Cardiac functional adaptation to resistance and endurance exercise training: a randomized crossover study.

Few training studies have assessed the impact of different modes of exercise on changes in cardiac function. This study investigated changes in left ventricular (LV) systolic and diastolic function following endurance (END) and resistance (RES) training in healthy participants. Sixty-four individuals participated in a randomized crossover design trial, involving 12 wk of END and RES training, separated by a 12-wk washout. Echocardiograms assessed systolic function [ejection fraction (EF) and global longitudinal strain (GLS)], diastolic function [mitral valve early velocity (E), tissue Doppler velocity (e'), their ratio (E/e')], and left atrial volume indexed to body surface area (LA ESVi). LV mass (LVM) increased with both RES (Δ5.3 ± 11.9, P = 0.001) and END (Δ7.5 ± 13.9, P < 0.001). Once adjusted for lean body mass (LVMi), changes remained significant following END. E/e' improved following END (Δ-0.35 ± 0.98, P = 0.011) not RES (Δ0.35 ± 1.11, P =0.157; P = 0.001 between modes). LA ESVi increased with END (Δ2.0 ± 6.1, P = 0.019) but not RES (Δ1.7 ± 5.7, P = 0.113). EF and GLS were not impacted significantly by either mode of training. Adaptation in LVM and LA volumes, as well as diastolic function, was exercise mode specific. Twelve weeks of intensive END increased LVM, LA volumes, and increased diastolic function. Following RES, LVM increased, although this was attenuated after accounting for changes in lean body mass. There were no changes in systolic function following either mode of exercise training.NEW & NOTEWORTHY Different types of exercise training induce distinct physiological adaptations however few exercise training studies have assessed the impact of different modes of exercise on cardiac function. This study investigated changes in left ventricular systolic and diastolic function following exercise training. Participants completed both endurance and resistance training separated by a 12-wk washout period so each participant is their own control. We present adaptations in cardiac structure and diastolic function are exercise mode specific.

Early Daily Activity: Development and description of an occupation-based intervention for surgically repaired distal radius Fractures.

OBJECTIVE: To describe the theoretical development and structure of an occupation-based intervention for people with a surgically repaired distal radius fracture. INTERVENTION DEVELOPMENT AND RATIONALE: The Early Daily Activity (EDA) intervention uses the performance of strategically selected daily activities as the primary rehabilitative strategy. Occupation-based interventions are recommended for hand injury rehabilitation but are often poorly described and lack explicit theoretical underpinnings. The EDA-intervention was developed from exploratory research that informed the theory and structure. The theoretical principles are that daily activity performance is (i) safe within defined parameters (ii) appropriately self-determined (iii) produces high ranges and amounts of therapeutic movement, and (iv) builds psychosocial competencies. INTERVENTION DESCRIPTION: The EDA-intervention is designed to be commenced within 2 weeks of surgery. There are three key components. The first is activity-specific education to emphasise the safety, benefits, and therapeutic actions of activity performance. A set of parameters for defining safe activities is described to support education. The second component is patient-therapist collaboration to select a range of daily activities that provide a 'just-right' challenge. Collaboration occurs at regular intervals throughout the rehabilitation period to incrementally increase the challenge of activities. The third component is performance of activities at-home targeted at improving range of movement and function. NEXT STEPS: The EDA-intervention can be used by hand therapists, but it has not yet undergone effectiveness evaluation. A planned study will explore clinician readiness to adopt the EDA-intervention, inform iterative changes to the protocol and the design of feasibility and effectiveness studies.

An evaluation of wrist and forearm movement during purposeful activities and range of movement exercises after surgical repair of a distal radius fracture: A randomized crossover study.

