1
|
Alvares TS, Soares RN. Tissue desaturation is not a major determinant of aging-related impairment in skeletal muscle reactive hyperemia: a retrospective analysis. Am J Physiol Regul Integr Comp Physiol 2024; 327:R362-R368. [PMID: 39005082 DOI: 10.1152/ajpregu.00130.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/08/2024] [Accepted: 07/08/2024] [Indexed: 07/16/2024]
Abstract
Near-infrared spectroscopy combined with vascular occlusion test (NIRS-VOT) is a reactive hyperemia technique for in vivo evaluation of skeletal muscle microvascular reactivity. Previous studies using NIRS-VOT have been shown to be able to detect impairments in microvascular function in high-risk cardiovascular disease populations, such as older individuals. It has been demonstrated that older individuals have slower reactive hyperemia compared with young individuals. Importantly, older individuals also show less desaturation during ischemia compared with young individuals. Based on these findings, it has been suggested that the slower reactive hyperemia observed in older individuals is explained by the lower desaturation during blood flow occlusion (reduced ischemic stimulus). This retrospective analysis compared reactive hyperemia in 36 young and 47 older tissue desaturation-matched individuals that underwent 5-min blood flow occlusion. Overall, we showed that older individuals have impaired reactive hyperemia compared with young when matching for the degree of desaturation and blood flow occlusion time. These findings provide evidence that lower tissue desaturation during ischemia is not a major determinant of impaired reactive hyperemia in older individuals.NEW & NOTEWORTHY Previous findings have suggested that aging-related impairment in skeletal muscle reactive hyperemia is majorly influenced by a lower degree of tissue desaturation during ischemia in older individuals compared with young individuals. In a retrospective analysis including 83 tissue desaturation-matched individuals, we show that the degree of tissue desaturation is not a major determinant of aging-related impairments in reactive hyperemia.
Collapse
Affiliation(s)
| | - Rogerio Nogueira Soares
- Division of Kinesiology, Health, and Sports Studies, Wayne State University, Detroit, Michigan, United States
| |
Collapse
|
2
|
Jeskanen T, Ylinen V, Valtonen RIP, Tulppo MP. Reproducibility and sex differences in muscle oxygenation during brachial artery occlusion in healthy participants. Clin Physiol Funct Imaging 2024; 44:388-395. [PMID: 38666417 DOI: 10.1111/cpf.12886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/26/2024] [Accepted: 04/15/2024] [Indexed: 08/07/2024]
Abstract
SIGNIFICANCE Near-infrared spectroscopy (NIRS) measurement is a widely used technique to measure muscle oxygenation. A knowledge of the reproducibility of NIRS measurements is essential for the correct interpretation of data. AIM Our aim was to test the reproducibility and sex differences of NIRS measurements during brachial artery occlusion in healthy participants. APPROACH An NIRS device was used to measure muscle oxygenation and microvascular function during a 5 min brachial occlusion. Muscle oxygen consumption (mVO2) and tissue saturation index (TSI%) were used. The occlusion test was performed three times on separate days for males (n = 13, 28 ± 8 years) and females (n = 13, 29 ± 7 years). RESULTS During the occlusion phase, the reproducibility of mVO2 was excellent (intraclass correlation; ICC = 0.90). During the reperfusion phase, the maximal change in TSI% revealed the best reproducibility (ICC = 0.77). There were no sex differences in reproducibility. Male participants had higher muscle oxygenation during occlusion (mVO2, 0.054 ± 0.010 vs. 0.038 ± 0.012 mLO2/min/100 g, p = 0.001, male and female, respectively). There were no sex differences during the reperfusion phase. CONCLUSION The reproducibility of NIRS to measure muscle oxygenation and microvascular function during circulation occlusion and reperfusion is good to excellent. Muscle oxygen capacity measured during occlusion is higher in males compared to females, and there are no sex differences in microvascular function during the reperfusion phase.
Collapse
Affiliation(s)
- Tommi Jeskanen
- Research Unit of Biomedicine and Internal Medicine, University of Oulu, Oulu, Finland
- Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Venla Ylinen
- Research Unit of Biomedicine and Internal Medicine, University of Oulu, Oulu, Finland
- Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Rasmus I P Valtonen
- Research Unit of Biomedicine and Internal Medicine, University of Oulu, Oulu, Finland
- Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Mikko P Tulppo
- Research Unit of Biomedicine and Internal Medicine, University of Oulu, Oulu, Finland
- Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| |
Collapse
|
3
|
Hyngstrom AS, Nguyen JN, Gutterman DD, Schmit BD, Klevenow EA, Durand MJ. Noninvasive estimation of skeletal muscle oxygen consumption rate and microvascular reactivity in chronic stroke survivors using near-infrared spectroscopy. J Appl Physiol (1985) 2024; 137:23-31. [PMID: 38601999 DOI: 10.1152/japplphysiol.00093.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024] Open
Abstract
Understanding post-stroke changes in skeletal muscle oxidative metabolism and microvascular reactivity could help create therapeutic targets that optimize rehabilitative interventions. Due to disuse atrophy, we hypothesized that basal muscle oxygen consumption rate and microvascular endothelial function would be impaired in the tibialis anterior (TA) muscle of the affected leg of chronic stroke survivors compared with the nonaffected leg and versus matched controls. Fifteen chronic stroke survivors (10 females) and 15 matched controls (9 females) completed this study. A near-infrared spectroscopy oximeter measured tissue oxygen saturation (StO2) of the TA in both legs of stroke survivors and the dominant leg of controls. A cuff was placed around the thigh and inflated to 225 mmHg for 5 min while StO2 was continuously measured. The rate of change in StO2 was calculated during cuff occlusion and immediately post-cuff release. The rate of oxygen desaturation was similar between the legs of the stroke survivors (paretic -0.12 ± 0.04%·s-1 vs. nonparetic -0.16 ± 011%·s-1; P = 0.49), but the paretic leg had a reduced desaturation rate versus controls (-0.25 ± 0.18%·s-1; P = 0.007 vs. paretic leg). After cuff release, there was a greater oxygen resaturation rate in the nonparetic leg compared with the paretic leg (3.13 ± 2.08%·s-1 vs. 1.60 ± 1.11%·s-1, respectively; P = 0.01). The control leg had a similar resaturation rate versus the nonparetic leg (control = 3.41 ± 1.79%·s-1; P = 0.69) but was greater than the paretic leg (P = 0.003). The TA in the paretic leg had an impaired muscle oxygen consumption rate and reduced microvascular endothelial function compared with controls.NEW & NOTEWORTHY Secondary consequences of stroke are not well described. In this study, we show that basal muscle oxidative consumption and microvascular endothelial function are reduced in the paretic tibialis anterior muscle of chronic stroke survivors compared with matched controls using near-infrared spectroscopy and the vascular occlusion technique. There was a moderately strong correlation between microvascular endothelial function and paretic leg strength.
Collapse
Affiliation(s)
- Allison S Hyngstrom
- Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States
| | - Jennifer N Nguyen
- Department of Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - David D Gutterman
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Brian D Schmit
- Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Emilie A Klevenow
- Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States
| | - Matthew J Durand
- Department of Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| |
Collapse
|
4
|
Citherlet T, Raberin A, Manferdelli G, Mota GR, Millet GP. Age and sex differences in microvascular responses during reactive hyperaemia. Exp Physiol 2024; 109:804-811. [PMID: 38509637 PMCID: PMC11061625 DOI: 10.1113/ep091652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 02/26/2024] [Indexed: 03/22/2024]
Abstract
Microvascular impairments are typical of several cardiovascular diseases. Near-infrared spectroscopy (NIRS) combined with a vascular occlusion test provides non-invasive insights into microvascular responses by monitoring skeletal muscle oxygenation changes during reactive hyperaemia. Despite increasing interest in the effects of sex and ageing on microvascular responses, evidence remains inconsistent. Therefore, the present study aimed to investigate the effects of sex and age on microvascular responsiveness. Twenty-seven participants (seven young men and seven young women; seven older men and six older women; aged 26 ± 1, 26 ± 4, 67 ± 3 and 69 ± 4 years, respectively) completed a vascular occlusion test consisting of 5 min of arterial occlusion followed by 5 min reperfusion. Oxygenation changes in the vastus lateralis were monitored by near-infrared spectroscopy. The findings revealed that both women (referring to young and older women) and older participants (referring to both men and women) exhibited lower microvascular responsiveness. Notably, both women and older participants demonstrated reduced desaturation (-38% and -59%, respectively) and reperfusion rates (-24% and -40%, respectively) along with a narrower range of tissue oxygenation (-39% and -39%, respectively) and higher minimal tissue oxygenation levels (+34% and +21%, respectively). Women additionally displayed higher values in resting (+12%) and time-to-peak (+15%) tissue oxygenation levels. In conclusion, this study confirmed decreased microvascular responses in women and older individuals. These results emphasize the importance of considering sex and age when studying microvascular responses. Further research is needed to uncover the underlying mechanisms and clinical relevance of these findings, enabling the development of tailored strategies for preserving vascular health in diverse populations.
