Habitual isomaltulose intake reduces arterial stiffness associated with postprandial hyperglycemia in middle-aged and elderly people: a randomized controlled trial.

Endothelin-1 (ET-1), produced by vascular endothelial cells, plays a pivotal role in the regulation of vascular tone. Isomaltulose, a naturally occurring sweetener and structural isomer of sucrose, reduces postprandial hyperglycemia, but its effect on arteriosclerosis due to hyperglycemia is unknown. The effects of 12 weeks of isomaltulose administration on ET-1 levels, a peptide that regulates arterial stiffness, blood pressure, and vascular tone, were tested before and after an oral glucose tolerance test. Fifty-four healthy middle-aged and older adults (30 men and 24 women) were divided into two groups: (1) a 25 g isomaltulose jelly drink intake group (Group I, 27 participants, mean age 55 ± 1 years) and (2) a sucrose jelly drink intake group (Group S, 27 participants, mean age 55 ± 1 years), each consuming isomaltulose or sucrose daily for 12 weeks, and a randomized, controlled study was conducted. Participants visited the laboratory before the intervention and 4, 8, and 12 weeks after the intervention to measure carotid-femoral (cf) and brachial-ankle (ba) pulse wave velocity (PWV), systolic blood pressure (BP), plasma glucose (PG), insulin, and ET-1 levels before and 60 and 120 min after a 75-g OGTT. baPWV, and ET-1 levels before intervention were significantly increased after 75-g OGTT compared to before 75-g OGTT in both groups (p < 0.05). The post-intervention baPWV, and ET-1 levels were significantly increased after 75-g OGTT in Group S compared to before 75-g OGTT (p < 0.05), whereas no significant changes were observed in Group I. These results suggest that consumption of isomaltulose, which has a lower GI than sucrose, is more effective in preventing the increases in systemic arterial stiffness associated with postprandial hyperglycemia in healthy middle-aged and older adults.

Two-year outcomes of intravitreal brolucizumab for neovascular age-related macular degeneration: treat, extend, and stop-protocol.

PURPOSE: To investigate the real-world 2-year treatment outcomes of intravitreal brolucizumab (IVBr) for neovascular age-related macular degeneration (nAMD). METHODS: This multicenter, prospective, and interventional study included 53 eyes treated with brolucizumab from October 2020 to August 2021 at 3 institutions. A modified treat-and-extend (TAE) regimen with predefined discontinuation criteria was used. The mTAE regimen was discontinued if patients responded positively and achieved a treatment interval of 16 weeks twice with no sign of recurrence. The number of patients discontinuing TAE and the visual and anatomic changes at 1 and 2 years after the first IVBr were evaluated. RESULTS: Thirty-eight eyes from 38 patients (71%) completed the 2-year observation period and 7 eyes from 7 patients experienced intraocular inflammation (IOI). Of these 38 patients, 18 (47%) could discontinue the TAE at a median [interquartile range] of 13.1 [12.9-16.8] months after the first IVBr. Best-corrected visual acuity, central subfield retinal thickness, and central choroidal thickness were significantly improved compared with baseline at both 1 and 2 years after the first IVBr (all P < 0.001). An extension study revealed a 1-year recurrence rate of 5.6% (standard deviation, 5.4%) after TAE discontinuation. CONCLUSIONS: While IOI is a concern with brolucizumab, careful observation allows discontinuing the TAE regimen in patients treated with IVBr. Moreover, brolucizumab may reduce the risk of recurrence after treatment interruption. TRIAL REGISTRATION NUMBER: UMIN Clinical Trials Registry ( http://www.umin.ac.jp/ ; R000050688 UMIN 000044374).

Effects of free weight and body mass-based resistance training on thigh muscle size, strength and intramuscular fat in healthy young and middle-aged individuals.

