Incremental Shuttle Walk Test Research Articles

A randomized controlled trial of an eight-week cardiac rehabilitation home verse hospital exercise programme for post coronary cardiac bypass patients

Abstract Background The prevalence and morbidity and mortality rates of coronary heart disease (CHD) continue to increase towards epidemic proportions in the Kingdom of Saudi Arabia (KSA). Despite the advances in Cardiac surgery, currently there are no established out-patient phase program of Cardiac Rehabilitation (CR) for CHD participants in KSA. Aim of the study To evaluate the effectiveness of a home-based CR (Home CR) program using individualized exercise (Physiotools-R) and out-patient phase of CR (Hospital CR) program compared to standard care of home instructions on physical function, physiological and psychological status, body composition and the quality of life of the CHD participants post Coronary Artery Bypass Graft (CABG) surgery. Methods 73 participants post-CABG surgery were randomly assigned to one of three groups: Hospital CR group (n=25), Home CR group (n=24) and Control group (n=24). Outcome measures include Incremental Shuttle Walk Test (ISWT), Metabolic Equivalent Tasks (METs), Psychosocial outcomes and body composition were recorded at baseline, eight weeks of CR intervention, and after four weeks of observation follow up. Intervention: Hospital CR program comprised of group based Aerobic Circuit Training, home based structured individualized exercise program. Each programme had 2 hours’ sessions, 3 times a week for 8 weeks, followed by four weeks of observation follow-up. The control group followed standard care comprised usual advice on post-operation precautions. Results Post intervention, there was an increase in mean ISWT score from baseline in both the home-based cardiac rehabilitation and outpatient-based cardiac rehabilitation groups (66 [0.58] m and 71 [9.19] m, respectively). No difference was observed in the control group. At the 4-week follow-up, both intervention groups showed statistically significant improvements in all outcome measures (ISWT, metabolic equivalence tasks, HADS-A, HADS-D, and Short Form-36) compared with baseline (all P < .001). The home-based cardiac rehabilitation group showed statistically continuous improvement compared with the outpatient-based cardiac rehabilitation group. The control group did not show any significant changes across time in outcome measures Conclusion Home-based CR is as effective as hospital-based CR at improving exercise capacity in patients following CABG surgery. Home-based CR appears to be more effective at maintaining these improvements with no further input in the longer term.

Maximum heart rate prediction equations based on field-tests with adequate clinical applicability for aerobic exercise prescription to individuals after stroke

Objectives 1) to develop two maximum heart rate (HRmax) prediction equations for individuals after stroke; 2) to investigate its validity. Methods The HRmax was obtained by a Cardiopulmonary Exercise Test (CPET). Participants also completed the Six-minute Walking Test (6MWT) and the Incremental Shuttle Walking Test (ISWT). Results 60 individuals (54(12) years; 64(69) months after stroke) were included. Twenty individuals (58(10) years; 67(61) months after stroke) were included in the cross-validation group. For the first model, the following equation was generated (equation-1): HRmax= 87.655 + 0.726 (HRpeak in the 6MWT) − 0.386 (age in years), (R2=0.53; Standard Error of the Estimate (SEE)= 15.35; p < 0.0001). For the second model, the following equation was generated (equation-2): HRmax= 96.523 + 0.681 (HRpeak in the ISWT) − 0.039 (walking distance in meters in the ISWT) − 0.400 (age in years), (R2=0.53; SEE = 15.51; p < 0.0001). Significant and high magnitude agreement was found between the HRmax obtained by the CPET and the predicted HRmax by equation-1 (ICC= 0.85; 95% CI= 0.63 − 0.94) and equation-2 (ICC= 0.72; 95% CI= 0.29 − 0.89). Conclusions Two HRmax prediction equations have been developed and showed adequate validity. Professionals will have the option of choosing one of the two equations to use.

Impact of home-based exercise on residual kidney function in patients initiating peritoneal dialysis: A feasibility multicenter randomized controlled trial.

