Enhancing Nurse-Robot Engagement: Two-Wave Survey Study.

BACKGROUND: Robots are introduced into health care contexts to assist health care professionals. However, we do not know how the benefits and maintenance of robots influence nurse-robot engagement. OBJECTIVE: This study aimed to examine how the benefits and maintenance of robots and nurses' personal innovativeness impact nurses' attitudes to robots and nurse-robot engagement. METHODS: Our study adopted a 2-wave follow-up design. We surveyed 358 registered nurses in operating rooms in a large-scale medical center in Taiwan. The first-wave data were collected from October to November 2019. The second-wave data were collected from December 2019 to February 2020. In total, 344 nurses participated in the first wave. We used telephone to follow up with them and successfully followed-up with 331 nurses in the second wave. RESULTS: Robot benefits are positively related to nurse-robot engagement (ß=.13, P<.05), while robot maintenance requirements are negatively related to nurse-robot engagement (ß=-.15, P<.05). Our structural model fit the data acceptably (comparative fit index=0.96, incremental fit index=0.96, nonnormed fit index=0.95, root mean square error of approximation=0.075). CONCLUSIONS: Our study is the first to examine how the benefits and maintenance requirements of assistive robots influence nurses' engagement with them. We found that the impact of robot benefits on nurse-robot engagement outweighs that of robot maintenance requirements. Hence, robot makers should consider emphasizing design and communication of robot benefits in the health care context.

How do three components of professional commitment influence nurse-reported patient-centred care and care quality?

AIMS AND OBJECTIVES: To test how the three components of professional commitment (i.e. affective, continuance and normative professional commitment) are associated with nurse-reported patient-centred care and care quality. BACKGROUND: Patient-centred care and care quality are the two critical care outcomes. However, no study has yet examined how the three components of professional commitment are related to nurse-reported patient-centred care and care quality, showing a research gap. DESIGN: This study adopted a two-wave design (first wave in 2017 and second wave in 2019), which is known to reduce the possibility of reverse causality, and which was conducted in a large hospital in Northern Taiwan. METHODS: Proportionate random sampling was used. Full-time nurses were surveyed, while nursing students, interns, nurse practitioners and nursing supervisors were excluded. The first wave included 524 nurses, and 438 nurses were retained in the second wave. We used confirmatory factor analysis to verify the psychometric properties of the measures. Structural equation modelling was used to implement hypothesis testing. We used the Professional Commitment Scale of Meyer et al. (Journal of Applied Psychology, 1993, 78, 538), the Patient-Centered Care Scale of Laird-Fick et al. (Patient Education and Counseling, 2011, 84, 90) and the Care Quality Perceptions Scale of Teng et al. (Journal of Nursing Management, 2010, 18, 275). The STROBE statement was chosen as the EQUATOR checklist. RESULTS: Affective professional commitment was positively associated with nurse-reported patient-centred care (ß = .18, p = .002 and .01), which was positively associated with nurse-reported care quality (ß = .85, p < .001). Affective and normative professional commitment were also positively associated with nurse-reported care quality (ß = .17, p < .001). CONCLUSIONS: Our findings offer insights for nursing managers that nurses' affective and normative professional commitment could help upgrade care outcomes. Hospital managers should consider professional commitment as relevant to their workforce. RELEVANCE TO CLINICAL PRACTICE: Nursing managers could publicise reports documenting nurses' significant contributions to public health. This could strengthen affective professional commitment among nurses.

Relationship between psychological ownership of the nursing profession and turnover intention: A correlational survey among Taiwanese nurses.

AIMS: The aim of this study is to examine the relationship between psychological ownership of the nursing profession and turnover intention. BACKGROUND: There is a severe shortage of nurses worldwide. Research is needed to understand how nurses' intention to leave hospitals and the nursing profession can be alleviated. METHODS: This study adopted a cross-sectional design and a survey method. Proportionate random sampling was used to ensure sample representativeness. This study surveyed 430 registered nurses in a medical centre in Taiwan between December 2021 and January 2022. We used Turnover Scale and Self-Efficacy Scale and developed Having a Place Scale. RESULTS: Psychological ownership comprises three dimensions: self-efficacy, nurse identity and 'having a place' in the nursing profession. This research is the first to examine how these three dimensions of psychological ownership of the nursing profession are related to the intention to leave a hospital or the nursing profession. Self-efficacy and 'having a place' are negatively related to nurses' intention to leave a hospital (r = -.23 and -.31, p < .001). Nurse identity is negatively related to nurses' intention to leave the nursing profession (r = -.38, p < .001). Intention to leave a hospital is positively related to nurses' intention to leave the profession (r = .76, p < .001). CONCLUSION: The findings provide novel insights for retaining nurses. Nurse managers could use strategies such as including nurses in making workplace decisions and encouraging them to personalize their workspace. IMPLICATIONS FOR NURSING MANAGEMENT: Nurse managers can enhance nurses' self-efficacy and sense of 'having a place' to retain nurses in hospitals, while enhancing nurse identity to retain nurses in the profession.