NEW FINDINGS: What is the central question of this study? How do free weight resistance training (RT) and body mass-based RT for 8 weeks compare for isometric muscular strength, muscle size and intramuscular fat (IMF) content in the quadriceps femoris? What is the main finding and its importance? Free weight and body mass-based RTs could induce muscle hypertrophy; however, decreased IMF content was observed following the body mass-based RT alone. ABSTRACT: The objective of this study was to investigate the effects of free weight and body mass-based resistance training (RT) on muscle size and thigh intramuscular fat (IMF) in young and middle-aged individuals. Healthy individuals (aged 30-64 years) were assigned to either a free weight RT group (n = 21) or a body mass-based RT group (n = 16). Both groups performed whole-body resistance exercise twice a week for 8 weeks. Free weight resistance exercises (squats, bench press, deadlift, dumbbell rows and back range) involved 70% one repetition maximum, with three sets of 8-12 repetitions per exercise. The nine body mass-based resistance exercises (leg raise, squats, rear raise, overhead shoulder mobility exercise, rowing, dips, lunge, single-leg Romanian deadlifts and push-ups) included the maximum possible repetitions per session, which were performed in one or two sets. Mid-thigh magnetic resonance images using the two-point Dixon method were taken pre- and post-training. The muscle cross-sectional area (CSA) and IMF content in the quadriceps femoris were measured from the images. Both the groups showed significantly increased muscle CSA post-training (free weight RT group, P = 0.001; body mass-based RT group, P = 0.002). IMF content in the body mass-based RT group significantly decreased (P = 0.036) but did not significantly change in the free weight RT group (P = 0.076). These results suggest that the free weight and body mass-based RTs could induce muscle hypertrophy; however, in healthy young and middle-aged individuals, decreased IMF content was induced following the body mass-based RT alone.

Cytokine profiles in the aqueous humor following brolucizumab administration for exudative age-related macular degeneration.

PURPOSE: To identify the inflammatory cytokine profile in the aqueous humor (AH) of patients with intraocular inflammation (IOI) after intravitreal administration of brolucizumab (IVBr) for neovascular age-related macular degeneration. METHODS: Eight eyes from seven patients with IOI after initial IVBr (IVBrIOI +) were enrolled. Sixteen eyes from 16 patients without IOI after IVBr (IVBrIOI -) and aflibercept (IVA) were used as controls. AH samples were analyzed using a multiplex immunoassay. RESULTS: C-C motif chemokine ligand (CCL)2, C-X-C motif chemokine ligand (CXCL)1, CXCL10, CXCL13, interleukin (IL)-6, IL-8, IL-10, matrix metalloproteinase (MMP)-1, MMP-9, granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage colony-stimulating factor (GM-CSF), intercellular adhesion molecule (ICAM)-1, E-selectin, and P-selectin levels were significantly higher in IVBrIOI + than in IVBrIOI - and IVA. Vascular endothelial growth factor (VEGF) was significantly lower in IVBrIOI - compared to that in IVBrIOI + and IVA. In the IVBrIOI + group, there were significant correlations between CCL2, CXCL1, IL-6, IL-8, IL-10, G-CSF, GM-CSF, ICAM-1, and E-selectin, which also exhibited significant correlations in the IVBrIOI - group. CONCLUSION: The number of inflammatory cytokines increases during IOI, which is associated with type IV hypersensitivity and vascular inflammation. Some cytokines exhibit correlations even in non-inflamed eyes, indicating a subclinical response to IVBr.

Arterial stiffness and physical fitness on cognitive function in community-dwelling middle-aged and older adults.

PURPOSE: This study examined whether decline in cognitive function is related to arterial stiffness and reduction in physical fitness in middle-aged and older adults. METHODS: A total of 1554 healthy middle-aged and older adults participated in this study. The trail making test parts-A (TMT-A) and B (TMT-B), brachial-ankle pulse wave velocity (baPWV), grip strength, the 30-s chair stand (CS-30) test, the 6-min walk (6MW) test, the 8-foot up-and-go (8UG) test and gait assessment were performed. Participants were classified into a middle-aged group (40-64 years; mean, 50.4 ± 0.2 years) or an older group (≥ 65 years; mean, 73.1 ± 0.5 years), as well as into three cognition (COG) groups (high, moderate, and low) based on median TMT-A and -B scores (high scores on both, either, or neither TMT-A and -B, respectively). RESULTS: The results revealed that baPWV was significantly lower in the high-than in the moderate- and low-COG groups in both middle-aged and older adults (P < 0.05). In addition, except for a few parameters (e.g., 6MW test in middle-aged adults), physical fitness was significantly higher in the high-than in the moderate- and low-COG groups in both middle-aged and older adults (P < 0.05). Multivariate regression analysis revealed that baPWV (P < 0.05) and some physical fitness indicators (grip strength, CS-30, and 8UG) were significantly independently associated with both TMT-A and -B in the middle-aged and older groups (P < 0.05). CONCLUSION: These results suggest that increased arterial stiffness and reduced physical fitness are associated with impaired cognitive function in middle-aged and older adults.

