Hours Of Rest Research Articles

The Impact of Medical Illness Repatriation to Filipino Seafarers

Medical illness among Filipino seafarers has resulted to repatriation cases. Thus, this study narratively captured the experiences of the eight (8) medically repatriated participants to understand the impact of repatriation on them. Using a validated interview guide, this study determined the common categories of the participants’ illness, the factors that led to their repatriation, the impact on their life, career, and finances, as well as their coping mechanisms. It was revealed that gastrointestinal, cardiovascular, genitourinary, and musculoskeletal disorders have been the most common illness of the participants wherein personal characteristics, management style, and physical environment are found to be the perceived causes of their health condition. Moreover, findings show that their repatriation due to medical illness has significant impact to their lives, careers, and finances. However, their resilience and ability to adapt helped them overcome these problems, through diversification of income sources, skill enhancement and career transition, as well as prioritizing their physical health and well-being. Out of the eight participants, seven were declared fit to work after treatment and were given a chance to be re-hired again by their last manning agency. Highly focused recommendations were also provided for the seafarers, the Philippine government, and manning agencies. Among them are healthy living choices, strict implementation of ILO MLC 2006 regulation on hours of work and rest, free HMO provisions from manning agencies, as well as resilience and financial literacy training.

Intranasal administration of GRP78 protein (HSPA5) counteracts the neurodegeneration in the locus coeruleus in a model of chronic sleep restriction in rats

Chronic sleep restriction (sleep less than 6 hours per day) due to the workload and a decrease in sleep quality is an endemic disease in modern society. Chronic sleep deprivation causes serious neuropsychiatric disorders associated with irreversible neurodegenerative changes in the brain. The search for pharmacological agents that can reduce the risk of neurodegeneration as a result of chronic sleep loss is an urgent task issue for biomedicine. Intranasal administration of glucose-regulated 78 kDa heat shock protein (GRP78) has a neuroprotective effect in a rat model of Parkinson´s disease. The neuroprotective potential of intranasally administered GRP78 in chronic sleep deprivation has not been previously studied. The aim of the study is to find out whether preventive intranasal administration of GRP78 is able to weaken and/or stop the process of neurodegeneration in the locus coeruleus in the model of chronic sleep restriction (SR) in rats. The study was conducted on 6 months old male Wistar rats. For sleep deprivation, a validated method of a swinging platform was used in the mode: 3 hours of sleep deprivation and 1 hour of rest continuously for 5 days. Recombinant human protein GRP78 was administered intranasally two days before the start of SR and during 5 days of SR. Cellular and molecular changes in the locus coeruleus during SR and during the administration of GRP78 were studied using immunohistochemistry and Western blotting. It was shown that chronic SR leads to the degeneration of 30% of noradrenergic neurons in the locus coeruleus, that was associated with an increase in the levels of activated caspases-3 and 9. This indicates the development of apoptosis along the mitochondrial pathway. No signs of reactive microgliosis were found in the model of chronic SR in rats. We have demonstrated that intranasally administered GRP78 penetrates and accumulates in the neurons of the locus coeruleus, GRP78 counteracts the death of neurons along the path of apoptosis. The data obtained allows to consider GRP78 as a potential neuroprotective agent for the prevention of pathological consequences of chronic sleep deprivation.

The Usefulness of Lordosis Load Test and Urinary Biochemistry in the Diagnosis of Orthostatic Proteinuria.