Although the impact of aerobic exercise (AE) and resistance training (RT) on peritoneal dialysis (PD) patients is well established, the impact of exercise programs on residual kidney function (RKF) has not been elucidated. Patients were randomly assigned to either the exercise (n = 25) or control groups (n = 30). Patients in the exercise group performed AE three times a week and RT twice a week at home for 24 weeks. The control group did not receive any specific intervention. The primary outcome was RKF, assessed by residual glomerular filtration rate (rGFR). Secondary outcomes included urinary protein levels, distance covered in the incremental shuttle walking test (ISWT), and glycated hemoglobin (HbA1c) percentages. Linear mixed-effects models showed no significant changes in mean rGFR between the exercise and control groups at 12 weeks (-0.40; 95% confidence interval (CI): -2.17, 1.36; p = 0.65) and at 24 weeks (0.65; 95% CI: -1.15, 2.45; p = 0.48). There was a trend toward improvement in mean urinary protein level and ISWT results, and a significant decrease in mean HbA1c percentage at 24 weeks in the exercise group (-1.07, 95% CI: -2.29, 0.15, p = 0.09; 37.7, 95% CI: -10.1, 85.5, p = 0.12; -0.57, 95% CI: -0.97, -0.18, p = 0.005, respectively) compared to the control group. The 24-week home-based exercise program did not demonstrate beneficial effects on RKF in incident PD patients. Nonetheless, it may have an impact on reducing urinary protein levels and HbA1c percentages.

Does cognitive function affect functional capacity and perceived fatigue severity after exercise in patients with coronary artery disease?

Successful execution of exercise-based cardiac rehabilitation programs, an important branch of physiotherapy in individuals with coronary artery disease (CAD), depends on adequate cognitive abilities. It has been identified that coronary microvascular dysfunction, marked by reduced coronary flow reserve, is associated with impaired cerebral blood flow, affecting haemodynamic and cognitive performance. This study aimed to investigate how cognitive function influences functional capacity and differences in fatigue perception in CAD patients. Fifty CAD patients, with an average age of 59.40±6.58years, were evaluated for comorbidities (Charlson comorbidity index), number of CAD risk factors (hypertension, diabetes mellitus, dyslipidaemia, smoking, and physical inactivity), cognitive performance (Montreal cognitive assessment scale [MoCA]), functional capacity (incremental shuttle walk test [ISWT]), exercise-induced fatigue (Modified Bourg Scale), and physical activity (PA) levels (international physical activity questionnaire-short form). Analyses focused on the links between MoCA scores and CRF, ISWT outcomes, and differences in fatigue perception. Findings revealed a strong positive link between MoCA scores and ISWT performance (r=0.83, p<0.001), and a strong inverse relationship between CRF and MoCA scores (r=-0.95, p<0.001). In addition, MoCA score was positively correlated with differences in fatigue perception (r=0.88, p<0.001). These results highlight the critical role of cognitive function in determining functional capacity and managing fatigue in CAD patients. They also suggest that cognitive interventions may be a potential adjunctive approach in physiotherapy programmes.

Effect of Perioperative Inhaled Tiotropium for patients with chronic Obstructive Pulmonary disease in Esophageal cancer surgery (EPITOPE): an open-label, randomized, parallel-group pilot study.

Chronic obstructive pulmonary disease (COPD) is a risk factor for pneumonia following esophagectomy. This study aimed to investigate the efficacy of perioperative inhaled tiotropium in patients with COPD undergoing esophagectomy. This open-label, randomized controlled trial randomly assigned 32 patients with COPD undergoing esophagectomy to conventional management or addition of tiotropium inhalation. The intervention group received tiotropium from two weeks before esophagectomy until the final evaluation one month after esophagectomy. The primary outcome was the incidence of pneumonia within 30 postoperative days. We also assessed the changes and the percentages from baseline in pulmonary function and walking distance of the incremental shuttle walking test to just before esophagectomy and final evaluation. Enrolled patients were randomly assigned to the control group (n = 18) and the intervention group (n = 14). Pneumonia was recorded in 4 (28.6%) and 5 (27.8%) patients in the intervention and control groups, respectively (risk difference: 0.8%, 95% confidence interval: - 30.6 to 32.2). The intervention group demonstrated a significant improvement in pulmonary function and walking distance preoperatively. Further, the pulmonary function test was significantly better preoperatively in the intervention group than in the control group. Postoperatively, pulmonary function deterioration was more significant in the control group than in the intervention group. Preoperative tiotropium inhalation significantly improved pulmonary function and exercise tolerance in patients with COPD undergoing esophagectomy. The perioperative tiotropium did not reduce pneumonia after esophagectomy, but it may contribute to patient recovery by reducing postoperative pulmonary function deterioration.

Effects of Inspiratory Muscle Training on Stress Urinary Incontinence in North African Women: A Randomized Controlled Trial.