How Robots Help Nurses Focus on Professional Task Engagement and Reduce Nurses' Turnover Intention.

PURPOSE: To examine how robot-enabled focus on professional task engagement and robot-reduced nonprofessional task engagement are related to nurses' professional turnover intention. DESIGN: We adopted a two-wave study design. METHODS: We collected the first wave of data in a large hospital in Taiwan during October and November 2019 and the second wave between December 2019 and February 2020. We used the data collected from 331 nurses who participated in both waves. FINDINGS: We found that robot-enabled focus on professional task engagement is positively related to nurses' overall job satisfaction and perceived health improvement. Robot-reduced nonprofessional task engagement is positively related to nurses' perceived health improvement. Both overall job satisfaction and perceived health improvement are negatively related to nurses' professional turnover intention. CONCLUSIONS: Robots' ability to focus nurses' efforts in professional tasks may help improve nurses' health and overall job satisfaction, and by extension reduce their turnover intention. CLINICAL RELEVANCE: Nurse managers could suggest hospitals introduce robots, particularly those that can share nurses' nonprofessional workload. This, meanwhile, could focus nurses' efforts on professional task engagement.

Reducing turnover intention to improve care outcome: A two-wave study.

AIMS: To ascertain how professional turnover intention impacts nurse-assessed care outcomes, including patient-centered care and care quality. BACKGROUND: Patient-centered care and care quality are critical to care outcomes. However, we do not know whether care outcomes would be improved by reducing nurses' professional turnover intention. DESIGN: We implemented a two-wave correlational follow-up design. METHODS: This study was conducted in a large-scale general in Taiwan during January and February 2018, and January and February 2019. We successfully obtained responses from 448 nurses in 2018 and subsequently followed up (in 2019). Most were women (97.5%), reflecting the profile of the local nurse population. Structural equation modeling was used to test hypotheses. RESULTS: Our findings indicate that nurses' professional turnover intention is negatively related to nurse-assessed, patient-centered care. Nurses' professional turnover intention is also negatively related to all the five perceptions of nurse-assessed care quality: that is, assurance, reliability, responsiveness, empathy, and tangibles. Moreover, years of working as a nurse is also positively related to nurse-assessed, patient-centered care and all the five perceptions of nurse-assessed care quality. CONCLUSION: This study examined nurses' professional turnover intention as an antecedent of nurse-assessed, patient-centered care and care quality. Our study shows that professional turnover intention may predict care outcomes. Overall, our study suggests that professional turnover intention not only impacts workforce stability but also impacts health-care outcomes. IMPACT: Our findings suggest that reduction of nurses' turnover intentions could benefit care outcomes. Hospital managers should know that nurses' turnover negatively impacts care outcomes.

Impact of professional commitment on professional capability improvement and care quality dimensions: A multi-wave study.

AIMS AND OBJECTIVES: To examine how the three dimensions of professional commitment impact professional capabilities improvement and five key dimensions of care quality. BACKGROUND: While professional commitment is known to retain nurses, we do not know how its three dimensions-affective, continuance and normative commitment-formulate five care quality dimensions: assurance, reliability, responsiveness, empathy and tangibles. DESIGN: We used a three-wave, follow-up design to follow a sample of nurse participants. METHODS: We collected responses from 430 nurses who worked for a medical centre in Northern Taiwan during 2017-2019. Most (78.9%) of the respondents had an age between 20-40 years. We used Professional Commitment Scale of Meyer et al. (Journal of Applied Psychology, 1993, 78, 538) and Care Quality Scale of Teng et al. (Journal of Nursing Scholarship, 2010, 41, 301). STROBE statement was chosen as EQUATOR checklist. RESULTS: We found that affective professional commitment is positively related to intention to improve professional capabilities, action to improve professional capabilities and thus to four dimensions of care quality: assurance, reliability, responsiveness and empathy. CONCLUSIONS: Our model explains how three key dimensions of professional commitment contribute to care quality. Our findings support the link between action to improve professional capabilities and dimensions of care quality. RELEVANCE TO CLINICAL PRACTICE: Nursing managers can inform nurses of positive patient feedback, thus enhancing nurses' affective professional commitment, which would likely motivate their devotion to upgrading their professional capabilities, thus further contributing to the quality of the care they provide.

