Physical inactivity plays a role in the incidence of cardiovascular disease (CVD). Although the current guidelines for physical activity, such as the prescription of exercise, seek to combat CVD, attaining the recommended targets remains challenging. Tennis exercise has been proven to have a unique advantage in reducing the mortality of CVD, but little is known about the influence of playing tennis on impaired vascular endothelial function (VEF), which initiates CVD. Thus, this study aimed to investigate whether regular tennis participation could protect the VEF better than merely meeting the physical activity recommended by the current guidelines. A cross-sectional design was performed based on a sample of 38 healthy postmenopausal women who were matched for physical activity, of which 17 subjects had long-term tennis experience and 21 age-matched subjects regularly exercised but did not play tennis. The cardiovascular function and the body composition of all subjects were measured. We used cluster analysis to assess the overall health status. The modeling results showed that the tennis players performed better in terms of VEF than the nonplayers (10.55 ± 0.58 vs. 8.69 ± 0.52, p < 0.01, R²_ad = 0.367), while the wall shear stress positively correlated with VEF (r = 0.505, p < 0.05), after controlling for age and physical activity levels. Regular tennis exercise may be a protective factor for VEF, and further study should be performed to research the role of hemodynamics in tennis exercise.

Background : Accumulating evidence suggests that 24-hour movement behaviors are associated with chronic inflammation. However, few studies have examined older adults’ adherence to guidelines and inflammatory biomarkers. This study aimed to investigate adherence to 24-hour movement guidelines and its associations with systemic inflammatory biomarkers (SII/SIRI) among older adults. Methods : This cross-sectional study included adults aged ≥60 years from the National Health and Nutrition Examination Survey 2009–2018. Twenty-four-hour movement behaviors were assessed using standardized questionnaires. SII and SIRI were calculated from complete blood count parameters and natural log-transformed (Ln-SII and Ln-SIRI). Ordinal logistic regression models were used to examine the associations of adherence to 24-hour movement guidelines with Ln-SII and Ln-SIRI levels. Sex- and age-stratified analyses were also conducted. Results : Among 2469 participants (mean age: 68.59 [6.31] y), 21.95% met all 3 guidelines, whereas 37.55%, 29.73%, and 10.77% met 2, 1, or none, respectively. Compared with meeting none of the guidelines, meeting all 3 guidelines was associated with lower odds of inflammatory burden (Ln-SII: odds ratio [OR] = 0.60; 95% CI, 0.42 to 0.86; Ln-SIRI: OR = 0.55; 95% CI, 0.39 to 0.78). Significant inverse associations were observed among males (Ln-SII: OR = 0.57; 95% CI, 0.35 to 0.93; Ln-SIRI: OR = 0.45; 95% CI, 0.27 to 0.75) and adults aged ≥65 years (Ln-SII: OR = 0.57; 95% CI, 0.37 to 0.87; Ln-SIRI: OR = 0.53; 95% CI, 0.34 to 0.83), with no significant interactions by sex or age. Conclusions : Adherence to the 24-hour movement guidelines was inversely associated with systemic inflammation among older adults. Subgroup analyses suggested potentially larger protective associations among males and adults aged ≥65 years.