Peripheral Arterial Stiffness is Associated with Maximal Oxygen Uptake in Athletes.

Increased central arterial stiffness is associated with decreased maximal oxygen uptake (V̇O2max). Endurance exercise training improves arterial function throughout the whole body, but the relationship between central and peripheral arterial stiffness and V̇O2max is unknown. The present study investigated the relationship between central and peripheral arterial stiffness and V̇O2max in endurance-trained athletes. Twenty-one young male endurance-trained athletes and 12 sedentary controls were included in this study. Resting values for carotid-femoral velocity and femoral-ankle pulse wave velocity were obtained to assess central and peripheral arterial stiffness, respectively. V̇O2max was obtained by incremental cycle ergometer testing. Both carotid-femoral pulse wave velocity (P=0.019) and femoral-ankle pulse wave velocity (P=0.028) were lower in athletes than in controls. V̇O2max was significantly higher in athletes compared to controls (P<0.001). Significant correlations were found between carotid-femoral pulse wave velocity and V̇O2max (r=-0.510, P=0.018) and between femoral-ankle pulse wave velocity and V̇O2max (r=-0.472, P=0.031) in athletes. However, no correlations were evident in controls. These results suggest that higher V̇O2max is associated with lower peripheral arterial stiffness in addition to central arterial stiffness among endurance-trained athletes.

Eight-week neuromuscular electrical stimulation training produces muscle strength gains and hypertrophy, and partial muscle quality improvement in the knee extensors.

This study investigated the effect of an 8-week neuromuscular electrical stimulation (NMES) training programme (3 days/week) on muscle quantity and quality and single-joint performance in the knee extensors. Thirty-nine untrained young male participants were randomly assigned to NMES training (n = 21) and control (n = 18) groups. The 8-week NMES training induced significant increase in the isometric maximal voluntary contraction (MVC) torque of the knee extensors (≈9.3%), muscle volume of the individual and entire quadriceps muscles determined by magnetic resonance imaging (≈3.3%-6.4%), and a significant decrease in the ultrasound echo intensity of the vastus lateralis (≈-4.0%); however, hypertrophy of the vastus intermedius (i.e., the deep muscle) was limited (≈3.3%). In the NMES training group, the repeated measures correlations of the isometric MVC torque with the muscle volume of the entire quadriceps muscle and each quadriceps muscle were significant (rrm (20) = 0.551-0.776), whereas that of the isometric MVC torque with the ultrasound echo intensity of the vastus lateralis was not significant. These findings suggest that NMES training produces muscle strength gains, muscle hypertrophy, and partial muscle quality improvement and that the NMES training-induced muscle strength gains is caused by muscle hypertrophy in the knee extensors.

The Effect of Online Low-intensity Exercise Training on Fitness and Cardiovascular Parameters.

Online exercise is undoubtedly useful and important; however, chronic adaptations to online exercise, particularly strength gain, muscle hypertrophy, and cardiovascular parameters, remain unclear. We investigated the effect of online exercise training using Zoom on fitness parameters compared with the same exercises supervised directly. In the present study, 34 subjects (age: 42.9±14.4 years) were included. Twenty-three subjects performed 8 weeks of body mass-based exercise training online using Zoom, and eleven subjects performed the same exercise supervised directly as the control group. The subjects performed low-load resistance exercises twice a week for 8 weeks for a total of 16 sessions. The sessions included 9 exercises: leg raises, squats, rear raises, shoulder presses, rowing, dips, lunges, Romanian dead lifts, and push-ups. Chair-stand, push-up, and sit-and-reach tests were performed on all subjects. Overall, the home exercise program effectively increased strength and muscle mass and decreased blood pressure and arterial stiffness, but there were no differences between the groups. Changes in chair-stand and sit-and-reach test results were higher in the control group than in the online group. Our results show that there is a similar training response to body mass-based training in both groups, even with virtual experiences using Zoom.

Arterial Stiffness and Left Ventricular Diastolic Function in Endurance Athletes.