How does burnout impact the three components of nursing professional commitment?

BACKGROUND: While the impact of burnout on organisational commitment has been widely observed, its impact on nursing professional commitment has not previously been investigated. The literature has clarified that professional commitment has three distinct components: affective, continuance and normative. AIMS: This study aims to investigate the relationships between burnout and the three components of nursing professional commitment. METHODS: This was a cross-sectional study using questionnaires to collect data in one large medical centre. Responses from 571 nurses were used for regression analysis. Among the sampled nurses, 90.9% had <15 years of nursing experience. MBI-HSS was used for measuring burnout. Three components of nursing professional commitment came from Meyer et al. (J Appl Psychol, 78, 1993 and 538) a formally validated instrument. RESULTS: Analytical results indicated that burnout is negatively related to affective and normative professional commitment (B ≤ -0.09, p < 0.01), but not related to continuance professional commitment (B = 0.05, p > 0.05). LINKING EVIDENCE TO ACTION: Nurse managers aiming to improve nurses' professional commitment should consider reducing nurses' burnout, for example improving nursing optimism and reducing administrative tasks, as suggested by the literature.

Which Aspects of Professional Commitment Can Effectively Retain Nurses in the Nursing Profession?

PURPOSE: This study examined which aspects of professional commitment can effectively retain nurses in the nursing profession. DESIGN, SETTINGS, AND PARTICIPANTS: This study used a longitudinal design, simple random sampling, and two-wave data collection to survey and follow up a representative sample of 579 nurses for 1 year in a major medical center in northern Taiwan. METHODS: Items measuring each aspect of professional commitment came from Meyer et al.'s scale. In the second wave, administrative data were culled to determine whether these nurses remain employed as nurses. Structural equation modeling is used to analyze the data. RESULTS: Analytical results indicate that continuance commitment predicts nurse retention in the nursing profession (path coefficient = 0.34, p < .01). CONCLUSIONS: Institutional efforts to improve continuance commitment (e.g., improved salary structures and enhanced professional development opportunities) likely retain nurses in the nursing profession. CLINICAL RELEVANCE: The findings of this study indicate the importance of continuance intention in retaining nurses. Nursing managers who face staff retention issues may consider making efforts to improve nurse salary and employer-sponsored benefits.

Effects of Playing Exergames on Quality of Life among Young Adults: A 12-Week Randomized Controlled Trial.

Objective: The purpose of this paper is to investigate whether playing exergames can enhance quality of life among young adults and it examines the potential moderators. Methods: A 12-week randomized controlled trial was conducted. Quality of life was measured using the short-form 36-item version (SF-36) scale. All the participants were between 20 and 24 years old in Taiwan. Participants in the intervention group (n = 55) were asked to play exergames for 12 weeks, three times a week and 30 minutes at a time, while participants in the control group (n = 62) did not play exergames. The changes in the scores on quality of life between the beginning and the end of the 12-week trial were calculated. Independent t-tests were used to analyze the differences. Results: The intervention group participants experienced an enhanced quality of life in terms of physical functioning, role-physical (role limitations due to physical health), general health, and social functioning. Moreover, the intervention group participants who were not enthusiastic about exercisers experienced an enhanced quality of life in physical functioning, role-physical, and general health. The intervention group participants who attempted to control their weight experienced enhanced general health, vitality, and mental health. Conclusion: Playing exergaming could contribute to users' quality of life in terms of both physical and mental health.

Nursing accreditation system and patient safety.

AIMS: This study investigated whether nursing accreditation level affects patient safety. BACKGROUND: The nursing accreditation system evaluates the capabilities of nursing professionals in Taiwan. While this system has been in place for years, few studies have investigated whether nursing accreditation level is associated with patient safety indicators. This study can help in understanding how nursing capabilities affect patient safety and can subsequently contribute to improvements in patient safety. METHODS: This study adopted a cross-sectional research design using questionnaires to collect responses from nurses working in two major medical centres in northern Taiwan. Regression analyses were conducted to test the study hypothesis. RESULTS: The analytical results show that nursing accreditation level is positively related to patient safety indicators. CONCLUSION: Health services managers should encourage nurses to advance their knowledge, skills, and professional capabilities because these may be positively related to patient safety. IMPLICATIONS FOR NURSING MANAGEMENT: Nursing managers who seek to improve patient safety should consider encouraging nurses to advance their accreditation level.