Pelvic floor muscles (PFMs) are involved in respiratory mechanisms. Additionally, stress urinary incontinence (SUI) can affect physical function. This randomized controlled trial was aimed at investigating the effects of inspiratory muscle training (IMT) on SUI severity, PFM function, and physical function in Tunisian women with SUI. Twenty-seven incontinent women were randomly assigned to either the experimental group or the control group. The following parameters were assessed: respiratory muscle strength (RMS; maximal inspiratory and expiratory pressures), SUI severity (Urogenital Distress Inventory-6; Incontinence Impact Questionnaire-7; pad test), PFM function (Modified Oxford Scale, electromyography, and endurance), and physical function (Timed Up & Go test; 6-min walk test; incremental shuttle walking test). IMT was conducted using threshold IMT. The IMT program significantly reduced the severity of SUI (p < 0.01), improved PFM function (p < 0.001), enhanced physical function (p < 0.01), and increased RMS (p < 0.001). Inspiratory muscle training could be an effective method for improving pelvic floor disorders and physical function in women with SUI.

Short physical performance battery in aerobic capacity and physical activity evaluation of individuals with peripheral artery disease: An exploratory study

BackgroundPeripheral artery disease (PAD) negatively affects functional ability. Persons with PAD experience gait limitation, and changes in mobility, muscle strength, and balance. Assessing individuals with PAD with tests of lower limb performance during activities other than walking may provide information about aerobic capacity. ObjectiveTo evaluate whether the Short Physical Performance Battery (SPPB) can discriminate aerobic capacity and level of physical activity in individuals with PAD. MethodsThe SPPB, Incremental Shuttle Walking Test (ISWT), and the Human Activity Profile (HAP) were completed by 42 volunteers with PAD. The sample was stratified into tertiles by the distance walked in the ISWT and the Adjusted Activity Score (AAS) of HAP. One-way analysis of variance with a post-hoc least significant difference was used to compare the SPPB values between tertiles of ISWT and AAS of HAP. P-value < 0.05 was considered significant. ResultsThe mean age was 65 ± 7.7 years, the walking distance was 259.29 ± 115.28 m, and AAS of HAP was 68.36 ± 9.04. There was a significant difference in the total SPPB score and scores for gait speed and sit-to-stand for groups stratified by ISWT and AAS of HAP(p = 0.01). The balance domain was different only for groups stratified into tertiles by AAS of HAP(p = 0.04). ConclusionThe results of this study have clinical relevance for the evaluation of individuals with PAD at different aerobic and physical activity levels. The SPPB is a viable alternative in the practice of the specialty of vascular nursing and other areas of health to assess patients whose ability to perform walking tests is often limited.

A cardiac rehabilitation programme based on neuromuscular training improves the functional capacity of patients with acute coronary syndrome: a preliminary randomised controlled trial

ObjectivesTo evaluate the effects of a cardiac rehabilitation programme based on neuromuscular training (NMT) compared with classic rehabilitation strength training (CRST) in patients diagnosed with acute coronary syndrome (ACS). DesignPreliminary randomised, double-blinded, parallel clinical trial. SettingUniversity health clinic in Valencia, Spain. ParticipantsThirty patients with ACS, InterventionsPatients were assigned to one of two groups at random: the NMT group (n=15) and the CRST group (n=15). All patients attended the 20 sessions of the exercise programme. Main outcome measuresThe primary outcome was the Incremental Shuttle Walk Test (ISWT). The secondary outcomes were the Chester Step Test (CST), the 30-Second Chair Stand Test (30CST), and hip flexor dynamometry. Assessments were made at baseline, immediately post-treatment, and at 6-month follow-up. ResultsThe NMT group showed a greater improvement in the ISWT than the CRST group, both at post-treatment {mean 648 [standard deviation (SD) 197] vs 493 (SD 219), mean difference 155, 95% confidence interval (CI) -1 to 310} and at follow-up [732 (SD 183) vs 518 (SD 222), mean difference 214, 95% CI 61 to 367]. The secondary outcomes showed significant between-group differences in favour of the NMT group at 6-month follow-up, except for the 30CST. ConclusionsThese preliminary findings indicate that a cardiac rehabilitation programme based on NMT may improve functional capacity in terms of patient performance, cardiorespiratory fitness and muscle strength. Moreover, the improvements were maintained at medium-term follow-up. This could help improve the design of rehabilitation sessions, considering factors associated with performing everyday activities in patients affected by ACS.