The present study investigated the relationship between arterial stiffness and left ventricular diastolic function in endurance-trained athletes. Sixteen young male endurance-trained athletes and nine sedentary of similar age men participated in this study. Resting measures in carotid-femoral pulse wave velocity were obtained to assess arterial stiffness. Left ventricular diastolic function was assessed using 2-dimensional echocardiography. The athletes tended to have lower arterial stiffness than the controls (P=0.071). Transmitral A-waves in the athletes were significantly lower (P=0.018) than the controls, and left ventricular mass (P=0.034), transmitral E-wave/A-wave (P=0.005) and peak early diastolic mitral annular velocity at the septal site (P=0.005) in the athletes were significantly greater than the controls. A significant correlation was found between arterial stiffness and left ventricular diastolic function (E-wave: r=- 0.682, P=0.003, E-wave/A-wave: r=- 0.712, P=0.002, peak early diastolic mitral annular velocity at the septal site: r=- 0.557, P=0.025) in the athletes, whereas no correlation was found in controls. These results suggest that lower arterial stiffness is associated with higher left ventricular diastolic function in endurance-trained athletes.

Central Haemodynamics Are Associated With Pulmonary Function in Postmenopausal Women.

PURPOSE: Increased arterial stiffness predicts cardiovascular disease, which is associated with deteriorated pulmonary function and worsened chronic obstructive pulmonary disease. The present study examined whether arterial function was associated with pulmonary function in postmenopausal women. METHODS: This study evaluated 41 postmenopausal women (age range: 59-85 years). Arterial function was measured as central systolic blood pressure (cSBP), central pulse pressure (cPP), brachial systolic BP (bSBP), brachial diastolic BP (bDBP), brachial PP (bPP), brachial mean arterial pressure (bMAP) and the augmentation index (AIx). AIx was adjusted for a heart rate of 75 beats per minute (bpm) (AIx@75) and served as the index of arterial stiffness determined by the reflected wave at the central artery. Pulmonary function was measured as forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1) and the FEV1/FVC ratio. RESULTS: Univariate regression analysis demonstrated that cPP, bDBP and bPP were correlated with FVC and FEV1 (p<0.05, respectively), while AI@75 was correlated with FVC, FEV1 and FEV1/FVC ratio (p<0.01, respectively). A stepwise multivariate regression analysis revealed that bDBP was independently associated with FVC (p=0.032), while AI@75 was independently associated with FVC, FEV1 and FEV1/FVC ratio (p=0.001, p=0.003 and p=0.017, respectively). The FVC, FEV1 and FEV1/FVC ratio were lower in participants with a high AIx versus with a low AIx (p=0.0001, p=0.001 and p=0.044, respectively). CONCLUSION: These results suggest that increased AIx is associated with lower pulmonary function in postmenopausal women.

Isometric handgrip training reduces blood pressure and wave reflections in East Asian, non-medicated, middle-aged and older adults: a randomized control trial.

PURPOSE: The aim of this study was to investigate the effects of isometric handgrip (IHG) training on central and peripheral blood pressure (BP) and wave reflections in East Asian non-medicated middle-aged and older adults. METHODS: Twenty-two men and women (mean age 65 ± 11 years) who were not actively involved in regular resistance or endurance training were randomly assigned to a group that did IHG and a control (CON) group. The IHG training was comprised of four unilateral 2-min isometric contractions at 30% of maximal voluntary contraction using a programmed handgrip dynamometer with 1-min rest periods for 5 days per week for 8 weeks. RESULTS: Baseline central systolic BP (cSBP), brachial systolic BP (bSBP), brachial diastolic BP (bDBP), and the augmentation index (AIx) (via an automated applanation tonometric system) did not differ significantly between the groups. Compared to baseline, cSBP, bSBP, bDBP, and AIx decreased significantly after the 8-week study period in the IHG group (P < 0.05). No significant changes in central and peripheral BP and AIx were observed in the CON group. CONCLUSIONS: These results suggest that IHG training could reduce central and peripheral BP and wave reflections in East Asian non-medicated middle-aged and older adults.

Effects of blackcurrant extract on arterial functions in older adults: A randomized, double-blind, placebo-controlled, crossover trial.