Introduction Renal disease is commonly suspected in patients with proteinuria. Renal biopsy might be considered based on the patient's clinical history and the results of diagnostic tests. However, as orthostatic proteinuria is benign and requires no treatment, it is important to obtain a diagnosis without renal biopsy whenever possible. Therefore, up to now, for the diagnosis of orthostatic proteinuria, in addition to resting urinalysis evaluation (disappearance of proteinuria), we have performed the lordosis load test and urine biochemistry of the samples showing peak proteinuria in a lordosis load test. Method We retrospectively enrolled all patients who visited the pediatric department and underwent the lordosis load test at Kanazawa Medical Center between 2011 and 2020. In the present study, samples with the highest concentrations of protein after the lordosis load test were subjected to general urinary biochemistry and urinary sediment analysis. Patients were followed up with the lordosis load test for several years. Results Enrolled in the study were 68 patients with OP. The mean age at the time of diagnosis was 11.5 years (range, six to 16 years). General urinary tests, urinary sediment, and urinary biochemistry including N-acetyl-beta-D-glucosaminidase (NAG), alpha1-microglobulin(α1MG), and beta 2-microglobulin (β2MG) were normal in all patients with orthostatic proteinuria except one case who was a premature baby. Conclusion If proteinuria disappears after two hours of rest, and urinary biochemistry of the samples showing peak proteinuria in the lordosis load test is normal, orthostatic proteinuria can be diagnosed more accurately.

Missing School Days Following Sport-Related Concussion in High School Athletes

Sport-related concussions (SRC) can significantly impact students' attendance and academic performance, highlighting the importance of gradual return-to-learn protocols for recovery. Understanding the association between missed school days and recovery, especially across genders, is vital for effective concussion management in high school athletes. To describe missed school days in high school athletes with SRC and to determine associations between missed school days and authorized clearance to return to competition; secondarily, to determine whether school days missed differed by gender. Cohort study among student athletes participating in athletics sponsored by the Michigan High School Athletic Association (MHSAA) during academic years 2015 to 2023. SRC was a participant eligibility criterion and was defined as a head injury during participation in a MHSAA-sanctioned event. Data were analyzed from August 2015 to June 2023. Primary exposure was missed school days; additional exposures included gender, year of season, concussion history, event type, sport level, contact level, and athletic trainer involvement. The primary outcome was time to full unrestricted clearance following SRC. The analysis included a total of 20 934 individuals with SRC (13 869 boys [66.25%]). Gender (χ23 = 167.40; P < .001), season (χ221 = 57.41; P < .001), event type (χ23 = 99.29; P < .001), sport level (χ29 = 68.15; P < .001), contact level (χ26 = 56.73; P < .001), and initial evaluation (χ23 = 147.13; P < .001) were independently associated with missed school days. Athletes took a median (IQR) of 11 (7-16) days to return to full unrestricted clearance. Relative to no missed school days, there was a significant mean increase of 57% (incidence rate ratio, 1.57; 95% CI, 1.52-1.62) in time to full unrestricted clearance for 3 or more missed school days. The estimated mean days to return to sport were 12.15 (95% CI, 12.00-12.30) for 0 missed school days, 12.68 (95% CI, 12.39-12.96) for 1 missed school day, 15.47 (95% CI, 15.06-15.87) for 2 missed school days, and 19.08 (95% CI, 18.55-19.62) for 3 or more missed school days. This cohort study found that high school athletes typically missed 2 or fewer school days after SRC, suggesting that concussion management teams adhered to current recommendations of 24 to 48 hours of initial rest. The dose association, with more missed school days associated with slower return to play, suggests athletes' missing more school days (eg, ≥3) may be associated with severity of concussion and warrant additional support to return to school and/or sport.

Effects of a sedentary behaviour intervention in emergency dispatch centre phone operators: a study protocol for the SECODIS randomised controlled cross-over trial

IntroductionSedentary behaviour is a public health problem. We mainly have sedentary behaviour at work, transforming them into occupational risk. To our knowledge, there is no intervention study on the reduction...

REM and NREM Sleep Parasomnia in Anti-NMDA Receptor Encephalitis.

Encephalitis with anti-N-methyl-d-aspartate receptor antibodies (anti-NMDARe) is a rare disorder characterized by cognitive impairment, psychosis, seizures, and abnormal movements. Abnormal behaviors during REM sleep have not been described in anti-NMDARe. Patients were monitored by video-polysomnography on a first night followed by multiple sleep latency tests and 18 hours of bed rest. Two patients with anti-NMDARe developed during the acute and postacute phase parasomnias including REM sleep behavior disorder and continuous finalistic quiet gesturing during a mixed N2/R sleep. The parasomnia disorder was improved by gabapentin and clonazepam. Video-polysomnography avoids misdiagnosing these parasomnia behaviors for seizure or movement disorders and allows adequate treatment.