Feasibility, Safety, and Effects of an Aerobic Training Program with Blood Flow Restriction on Functional Capacity, and Symptomatology in Women with Fibromyalgia: A Pilot Study.

Evidence suggests that aerobic training with blood flow restriction is beneficial for treating fibromyalgia. This study evaluated the feasibility, safety, and effects of an aerobic training program with blood flow restriction for women with fibromyalgia. Thirty-seven women with fibromyalgia were included, and thirteen with an average age of 59 ± 3, a BMI of 26 ± 3, and who were polymedicated started the intervention period. The intervention group performed aerobic exercise with blood flow restriction using occlusive bands placed in the upper part of the rectus femoris, with a total duration of 14 min of restriction divided into two periods of 7 min with a rest period of 3 min and a total session duration of 17 min. Pressure intensity was measured using the visual pain scale (VAS), scoring 7 out of 10 (n = 7). The non-intervention group performed aerobic exercise without restriction of blood flow for the same periods, rest periods, and total duration of the session (n = 6). The intervention included 2 weekly sessions with 72 h between aerobic walking for 9 weeks. Walking was measured individually using the rating of perceived exertion scale (RPE) with an intensity between 6 and 7 out of 10. Visual and verbal support for the VAS and RPE scale was always provided throughout the sessions supervised by the investigator. Functional capacity was assessed using tests (six-minute walk test, incremental shuttle walk test, knee extension and handgrip test by dynamometer, 30 s chair stand test, and timed up-and-go test). Symptomatology was assessed using questionnaires (Widespread Pain Index, Symptom Severity Score, Fibromyalgia Impact Questionnaire, and Multidimensional Fatigue Inventory), and blood samples were collected. There were no adverse effects, and only one participant in the intervention group withdrew. Between-group and intragroup differences showed that the intervention group obtained improvements in the functional tests; CST p = 0.005; 6MWT p = 0.011; Handgrip p = 0.002; TUGT p = 0.002 with reduced impact of the disease according to the questionnaires; FIQ Stiffness p = 0.027 compared with the nonintervention group. Biochemical results remained within normal ranges in both groups. Blood flow-restricted aerobic training may be feasible, safe, and more effective than unrestricted aerobic training as a physical exercise prescription tool to improve cardiorespiratory fitness, strength, balance, and stiffness in women with fibromyalgia.

Heart rate reactivity, recovery, and endurance of the incremental shuttle walk test in patients prone to heart failure.

Few randomized trials assessed the changes over time in the chronotropic heart rate (HR) reactivity (CHR), HR recovery (HRR) and exercise endurance (EE) in response to the incremental shuttle walk test (ISWT). We addressed this issue by analysing the open HOMAGE (Heart OMics in Aging) trial. In HOMAGE, 527 patients prone to heart failure were randomized to usual treatment with or without spironolactone (25-50mg/day). The current sub-study included 113 controls and 114 patients assigned spironolactone (~70% on beta-blockers), who all completed the ISWT at baseline and at Months 1 and 9. Within-group changes over time (follow-up minus baseline) and between-group differences at each time point (spironolactone minus control) were analysed by repeated measures ANOVA, unadjusted or adjusted for sex, age and body mass index, and additionally for baseline for testing 1 and 9month data. Irrespective of randomization, the resting HR and CHR did not change from baseline to follow-up, with the exception of a small decrease in the HR immediately post-exercise (-3.11b.p.m.) in controls at Month 9. In within-group analyses, HR decline over the 5min post-exercise followed a slightly lower course at the 1month visit in controls and at the 9month visits in both groups, but not at the 1month visit in the spironolactone group. Compared with baseline, EE increased by two to three shuttles at Months 1 and 9 in the spironolactone group but remained unchanged in the control group. In the between-group analyses, irrespective of adjustment, there were no HR differences at any time point from rest up to 5min post-exercise or in EE. Subgroup analyses by sex or categorized by the medians of age, left ventricular ejection fraction or glomerular filtration rate were confirmatory. Combining baseline and Months 1 and 9 data in both treatment groups, the resting HR, CHR and HRR at 1 and 5min averaged 61.5, 20.0, 9.07 and 13.8b.p.m. and EE 48.3 shuttles. Spironolactone on top of usual treatment compared with usual treatment alone did not change resting HR, CHR, HRR and EE in response to ISWT. Beta-blockade might have concealed the effects of spironolactone. The current findings demonstrate that the ISWT, already used in a wide variety of pathological conditions, is a practical instrument to measure symptom-limited exercise capacity in patients prone to developing heart failure because of coronary heart disease.