PURPOSE: Following surgical repair of distal radius fractures, range of movement (ROM) exercises are the primary approach for restoring movement during early rehabilitation. Specified purposeful activities can also be used, but the movement produced by activities is not well-understood. The study aimed to evaluate and compare movement during purposeful activity and ROM exercises METHODS: Thirty-five adults with a surgically repaired distal radius facture undertook two 10-minutes interventions: purposeful activity (PA) and active ROM exercises (AE), separated by a 60 minute washout, in random order. Data collection occurred during a single session on the same day. Electrogoniometry was used to measure time-accumulated position (TAP), a global metric of movement range and amount, maximum active end range, movement repetitions, excursions >75% of available ROM, and active time. Data were analyzed using linear mixed and generalized linear mixed regression models. RESULTS: Purposeful activities selected were predominantly household or food preparation. TAP was significantly higher during AE than PA: -1878 [-2388, -1367], p ≤.001, for wrist extension/flexion. PA produced significantly greater movement repetitions for wrist extension/flexion and deviation, excursions beyond 75% of available ROM, and active time, than AE. During PA the wrist was extending/flexing a mean of 97% [92, 101], of the time, compared with 43% [40, 47], during AE. There were no significant differences in maximum end range for wrist extension between PA, 33.7° [29.8, 37.5] and AE, 34.5° [30.7, 38.4], or for ulnar deviation. CONCLUSIONS: ROM exercises produced higher volumes of sustained joint position than purposeful activity but activities, selected for importance and challenge, produced significantly higher volumes of continuous, repetitious motion in equivalent ranges of movement as exercise repetitions. The study challenges therapists to consider the rehabilitative potential of movement produced by activity for restoring movement and function in the early postoperative weeks.

University Staff Insights on Interprofessional Education and Student-Led Clinic Opportunities at an Australian University.

Purpose: Organizational and university staff buy-in and advocacy are critical considerations in planning successful interprofessional education (IPE) initiatives in healthcare, such as interprofessional student-led clinics (SLCs). This study was designed with the purpose of gaining deeper insight into current views and perspectives of academic and professional staff at an Australian university, as a precursor to planning IPE and SLC activities. Methods: All academic and professional staff from within the School of Health Sciences were invited to participate in the study. In-depth-qualitative interviews were conducted with 16 staff to explore academic and professional staff perspectives on IPE and SLCs. Reflexive thematic analysis was used to analyse the data. Results: Findings are grouped within five themes that incorporate broad perspectives on the tensions and possibilities of IPE and establishment of SLCs: Academic and professional staff commitment; Better/smarter IPE; Student-led clinic potential; Vision and innovation; and Strategy and resourcing. The themes reflect the high value placed on IPE by academic and professional staff and incorporate innovative ideas on how to prepare students for a rapidly changing and evolving healthcare environment. A reticence towards standard models of university based SLCs was expressed. Conclusion: Academic and professional staff insights suggest university leaders need to develop a greater strategic focus on improving IPE. Effective engagement with staff is required to support IPE planning and implementation. If considering implementation of SLCs, contemporary fit-for-purpose models should be explored such as partnerships with primary healthcare providers, community wellness facilities, and hospital clinics rather than traditional university-based clinics.

The effect of night extension orthoses following surgical release of Dupuytren contracture: a single-center, randomized, controlled trial.

PURPOSE: To clarify the efficacy and detrimental effects of orthoses used to maintain finger extension following surgical release of Dupuytren contracture. METHODS: We conducted a single-center, randomized, controlled trial to investigate the effect of night extension orthoses on finger range of motion and hand function for 3 months following surgical release of Dupuytren contracture. We also wanted to determine how well finger extension was maintained in the total sample. We randomized 56 patients to receive a night extension orthosis plus hand therapy (n = 26) or hand therapy alone (n = 30). The primary outcome was total active extension of the operated fingers (°). Secondary outcomes were total active flexion of the operated fingers (°), active distal palmar crease (cm), grip strength (kg), and self-reported hand function using the Disabilities of the Arm, Shoulder, and Hand questionnaire (0-100 scale). RESULTS: There were no statistically significant differences between the no-orthosis and orthosis groups for total active extension or for any of the secondary outcomes. Between the first postoperative measure and 3 months after surgery, 62% of little fingers had maintained or improved total active extension. CONCLUSIONS: The use of a night extension orthosis in combination with standard hand therapy has no greater effect on maintaining finger extension than hand therapy alone in the 3 months following surgical release of Dupuytren contracture. Our results indicate that the practice of providing every patient with a night extension orthosis following surgical release of Dupuytren contracture may not be justified except for cases in which extension loss occurs after surgery. Our results also challenge clinicians to research ways of maintaining finger extension in a greater number of patients.