PURPOSE: Blackcurrant extract mainly contains anthocyanins. Several reports suggest that anthocyanins have beneficial effect for cardiovascular functions. The aim of this study was to examine the effect of 7-day intake of New Zealand blackcurrant (NZBC) extract on arterial functions, e.g. arterial stiffness, and serum lipids. METHODS: A randomized, double-blind, placebo-controlled, crossover design study with a washout period of 28 days was conducted. Fourteen older adults participated in this study (age 73.3 ± 1.7 years). Participants took either a 7-day course of placebo or two capsules of NZBC extract (each 300 mg capsule contains 35% blackcurrant extract). Participants took one of the two trials first and then took the other after a washout period. Carotid-femoral pulse-wave velocity, an index of central arterial stiffness, and central blood pressure were measured at baseline and again at the end of the 7-day study period. RESULTS: Compared to baseline, carotid-femoral pulse-wave velocity (P = .03) and central blood pressure (P = .02) decreased significantly after the 7-day study period with NZBC intake. In addition, carotid-femoral pulse-wave velocity (P = .04) and central blood pressure (P = .001) in the NZBC intake trial decreased significantly more than in the placebo intake trial. No effects were observed on serum lipids. CONCLUSION: These results suggest that short-term NZBC intake reduces central arterial stiffness and central blood pressure in older adults. Therefore, anthocyanin-rich blackcurrants might be beneficial for maintaining or improving cardiovascular health as an alternative to pharmaceutical medications. ABBREVIATIONS: Aix: augmentation index; BP: blood pressure; cfPWV: carotid-femoral pulse-wave velocity;  CVD: cardiovascular diseases; DBP: diastolic blood pressure;  faPWV: femoral-ankle pulse-wave velocity; FG: fasting glucose; HDL: high-density lipoprotein cholesterol; LDL: low-density lipoprotein cholesterol; MBP: mean blood pressure; NZBC: New Zealand blackcurrant; PP: pulse pressure; SBP: systolic blood pressure; TG: triglycerides.

Effects of interval walking training compared to normal walking training on cognitive function and arterial function in older adults: a randomized controlled trial.

PURPOSE: This study investigated whether interval walking training (IWT) improves cognitive function and arterial function in older adults. METHODS: A total of 68 older adults registered in clinical trials (mean age ± standard deviation, 70 ± 4 years) were randomly assigned to two groups: one group performed IWT (n = 34), and the other performed normal walking training (NWT, n = 34). Participants in the IWT group performed five or more sets of low-intensity walking (duration: 3 min per set; peak aerobic capacity for walking: 40%) followed by high-intensity walking (duration: 3 min per set; peak aerobic capacity for walking: > 70%). The NWT group walked at approximately 50% of the peak aerobic capacity for walking. The IWT and NWT were performed for 20 weeks. Trail making test-A and B and carotid-femoral pulse wave velocity (cfPWV) were measured in both groups at baseline and again at the end of the 20-week study period. RESULTS: Compared to baseline, time for trail making test-A (IWT group: P = 0.00004, NWT group: P = 0.000006) and B (IWT group: P = 0.03, NWT group: P = 0.003) as well as cfPWV (IWT group: P = 0.000002, NWT group: P = 0.03) decreased significantly after the 20-week study period in both groups. However, cfPWV in the IWT group decreased significantly more than that in the NWT group (P = 0.03). CONCLUSION: These results suggested that although both IWT and NWT were similarly effective at improving cognitive function, IWT reduced central arterial stiffness more than NWT.

Acute effects of walking in water on vascular endothelial function and heart rate variability in healthy young men.

AIM: Aquatic exercise might improve endothelial function due to hydrostatic pressure increasing blood flow and causing shear stress to the endothelium. However, the acute effect of aerobic exercise in water on endothelial function is unclear. The present study compares the acute effect of aerobic exercise at moderate intensity in water and on land on endothelial function. METHODS: Nine healthy young men walked on a treadmill for 30 min while immersed in water up to the xiphoid at 30.0 ± 0.2°C and on land at an intensity equivalent to 60% heart rate reserve in a crossover trial. Brachial artery flow-mediated dilation (FMD) was measured at baseline and at 30 and 60 min after exercise. Autonomic nervous activity was compared among conditions at the heart rate variability (HRV) during exercise. RESULTS: FMD significantly decreased at 30 min after exercise on land trial (p < 0.05), but did not change after the aquatic trial. However, FMD was significantly higher after aquatic trial than land trial (p < 0.05) at 30 and 60 min after exercise, whereas heart rate, blood pressure, and HRV did not significantly differ between them. CONCLUSION: These findings demonstrate that aerobic exercise in water suppressed the decrease in FMD compared with that on land, regardless of autonomic nervous activity.