Influence of headaches on nurse intentions to leave the profession and the hospital: a cross-sectional survey.

Background: Few studies had examined whether headaches impact emotional exhaustion among nurses, and nurses' intentions to leave the hospital (current employer) or nursing profession. Objectives/Aims/Hypotheses: To examine the impact of headaches on nurses' self-efficacy and emotional exhaustion, and nurses' intentions to leave the hospital or the profession. Design: A cross-sectional survey design with proportional random sampling was used to collect data. Methods: This study was conducted in one medical center in Taiwan during February and March 2017. Inclusion criteria were full-time registered nurses. Totally, 570 full-time registered nurses were surveyed. Results: Nurse headaches were positively related to emotional exhaustion, which was positively related to the intention to leave the hospital, further positively related to the intention to leave the profession. Self-efficacy was negatively related to the intention to leave the profession. Impact statement and Conclusions: Our findings advise nurse managers to take actions to reduce nurses' headaches.

Systemic hypoxia affects cardiac autonomic activity and vascular hemodynamic control modulated by physical stimulation.

This study investigates how various hypoxic interventions affect cardiac autonomic activity and hemodynamic control during posture change and the Valsalva maneuver. Ten healthy sedentary men exposed to 12, 15 and 21% O(2) for 1 h in a normobaric hypoxia chamber in a random order. Before and after various O(2) concentrations were administered, subjects performed the sit-up test and Valsalva maneuver, respectively. An impedance plethysmography was utilized to measure blood pressure (BP) and vascular hemodynamics, whereas spectral analysis of heart rate variability (HRV) was performed to determine cardiac autonomic activity. Analytical results can be summarized as follows: while the patient rests in a supine position, exposure to 12% O(2) reduces the ratio of lower to upper extremity systolic BP, which is accompanied by (1) suppressed arterial reactive hyperemia and increased venous flow resistance, as well as (2) decreased total power and high frequency (HF) and increased low frequency (LF) and the ratio of LF to HF. Moreover, the hypoxia-induced changes of time and frequency domains in HRV at resting supine disappear following the sit-up test, whereas this hypoxic exposure attenuates the BP and heart rate responses to the Valsalva maneuver. Conversely, resting and physical stimuli-mediated HRV and vascular hemodynamic values are unaltered by both 15 and 21% O(2) exposures. We conclude that acute hypoxic exposure affects cardiovascular autonomic functions, with reactions determined by the intervening O(2) concentrations. Moreover, the BP and cardiac autonomic responses to 12% O(2), but not 15% O(2), exposure are depressed while performing posture change and the Valsalva maneuver.

Professional commitment, patient safety, and patient-perceived care quality.

PURPOSE: To examine how professional commitment influences patient safety and patient-perceived care quality. DESIGN: Investigators for this study used a cross-sectional design with questionnaires. A total of 348 pairs of nurses and inpatients were contacted at two medical centers in Taiwan during the period from August 2007 to January 2008, yielding 284 pairs of completed questionnaires. METHODS: Frequencies of six adverse patient events were used to measure patient safety; and the Service Quality Scale was used to measure patient-perceived care quality. Four items of the Professional Commitment Questionnaire were used to measure professional commitment. Regressions were used for the analyses. FINDINGS: Professional commitment positively influenced overall patient safety (ss=.19, p=.00) and overall patient-perceived care quality (ss=.13, p=.03). Furthermore, professional commitment positively influenced all patient safety indicators (ss>or=.12, p

A Randomized Controlled Trial on the Role of Enthusiasm About Exergames: Players' Perceptions of Exercise.

Objective: Exergames are popular technology applications that encourage individuals to engage in exercise and create positive moods for players. However, little is known as to whether playing exergames makes players perceive to be more energetic and relaxed and whether enthusiasm about doing exercise moderates such perceptions. To answer these questions, we use the Flow Theory and the Self-Determination Theory to develop the hypotheses. Methods: We conducted a randomized controlled trial, which randomly assigned 337 participants to an intervention group and a control group. We asked the participants in the intervention group to play exergames for 2 weeks. We measured enthusiasm about doing exercise by asking the participants to evaluate themselves as having enthusiasm on doing exercise or not. We measured participants' perceptions of happiness, perceived energy (the perception of sufficient physical and mental resources), and relaxation before and after the 2-week exergame playing, generating scores to represent their changes. Results: We found that playing exergames induces positive changes in happiness, perceived energy, and relaxation. Such changes were significant for participants who are enthusiastic about doing exercise, but not for those who are unenthusiastic about doing exercise. Conclusion: This study was the first using the Flow Theory and the Self-Determination Theory to examine the impact of playing exergames on players' perceptions and to identify the moderator role of enthusiasm about doing exercise. These positive impacts of exergames can be used in rehabilitation settings in encouraging positive attitudes and behaviors toward exercise.