Longitudinal change in ultrasound-derived rectus femoris cross-sectional area in COPD.

Skeletal muscle dysfunction is common in COPD. Ultrasound-derived rectus femoris cross-sectional area (RFCSA) is a radiation free, non-invasive measure of muscle bulk that relates to quadriceps strength in people with COPD. However, there are limited longitudinal data for RFCSA, and it is not known whether longitudinal change in RFCSA reflects change in quadricep strength, exercise capacity, lower limb function or muscle mass. We aimed to quantify longitudinal change in ultrasound-derived RFCSA and assess its relationship with change in quadriceps maximal voluntary contraction (QMVC), incremental shuttle walk test (ISWT), five-repetition sit-to-stand (5STS) and fat-free mass (FFM) over 12 months in people with COPD. We measured ultrasound-derived RFCSA, QMVC, ISWT, 5STS and FFM (measured by bioelectric impedance analysis) at baseline and 12 months in 169 people with stable COPD. Change was correlated using Pearson's or Spearman's coefficients. Baseline characteristics: mean±sd age 70.4±9.4 years; FEV1 53.3±18.9% predicted. Over the course of 12 months mean RFCSA change was -33.7 mm2 (99% CI -62.6- -4.9 mm2; p=0.003) representing a mean±sd percentage change of -1.8±33.5%. There was a weak correlation between change in RFCSA and FFM (r=0.205, p=0.009), but not with change in QMVC, ISWT or 5STS. There is a statistically significant decrease in ultrasound-derived RFCSA over 12 months in people with stable COPD, but this decrease does not correlate with change in quadriceps strength, exercise capacity, FFM or lower limb function.

Smartphone Application to Prescribe Exercise and its Effects on Blood Pressure, Cardiopulmonary Endurance, and Adherence, in Primary Hypertensive Individuals – A Case Series

Abstract This case series assessed a smartphone application for prescribing exercise and its effect on blood pressure (BP), cardiopulmonary endurance, and adherence to the exercise program in individuals with primary hypertension. Five hypertensive individuals completed the home-based exercise program, which included aerobic exercise prescribed using the Google Fit app for 4 weeks. A significant decrease in both systolic and diastolic BP was observed, according to the results (146–124 and 96.4 83.2 mmHg, respectively). In the incremental shuttle walk test, cardiopulmonary endurance increased from 324 m to 510 m, and the mean adherence rate recorded was 95%. The findings suggest that smartphone application-based exercise prescription improves cardiovascular health in hypertensive individuals, positively affecting BP and cardiopulmonary endurance.

The useful lean tissue and appendicular skeletal muscle mass indices related to physical performance in patients undergoing hemodialysis

BACKGROUND: Low muscle quantity commonly seen in patients undergoing hemodialysis (HD) is the key contributor of declined physical performance and increases the risk of morbidity and mortality. However, how to normalize muscle mass for operational criteria in this population remains unknown. OBJECTIVE: To identify the clinically useful whole body lean tissue mass (LTM) and appendicular skeletal muscle mass (ASM) indices pertinent to physical performance in patients undertaking HD. METHODS: Whole body LTM in 38 and ASM in 22 patients undergoing HD were measured by body composition monitor (BCM) and dual-energy X-ray absorptiometry (DXA), respectively. Physical performance was assessed by handgrip strength, the incremental shuttle walk test, sit-to-stand tests, gait speed, Short Physical Performance Battery and Duke Activity Status Index. Besides crude LTM and ASM, the other muscle indices were utilized normalizing for height, height squared, weight, body mass index (BMI), fat mass and body fat%. RESULTS: Regardless of BCM or DXA being used, the relationships between different muscle mass indices and physical function were not consistent. While the most useful LTM index which was strongly associated with physical function involved adjustment for height, the strongest (and most useful) ASM index was normalization for BMI. CONCLUSION: The superiority of adjustment for BMI or height (height2) recommended by international sarcopenia consensus is also suitable for patients undergoing HD. Patients’ BMI or fat mass should be considered in estimating prevalence of sarcopenia and evaluating relationship between muscle mass and physical performance.