Efficacy of Dexamethasone in Reducing Pain and Inflammation and Accelerating Total Hip Arthroplasty Postoperative Recovery: A Randomized Controlled Trial

PurposeTo evaluate the efficacy of dexamethasone in reducing pain and accelerating recovery after total hip arthroplasty (THA). DesignA prospective randomized controlled trial. MethodsA total of 98 patients who underwent THA received either low-dose (10 mg) dexamethasone (dexa group) or isotonic saline (placebo group). C-reactive protein and interleukin-6 levels were recorded at 24, 48, and 72 hours after surgery. Pain visual analog scale (VAS) score at rest and walking, the incidence of postoperative nausea and vomiting (PONV), nausea VAS score, postoperative identity-consequence fatigue scale rating, antiemetic use, postoperative length of stay (PLOS), and complications were also recorded and compared. FindingsInflammatory marker (C-reactive protein and interleukin-6) levels at 24, 48, and 72 hours postoperatively in the dexa group were lower than that in the placebo group (P < .05). After 24 hours of rest, the dynamic pain VAS scores in the dexa group were lower than those in the placebo group (P < .05). The incidence of PONV, nausea VAS score, and identity-consequence fatigue scale score in the dexa group were lower than those in the placebo group (P < .05), and the dosages of analgesics and antiemetics were also lower (P < .05). In addition, PLOS in the dexa group was shorter than that in the placebo group (P < .05). No significant difference in perioperative complications between the two groups was observed (P > .05). ConclusionsLow-dose dexamethasone in the THA perioperative period can effectively reduce inflammatory marker levels, pain, nausea, postoperative fatigue, opioid analgesic use, and shorten PLOS without increasing complications.

A study of appropriateness work and rest hours of construction industry employees

A study of appropriateness work and rest hours of construction industry employees

Safety and Patient Experience With Early Mobilization After Transcatheter Aortic Valve Implantation: A Randomized Trial.

Immobilization after transcatheter aortic valve replacement (TAVR) is the standard treatment for preventing access-related complications. However, the length of bed rest varies, and possible complications and patient experience remain unexplored. In this pilot study, our aim was to investigate safety and efficacy after bed rest after TAVR. This single-center randomized trial included 298 patients. Patients were randomized to standard 6 hours (n = 149) or 3 hours (n = 149) of bed rest after TAVR. The primary safety endpoint was a composite of access-related bleeding (Bleeding Academic Research Consortium type ≥ 2), hematoma (>5 cm), pseudoaneurysm, and vascular complications requiring intervention. The primary efficacy endpoint was patient-reported back pain, rated ≥6 on a numeric rating scale 24 hours post procedure. The secondary endpoints were the individual components of the primary safety endpoint, patient-reported pain, urination problems, and comfort. The primary safety endpoint occurred in 14 (9.4%) and 12 (8.1%) patients in the 6-hour and 3-hour immobilization groups, respectively (risk ratio, 0.86 [95% confidence interval, 0.41-1.79]; P = .68). There were no significant differences in individual bleeding or vascular complication endpoints. Patients with 3 hours of bed rest reported less back pain (P < .001), fewer urination problems (P < .001), and better comfort (P < .001) than patients with 6 hours of bed rest. Mobilization as early as 3 hours after TAVR was shown to be safe, not resulting in a higher rate of bleeding or vascular complications as compared with 6 hours of bed rest. However, there was a difference in patient-reported back pain, urination problems, and comfort, favoring early mobilization.

Quick returns, sleep, sleepiness and stress - An intra-individual field study on objective sleep and diary data.

