9 research outputs found
Reliability and day-to-day variability of peak fat oxidation during treadmill ergometry
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Exploring needs, barriers to, and facilitators of rehabilitation exercise following revision hip replacement - a grounded theory study
Purpose
Evidence on rehabilitation after revision total hip replacement (THR) is inadequate and development of rehabilitation interventions is warranted. Even so, little is known about patientsâ experiences with revision THR rehabilitation. This study aimed to explore patientsâ rehabilitation exercise experiences after revision THR.
Materials and methods
Using constructivist grounded theory, we conducted semi-structured qualitative interviews with twelve patients with completed or almost completed rehabilitation exercise after revision THR. Data collection and analysis were a constant comparative process conducted in three phases; initial, focused, and theoretical.
Findings
From the data, we generated a substantial theory of the participantâs circumstances and ability to integrate rehabilitation exercise into their everyday life after revision THR. Four categories were constructed based on patientsâ experiences in different contexts: hesitance, fear avoidance, self-commitment, and fidelity.
Conclusions
This study highlighted that patientsâ expectations, past experiences, attitudes, trusts, and circumstances interact to influence engagement and adherence to rehabilitation exercise and described four categories relating to the integration of revision THR rehabilitation exercise into their everyday life. Clinicians should be aware of and account for these categories during rehabilitation exercise. Tailored individual rehabilitation exercise interventions and clinician approaches to optimize engagement and adherence are needed among patients with revision THR
The influence of D-ribose ingestion and fitness level on performance and recovery
Abstract Background Skeletal muscle adenosine triphosphate (ATP) levels are severely depleted during and following prolonged high intensity exercise. Recovery from these lower ATP levels can take days, which can affect performance on subsequent days of exercise. Untrained individuals often suffer the stress and consequences of acute, repeated bouts of exercise by not having the ability to perform or recovery sufficiently to exercise on subsequent days. Conversely, trained individuals may be able to recover more quickly due to their enhanced metabolic systems. D-Ribose (DR) has been shown to enhance the recovery in ATP; however, it is not known if recovery and performance can be benefitted with DR ingestion. Therefore, this study was designed to determine what influence DR might have on muscular performance, recovery, and metabolism during and following a multi-day exercise regimen. Methods The study was a double blind, crossover study in 26 healthy subjects compared 10Â g/day of DR to 10Â g/day of dextrose (DEX, control). All subjects completed 2Â days of loading with either DR or DEX, followed by 3 additional days of supplementation and during these 3Â days of supplementation, each subject underwent 60Â min of high intensity interval exercise in separate daily sessions, which involved cycling (8Â min of exercise at 60% and 2Â min at 80% VO2max), followed by a 2Â min power output (PO) test. Subjects were divided into two groups based on peak VO2 results, lower VO2 (LVO2) and higher peak VO2 (HVO2). Results Mean and peak PO increased significantly from day 1 to day 3 for the DR trial compared to DEX in the LVO2 group. Rate of perceived exertion (RPE) and creatine kinase (CK) were significantly lower for DR than DEX in the LVO2 group. No differences in PO, RPE, heart rate, CK, blood urea nitrogen, or glucose were found between either supplement for the HVO2 group. Conclusion DR supplementation in the lower VO2 max group resulted in maintenance in exercise performance, as well as lower levels of RPE and CK. Unlike no observed benefits with DEX supplementation