Collapse
Affiliation(s)
- Tom Citherlet
- Institute of Sport SciencesUniversity of LausanneLausanneSwitzerland
| | - Antoine Raberin
- Institute of Sport SciencesUniversity of LausanneLausanneSwitzerland
| | | | - Gustavo R. Mota
- Institute of Sport SciencesUniversity of LausanneLausanneSwitzerland
- Institute of Health SciencesFederal University of Triangulo MineiroUberabaBrazil
| | | |
Collapse
|
5
|
Traylor MK, Batman GB, Sears KN, Ransom KV, Hammer SM, Keller JL. Sex-specific microvascular and hemodynamic responses to passive limb heating in young adults. Microcirculation 2024; 31:e12848. [PMID: 38281244 DOI: 10.1111/micc.12848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/20/2023] [Accepted: 01/17/2024] [Indexed: 01/30/2024]
Abstract
OBJECTIVE We examined sex-specific microvascular reactivity and hemodynamic responses under conditions of augmented resting blood flow induced by passive heating compared to normal blood flow. METHODS Thirty-eight adults (19 females) completed a vascular occlusion test (VOT) on two occasions preceded by rest with or without passive heating in a randomized, counterbalanced order. Skeletal muscle tissue oxygenation (StO2, %) was assessed with near-infrared spectroscopy (NIRS), and the rate of desaturation and resaturation as well as maximal StO2 (StO2max) and prolonged hypersaturation (area under the curve, StO2AUC) were quantified. Before the VOT, brachial artery blood flow (BABF), vascular conductance, and relative BABF (BABF normalized to forearm lean mass) were determined. Sex × condition ANOVAs were used. A p-value ≤.05 was considered statistically significant. RESULTS Twenty minutes of heating increased BABF compared to the control (102.9 ± 28.3 vs. 36.0 ± 20.9 mL min-1; p < .01). Males demonstrated greater BABF than females (91.9 ± 34.0 vs. 47.0 ± 19.1 mL min-1; p < .01). There was no sex difference in normalized BABF. There were no significant interactions for NIRS-VOT outcomes, but heat did increase the rate of desaturation (-0.140 ± 0.02 vs. -0.119 ± 0.03% s-1; p < .01), whereas regardless of condition, males exhibited greater rates of resaturation and StO2max than females. CONCLUSIONS These results suggest that blood flow is not the primary factor causing sex differences in NIRS-VOT outcomes.
Collapse
Affiliation(s)
- Miranda K Traylor
- Integrative Laboratory of Exercise and Applied Physiology (iLEAP), Department of Health, Kinesiology, and Sport, College of Education and Professional Studies, University of South Alabama, Mobile, Alabama, USA
| | - Genevieve B Batman
- Integrative Laboratory of Exercise and Applied Physiology (iLEAP), Department of Health, Kinesiology, and Sport, College of Education and Professional Studies, University of South Alabama, Mobile, Alabama, USA
| | - Kylie N Sears
- School of Kinesiology, Applied Health and Recreation, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Kyndall V Ransom
- Integrative Laboratory of Exercise and Applied Physiology (iLEAP), Department of Health, Kinesiology, and Sport, College of Education and Professional Studies, University of South Alabama, Mobile, Alabama, USA
- Chemistry Department, College of Arts and Science, University of South Alabama, Mobile, Alabama, USA
| | - Shane M Hammer
- School of Kinesiology, Applied Health and Recreation, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Joshua L Keller
- Integrative Laboratory of Exercise and Applied Physiology (iLEAP), Department of Health, Kinesiology, and Sport, College of Education and Professional Studies, University of South Alabama, Mobile, Alabama, USA
- Department of Physiology & Cell Biology, College of Medicine, University of South Alabama, Mobile, Alabama, USA
| |
Collapse
|
6
|
Greaves LM, Zaleski KS, Matias AA, Gyampo AO, Giuriato G, Lynch M, Lora B, Tomasi T, Basso E, Finegan E, Schickler J, Venturelli M, DeBlauw JA, Shostak E, Blum OE, Ives SJ. Limb, sex, but not acute dietary capsaicin, modulate the near-infrared spectroscopy-vascular occlusion test estimate of muscle metabolism. Physiol Rep 2024; 12:e15988. [PMID: 38537943 PMCID: PMC10972678 DOI: 10.14814/phy2.15988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 04/07/2024] Open
Abstract
The downward slope during the near-infrared spectroscopy (NIRS)-vascular occlusion test (NIRS-VOT) is purported as a simplified estimate of metabolism. Whether or not the NIRS-VOT exhibits sex- or limb-specificity or may be acutely altered remains to be elucidated. Thus, we investigated if there is limb- or sex specificity in tissue desaturation rates (DeO2) during a NIRS-VOT, and if acute dietary capsaicin may alter this estimate of muscle metabolism. Young healthy men (n = 25, 21 ± 4 years) and women (n = 20, 20 ± 1 years) ingested either placebo or capsaicin, in a counterbalanced, single-blind, crossover design after which a simplified NIRS-VOT was conducted to determine the DeO2 (%/s), as an estimate of oxidative muscle metabolism, in both the forearm (flexors) and thigh (vastus lateralis). There was a significant limb effect with the quadriceps having a greater DeO2 than the forearm (-2.31 ± 1.34 vs. -1.78 ± 1.22%/s, p = 0.007, ηp 2 = 0.19). There was a significant effect of sex on DeO2 (p = 0.005, ηp 2 = 0.203) with men exhibiting a lesser DeO2 than women (-1.73 ± 1.03 vs. -2.36 ± 1.32%/s, respectively). This manifested in significant interactions of limb*capsaicin (p = 0.001, ηp 2 = 0.26) as well as limb*capsaicin*sex on DeO2 (p = 0.013, ηp 2 = 0.16) being observed. Capsaicin does not clearly alter O2-dependent muscle metabolism, but there was apparent limb and sex specificity, interacting with capsaicin in this NIRS-derived assessment.
Collapse
Affiliation(s)
- Lauren M. Greaves
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Kendall S. Zaleski
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Alexs A. Matias
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
- Department of Kinesiology and Applied PhysiologyUniversity of DelawareNewarkDelawareUSA
| | - Abena O. Gyampo
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Gaia Giuriato
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
- Department of Neurosciences, Biomedicine and Movement SciencesUniversity of VeronaVeronaItaly
| | - Meaghan Lynch
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Brian Lora
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Tawn Tomasi
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Emma Basso
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Emma Finegan
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Jack Schickler
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Massimo Venturelli
- Department of Neurosciences, Biomedicine and Movement SciencesUniversity of VeronaVeronaItaly
| | - Justin A. DeBlauw
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Elena Shostak
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Oliver E. Blum
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| | - Stephen J. Ives
- Health and Human Physiological Sciences DepartmentSkidmore CollegeSaratoga SpringsNew YorkUSA
| |
Collapse
|
7
|
Koutlas A, Smilios I, Kokkinou EM, Myrkos A, Kounoupis A, Dipla K, Zafeiridis A. NIRS-Derived Muscle-Deoxygenation and Microvascular Reactivity During Occlusion-Reperfusion at Rest Are Associated With Whole-Body Aerobic Fitness. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2024; 95:127-139. [PMID: 36689603 DOI: 10.1080/02701367.2022.2159309] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Purpose: Near-infrared spectroscopy (NIRS) indices during arterial occlusion-reperfusion maneuver have been used to examine the muscle's oxidative metabolism and microvascular function-important determinants of whole-body aerobic-fitness. The association of NIRS-derived parameters with whole-body VO2max was previously examined using a method requiring exercise (or electrical stimulation) followed by multiple arterial occlusions. We examined whether NIRS-derived indices of muscle deoxygenation and microvascular reactivity assessed during a single occlusion-reperfusion at rest are (a) associated with maximal/submaximal indices of whole-body aerobic-fitness and (b) could discriminate individuals with different VO2max. We, also, investigated which NIRS-parameter during occlusion-reperfusion correlates best with whole-body aerobic-fitness. Methods: Twenty-five young individuals performed an arterial occlusion-reperfusion at rest. Changes in oxygenated- and deoxygenated-hemoglobin (O2Hb and HHb, respectively) in vastus-lateralis were monitored; adipose tissue thickness (ATT) at NIRS-application was assessed. Participants also underwent a maximal incremental exercise test for VO2max, maximal aerobic velocity (MAV), and ventilatory-thresholds (VTs) assessments. Results: The HHbslope and HHbmagnitude of increase (occlusion-phase) and O2Hbmagnitude of increase (reperfusion-phase) were strongly correlated with VO2max (r = .695-.763, p < .001) and moderately with MAV (r = .468-.530; p < .05). O2Hbmagnitude was moderately correlated with VTs (r = .399-.414; p < .05). After controlling for ATT, the correlations remained significant for VO2max (r = .672-.704; p < .001) and MAV (r = .407; p < .05). Individuals in the high percentiles after median and tritile splits for HHbslope and O2Hbmagnitude had significantly greater VO2max vs. those in low percentiles (p < .01-.05). The HHbslope during occlusion was the best predictor of VO2max. Conclusion: NIRS-derived muscle deoxygenation/reoxygenation indices during a single arterial occlusion-reperfusion maneuver are strongly associated with whole-body maximal indices of aerobic-fitness (VO2max, MAV) and may discriminate individuals with different VO2max.