Quick returns (<11 hours of rest between shifts) have been associated with shortened sleep length and increased sleepiness, but previous efforts have failed to find effects on sleep quality or stress. A shortcoming of most previous research has been the reliance on subjective measures of sleep. The aim of this study was to combine diary and actigraphy data to investigate intra-individual differences in sleep length, sleep quality, sleepiness, and stress during quick returns compared to day-day transitions. Of 225 nurses and assistant nurses who wore actigraphy wristbands and kept a diary of work and sleep for seven days, a subsample of 90 individuals with one observation of both a quick return and a control condition (day-day transition) was extracted. Sleep quality was assessed with actigraphy data on sleep fragmentation and subjective ratings of perceived sleep quality. Stress and sleepiness levels were rated every third hour throughout the day. Shifts were identified from self-reported working hours. Data was analyzed in multilevel models. Quick returns were associated with 1 hour shorter sleep length [95% confidence interval (CI) -1.23- -0.81], reduced subjective sleep quality (-0.49, 95% CI -0.69- -0.31), increased anxiety at bedtime (-0.38, 95% CI -0.69- -0.08) and increased worktime sleepiness (0.45, 95%CI 0.22- 0.71), compared to day-day transitions. Sleep fragmentation and stress ratings did not differ between conditions. The findings of impaired sleep and increased sleepiness highlight the need for caution when scheduling shift combinations with quick returns.

An examination of the usefulness of a quantitative appraisal method in nursing human resource management in primary hospital operating rooms: An example of integrated collaborative scheduling.

In recent years, China medical and health services have made great development. However, the management of nursing human resources in operating room of primary hospitals still faces a series of challenges. In the nursing work of operating room, high-quality nursing human resource management is important for improving the efficiency of operating room and ensuring the safety of patients. From January 2022 to December 2022, comprehensive collaborative scheduling and quantitative scoring evaluation methods were carried out in our hospital, and relevant data were collected. The flexible scheduling combined quantitative scoring performance appraisal system and the traditional scheduling plus average distribution performance appraisal system were statistically analyzed and compared in terms of annual surgical cases, annual overtime hours, annual back work hours, annual compensatory rest hours, and average daily working hours. This study was based on 30 medical staff (27 females and 3 males) in the operating room of a primary hospital. The annual operation volume increased by 387 cases compared with before, and the attitudes of patients to the service attitude and preoperative waiting time were significantly improved, reaching more than 95%. In addition, in the survey of surgeons, it was found that their satisfaction with preoperative preparation and operation time was significantly higher than that of the traditional scheduling method, and reached more than 95%. In the survey of nursing staff, it was found that the satisfaction with the traditional scheduling method was about 80%, and the satisfaction directly reached 100% after the comprehensive collaborative scheduling system. Based on the above survey, the satisfaction of nurses, doctors and patients with the new comprehensive collaborative scheduling system has improved compared with before. After the implementation of the comprehensive collaborative scheduling system, the annual surgical volume has increased significantly, and the average daily working hours of nursing staff have decreased. Comprehensive collaborative scheduling is an effective method of nursing human resource management in operating room, which can effectively improve the work efficiency of nurses and the satisfaction of patients, doctors and nurses. In practice, this method needs to be continuously explored and refined to adapt to different application scenarios and requirements.

Hydration status and biochemical profile of Quarter Horses in vaquejada training

The hydration status and biochemical profile were assessed and compared in two Quarter Horses groups (pull and helper), at three times (T) of a vaquejada training: at rest, before exercise (T0); after three sprints or races (T1); after an hour of rest from sprints (T2). There was no significant difference between the evaluation times in each group nor between the groups in the times evaluated for the parameters: capillary refill time, skin turgor, color and humidity of the mucosa, total plasma proteins, creatinine, urea and osmolarity, creatine kinase, aspartate aminotransferase, total calcium, phosphorus, and total magnesium. There was increase in the hematocrit and plasma glucose in both groups at T1, but without differences among the groups. The plasm lactate increased in T1. Only for plasma lactate there were changes between the groups, being higher in the pull at T1. It was concluded that, in response to the imposed exercise, the pull and helper groups showed similar hydration status with only slight dehydration, and maintained their biochemical rates preserved, except lactatemia which increased in both, but higher in the pull, suggesting that this group performs more intense anerobic metabolism in the vaquejada.