Exercise Capacity, Muscle Function, Functional Balance, and Cognitive Status in Patients with Post COVID-19 Syndrome Compared to Healthy Controls

Objective: There is limited data on the effect of post-COVID-19 syndrome on functional outcomes compared with healthy uninfected individuals. This study aimed to compare the muscle function, exercise capacity, and quality of life of patients with post-COVID-19 syndrome with that of healthy controls. Methods: Twenty patients with post-COVID-19 syndrome and twenty healthy controls participated in the study. The Incremental Shuttle Walk Test (ISWT) was used to measure exercise capacity, and the Timed Up and Go Test (TUG) was used to assess functional balance. Quadriceps muscle strength (QMS) and handgrip strength (HGS) were measured. Assessment tools included the McGill Pain Questionnaire (SF-MPQ) for pain, the Tampa Scale for Kinesiophobia (TSK) for movement fear, the Modified Medical Research Council Dyspnea Scale (mMRC) for dyspnea, the Fatigue Severity Scale (FSS) for fatigue perception, and the Cognitive Failures Questionnaire (CFQ) for cognitive status. Results: The mMRC dyspnea, TSK, FSS, SF-MPQ total scores, and pain severity of patients with post-COVID-19 syndrome were higher than those of healthy controls (p

In-Person Versus Remote 6-Minute Walk and Incremental Shuttle Walk Distances in Advanced Lung Disease.

Field-based walk tests conducted remotely may provide an alternative method to a facility-based assessment of exercise capacity for people with advanced lung disease. This prospective study evaluated the level of agreement in the distance walked between a 6-min walk test (6MWT) and an incremental shuttle walk test performed by using standard in-person procedures and test variations and settings. Adults with advanced lung disease underwent 4 study visits: (i) one in-person standard 6MWT (30-m corridor) and one in-person treadmill 6MWT, (ii) a remote 6MWT in a home setting (10-m corridor), (iii) 2 in-person standard incremental shuttle walk tests (10-m corridor), and (iv) a remote incremental shuttle walk test in a home setting (10-m corridor). A medical-grade oximeter measured heart rate and oxygen saturation before, during, and for 2 min after the tests. Twenty-eight participants were included (23 men [82%]; 64 (57-67) y old; 19 with interstitial lung disease [68%] and 9 with COPD [32%]; and 26 used supplemental oxygen (93%) [exertional [Formula: see text] of 0.46 ± 0.1]). There was no agreement between the tests. Greater walking distances were achieved with standard testing procedures: in-person 6MWT versus treadmill 6MWT (355 ± 68 vs 296 ± 97; P = .001; n = 28), in-person 6MWT versus remote 6MWT (349 ± 68 vs 293 ± 84; P = .001; n = 24), and in-person incremental shuttle walk test versus remote incremental shuttle walk test (216 ± 62 vs 195 ± 63; P = .03; n = 22). Differences in the distance walked may have resulted from different track lengths, widths, and walking surfaces. This should be considered in test interpretation if tests are repeated under different conditions.

Sex differences and determinants of anxiety symptoms in patients with COPD initiating pulmonary rehabilitation

BackgroundAnxiety is common in patients with chronic obstructive pulmonary disease (COPD). However, there is little evidence available regarding gender differences, and severity of dyspnea in relation to anxiety in patients with COPD. AimsWe examined gender differences and the association of dyspnea with anxiety in a cohort of patients with COPD prior to entering a pulmonary rehabilitation (PR) program. MethodWe analyzed data from a prospective cohort of COPD patients who attended PR from 2013 to 2019 in Lytham, Lancashire, UK. Patients were aged 40 years or older with a post-bronchodilation forced expiratory volume in 1 s (FEV1) less than 80 % of the predicted normal value and FEV1/FVC (forced vital capacity) ratio less than 0.7. We assessed quality of life (QoL) using the Saint George's Respiratory Questionnaire (SGRQ), anxiety using the Anxiety Inventory for Respiratory disease (AIR), dyspnea using the modified Medical Research Council (mMRC) scale, and exercise capacity using the Incremental Shuttle Walk Test (ISWT). ResultsNine hundred ninety-three patients with COPD (mean age = 71 years, FEV1/FVC = 58 % predicted, 51 % male) entered the PR program. Of these, 348 (35 %) had anxiety symptoms (AIR ≥8); of these 165 (47 %) were male and 183 (53 %) female, (χ2 = 3.33, p = 0.06). On logistic multivariate analysis, the following variables were independently associated with elevated anxiety: younger age (p < 0.001), female sex (p = 0.03), higher SGRQ-total score (p < 0.001) and high FEV1/FVC (p < 0.002). Dyspnea was associated with anxiety r = 0.25, p < 0.001. ConclusionOver a third of COPD patients had clinically relevant anxiety symptoms with a higher prevalence in women than men. Anxiety was associated with younger age, female gender, and impaired QoL. Early recognition and treatment of anxiety in patients with COPD is worthy of consideration for those attending PR, especially women.