"The more I do, the more I can do": perspectives on how performing daily activities and occupations influences recovery after surgical repair of a distal radius fracture.

PURPOSE: The study aimed to explore perceptions and experiences about how engaging in daily activities and occupations influenced recovery in the first eight weeks after surgical treatment of a distal radius fracture. METHODS: Twenty-one adults completed an online activity and exercise log then participated in a semi-structured interview between weeks 6 and 8 postoperatively. Interviews were transcribed and analysed using reflexive thematic analysis. RESULTS: Daily activities and occupations were highly influential in facilitating recovery of movement and function of the operated limb. Five themes provided an understanding of how occupation operated to promote recovery. Occupation was (i) a primary driver of the rehabilitative process, providing an impetus for recovery, (ii) offered ready-to-hand challenges for opportunistic, automatic movement, (iii) invited intentional use of the affected wrist, (iv) habituated the wrist to movement through repetition and confidence-building, and (iv) drew on psychosocial resources to enable reengagement with life activities and roles. CONCLUSIONS: Incorporating the performance of graded, modified activities during the early weeks of rehabilitation creates opportunities for wrist movement, enhances wellbeing, and assists in the habituation of wrist movement. Activities and occupations can be used as a therapeutic strategy to promote recovery from surgical treatment of a distal radius fracture.Implications for rehabilitationRehabilitation after surgical repair of distal radius fractures has traditionally focused on exercise routines.Daily activities and occupations can also be used to promote wrist movement and function during the early weeks of rehabilitation.Occupation is a naturally occurring source of wrist movement, motivation, and wellbeing that can be harnessed for therapeutic advantage after surgical repair of distal radius fractures.Therapists can collaborate with patients to select and modify daily activities and occupations to incorporate into early postoperative therapy programmes.

Influence of Purposeful Activities on Upper Extremity Motor Performance: A Systematic Review.

Following upper extremity injury, exercise-approaches are commonly used to address motor impairments. Occupation-based approaches are also used but less widely promoted and their mechanisms of action not well-understood. Movement performed during purposeful activities and occupations may yield better motor performance than during nonpurposeful tasks. This review investigated the influence of engagement in purposeful activities and occupations on upper extremity motor performance in healthy and musculoskeletal populations. Databases were searched for studies in healthy or upper extremity musculoskeletal-injured adults that compared motor performance during purposeful activities against nonpurposeful movements. Twenty-one studies of moderate quality, conducted predominantly in healthy populations, were included. Upper extremity movement quantity and quality were enhanced when performed during purposeful conditions. Purposeful activities have potential to be used following injury to enhance movement and address motor impairments to a greater extent than is currently promoted. Research in musculoskeletal populations is required.

Effect of aerobic and resistance exercise on central hemodynamic responses in severe chronic heart failure.

Exercise is now considered an important component of management in chronic heart failure (CHF), but little is known about central hemodynamic changes that occur during different exercise modalities in these patients. Seventeen patients (ejection fraction 25 +/- 2%) undertook brachial artery and right heart catheterization and oxygen consumption assessment at rest, during submaximal and peak cycling (Cyc), and during submaximal upper and lower limb resistance exercise. Cardiac output (CO) increased relative to baseline during peak Cyc (P < 0.05) but did not change during submaximal Cyc or upper or lower limb exercise. Heart rate (HR) was lowest during upper limb exercise and progressively increased during lower limb exercise, submaximal Cyc, and peak Cyc, with significant differences between each of these (P < 0.01). Conversely, stroke volume (SV) decreased during submaximal Cyc and lower limb exercise and was lower during peak and submaximal Cyc and lower limb exercise than during upper limb exercise (P < 0.05). CHF patients are dependent on increases in HR to increase CO during exercise when SV may decline. Resistance exercise, performed at appropriate intensity, induces a similar hemodynamic burden to aerobic exercise in patients with CHF.