Enhancing aqueous Zn-Mn battery performance using Na+ ion conducting ceramic membrane

The low cell voltage and capacity of conventional Zn-MnO2 batteries often result in limited energy density. In this study, we assembled a Zn-MnO2 battery based on the acid-alkaline electrolyte decoupled concept and reversible MnO2/Mn2+ deposition/dissolution chemistry to increase the cell voltage and capacity. We used a Na+ ion conducting NASICON ceramic membrane in the battery to decouple the acid and alkaline electrolytes effectively. The assembled Zn-MnO2 battery demonstrated a cell voltage of 2.43 V and a coulombic efficiency (CE) of 90% at a current density of 0.2 mA/cm2. It also exhibited excellent rechargeability with continuous charge and discharge cycles. After 100 cycles, the battery exhibits a capacity of 0.36 mAh with a maximum CE of 93.42%. A study on the battery’s self-discharge performance showed that a maximum of 71% capacity could be recovered from the charged battery after 24 hours of rest. Finally, we fabricated a pouch-type acid-alkaline electrolyte decoupled Zn-MnO2 battery and examined its feasibility.

Recovery in elite youth basketball players: The responsiveness of the psychophysiological measurements and the role of testosterone concentration

ABSTRACT This study investigated the recovery responses to the Total Quality Recovery (TQR), Well-Being questionnaire (WBQ), and Heart Rate (HR) responses to Submaximal Running Test (SRT), and the influence of salivary testosterone concentration (TEST) on these responses in 25 elite youth (U15) male basketball players. TQR, WBQ, and HR measurements were assessed after 48 hours of rest (T1), 24 hours after the 1st day of training (T2) and 24 hours after the 2nd day of training (T3). Salivary sampling was conducted at T1 and T3. A significant decrease was observed for TQR (F = 4.06; p = 0.01) and for WBQ (F = 5.37; p = 0.008) from T1 to T3. No difference among the three-time points was observed for HR and HR Recovery, and the TEST concentration did not influence the results. These results show that TQR and WBQ are sensitive to acute transient alterations in training loads (TL) and may be utilized to monitor recovery in elite youth basketball players. The HR related measurements presented limited responsiveness, and the TEST seems not to influence the recovery of these players who are competing at highest performance level.

Optimum Working Hours for College of Physicians and Surgeons Pakistan Fellowship Residents of General Medicine and General Surgery Disciplines.

To determine the optimum working hours per week for CPSP trainees of Fellowship Programmes in the disciplines of General Surgery and General Medicine. Mixed-methods, explanatory study. Place and Duration of the Study: Department of General Medicine and Department of General Surgery, Abbasi Shaheed Hospital, Karachi, from February to August 2023. The total number of subjects included were 33 residents, 7 supervisors (4 from General Medicine and 3 from Geneneral Surgery), and 3 hospital managers (from private sector), constituting a representative sample. Postgraduate trainees (PGTs) of third-and fourth-year FCPS training programme who showed willingness to participate were included as were all supervisors and hospital managers involved in the training programme. FCPS residents, who were not willing, on leave, and on rotation to other departments were excluded, as were PGTs enrolled in university and other programmes. For quantitative analysis, survey forms were distributed to the selected participants. For qualitative analysis, one-to-one interviews were conducted in-person and through video-link. Data collection procedure included distribution by hand and via email. SPSS was used for the data analysis. All residents recorded that duty stress, fatigue, and burnout resulted in poor quality of family and social life. All the stakeholders were convinced that acquisition of skills, learning outcomes, and patient safety with optimum care is compromised. The duration of emergency calls varied from 30 to 36 hours. There were 19 out of 33 residents (57.5%) who recommended 24 hours of rest after each emergency call. All the supervisors recommended six to eight daily duty hours and 66 to 90 weekly working hours. Four out of seven supervisors (57.1%) suggested emergency duty of 30 hours with post-call rest of 24 hours at every 3rd day. There is a need for a comprehensive approach that caters to the patient care as well as learning outcomes and residents' well-being when devising the duty schedules. Training hours, Fellowship programme, Fatigue, Learning outcomes.