Collapse
|
8
|
Macedo ACP, Bock PM, Saffi MAL, Madalosso MM, Lago PD, Casali KR, Schaan BD. Neuromuscular electrical stimulation changes glucose, but not its variability in type 2 diabetes: a randomized clinical trial. AN ACAD BRAS CIENC 2024; 96:e20220282. [PMID: 38359288 DOI: 10.1590/0001-3765202320220282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/09/2023] [Indexed: 02/17/2024] Open
Abstract
Neuromuscular electrical stimulation (NMES) can be an alternative to conventional exercising. This randomized clinical trial evaluated the effect of NMES in type 2 diabetes patients. Twenty-eight individuals with type 2 diabetes were assigned to NMES (n=14) or NMES-placebo (n=14) applied to knee extensor muscles for 60 minutes. Glucose variability, microvascular function and endothelial function were evaluated through continuous glucose monitoring system, near infrared spectroscopy and flow-mediated dilatation, respectively. Glucose levels (mg/dl) decreased 2h (184 ± 11 vs 223 ±15), 3h (179 ± 12 vs 219 ±14) and 4h (177 ± 12 vs 212 ±12) after NMES, in comparison to NMES-placebo. No differences in glucose variability were found: coefficient of variation (%) at 0-6h (11.4±1.3 vs 11.4±1.2), 6-12h (9.8±1.0 vs 11.6±1.6), 12-18h (15.5±2.0 vs 11.4±2.1), 18-24h (12.8±2.3 vs 10.0±1.6); standard deviation (mg/dl) at 0-6h (21.6±2 vs 24.6±3.5), 6-12h (19.5±1.8 vs 20.3±2.8), 12-18h (29.9±3.5 vs 21.3±2.8),18-24h (22.8±4.1 vs 16.6±2.0) and mean amplitude of glycemic excursions (mg/dl) 54.9±25.0 vs 70.3±35.7. Endothelial and microvascular functions did not change. In conclusion, one acute NMES session was strong enough to trigger glucose reduction in individuals with type 2 DM, but it failed to induce any significant change in glucose variability, endothelial and microvascular functions.
Collapse
Affiliation(s)
- Aline C P Macedo
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Medicina Interna, Rua Ramiro Barcelos, 2400, 90035-903 Porto Alegre, RS, Brazil
- Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Clínica, Laboratório de Atividade Física, Diabetes e Doença Cardiovascular (LADD), Rua Ramiro Barcelos, 2350, 90035-903 Porto Alegre, RS, Brazil
| | - Patricia M Bock
- Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Clínica, Laboratório de Atividade Física, Diabetes e Doença Cardiovascular (LADD), Rua Ramiro Barcelos, 2350, 90035-903 Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande, Avenida Itália, Km 8, 96203-900 Rio Grande, RS, Brazil
| | - Marco Aurélio L Saffi
- Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Clínica, Laboratório de Atividade Física, Diabetes e Doença Cardiovascular (LADD), Rua Ramiro Barcelos, 2350, 90035-903 Porto Alegre, RS, Brazil
| | - Mariana M Madalosso
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Medicina Interna, Rua Ramiro Barcelos, 2400, 90035-903 Porto Alegre, RS, Brazil
| | - Pedro Dal Lago
- Universidade Federal de Ciências da Saúde de Porto Alegre, Departamento de Fisioterapia, Rua Sarmento Leite, 245, 90050-170 Porto Alegre, RS, Brazil
| | - Karina R Casali
- Universidade Federal de São Paulo, Departmento de Ciência e Tecnologia, Rua Talim, 330, 12231-280 São José dos Campos, SP, Brazil
| | - Beatriz D Schaan
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Medicina Interna, Rua Ramiro Barcelos, 2400, 90035-903 Porto Alegre, RS, Brazil
- Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Clínica, Laboratório de Atividade Física, Diabetes e Doença Cardiovascular (LADD), Rua Ramiro Barcelos, 2350, 90035-903 Porto Alegre, RS, Brazil
| |
Collapse
|
9
|
Chatlaong MA, Stanford DM, Miller WM, Davidson CJ, Jessee MB. Post-occlusive reactive hyperemia in habituated caffeine users: Effects of abstaining versus consuming typical doses. Clin Hemorheol Microcirc 2024; 87:101-113. [PMID: 38250766 DOI: 10.3233/ch-232036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
BACKGROUND Post-occlusive reactive hyperemia (PORH) typically requires caffeine abstinence. For habitual users, it is unknown if abstinence affects PORH. OBJECTIVE Compare PORH after habitual users consume or abstain from caffeine. METHODS On separate visits (within-subject), PORH was measured in 30 participants without abstinence from typical caffeine doses (CAFF) and with abstinence (ABS). Measurements included baseline and peak hyperemic velocity, tissue saturation index slopes during ischemia (Slope 1) and following cuff deflation (Slope 2), resting arterial occlusion pressure (AOP), heart rate (HR), systolic (SBP), and diastolic (DBP) blood pressure. All variables were compared using Bayesian paired t-tests. BF10 = likelihood of alternative vs null. Results are mean±SD. RESULTS Comparing baseline velocity (cm/s) between CAFF (9.3±4.8) and ABS (7.5±4.9) yielded anecdotal evidence (BF10 = 1.0). Peak hyperemic velocity (cm/s) was similar (CAFF = 77.3±16.7; ABS = 77.6±19.0, BF10 = 0.20). For slopes (TSI% /s), CAFF Slope 1 = -0.11±0.04 and Slope 2 = 1.9±0.46 were similar (both BF10≤0.20) to ABS Slope 1 = -0.12±0.03 and Slope 2 = 1.8±0.42. SBP and DBP (mmHg) were both similar (CAFF SBP = 116.0±9.8, DBP = 69.6±5.8; ABS SBP = 115.5±10.7, DBP = 69.5±5.4; both BF10≤0.22). Comparing AOP (mmHg) (CAFF = 146.6±15.0; ABS = 143.0±16.4) yielded anecdotal evidence (BF10 = 0.46). HR (bpm) was similar (CAFF = 66.5±12.3; ABS = 66.9±13.0; BF10 = 0.20). CONCLUSIONS In habitual users, consuming or abstaining from typical caffeine doses does not appear to affect post-occlusive reactive hyperemia.
Collapse
Affiliation(s)
- Matthew A Chatlaong
- Department of Health, Exercise Science, and Recreation Management, Applied Human Health and Physical Function Laboratory, University of Mississippi, Oxford, MS, USA
| | - Daphney M Stanford
- Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA, USA
| | - William M Miller
- University of Evansville, School of Health Sciences, Evansville, IN, USA
| | - Chance J Davidson
- Department of Health, Exercise Science, and Recreation Management, Applied Human Health and Physical Function Laboratory, University of Mississippi, Oxford, MS, USA
| | - Matthew B Jessee
- Department of Health, Exercise Science, and Recreation Management, Applied Human Health and Physical Function Laboratory, University of Mississippi, Oxford, MS, USA
| |
Collapse
|
10
|
Caldwell JT, Fenn SA, Bekkedal LM, Dodge C, Muller-Delp J. Preexercise intermittent passive stretching and vascular function after treadmill exercise. J Appl Physiol (1985) 2023; 135:786-794. [PMID: 37589056 DOI: 10.1152/japplphysiol.00427.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/27/2023] [Accepted: 08/16/2023] [Indexed: 08/18/2023] Open
Abstract
Acute aerobic exercise stress is associated with decreased endothelial function that may increase the likelihood of an acute cardiovascular event. Passive stretch (PS) elicits improvements in vascular function, but whether PS can be performed before exercise to prevent declines in vascular function remains unknown. This strategy could be directly applicable in populations that may not be able to perform dynamic exercise. We hypothesized that preexercise PS would provide better vascular resilience after treadmill exercise. Sixteen healthy college-aged males and females participated in a single laboratory visit and underwent testing to assess micro- and macrovascular function. Participants were randomized into either PS group or sham control group. Intermittent calf PS was performed by having the foot in a splinting device for a 5-min stretch and 5-min relaxation, repeated four times. Then, a staged V̇o2 peak test was performed and 65% V̇o2 peak calculated for subjects to run at for 30 min. Near-infrared spectroscopy-derived microvascular responsiveness was preserved with the PS group [(pre: 0.53 ± 0.009%/s) (post: 0.56 ± 0.012%/s; P = 0.55)]. However, there was a significant reduction in the sham control group [(pre: 0.67 ± 0.010%/s) (post: 0.51 ± 0.007%/s; P = 0.05)] after treadmill exercise. Flow-mediated vasodilation (FMD) of the popliteal artery showed similar responses. In the PS group, FMD [(pre: 7.23 ± 0.74%) (post: 5.86 ± 1.01%; P = 0.27)] did not significantly decline after exercise. In the sham control group, FMD [(pre: 8.69 ± 0.72%) (post: 5.24 ± 1.24%; P < 0.001)] was significantly reduced after treadmill exercise. Vascular function may be more resilient if intermittent PS is performed before moderate-intensity exercise and, importantly, can be performed by most individuals.NEW & NOTEWORTHY We demonstrate for the first time that popliteal artery and gastrocnemius microvascular responsiveness after acute aerobic exercise are reduced. The decline in vascular function was mitigated in those who performed intermittent passive stretching before the exercise bouts. Collectively, these findings suggest that intermittent passive stretching is a novel method to increase vascular resiliency before aerobic activity.