What are the determinants of change in walking fitness in patients with a history of depression following cardiac rehabilitation?

This study aims to investigate the demographic, clinical, and service-level factors determining change in walking fitness in cardiac rehabilitation (CR) patients with a history of depression following the CR programme. The National Audit of Cardiac Rehabilitation clinical data were used to identify 1476 patients with a history of depression who had their pre- and post-incremental shuttle walk test (ISWT) recorded between 1 January 2016 and 31 January 2020. A multiple linear regression was conducted to examine the determinants of change in walking fitness (m) following CR. Mean age was 61 (SD 10.45), and mean ISWT distance at baseline and outcome was 352.06 m (SD 169.48) and 463.43 m (SD 197.65), respectively. Multivariate analysis revealed that change in walking distance reduced by 1.6 m for each year increase in age at baseline (P < 0.001). Females and unemployed patients had less improvement in walking fitness (23.1 and 21.5 m, respectively). Having a body mass index (BMI) > 30 was associated with lower improvement (24.2 m, P < 0.001), while physically active patients had 14.6 m higher change. Higher baseline ISWT quintiles were associated with less improvement, and increased waiting time to start CR was associated with reduced change in walking fitness following CR. Older age, female gender, unemployment, higher baseline BMI, longer waiting time, and lower physical activity were associated with reduced walking fitness improvement in patients with a history of depression. Targeted intervention and prompt access to CR can optimize outcomes.

Hemodynamic, ventilatory and gas exchange responses to exercise using a cycle ergometer and the incremental shuttle walk test in pregnant women

BackgroundCardiovascular disease, including hypertension, in pregnant women is a leading cause of morbidity and mortality globally. The development of reference intervals for cardiovascular responses using exercising testing to measure oxygen utilisation (V̇O2) with cardiopulmonary exercise testing (CPET), and distances walked using the incremental shuttle walk test (ISWT), may be promising methods to assess and stratify pregnant women regarding their risk of adverse pregnancy outcomes, to encourage exercise during pregnancy, and to improve exercise prescriptions during pregnancy. We aimed to determine the reference intervals for V̇O2 at rest, anaerobic threshold (AT) and submaximal exercise using CPET, and the reference interval for the ISWT, to develop a correlation equitation that predicts submaximal V̇O2 from the distance walked in the ISWT, and to explore the relationship between hemoglobin (Hb) and ferritin concentration and V̇O2 at AT in women in second trimester. MethodsAfter prospective IRB approval (HREC 15/23) and clinical trials registration (ANZCTR ACTRN12615000964516), and informed written consent, we conducted CPET and the ISWT according to international guidelines in a university associated tertiary referral obstetric and adult medicine hospital, in healthy pregnant women in second trimester (14 to 27 gestational weeks). Hemoglobin and ferritin concentrations were recorded from pathology results in the participants’ medical records at the time of exercise testing. Adverse events were recorded. Results90 participants undertook CPET, 28 of which also completed the ISWT. The mean ± SD age and body mass index (BMI) were 32 ± 3.2 years, and 25 ± 2.7 kg/m2. Median (IQR) gestation was 23 (22,24) weeks. One in four women were 24 weeks or greater gestation. The reference intervals for V̇O2 at rest, AT and submaximal exercise were 2.9 to 5.3, 8.1 to 20.7 and 14.1 to 30.5 mL/kg/min respectively. The reference interval for the ISWT was 218 to 1058 meters.metres. The correlation equation to predict submaximal V̇O2 from the distance walked in the ISWT was submaximal V̇O2 (mL/kg/min) = 0.012*distance walked in ISWT (m) + 14.7 (95% CI slope 0.005 to 0.070, Pearson r = 0.5426 95% CI 0.2126 to 0.7615, P=0.0029). Hemoglobin concentration was positively correlated with V̇O2 at AT (AT V̇O2 (mL/kg/min) = 0.08*Hb (g/L) + 4.9 (95% CI slope 0.0791 to 0.143, Pearson r = 0.2538 95% CI 0.049 to 0.438, P=0.016). There was no linear association between ferritin and submaximal V̇O2 (Pearson r = 0.431 P=0.697). There were no maternal or fetal complications. ConclusionsCPET and ISWT are safe and feasible in women in second trimester including those at or beyond 24 weeks gestation. We have established the reference interval for V̇O2 at rest, AT and submaximal exercise by CPET, the reference interval for the distance walked for the ISWT, and a correlation equation to predict submaximal V̇O2 for use in clinical practice and research. Hemoglobin rather than ferritin is likely correlated with exercise capacity in pregnancy suggesting vigilance to correct lower hemoglobin levels may positively impact maternal health. Clinical trials registryThe study was prospectively registered with the Australian and New Zealand Clinical Date of registration – 15/9/2015; Date of initial participant enrolment - 4/11/2015; Clinical trial identification number; ACTRN12615000964516; URL of the registration site - https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=369216 Prior presentation and published abstract“Oxygen utilization and anaerobic threshold measured using cardiopulmonary exercise testing in healthy pregnant women.” Obstetric Anaesthetists Association Meeting Edinburgh May 2023 Traer E, Ismail H, Leeton L, Bernhard R, Dennis AT. Oxygen utilisation and anaerobic threshold measured using cardiopulmonary exercise testing in healthy pregnant women. International Journal of Obstetric Anesthesia 2023;54: Supplement 1. Article 103659 O7 Traer E, Ismail H, Leeton L, Bernhard R, Dennis AT. “Oxygen utilization and anaerobic threshold measured using cardiopulmonary exercise testing in healthy pregnant women.” Poster presentation, iPOETTS abstract competition. Evidence Based Perioperative Medicine EPBOM World Congress of Perioperative Medicine, July 2023, London, U.K.