‘Living, that’s what we do’: an ethnographic account of time and leisure in the British asylum system

ABSTRACT For many, wage labour dictates the rhythm of everyday life, delineating hours of rest, recreation, and labour. For people seeking asylum – most of whom have no right to work and subsist on support payments below the level of destitution – such divisions are less clear. This makes grappling with the concepts of time and leisure in the asylum system important. People seeking asylum often wait years for a decision on their claim and, in the UK, the application process often involves multiple rounds of application and re-application over several years. This has profound implications for leisure. In this article, I explore the leisure practices of people seeking asylum in the city of Sheffield in the north of England. By looking at the temporal power exercised by the state over people seeking asylum, I consider access to parks and greenspaces; parties, drinking and smoking. I find that greater attention needs to be paid to informal use of greenspaces; leisure practices beyond targeted interventions to promote integration or cohesion; and discourses around legitimate leisure in the asylum system. I conclude by calling for more sustained engagement with what the temporal demands of the asylum system mean for how we understand leisure.

Validity and reliability of velocity and power measures provided by the Vitruve linear position transducer.

This study aimed to determine the validity and between-day reliability of the mean velocity (MV), peak velocity (PV), mean power (MP), and peak power (PP) provided by the Vitruve linear position transducer at different submaximal loads in the free-weight and Smith machine back squat using GymAware as a reference point. Fourteen male sports science students (free-weight back squat one-repetition maximum [1RM]: 132.5 ± 28.5 kg, Smith machine back squat 1RM: 163.9 ± 30.4 kg) performed six experimental sessions, twice per week with 72 hours of rest. The first two included the assessment of the 1RM of both exercises. In the four remaining, both linear position transducers were simultaneously used to record MV, PV, MP, PP of each repetition during an incremental load test (i.e., 20, 40, 60, 80, 90% 1RM) with three minutes of rest between sets. Vitruve displayed both fixed and proportional bias for certain relative loads across all variables. Vitruve did not meet the validity criteria for all (MV, PP) or at least two (MP, PV) relative loads (Coefficient of variation [CV] > 10%; Pearson correlation < 0.70; Effect size > 0.60). MV, PV, MP, and PP recorded by Vitruve displayed acceptable reliability (CV < 10%) with superior reliability observed during a Smith Machine compared to free-weight back squat, and for velocity compared to power variables. Considering GymAware as a reference point, Vitruve was not valid for measuring velocity and power outcomes. Acceptable validity was observed only for PV in the Smith machine back squat, while the other variables-regardless of relative loads and exercise modes-were mostly inaccurate. All variables demonstrated acceptable reliability, with greater reliability noted in the Smith machine compared to the free-weight back squat exercise mode.

Labor regulation of medical professionals in the universal health care system through the lens of health economics

Current events in the healthcare sector are aimed at amending the Labour Code, specifically section 93. Employees face more difficult working conditions as a result of this issue, despite the fact that this amendment is intended to protect them. The purpose of this thesis was to determine what information exists in academic, official, governmental, and discursive environments, as well as what relevant data can be extracted from the available sources to draw constructive conclusions. The entire subject is treated as a theoretical concept that analyses the situation from the standpoint of the Austrian school of economics and health economics and provides a useful perspective on the issue of health system regulation and reform.The findings reflect an opinionated reality that elicited a media response from the general public and medical personnel. There was an interim agreement on salary increases for doctors and non-medical staff in the health sector in this case. Although the Chamber of Deputies' action appears to be relatively settled, it is still practically unresolved whether doctors will be allowed to work up to twice as many hours of overtime, and although each 12-hour shift should be followed by eight hours of uninterrupted rest, we should probably brace ourselves for further possible Labor Code circumvention. Furthermore, it was noted that this and similar topics are rarely discussed in academic and scientific settings, and that there is a lack of a systemic perspective and evidence.