Collapse
Affiliation(s)
- Jacob T Caldwell
- Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin, United States
| | - Sarah A Fenn
- Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin, United States
| | - Lukas M Bekkedal
- Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin, United States
| | - Christopher Dodge
- Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin, United States
| | - Judy Muller-Delp
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, United States
| |
Collapse
|
11
|
Kranen SH, Oliveira RS, Bond B, Williams CA, Barker AR. The utility of the reperfusion rate of tissue oxygen saturation as a measure of vascular endothelial function in adolescents: reliability, validity and sensitivity. Front Physiol 2023; 14:1163474. [PMID: 37781222 PMCID: PMC10533909 DOI: 10.3389/fphys.2023.1163474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/17/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction: The near-infrared spectroscopy (NIRS)-derived reperfusion rate of tissue oxygen saturation (slope 2 StO2) may provide a surrogate measure of vascular function, however, this has yet to be examined in a paediatric population. This study investigated in adolescents: 1) the between-day reliability of NIRS-derived measurements; 2) the relationship between slope 2 StO2 and macro- (flow-mediated dilation, FMD) and microvascular (peak reactive hyperaemia, PRH) function; and 3) the effect of high-intensity interval exercise (HIIE) on slope 2 StO2, FMD, and PRH. Methods: Nineteen boys (13.3 ± 0.5 y) visited the laboratory on two occasions, separated by ∼ 1 week. On visit 1, participants underwent simultaneous assessment of brachial artery FMD and slope 2 StO2 and PRH on the internal face of the forearm. On visit 2, participants completed a bout of HIIE with slope 2 StO2, FMD and PRH measured pre-, immediately post- and 1.5 h post-exercise. Results: Slope 2 StO2 showed no mean bias (p = 0.18) and an intraclass correlation coefficient of 0.67 (p = 0.003) between visits. No significant correlation between slope 2 StO2 and FMD or PRH was observed on visit 1 (r = -0.04, p = 0.89 and r = -0.30, p = 0.23, respectively) or visit 2 pre-exercise (r = -0.28, p = 0.25 and r = -0.31, p = 0.20, respectively). Compared to pre-exercise, FMD decreased immediately post-exercise (p < 0.001) and then increased 1.5 h post-exercise (p < 0.001). No significant change was detected for slope 2 StO2 (p = 0.30) or PRH (p = 0.55) following HIIE. Conclusion: In adolescents, slope 2 StO2 can be measured reliably, however, it is not correlated with FMD or PRH and does not follow the acute time course of changes in FMD post-exercise. Hence, the use of slope 2 StO2 as a surrogate measure of vascular function in youth must be refuted.
Collapse
Affiliation(s)
- Sascha H. Kranen
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Ricardo S. Oliveira
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Bert Bond
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Craig A. Williams
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Alan R. Barker
- Children’s Health and Exercise Research Centre, Public Health and Sports Sciences, University of Exeter Medical School, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| |
Collapse
|
12
|
Theurot D, Dupuy O, Louis J, Douzi W, Morin R, Arc-Chagnaud C, Dugué B. Partial-body cryostimulation does not impact peripheral microvascular responsiveness but reduces muscular metabolic O 2 consumption (mV˙O 2) at rest. Cryobiology 2023; 112:104561. [PMID: 37499963 DOI: 10.1016/j.cryobiol.2023.104561] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 07/29/2023]
Abstract
This study aimed to investigate the effect of partial-body cryostimulation (PBC) on microvascular responsiveness and muscular metabolic O2 consumption rate (mV˙O2). Twenty healthy young adults (ten males and ten females) underwent a post-occlusive reactive hyperemia (PORH) test at the flexor digitorum superficialis area before and after a 3-min PBC session and a 3-min control session. Using near-infrared spectroscopy, occlusion and reperfusion slopes were calculated: oxyhemoglobin ([HbO2]) decrease rate ([HbO2] slope 1), deoxyhaemoglobin ([HHb]) increase rate ([HHb] slope 1), [HbO2] increase rate ([HbO2] slope 2), and [HHb] increase rate ([HHb] slope 2. Using HbO2 kinetics during the occlusion, mV˙O2 was also calculated to characterize myocytes' metabolic O2 consumption. HbO2 slope 1 value was lower after PBC than before PBC (-0.15 ± 0.08 vs -0.24 ± 0.11 s-1; respectively; P < 0.05) in male participants only. A lower [HHb] slope 1 was also observed after PBC compared to before PBC (0.18 ± 0.10 vs 0.24 ± 0.16 s-1; P < 0.05) with no interaction for sex categories. mV˙O2 was significantly lower after PBC than before (pre values 14.75 ± 3.94 vs 18.47 ± 5.73 μMO2Hb.s-1; respectively; P < 0.01) with no interaction between sex categories. No changes in the calculated slope 2 were observed. These findings suggest that a single session of PBC reduces the muscular metabolic O2 needs at rest; however, it does not alter the vascular ability to provide O2 to the myocytes.
Collapse
Affiliation(s)
- Dimitri Theurot
- University of Poitiers, Laboratory MOVE (UR 20296), Faculty of Sport Sciences, Poitiers, France.
| | - Olivier Dupuy
- University of Poitiers, Laboratory MOVE (UR 20296), Faculty of Sport Sciences, Poitiers, France; Ecole de Kinésiologie et des Sciences de l'Activité Physique (EKSAP), Faculté de Medicine, Université de Montreal, Canada
| | - Julien Louis
- Research Institute for Sport and Exercise Sciences (RISES), Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
| | - Wafa Douzi
- University of Poitiers, Laboratory MOVE (UR 20296), Faculty of Sport Sciences, Poitiers, France
| | - Renée Morin
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Coralie Arc-Chagnaud
- University of Poitiers, Laboratory MOVE (UR 20296), Faculty of Sport Sciences, Poitiers, France
| | - Benoit Dugué
- University of Poitiers, Laboratory MOVE (UR 20296), Faculty of Sport Sciences, Poitiers, France
| |
Collapse
|
13
|
Ihsan M, Labidi M, Racinais S. Skeletal muscle oxidative adaptations following localized heat therapy. Eur J Appl Physiol 2023; 123:1629-1635. [PMID: 36952087 PMCID: PMC10363048 DOI: 10.1007/s00421-023-05159-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/10/2023] [Indexed: 03/24/2023]
Abstract
Repeated heat treatment has been shown to induce oxidative adaptations in cell cultures and rodents, but similar work within human models is scarce. This study investigated the effects of 6 weeks of localized heat therapy on near-infrared spectroscopy-(NIRS) derived indices of muscle oxidative and microvascular function. Twelve physically active participants (8 males and 4 females, age: 34.9 ± 5.9 years, stature: 175 ± 7 cm, body mass: 76.7 ± 13.3 kg) undertook a 6-week intervention, where adhesive heat pads were applied for 8 h/day, 5 days/week, on one calf of each participant, while the contralateral leg acted as control. Prior to and following the intervention, the microvascular function was assessed using NIRS-based methods, where 5 min of popliteal artery occlusion was applied, and the reperfusion (i.e., re-saturation rate, re-saturation amplitude, and hyperemic response) was monitored for 2 min upon release. Participants also performed a 1-min isometric contraction of the plantar flexors (30% maximal voluntary contraction), following which a further 2 min interval was undertaken for the assessment of recovery kinetics. A 20-min time interval was allowed before the assessment protocol was repeated on the contralateral leg. Repeated localized heating of the gastrocnemius did not influence any of the NIRS-derive indices of microvascular or oxidative function (p > 0.05) following 6 weeks of treatment. Our findings indicate that localized heating via the use of adhesive heat pads may not be a potent stimulus for muscle adaptations in physically active humans.