Moderator Roles of Optimism and Weight Control on the Impact of Playing Exergames on Happiness: The Perspective of Social Cognitive Theory Using a Randomized Controlled Trial.

OBJECTIVE: The literature on exergames has examined their impact on user-perceived psychological health (i.e., user-perceived happiness), but little is known about whether such an impact depends on user characteristics. Therefore, this study used the perspective of social cognitive theory (SCT) to identify potential moderators (i.e., whether the user is optimistic or attempting to control his or her weight) of the impact of playing exergames on user-perceived happiness. MATERIALS AND METHODS: This large-scale randomized controlled trial recruited 337 college students (of whom 57.3% were female and all were aged 20-40 years) as participants. The participants were randomly assigned to the intervention group or the control group. Participants in the intervention group were asked to use an Xbox 360 to play 1 of 10 exergame programs for 30 minutes once a week for 2 weeks. Participants in the control group were not required to do so. Repeated-measures ANOVA was used for the analyses. RESULTS: The analytical results indicate that playing exergames helped to maintain happiness levels and prevented them from decreasing. The maintained happiness was more prominent among participants who were trying to control their weight, but did not differ between participants who were highly optimistic and those who were less optimistic. This study is the first using SCT to explain the contingent effect of playing exergames on user happiness. CONCLUSIONS: Exergames can maintain happiness among users, and such maintenance can be the strongest among users who are trying to control their weight.

Chronic intermittent hypoxia modulates eosinophil- and neutrophil-platelet aggregation and inflammatory cytokine secretion caused by strenuous exercise in men.

Although acclimatization to intermittent hypoxia (IH) improves exercise performance by increasing oxygen delivery and utilization, the effects of chronic IH on platelet-leukocyte interaction and inflammation-related cytokine secretion caused by strenuous exercise remain unclear. This investigation elucidates how two intensities of IH influence eosinophil- and neutrophil-platelet aggregation (EPA and NPA) as well as pro- and anti-inflammatory cytokines mediated by strenuous exercise. Twenty healthy sedentary men were randomly divided into severe (SIH) and moderate (MIH) IH groups; groups were exposed to 12% O2 (SIH) and 15% O2 (MIH) for 1 h/day, respectively, for 5 days/wk for 8 wk in a normobaric hypoxia chamber. Before IH intervention, 1) exercise up to maximal oxygen consumption promoted shear stress-, LPS-, and N-formyl-methionyl-leucyl-phenylalanine-induced EPA, increased IL-1beta and malondialdehyde levels, and decreased total antioxidant levels in plasma and 2) exposure to 12% O2, but not to 15% O2 for 1 h, enhanced LPS-induced EPA and reduced plasma total antioxidant levels. After IH for 8 wk, hypoxia- and exercise-promoted EPA, IL-1beta, or malondialdehyde levels were suppressed in both MIH and SIH groups, and plasma IL-6 and IL-10 levels in the SIH group were increased. However, the NPA induced by the shear force and chemical agonists was not changed under the two IH regimens. Therefore, both MIH and SIH regimens ameliorate eosinophil- and platelet-related thrombosis, proinflammatory IL-1beta secretion, and lipid peroxidation enhanced by strenuous exercise. Furthermore, SIH simultaneously increases circulatory anti-inflammatory IL-6 and IL-10 concentrations. These findings can help to develop effective IH regimens that improve aerobic fitness and minimize risk of thromboinflammation.

Impact of Playing Exergames on Mood States: A Randomized Controlled Trial.

To examine how playing exergames impacts the mood states of university students and staff, and whether such an impact depends on gender and players' previous exercise time. This study was designed as a randomized controlled trial. It enrolled 337 participants and randomly assigned them to an intervention group (n = 168) or a control group (n = 167). A 2-week exergame program was designed for the participants in the intervention group. They were required to play exergames for 30 consecutive minutes each week for 2 weeks and respond to the items measuring vigor, happiness, and perceived stress. All measures were administered before and after the study. Repeated measures analysis of variances were conducted. Playing exergames enhanced vigor and happiness for participants in the intervention group. This group exhibited more positive change in vigor and happiness than the control group. This effect of playing exergames was not moderated by gender, age, occupation (student or staff), or previous exercise time. Playing exergames may induce positive mood states among university students and staff.