Acute effects of repeated bouts of aerobic exercise on arterial stiffness after glucose ingestion.

The aim of this study was to investigate the acute repeated bouts of aerobic exercise decrease leg arterial stiffness. However, the influence of repeated bouts of aerobic exercise on arterial stiffness after glucose ingestion is unknown. The present study investigates the acute effects of repeated bouts of aerobic exercise on arterial stiffness after the 75-g oral glucose tolerance test (OGTT). Ten healthy young men (age, 23.2 ± 0.9 years) performed repeated bouts of aerobic exercise trial (RE, 65% peak oxygen uptake; two 15 min bouts of cycling performed 20 min apart) and control trial (CON, seated and resting in a quiet room) at 80 min before the 75-g OGTT on separate days in a randomized, controlled crossover fashion. Carotid-femoral (aortic) and femoral-ankle (leg) pulse wave velocity, carotid augmentation index, brachial and ankle blood pressure, heart rate and blood glucose and insulin levels were measured before (baseline) and 30, 60 and 120 min after the 75-g OGTT. Leg pulse wave velocity, ankle systolic blood pressure and blood glucose levels increased from baseline after the 75-g OGTT in the CON trial, but not in the RE trial. The present findings indicate that acute repeated bouts of aerobic exercise before glucose ingestion suppress increases in leg arterial stiffness following glucose ingestion. Abbreviations: RE trial repeated bouts of aerobic exercise trial; CON trial control trial; BG blood glucose; VO2peak peak oxygen uptake; PWV Pulse wave velocity; AIx carotid augmentation index; BP blood pressure; HR heart rate; CVs coefficients of variation; RPE Ratings of perceived exertion; SE standard error.

Effects of acute footbath before and after glucose ingestion on arterial stiffness.

The present study investigated the acute effect of a footbath on increases in arterial stiffness after glucose ingestion in healthy young women. Nine healthy young women (aged 18.4 ± 0.2 years; mean ± SE) completed three trials in random order. They started a footbath before 75-g oral glucose ingestion, a footbath after 75-g oral glucose ingestion and no footbath (control) trials. Aortic (carotid-femoral) and leg (femoral-ankle) pulse wave velocity, the carotid augmentation index, carotid, brachial and ankle blood pressure, heart rate, blood glucose levels, insulin levels and sublingual temperature were measured before (baseline) and at 15, 30, 60 and 90 min after the 75-g oral glucose ingestion. Aortic pulse wave velocity and brachial systolic blood pressure did not change from baseline to after the 75-g oral glucose ingestion in all trials. Leg pulse wave velocity and ankle systolic blood pressure were increased from baseline to after the 75-g oral glucose ingestion in the footbath after glucose ingestion and control trials, but not in the footbath before glucose ingestion trial. These results suggest that a footbath effectively suppresses the increase in leg arterial stiffness after glucose ingestion when implemented before glucose ingestion.

Acute effects of accumulated aerobic exercise on aortic and peripheral pulse wave velocity in young males.

[Purpose] The present study investigates the acute effects of accumulated aerobic exercise on aortic and peripheral pulse wave velocity (PWV) in healthy young males. [Subjects and Methods] We gathered data from 9 healthy young males (age, 23.4 ± 0.6 years) performed aerobic exercise group (AE, 65% peak oxygen uptake; two 15 min bouts of cycling performed with 20 min rest) and control group (CON, seated and resting in a quiet room) on separate days in a randomized, controlled crossover fashion. Carotid-femoral (aortic) and femoral-ankle (peripheral) PWV, carotid augmentation index, carotid, brachial and ankle blood pressure and heart rate were measured before (baseline) and 20 min for both groups. [Results] Aortic and peripheral PWV decreased from baseline at 20 min for the AE group, but not in the CON group. [Conclusion] The present findings indicate that acute accumulated aerobic exercise decreases aortic and peripheral PWV in healthy young males.

Acute effects of static stretching exercise-induced decrease in arterial stiffness on maximal aerobic capacity.