Collapse
Affiliation(s)
- Mohammed Ihsan
- Research and Scientific Support, Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar.
| | - Mariem Labidi
- Research and Scientific Support, Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar
- Education Department, Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar
- Faculty of Sport Sciences and Physical Education, CETAPS, University of Rouen, Mont-Saint-Aignan, France
| | - Sebastien Racinais
- Research and Scientific Support, Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar
| |
Collapse
|
14
|
Manferdelli G, Narang BJ, Pialoux V, Giardini G, Debevec T, Millet GP. Microvascular and oxidative stress responses to acute high-altitude exposure in prematurely born adults. Sci Rep 2023; 13:6860. [PMID: 37100885 PMCID: PMC10133287 DOI: 10.1038/s41598-023-34038-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/23/2023] [Indexed: 04/28/2023] Open
Abstract
Premature birth is associated with endothelial and mitochondrial dysfunction, and chronic oxidative stress, which might impair the physiological responses to acute altitude exposure. We assessed peripheral and oxidative stress responses to acute high-altitude exposure in preterm adults compared to term born controls. Post-occlusive skeletal muscle microvascular reactivity and oxidative capacity from the muscle oxygen consumption recovery rate constant (k) were determined by Near-Infrared Spectroscopy in the vastus lateralis of seventeen preterm and seventeen term born adults. Measurements were performed at sea-level and within 1 h of arrival at high-altitude (3375 m). Plasma markers of pro/antioxidant balance were assessed in both conditions. Upon acute altitude exposure, compared to sea-level, preterm participants exhibited a lower reperfusion rate (7 ± 31% vs. 30 ± 30%, p = 0.046) at microvascular level, but higher k (6 ± 32% vs. -15 ± 21%, p = 0.039), than their term born peers. The altitude-induced increases in plasma advanced oxidation protein products and catalase were higher (35 ± 61% vs. -13 ± 48% and 67 ± 64% vs. 15 ± 61%, p = 0.034 and p = 0.010, respectively) and in xanthine oxidase were lower (29 ± 82% vs. 159 ± 162%, p = 0.030) in preterm compared to term born adults. In conclusion, the blunted microvascular responsiveness, larger increases in oxidative stress and skeletal muscle oxidative capacity may compromise altitude acclimatization in healthy adults born preterm.
Collapse
Affiliation(s)
- Giorgio Manferdelli
- Institute of Sport Sciences (ISSUL), University of Lausanne, Synathlon, 1015, Lausanne, Switzerland.
| | - Benjamin J Narang
- Department of Automatics, Biocybernetics and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
- Institute of Biostatistics and Medical Informatics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Vincent Pialoux
- Laboratoire Interuniversitaire de Biologie de La Motricité UR 7424, Faculté de Médecine Rockefeller, Univ Lyon, Université Claude Bernard Lyon 1, 69008, Lyon, France
- Institut Universitaire de France, Paris, France
| | - Guido Giardini
- Mountain Medicine and Neurology Centre, Valle D'Aosta Regional Hospital, Aosta, Italy
| | - Tadej Debevec
- Department of Automatics, Biocybernetics and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Grégoire P Millet
- Institute of Sport Sciences (ISSUL), University of Lausanne, Synathlon, 1015, Lausanne, Switzerland
| |
Collapse
|
15
|
McGranahan MJ, Kibildis SW, McCully KK, O'Connor PJ. Evaluation of inter-rater and test-retest reliability for near-infrared spectroscopy reactive hyperemia measures. Microvasc Res 2023; 148:104532. [PMID: 36963482 DOI: 10.1016/j.mvr.2023.104532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/26/2023]
Abstract
BACKGROUND Near-infrared spectroscopy (NIRS) is a non-invasive tool used to measure blood flow in peripheral tissues. More information on inter-rater agreement and test-retest reliability of NIRS-based reperfusion assessments is needed. PURPOSE To assess inter-rater agreement for NIRS based data analysis, and evaluate the measurement's reliability across days. METHODS On three separate days (average days between visits 1 and 3: 19.4 ± 6.9 days), participants' (N = 15 males, 22 ± 2 yr.) post-occlusion reactive hyperemia (PORH) was measured in the left gastrocnemius muscle using Continuous-Wave NIRS (CW-NIRS). A blood pressure cuff was placed proximal to the knee and inflated to occlude lower leg blood flow for 5 min. The following CW-NIRS parameters were selected: (1) percent saturation in HbO2 (StO2%) at baseline; (2) the O2Hb range used to normalize the NIRS signal; (3) the time for the O2Hb signal to reach 50 % peak post-occlusion hyperemia (T1/2), and (4) the post peak hyperemic O2Hb recovery slope (O2REC-SLP). Absolute agreement between the two analysts was calculated using two-way random effects Intraclass Correlation Coefficients (ICC2,1). Consistency between analysts and across days was calculated using two-way mixed models (ICC3,1). Mean and 95 % confidence intervals (CI) of ICCs are reported. Coefficient of variation (CV) and standard error of the measurement (SEM) are reported. RESULTS The ICC2,1 data indicated "adequate" to "excellent" absolute agreement between the two NIRS analysts. ICC2,3 data indicated "adequate" to "good" reliability across visits. The CV and SEM for rater 1 and rater 2 across visit were StO2 (CV: 3.79 % ± 2.71 % and 4.50 % ± 2.37 %; SEM: 3.42 and 3.82), O2Hb range (CV: 10.50 ± 5.93 and 12.79 ± 12.41; SEM: 3.26 and 4.71), T1/2 (CV: 11.15 % ± 5.52 % and 10.96 % ± 4.50; SEM: 1.22 and 1.11), and O2REC-SLP (CV: 19.49 % ± 9.99 % and 18.45 % ± 9.48 %; SEM: 0.04 and 0.04). CONCLUSION It is concluded that NIRS parameters assessed show adequate reliability between analysts and across three visits. It is recommended, when feasible and because of the absence of 100 % reliability, that investigators employ more than one rater for scoring at least a portion of the data across each trial in a study's control condition in order to have the ability to estimate the magnitude of error attributable to imperfect reliability.
Collapse
Affiliation(s)
- Melissa J McGranahan
- University of Georgia, Department of Kinesiology, Athens, GA 30602-6554, United States of America.
| | - Samuel W Kibildis
- University of North Carolina at Greensboro, Department of Kinesiology, Greensboro, NC, United States of America
| | - Kevin K McCully
- University of Georgia, Department of Kinesiology, Athens, GA 30602-6554, United States of America
| | - Patrick J O'Connor
- University of Georgia, Department of Kinesiology, Athens, GA 30602-6554, United States of America
| |
Collapse
|
16
|
Cogan B, Pearson RC, Paton CM, Jenkins NT, Cooper JA. Pecan-enriched diet improves cholesterol profiles and enhances postprandial microvascular reactivity in older adults. Nutr Res 2023; 111:44-58. [PMID: 36822079 DOI: 10.1016/j.nutres.2023.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 02/04/2023]
Abstract
Pecan-enriched diets have been linked to improved lipid metabolism; however, the impact of pecans on vascular health has yet to be examined. We hypothesized that 4 weeks of a pecan-enriched diet would improve fasting and postprandial blood lipids and vascular function compared with a nut-free diet. In this randomized control study, 44 older adults (59 ± 6 years) consumed 68 g of pecans/d (pecan; n = 21) or avoided all nuts (control; n = 23) for 4 weeks. At pre- and post-diet visits, fasting and postprandial blood lipids, macrovascular (by flow-mediated dilation), and microvascular (tissue saturation index reactive hyperemia [RH] kinetics by continuous-wave near-infrared spectroscopy) function were assessed. From the pre- to post-diet visit, there were greater reductions in fasting total cholesterol (pecan: -14 ± 4.0 vs control: -0.2 ± 5.4 mg/dL; P = .04), low-density lipoprotein (LDL) cholesterol (pecan: -15 ± 3.7 vs control: +1.9 ± 4.4 mg/dL; P = .01), non-high-density lipoprotein cholesterol (pecan: -15 ± 3.6 vs control: -0.5 ± 4.8 mg/dL; P = .02), LDL particle number (pecan: -126 ± 51 vs control: +43 ± 42 nmol/L; P = .01), and LDL medium (pecan: -34 ± 13 vs control: +16 ± 11 nmol/L; P < .01), for pecan vs control. Further, postprandial triglyceride was suppressed for pecan (P = .01) compared with control (P = .78). Postprandial RH slope (P = .04) and RH time to half (P = .004) was different by group, driven by improvements in pecan vs control. However, fasting macro- and microvascular function was unaffected. Daily pecan consumption for 4 weeks improved fasting and postprandial blood lipids and microvascular reactivity in older adults. Because changes in microvascular function typically precipitate macrovascular changes, long-term pecan consumption may improve vascular health and reduce risk for cardiovascular events. This trial was registered at clinicaltrials.gov (NCT04385537).