Correction: Passive Leg Raising Correlates with Future Exercise Capacity after Coronary Revascularization.

[This corrects the article DOI: 10.1371/journal.pone.0137846.].

Passive Leg Raising Correlates with Future Exercise Capacity after Coronary Revascularization.

Hemodynamic properties affected by the passive leg raise test (PLRT) reflect cardiac pumping efficiency. In the present study, we aimed to further explore whether PLRT predicts exercise intolerance/capacity following coronary revascularization. Following coronary bypass/percutaneous coronary intervention, 120 inpatients underwent a PLRT and a cardiopulmonary exercise test (CPET) 2-12 days during post-surgery hospitalization and 3-5 weeks after hospital discharge. The PLRT included head-up, leg raise, and supine rest postures. The end point of the first CPET during admission was the supra-ventilatory anaerobic threshold, whereas that during the second CPET in the outpatient stage was maximal performance. Bio-reactance-based non-invasive cardiac output monitoring was employed during PLRT to measure real-time stroke volume and cardiac output. A correlation matrix showed that stroke volume during leg raise (SVLR) during the first PLRT was positively correlated (R = 0.653) with the anaerobic threshold during the first CPET. When exercise intolerance was defined as an anaerobic threshold < 3 metabolic equivalents, SVLR / body weight had an area under curve value of 0.822, with sensitivity of 0.954, specificity of 0.593, and cut-off value of 1504·10-3mL/kg (positive predictive value 0.72; negative predictive value 0.92). Additionally, cardiac output during leg raise (COLR) during the first PLRT was related to peak oxygen consumption during the second CPET (R = 0.678). When poor aerobic fitness was defined as peak oxygen consumption < 5 metabolic equivalents, COLR / body weight had an area under curve value of 0.814, with sensitivity of 0.781, specificity of 0.773, and a cut-off value of 68.3 mL/min/kg (positive predictive value 0.83; negative predictive value 0.71). Therefore, we conclude that PLRT during hospitalization has a good screening and predictive power for exercise intolerance/capacity in inpatients and early outpatients following coronary revascularization, which has clinical significance.

Tai Chi Chuan training is associated with enhanced endothelium-dependent dilation in skin vasculature of healthy older men.

OBJECTIVES: The vascular endothelium modulates vascular tone by synthesizing and metabolizing vasoactive substances. Endothelium-dependent vasodilation declines with age. This study investigated whether Tai Chi Chuan (TCC) training could enhance endothelial function in the skin vasculature of older men. SETTING: Community setting. DESIGN: Basic hemodynamic characteristics and skin vascular response to endothelium-dependent and -independent vasodilators were studied. PARTICIPANTS: Ten older men who practiced TCC, 10 older healthy sedentary men, and 12 younger healthy sedentary men. The older TCC subjects had practiced classical Yang TCC for a mean +/- standard deviation of 11.2 +/- 3.4 years; mean attendance was 5.1 +/- 1.8 times weekly. Sedentary subjects had not participated in any regular exercise training for at least 5 years. MEASUREMENTS: Different doses of 1% acetylcholine (ACh) and 1% sodium nitroprusside (SNP) were iontophoretically applied to the skin of subjects' lower legs, and cutaneous microvascular perfusion responses were determined by laser doppler measurements. Additionally, arterial and venous hemodynamic variables were measured by impedance plethysmograph. RESULTS: The older TCC group had higher lower leg arterial blood flow (LABF); LABF in response to reactive hyperemia; and lower leg venous capacity, tone and blood flow than their sedentary counterparts, but the older TCC group displayed similar arterial and venous hemodynamic variables to the younger sedentary group. The younger sedentary group had a higher ACh-induced cutaneous perfusion and a higher ratio of ACh- to SNP-induced cutaneous perfusion than the two older groups. The older TCC group showed a higher ACh-induced cutaneous perfusion and a higher ratio of ACh- to SNP-induced cutaneous perfusion than the older sedentary group. Skin vascular responses to SNP did not differ significantly between the three groups. CONCLUSIONS: Regular practice of TCC is associated with enhanced endothelium-dependent dilation in skin vasculature of older individuals. Moreover, TCC training may delay the age-related decline of venous compliance and hyperemic arterial response.