Effect of Adding a Program of Contextualized, Personalized, Remote Physical Activity Support to Conventional Cardiac Rehabilitation.

The objective of this investigation was to conduct a randomized controlled trial to evaluate whether KiActiv Heart alongside usual care (UC) promotes positive physical activity (PA) change versus UC alone. Patients in cardiac rehabilitation (n = 130) undertook an 8-wk intervention with follow-up at wk 8. Both groups attended UC and wore a PA monitor during the intervention. The intervention group accessed the digital service and received weekly one-to-one remote mentor sessions. The primary outcome was change in PA to achieve the Association of Certified Physiotherapists in Cardiac Rehabilitation (ACPICR) recommendations. The secondary outcome was cardiorespiratory fitness (CRF) change, measured using incremental shuttle walk test (ISWT). The probability of meeting ACPICR "Daily Activity" recommendation was statistically significantly greater in the intervention group versus control at wk 8 ( P < .05). No statistically significant differences between groups were found for mean ISWT change (intervention 89 ± 116 m; control 44 ± 124 m). Participation in KiActiv Heart alongside UC was associated with statistically significant improvement in probability of meeting ACPICR recommendation and non-statistically significant but potentially clinically important increases in CRF versus UC alone. This builds on existing evidence for effectiveness.

Efficacy and safety of a music-therapy facilitated pulmonary telerehabilitation program in COPD patients: the COPDMELODY study protocol.

Despite considerable evidence for the benefit in chronic obstructive pulmonary disease (COPD), the implementation of pulmonary rehabilitation (PR) is insufficient. However, music therapy may help address this gap due to its unique benefits. Therefore, we aimed to develop a music-therapy facilitated pulmonary telerehabilitation program based on rhythm-guided walking, singing, and objective telemonitoring. A supervised, parallel-group, single-blinded, randomized controlled clinical trial will be conducted, including 75 patients with COPD anticipated to be randomized in a 1:1:1 ratio into three groups. The intervention groups will receive a 12-week remotely monitored rehabilitation program, while the usual care group will not receive any rehabilitation interventions. Of the two intervention groups, the multi-module music therapy group will contain rhythm-guided walking and singing training, while the rhythm-guided walking group will only include music tempo-guided walking. The primary outcome is the distance of the incremental shuttle walking test. Secondary outcomes include respiratory muscle function, spirometry, lower extremity function, symptoms, quality of life, anxiety and depression levels, physical activity level, training adherence, and safety measurements. The results of this study can contribute to develop and evaluate a home-based music-facilitated rehabilitation program, which has the potential to act as a supplement and/or substitute (according to the needs) for traditional center-based PR in patients with stable COPD. Clinical trial registration: https://classic.clinicaltrials.gov/, NCT05832814.