Collapse
Affiliation(s)
- Betsy Cogan
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Regis C Pearson
- Department of Kinesiology, University of Georgia, Athens, GA, USA
| | - Chad M Paton
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA; Department of Food Science and Technology, University of Georgia, Athens, GA, USA
| | - Nathan T Jenkins
- Department of Kinesiology, University of Georgia, Athens, GA, USA
| | - Jamie A Cooper
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA.
| |
Collapse
|
17
|
Association between Femoral Artery Flow-Mediated Dilation and Muscle Oxygen Saturation Parameters in Healthy, Young Individuals. J Cardiovasc Dev Dis 2023; 10:jcdd10020063. [PMID: 36826559 PMCID: PMC9965810 DOI: 10.3390/jcdd10020063] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Flow-mediated dilation (FMD) and muscle oxygen saturation (StO2) are measurements utilized to assess macro- and microvascular function, respectively. Macro- and microvascular dysfunction may occur differently depending on the clinical condition. Since microvascular responsiveness can influence upstream conduit artery hemodynamics, the present study aimed to investigate whether a correlation between FMD and muscle StO2 parameters exists. Sixteen healthy, young individuals were enrolled in this study. Femoral artery FMD and tibial anterior muscle StO2 were evaluated by ultrasound and near-infrared spectroscopy, respectively. The FMD and muscle StO2 parameters were assessed by employing a vascular occlusion test (VOT). The oxygen resaturation rate was determined by calculating the upslope of StO2 immediately after occlusion and the magnitude of reperfusion as the difference between the highest and lowest StO2 value achieved during the reperfusion phase. The oxygen desaturation rate and the magnitude of desaturation during the VOT were also evaluated. A significant correlation between the FMD and oxygen resaturation rate (r = 0.628; p = 0.009), magnitude of reperfusion (r = 0.568; p = 0.022), oxygen desaturation rate (r = -0.509; p = 0.044), and magnitude of desaturation (r = 0.644; p = 0.007) was observed. This study demonstrated a moderate association between the femoral artery FMD and tibial anterior StO2 parameters in young individuals.
Collapse
|
18
|
Rogers EM, Banks NF, Jenkins NDM. Metabolic and microvascular function assessed using near-infrared spectroscopy with vascular occlusion in women: age differences and reliability. Exp Physiol 2023; 108:123-134. [PMID: 36420592 PMCID: PMC10103776 DOI: 10.1113/ep090540] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/01/2022] [Indexed: 11/25/2022]
Abstract
NEW FINDINGS What is the central question of this study? Can the near-infrared spectroscopy with vascular occlusion test (NIRS-VOT) reliably measure skeletal muscle metabolic and microvascular function in women? What is the main finding and its importance? The NIRS-VOT can be used as a reliable technique for the assessment of skeletal muscle metabolism and microvascular function in women, with reliability being generally greater in younger women. These findings have important implications for the planning and development of future studies employing the NIRS-VOT in women, and provide insights into the effects of age on these parameters in women specifically. ABSTRACT We investigated the test-retest reliability of, and age-related differences in, markers of skeletal muscle metabolism and microvascular function derived from the near-infrared spectroscopy with vascular occlusion test (NIRS-VOT) in younger women (YW) and middle-aged and older women (MAOW). Seventeen YW (age 23 ± 4 years) and 17 MAOW (age 59 ± 8 years) completed this study. Participants completed identical experimental visits separated by ∼4 weeks during which the NIRS-VOT was used to quantify the occlusion slope, minimum and maximum tissue saturation, ischaemic index, reperfusion magnitude, the reperfusion and 10-s reperfusion slopes (slope 2 and slope 210-s ), time to max tissue saturation, and area under the reperfusion curve using the local tissue oxygen saturation signal. Except for slope 210-s (intraclass correlation coefficient (ICC) = 0.37; coefficient of variation (CV) = 31%), time to max tissue saturation (ICC = 0.21), and ischaemic index (ICC = 0.37) for MAOW, all of the NIRS variables demonstrated good to excellent relative reliability for the YW (ICCs = 0.74-0.86) and the MAOW (ICCs = 0.51-0.87), with CVs of 2-21% and 2-22%, respectively. The occlusion slope was significantly lower, indicating accelerated deoxygenation, while maximum tissue saturation, reperfusion magnitude, and ischaemic index were significantly higher in YW versus MAOW. No other group differences were found. In conclusion, our data support the use of the NIRS-VOT as a simple, reliable, non-invasive technique for the assessment of peripheral skeletal muscle metabolism and microvascular function in women, with the reliability being generally greater in YW versus MAOW. Further, our data suggest that ageing is associated with lower skeletal muscle metabolism and microvascular hyperaemic responsiveness in women.
Collapse
Affiliation(s)
- Emily M. Rogers
- Integrative Laboratory of Applied Physiology and Lifestyle MedicineUniversity of IowaIowa CityIAUSA
| | - Nile F. Banks
- Integrative Laboratory of Applied Physiology and Lifestyle MedicineUniversity of IowaIowa CityIAUSA
| | - Nathaniel D. M. Jenkins
- Integrative Laboratory of Applied Physiology and Lifestyle MedicineUniversity of IowaIowa CityIAUSA
- Abboud Cardiovascular Research CenterUniversity of IowaIowa CityIAUSA
| |
Collapse
|
19
|
Leitão R, de Oliveira GV, Rezende C, Volino-Souza M, Mesquita J, de Carvalho LL, Alvares TS. Improved microvascular reactivity after aged garlic extract intake is not mediated by hydrogen sulfide in older adults at risk for cardiovascular disease: a randomized clinical trial. Eur J Nutr 2022; 61:3357-3366. [PMID: 35505122 DOI: 10.1007/s00394-022-02895-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/12/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE This study aimed to investigate the effects of AGE on microvascular reactivity, systolic blood pressure (SBP), and diastolic blood pressure (DBP) in older individuals at high risk for cardiovascular disease (CVD). Urinary thiosulfate was also investigated as an indirect marker of endogenous hydrogen sulfide (H2S) synthesis. The study was conducted in a randomized, double-blind, crossover, and placebo-controlled way. METHODS Twenty-eight participants (14 male), 67 ± 6 years old with CVD risk factors, ingested 2.4 g of AGE or placebo (PLA). Near-infrared spectroscopy evaluated tissue oxygen saturation (StO2) during a vascular occlusion test (30 s baseline, 5 min occlusion, and 2 min reperfusion). The upslope of StO2 signal after cuff release was calculated to measure microvascular reactivity. Urinary thiosulfate levels were measured using a high-performance liquid chromatography system. RESULTS The upslope of StO2 was significantly faster after AGE (1.01 ± 0.37% s-1) intake compared to PLA (0.83 ± 0.35% s-1; P < 0.001; d = 0.50). Relative changes in Δ% SBP from pre- to post-AGE intake (- 5.17 ± 5.77%) was significantly different compared to Δ% PLA (0.32 ± 5.99%; P = 0.001; d = 0.93). No significant changes in urinary thiosulfate concentrations were observed between interventions. Moreover, no significant gender effect in any parameter assessed was found. CONCLUSION This study demonstrated that a single dose of AGE improved microvascular reactivity in older adults at risk of CVD despite such an effect was not linked with urinary thiosulfate levels. This trial was registered at clinicaltrials.gov as NCT04008693 (May 19, 2020).
Collapse
Affiliation(s)
- Renata Leitão
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil
| | - Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil
| | - Cristina Rezende
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil
| | - Mônica Volino-Souza
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil
| | - Jacilene Mesquita
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil
| | - Leandro Lara de Carvalho
- Laboratory of Catalysis and Synthesis of Bioactivity Substances, Federal University of Rio de Janeiro, Estrada do Imburo, s/n, Macaé, 27979-000, RJ, Brazil
| | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Food and Nutrition Institute, Federal University of Rio de Janeiro, Macaé Campus, Multidisciplinary Center UFRJ-Macaé, Estrada do Imburo, s/n, Macaé, RJ, 27979-000, Brazil.
| |
Collapse
|
20
|
Evaluating Arterial Blood Flow Limitation Using Muscle Oxygenation and Cycling Power. Clin J Sport Med 2022; 32:e268-e275. [PMID: 34009787 DOI: 10.1097/jsm.0000000000000942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To explore the combination of measuring muscle oxygenation with near-infrared spectroscopy (NIRS) and cycling power during provocative incremental exercise for the detection of iliac arterial blood flow limitation (IAFL) in an otherwise healthy, well-trained cyclist. DESIGN Case report and methodological pilot study. SETTING University research setting. PATIENT A well-trained amateur competitive male cyclist, aged 31 years, presenting with symptoms consistent with IAFL, but in whom diagnostic imaging was equivocal. INTERVENTIONS Four ramp incremental cycling tests performed on separate days to exercise intolerance, in a randomized order, in either typical race position (RP) or modified upright position (UP). MAIN OUTCOME A novel ratio of unilateral cycling power to NIRS-derived muscle oxygenation termed "power-deoxygenation factor" was measured during provocative incremental exercise and compared with other NIRS-derived measures of vascular responsiveness and performance outcomes across the 2 body position conditions. RESULTS The power-deoxygenation factor was able to show clinically important, progressive differences between the affected and unaffected limbs, coinciding with worsening performance impairments related to the body position that were not detected with traditional measures of vascular responsiveness taken after exercise. CONCLUSIONS This method was used to detect bilateral differences consistent with IAFL in a cyclist where traditional diagnostic criteria were equivocal, but subsequent intraoperative findings confirmed the diagnosis. A similar screening test could be performed noninvasively and without requiring specialized medical care. Future work should investigate the validity and sensitivity of this methodology to improve the ability to identify and monitor athletes with IAFL.
