated dual task increases trunk muscle endurance in patients after lumbar diskectomy. The results suggest that the difference observed in time to failure between the single task and dual task is associated with fear avoidance, especially during back extension. This strategy seems especially relevant for patients with high levels of fear avoidance and may be used to improve trunk muscle endurance.

Qualitative ultrasonography scale of the intensity of local twitch response during dry needling and its association with modified joint range of motion: a cross-sectional study.

BACKGROUND: The relevance of local twitch response (LTR) during dry needling technique (DNT) is controversial, and it is questioned whether LTR is necessary for successful outcomes. Furthermore, because the LTR during the deep DNT may be evoked with different intensities, it is unknown whether the magnitude of LTR intensity is associated with optimal clinical results, especially concerning to the effects of joint maximal range of motion (ROM). This study aimed to (i) determine whether visual inspections can quantify the LTR intensity during the DNT through a qualitative ultrasonography scale of LTR intensity (US-LTR scale), and (ii) assess the differences of US-LTR scale associated with changes in the maximal joint ROM. METHODS: Using a cross-sectional design, seven asymptomatic individuals were treated with DNT in the latent myofascial trigger point in both medial gastrocnemius muscles. During DNT, three consecutive LTRs were collected. The US-LTR scale was used to classify the LTRs into strong, medium, and weak intensities. The categories of US-LTR were differentiated by the velocity of LTRs using the optical flow algorithm. ROM changes in ankle dorsiflexion and knee extension were assessed before and immediately after DNT. RESULTS: The US-LTR scale showed the third LTR was significantly smaller than the first one (p < 0.05). A significant difference in velocity was observed between US-LTR categories (p < 0.001). A significant difference in the ROM was observed between the strong and weak-medium intensity (p < 0.05). CONCLUSIONS: The present findings suggest that the LTR intensity can be assessed using a qualitative US-LTR scale, and the effects of DNT on joint maximal ROM is maximized with higher LTR intensity. This study reports a novel qualitative method for LTR analysis with potential applications in research and clinical settings. However, further research is needed to achieve a broader application.

Use of sit-to-stand test to assess the physical capacity and exertional desaturation in patients post COVID-19.

We propose the use of the 1-minute sit-to-stand test (1STST) to evaluate the physical capacity and exertional desaturation one month after discharge in a sample of patients who survived COVID-19 pneumonia. This was a cross-sectional study that collected routine data from consecutive patients admitted to the outpatient program in a public hospital in Chile. Patients were asked to complete a 1STST. Data were analyzed according to those with and without a prolonged hospital stay of >10 days. Eighty-three percent of the patients were able to complete the test (N = 50). The median age was 62.7 ± 12.5 years. The average number of repetitions in the 1STST was 20.9 ± 4.8. Thirty-two percent of patients had a decrease in pulse oxygen saturation (SpO2) ≥ 4 points. The prolonged hospital stay subgroup had a significant increase in exertional desaturation (mean difference = 2.6; 95% CI = 1.2 to 3.9; p = 0.001) and dyspnea (mean difference = 1.1; 95% CI = 0.4 to 2.1; p = 0.042) compared to the group of length of stay ≤10 days. In-hospital survivors of COVID-19, the 1STST showed a decrease in physical capacity at one month in those 90% who were able to complete it. The 1STST was able to discriminate between those with and without a prolonged hospital stay and was able to detect exertional desaturation in some patients.