BACKGROUND: We recently have reported that individual day-to-day arterial stiffness variations are associated with maximal aerobic capacity. However, the evidence of this phenomenon was not provided sufficiently. The present study aimed to examine whether a decrease in arterial stiffness through static stretching exercise could enhance maximal aerobic capacity. METHODS: Twelve healthy young men (age 22±2 years, mean and standard deviation) participated in this study and underwent two separate sessions in a randomized controlled crossover design: a single session of a whole-body static stretching exercise protocol that involved the trunk, upper limb, and lower limb (stretch condition), and sedentary control where they rested in the exercise room. Brachial-ankle pulse wave velocity (baPWV) was measured as an index of systemic arterial stiffness before, immediately after and at 30 min after both conditions. Maximal oxygen uptake (V̇O2max) was assessed using a graded power test on an electronically braked cycle ergometer after these measurements. RESULTS: As we expected, there was a significant decrease in the baPWV at 30 min after the stretch trial compared to baseline values (P=0.01). The baPWV in the stretch condition was lower than that of the control condition, while V̇O2max in the stretch condition was higher than that of the control condition (P=0.03). CONCLUSIONS: Based on these findings, it can be inferred that an acute reduction in arterial stiffness may contribute to change in maximal aerobic capacity.

Effects of pre-exercise intake of plant- and animal-based foods on arterial function and aerobic exercise capacity in healthy young men: a randomized cross-over trial.

The purpose of this study was to examine the effects of plant- versus animal-based food intake before exercise on arterial function and subsequent aerobic exercise capacity. Eleven healthy adult males (mean age, 22.6 ± 1.8 years) participated in this study. A plant- or animal-based randomized meal type crossover comparison was conducted on separate days with a uniform protein, fat, and carbohydrate balance. Both carotid-femoral pulse wave velocity (cfPWV), femoral-ankle pulse wave velocity (faPWV), and brachial artery flow-mediated dilatation (FMD) were measured as indexes of aortic and peripheral arterial stiffness and vascular endothelial function, respectively, before and at 120 min after the meal. After these measurements, maximal oxygen uptake was assessed using a graded power test on an electronically braked cycle ergometer. The results revealed that cfPWV was significantly lower, whereas FMD was significantly higher, at 120 min after compared with before the plant-based meal (p = 0.01 and 0.02, respectively). By contrast, cfPWV and FMD did not change at 120 min after compared with before the animal-based meal. In addition, faPWV did not change at 120 min after compared with before the meal for either meal type. Maximal oxygen uptake was higher in the plant- than in the animal-based meal type (p = 0.02). These results suggest that pre-exercise plant-based food intake may improve central arterial stiffness and vascular endothelial function, which may have favorable implications for aerobic exercise capacity.

One-year visual and anatomical outcomes of intravitreal faricimab injection for neovascular age-related macular degeneration after prior brolucizumab treatment.

This single-center retrospective cohort study analyzed the 1-year real-world treatment outcomes of 63 consecutive eyes (of 60 patients) with neovascular age-related macular degeneration (nAMD) that were switched from intravitreal brolucizumab (IVBr) to intravitreal faricimab (IVF) and managed on a treat-and-extend regimen with discontinuation criteria. After the switch, patients opted to continue IVF, to switch back to IVBr, or receive photodynamic therapy (PDT). Thirty-eight patients continued IVF, 16 patients were switched back to IVBr, 2 patients received PDT, and 4 patients paused treatment. Best-corrected visual acuity (BCVA), central subfield thickness (CST), subfoveal choroidal thickness (sf-CT), and injection intervals were compared immediately before and 1 year after the initial IVF. Whereas there was no change in BCVA and CST; 0 [- 0.0969 to 0.125, P = 0.58], - 1.5 [- 27.8 to 13.5, P = 0.11] µm, respectively, sf-CT decreased significantly; - 19.5 [- 45.5 to 7.75, P = 0.015] µm. The patients switched back showed no significant change in sf-CT. The injection interval extended significantly in the IVF continuation and the switch-back group (2.0 and 3.0 weeks, respectively; [P = 0.0007 and 0.0078]) in eyes with a pre-switching interval of less than 12 weeks. Faricimab shows promise as a safe and effective alternative to brolucizumab for treating nAMD.