Collapse
|
21
|
Iannetta D, Inglis EC, Maturana FM, Spigolon G, Pogliaghi S, Murias JM. Transient speeding of V̇O2 kinetics following acute sessions of sprint interval training: Similar exercise dose but different outcomes in older and young adults. Exp Gerontol 2022; 164:111826. [DOI: 10.1016/j.exger.2022.111826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
|
22
|
Rech DA, da Silveira LS, Martins EM, de Oliveira Roque ABA, Althoff A, Maiorana AJ, Vieira AM, Karsten M. Frailty influences the vascular responsiveness of elderly individuals with chronic heart failure. Microvasc Res 2022; 141:104316. [PMID: 35038445 DOI: 10.1016/j.mvr.2022.104316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 12/23/2021] [Accepted: 01/03/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Frailty is highly prevalent in heart failure (HF) patients. HF is associated with oxidative stress and chronic inflammation, which impair oxygen use by skeletal muscles. Little is known about the influence of frailty on vascular responsiveness and tissue oxygenation. OBJECTIVE Analyze the influence of frailty on vascular responsiveness and muscle oxygenation in elderly individuals with and without HF. METHODS Individuals aged ≥60 years, with or without HF, were evaluated for frailty (phenotype). Near-infrared spectroscopy (NIRS) was used to assess muscle oxygenation at rest (oxygen saturation - StO2 and deoxyhemoglobin) and during handgrip exercise (minimum StO2 and maximum deoxyhemoglobin), and oxygenation variables. STATISTICAL ANALYSIS Results were grouped according to the frailty phenotype: non-frail, pre-frail, and frail. Shapiro-Wilk test was used to assess normality. Data were compared using a two-way analysis of variance (ANOVA). Bonferroni post hoc test was applied to determine the influence of frailty or HF on NIRS variables. SPSS software was used in the analyses; p < 0.05 was considered significant. RESULTS 55 elderly participants (61.8% female; 70.4 ± 7.2 years old; 28 HF patients) participated in the study. 32.7% (n = 18) were classified as non-frail, 43.3% (n = 24) as pre-frail, and 23.6% (n = 13) as frail. The analysis of vascular responsiveness (n = 52) identified an influence (p < 0.05) of frailty on the reperfusion rate (slope 2 and ∆StO2 of nadir-peak) and desaturation during occlusion (area under the curve of StO2) in HF patients. There was no influence of frailty or HF on muscle oxygenation at rest and during exercise (n = 54; p > 0.05). CONCLUSION The coexistence of frailty and HF seems to impair vascular responsiveness, as frail elderly participants with HF presented lower reperfusion rates and higher desaturation levels during the arterial occlusion test. However, the presence of frailty or HF alone had no influence on muscle oxygenation at rest or during exercise.
Collapse
Affiliation(s)
- Daiana Aparecida Rech
- Programa de Pós-Graduação em Fisioterapia, Universidade do Estado de Santa Catarina (UDESC), Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil
| | - Lucas Santos da Silveira
- Programa de Pós-Graduação em Fisioterapia, Universidade do Estado de Santa Catarina (UDESC), Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil
| | - Edgar Manoel Martins
- Programa de Pós-Graduação em Fisioterapia, Universidade do Estado de Santa Catarina (UDESC), Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil
| | | | - Amanda Althoff
- Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil
| | - Andrew John Maiorana
- Department of Allied Health, Fiona Stanley Hospital, 11 Robin Warren Drive, Murdoch, Western Australia 6150, Australia; School of Allied Health, Curtin University, Kent Street, Bentley, Western Australia 6102, Australia.
| | - Ariany Marques Vieira
- Programa de Pós-Graduação em Fisioterapia, Universidade do Estado de Santa Catarina (UDESC), Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Montreal Behavioural Medicine Centre, 5400 Boul Gouin O, Montréal, Québec, QC H4J 1C5, Canada
| | - Marlus Karsten
- Programa de Pós-Graduação em Fisioterapia, Universidade do Estado de Santa Catarina (UDESC), Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Grupo de Pesquisa em Saúde Cardiovascular e Exercício - GepCardio, UDESC, Rua Pascoal Simone, 358, Florianópolis, SC 88080-350, Brazil; Programa de Pós-Graduação em Ciências da Reabilitação, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, Porto Alegre, RS 90050-170, Brazil.
| |
Collapse
|
23
|
Whyte E, Thomas S, Marzolini S. Muscle Oxygenation of the Paretic and Nonparetic Legs During and After Arterial Occlusion in Chronic Stroke. J Stroke Cerebrovasc Dis 2021; 31:106265. [PMID: 34954600 DOI: 10.1016/j.jstrokecerebrovasdis.2021.106265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/16/2021] [Accepted: 12/02/2021] [Indexed: 11/16/2022] Open
Abstract
Oxygen delivery and demand are reduced in the paretic leg post-stroke, reflecting decreased vascular function and reduced muscle quantity and quality. However, it is unknown how muscle oxygenation, the balance between muscle oxygen delivery and utilization, is altered in chronic stroke during and after occlusion-induced ischemia. OBJECTIVES The objective was to determine muscle oxygen consumption rate, microvascular responsiveness and reactive hyperemia in the paretic and nonparetic legs during and after arterial occlusion post-stroke. MATERIALS AND METHODS Muscle oxygen saturation was measured with near-infrared spectroscopy on the vastus lateralis of each leg during 3-minute arterial occlusion and recovery (3 min). Muscle oxygen consumption was derived from the desaturation slope during ischemia, microvascular responsiveness was derived from the resaturation slope after ischemia and reactive hyperemia was derived from the area under the curve above baseline after ischemia. RESULTS Eleven subjects (91% male; 32.2±6.1 months post-stroke; age 62.9±13.6 years) with a hemiparetic gait pattern participated. There was no significant between-leg muscle oxygenation difference at rest (paretic: 64.9±16.6%; nonparetic: 70.6±15.6%, p = 0.13). Muscle oxygen consumption in the paretic leg (-0.53±0.24%/s) was significantly reduced compared to the nonparetic leg (-0.70±0.36%/s; p = 0.03). Microvascular responsiveness was significantly reduced in the paretic leg compared to the nonparetic leg (paretic: 4.6±1.8%/s; nonparetic: 5.7±1.6%/s, p = 0.04). Reactive hyperemia was not significantly different between legs (paretic:4384±2341%·s; nonparetic: 3040±2216%·s, p = 0.07). CONCLUSION Muscle oxygen consumption and microvascular responsiveness are impaired in the paretic compared to the nonparetic leg, suggesting both reduced skeletal muscle aerobic function and reduced ability to maximally perfuse muscle tissue.
Collapse
Affiliation(s)
- Elizabeth Whyte
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada; KITE Research Institute-Toronto Rehabilitation Institute, University Health Network, Toronto, Canada
| | - Scott Thomas
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada; KITE Research Institute-Toronto Rehabilitation Institute, University Health Network, Toronto, Canada; Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
| | - Susan Marzolini
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada; KITE Research Institute-Toronto Rehabilitation Institute, University Health Network, Toronto, Canada; Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada; Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Toronto, ON, Canada.
| |
Collapse
|
24
|
Sabapathy M, Tan F, Al Hussein S, Jaafar H, Brocherie F, Racinais S, Ihsan M. Effect of heat pre-conditioning on recovery following exercise-induced muscle damage. Curr Res Physiol 2021; 4:155-162. [PMID: 34746835 PMCID: PMC8562196 DOI: 10.1016/j.crphys.2021.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 12/04/2022] Open
Abstract
This study investigated the influence of heat pre-conditioning on the recovery of muscle torque, microvascular function, movement economy and stride mechanics following exercise-induced muscle damage (EIMD). Twenty male participants were equally assigned to a control (CON) and an experimental group (HEAT), and performed a 30-min downhill run (DHR) to elicit EIMD. HEAT group received three consecutive days of heat exposure (45.1 ± 3.2 min of hot water immersion at 42 °C) prior to DHR. Microvascular function (near-infrared spectroscopy), maximal voluntary contraction (MVC) torque of the knee extensors, as well as two treadmill-based steady-state runs performed below (SSR-1) and above (SSR-2) the first ventilatory threshold were assessed prior to DHR and repeated for four consecutive days post-DHR (D1-POST to D4-POST). The decline in MVC torque following EIMD was attenuated in HEAT compared with CON at D1-POST (p = 0.037), D3-POST (p = 0.002) and D4-POST (p = 0.022). Muscle soreness increased in both CON and HEAT, but was significantly attenuated in HEAT compared with CON at D2-POST (p = 0.024) and D3-POST (p = 0.013). Microvascular function decreased in CON from D1-POST to D3-POST (p = 0.009 to 0.018), and was lower compared with HEAT throughout D1-POST to D3-POST (p = 0.003 to 0.017). Pre-heat treatment decreased the magnitude of strength loss and muscle soreness, as well as attenuated the decline in microvascular function following EIMD. Heat treatment appears a promising pre-conditioning strategy when embarking on intensified training periods or competition. Three days of heat pre-conditioning decreases the extent of strength loss, soreness and microvascular function after EIMD. Pre heat treatment might be a promising preconditioning tool prior to intensified training periods or competition. Heat tretament may positively impact activities of daily living, training quality and adherence to training programs.