Analysis of the Application of the Rest Hour Maritime Labor Convention 2006 on MV. Pan Energen Crews to Improve Working Conditions With Analytical Hierarchy Process (AHP) Method

The contribution made by the crew is very important for the welfare of the company and the performance on board. But their well-being has not been paid enough attention in the maritime world. Heavy workloads and working hours and lack of implementation of rest hours trigger human error and are prone to fatigue. The implementation of the Maritime Labor Convention 2006 has contributed significantly to the improvement of the working conditions of the crew. The purpose of this study is to determine the right criteria and strategic solutions in helping to improve the application of rest hours to crew members. Criteria and strategy solutions were obtained through the Analytical Hierarchy Process (AHP) and Expert Choice methods are used as supporting software for calculations. The stages of observation, interviews, dissemination of questionnaires, modeling and choice are processes carried out in data processing. Rest time criterias with a weight value of 0.534 and an inconsistency value of 0.004466 was the main criteria chosen by the respondents. Meanwhile, Sleep Duration is a strategy solution chosen as the top priority with the weight value of 0.220 with an inconsistency value of 0. The results of the two inconsistencies each have a CR value of &lt; 0.1 indicating that the results of rest hour application data processing based on the 2006 Maritime Labor Convention can be declared consistent and accurate.

The Effects of a 90-km Outdoor Cycling Ride on Performance Outcomes Derived From Ramp-Incremental and 3-Minute All-Out Tests.

Bitel, M, Keir, DA, Grossman, K, Barnes, M, Murias, JM, and Belfry, GR. The effects of a 90-km outdoor cycling ride on performance outcomes derived from ramp-incremental and 3-minute all-out tests. J Strength Cond Res 38(3): 540-548, 2024-The purpose of this study was to determine whether laboratory-derived exercise intensity and performance demarcations are altered after prolonged outdoor cycling. Male recreational cyclists ( n = 10; RIDE) performed an exhaustive ramp-incremental test (RAMP) and a 3-minute all-out test (3MT) on a cycle ergometer before and after a 90-km cycling ride. RAMP-derived maximal oxygen uptake (V̇O 2max ), gas exchange threshold (GET), respiratory compensation point (RCP), and associated power output (PO), as well as 3MT-derived critical power (CP) and work performed above CP, were compared before and after ∼3 hours of outdoor cycling. Six active men served as "no-exercise" healthy controls (CON), who, instead, rested for 3 hours between repeated RAMP and 3MT tests. During the 90-km ride, the duration within the moderate-intensity, heavy-intensity, and severe-intensity domains was 59 ± 24%, 40 ± 24%, and 1 ± 1%, respectively. Compared with pre-90 km, post-RAMP exhibited reductions in (a) V̇O 2max (4.04 ± 0.48 vs. 3.80 ± 0.38 L·min -1 ; p = 0.026) and associated PO (392 ± 30 W vs. 357 ± 26 W; p = 0.002); (b) the V̇O 2 and PO at RCP (3.49 ± 0.46 vs. 3.34 ± 0.43 L·min -1 ; p = 0.040 and 312 ± 40 W vs. 292 ± 24 W; p = 0.023); and (c) the PO (214 ± 32 W vs. 198 ± 25 W; p = 0.027), but not the V̇O 2 at GET (2.52 ± 0.44 vs. 2.44 ± 0.38 L·min -1 ; p = 0.388). Pre-90 km vs. post-90 km 3MT variables showed reduced W' (9.8 ± 3.4 vs. 6.8 ± 2.6 kJ; p = 0.002) and unchanged CP (304 ± 26 W and 297 ± 34 W; p = 0.275). In the CON group, there were no differences in V̇O 2max , GET, RCP, W', CP, or associated power outputs ( p > 0.05) pre-to-post 3 hours of rest. The preservation of critical power demonstrates that longer-duration maximal efforts may be sustained after long-duration cycle. However, shorter sprints and higher-intensity efforts eliciting V̇O 2max will exhibit decreased PO after 3 hours of a predominantly moderate-intensity cycle.