Collapse
Affiliation(s)
- Murali Sabapathy
- Sport Physiology, Sport Science and Medicine, Singapore Sport Institute, Republic of Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Republic of Singapore
| | - Frankie Tan
- Sport Physiology, Sport Science and Medicine, Singapore Sport Institute, Republic of Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Republic of Singapore
| | - Shadiq Al Hussein
- Sport Physiology, Sport Science and Medicine, Singapore Sport Institute, Republic of Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Republic of Singapore
| | - Haiyum Jaafar
- Football Science and Medicine, Football Association of Singapore, Republic of Singapore
| | - Franck Brocherie
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport (INSEP), Paris, France
| | - Sebastien Racinais
- Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - Mohammed Ihsan
- Sport Physiology, Sport Science and Medicine, Singapore Sport Institute, Republic of Singapore
- Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
- Human Potential Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Republic of Singapore
- Corresponding author. Human Potential Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Republic of Singapore. 10 Medical Drive, 117597, Singapore.
| |
Collapse
|
25
|
Rasica L, Inglis EC, Iannetta D, Soares RN, Murias JM. Fitness Level- and Sex-related Differences in Macro- and Microvascular Responses during Reactive Hyperemia. Med Sci Sports Exerc 2021; 54:497-506. [PMID: 34652334 DOI: 10.1249/mss.0000000000002806] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Reactive hyperemia (RH) is widely used for the investigation of macrovascular (Flow-Mediated Dilation, FMD) and microvascular (Near Infrared Spectroscopy-Vascular Occlusion Test, NIRS-VOT) function. Mixed results have been reported on fitness level- and sex-related differences in FMD outcomes, and little is known about microvascular differences in untrained and chronically trained males and females. METHODS Fifteen chronically trained (CT: 8 MALES, 7 FEMALES) and sixteen untrained (UT: 8 MALES, 8 FEMALES) individuals participated in this study. Aerobic fitness (V[Combining Dot Above]O2max) was assessed during a cycling incremental exercise test to volitional exhaustion. FMD and NIRS-VOT were performed simultaneously on the lower limb investigating superficial femoral artery and vastus lateralis muscle, respectively. RESULTS %FMD was not different between groups (CT MALES, 4.62 ± 1.42; CT FEMALES, 4.15 ± 2.23; UT MALES, 5.10 ± 2.53; CT FEMALES, 3.20 ± 1.67). Peak blood flow showed greater values in CT vs UT (p ≤ 0.0001) and MALES vs FEMALES (p = 0.032). RH blood flow AUC was greater in CT vs UT (p = 0.001). At the microvascular level, desaturation and reperfusion rates were faster in CT vs UT (p = 0.018 and p = 0.013) and MALES vs FEMALES (p = 0.011 and p = 0.005). V[Combining Dot Above]O2max was significantly correlated with reperfusion rate (p = 0.0005) but not with %FMD. CONCLUSION Whereas NIRS-VOT outcomes identified fitness- and sex-related differences in vascular responses, %FMD did not. However, when reactive hyperemia-related outcomes from the FMD analysis were considered, fitness- and/or sex-related differences were detected. These data highlight the importance of integrating FMD and NIRS-VOT outcomes for a more comprehensive evaluation of vascular function.
Collapse
Affiliation(s)
- Letizia Rasica
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
| | | | | | | | | |
Collapse
|
26
|
Mattioni Maturana F, Soares RN, Murias JM, Schellhorn P, Erz G, Burgstahler C, Widmann M, Munz B, Thiel A, Nieß AM. Responders and non-responders to aerobic exercise training: beyond the evaluation of V˙O2max. Physiol Rep 2021; 9:e14951. [PMID: 34409753 PMCID: PMC8374384 DOI: 10.14814/phy2.14951] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/09/2021] [Accepted: 06/13/2021] [Indexed: 02/07/2023] Open
Abstract
The evaluation of the maximal oxygen uptake ( V ˙ O 2 max ) following exercise training is the classical assessment of training effectiveness. Research has lacked in investigating whether individuals that do not respond to the training intervention ( V ˙ O 2 max ), also do not improve in other health-related parameters. We aimed to investigate the cardiovascular and metabolic adaptations (i.e., performance, body composition, blood pressure, vascular function, fasting blood markers, and resting cardiac function and morphology) to exercise training among participants who showed different levels of V ˙ O 2 max responsiveness. Healthy sedentary participants engaged in a 6-week exercise training program, three times a week. Our results showed that responders had a greater increase in peak power output, second lactate threshold, and microvascular responsiveness, whereas non-responders had a greater increase in cycling efficiency. No statistical differences were observed in body composition, blood pressure, fasting blood parameters, and resting cardiac adaptations. In conclusion, our study showed, for the first time, that in addition to the differences in the V ˙ O 2 max , a greater increase in microvascular responsiveness in responders compared to non-responders was observed. Additionally, responders and non-responders did not show differences in the adaptations on metabolic parameters. There is an increasing need for personalized training prescription, depending on the target clinical outcome.
Collapse
Affiliation(s)
- Felipe Mattioni Maturana
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
- Interfaculty Research Institute for Sport and Physical ActivityEberhard Karls University of TübingenTübingenGermany
| | | | - Juan M. Murias
- Faculty of KinesiologyUniversity of CalgaryCalgaryCanada
| | - Philipp Schellhorn
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
| | - Gunnar Erz
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
| | | | - Manuel Widmann
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
- Interfaculty Research Institute for Sport and Physical ActivityEberhard Karls University of TübingenTübingenGermany
| | - Barbara Munz
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
- Interfaculty Research Institute for Sport and Physical ActivityEberhard Karls University of TübingenTübingenGermany
| | - Ansgar Thiel
- Interfaculty Research Institute for Sport and Physical ActivityEberhard Karls University of TübingenTübingenGermany
- Institute of Sports ScienceEberhard Karls University TübingenTübingenGermany
| | - Andreas M. Nieß
- Sports Medicine DepartmentUniversity Hospital of TübingenTübingenGermany
- Interfaculty Research Institute for Sport and Physical ActivityEberhard Karls University of TübingenTübingenGermany
| |
Collapse
|
27
|
de Oliveira GV, Volino-Souza M, Leitão R, Pinheiro V, Conte-Júnior CA, Alvares TS. Suitability of the muscle O 2 resaturation parameters most used for assessing reactive hyperemia: a near-infrared spectroscopy study. J Vasc Bras 2021; 20:e20200143. [PMID: 34104131 PMCID: PMC8153062 DOI: 10.1590/1677-5449.200143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background There is a spectrum of possibilities for analyzing muscle O2 resaturation parameters for measurement of reactive hyperemia in microvasculature. However, there is no consensus with respect to the responsiveness of these O2 resaturation parameters for assessing reactive hyperemia. Objectives This study investigates the responsiveness of the most utilized muscle O2 resaturation parameters to assess reactive hyperemia in the microvasculature of a clinical group known to exhibit impairments of tissue O2 saturation (StO2). Methods Twenty-three healthy young adults, twenty-nine healthy older adults, and thirty-five older adults at risk of cardiovascular disease (CVD) were recruited. Near-infrared spectroscopy (NIRS) was used to assess StO2 after a 5-min arterial occlusion challenge and the following parameters were analyzed: StO2slope_10s, StO2slope_30s, and StO2slope_until_baseline (upslope of StO2 over 10s and 30s and until StO2 reaches the baseline value); time to StO2baseline and time to StO2max (time taken for StO2 to reach baseline and peak values, respectively); ∆StO2reperfusion (the difference between minimum and maximum StO2 values); total area under the curve (StO2AUCt); and AUC above the baseline value (StO2AUC_above_base). Results Only StO2slope_10s was significantly slower in older adults at risk for CVD compared to healthy young individuals (p < 0.001) and to healthy older adults (p < 0.001). Conversely, time to StO2max was significantly longer in healthy young individuals than in older adult at CVD risk. Conclusions Our findings suggest that StO2slope_10s may be a measure of reactive hyperemia, which provides clinical insight into microvascular function assessment.
Collapse
Affiliation(s)
| | | | - Renata Leitão
- Universidade Federal do Rio de Janeiro - UFRJ, Macaé, RJ, Brasil
| | - Vivian Pinheiro
- Universidade Federal do Rio de Janeiro - UFRJ, Macaé, RJ, Brasil
| | | | | |
Collapse
|
28
|
Cho AR, Kim HJ, Lee HJ, Kim H, Do W, Kang C, Kim Y. Changes in the microvascular reactivity during spinal anesthesia. Microvasc Res 2021; 137:104176. [PMID: 33984341 DOI: 10.1016/j.mvr.2021.104176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE Anesthesia alters microcirculation and tissue oxygen saturation (StO2). We sought to examine changes in StO2 using near-infrared spectroscopy and a vascular occlusion test (VOT) during spinal anesthesia. METHODS This prospective observational study was included 51 patients without comorbidities who underwent elective surgery under spinal anesthesia. We measured the StO2 in the lower extremity during VOT before and after intrathecal injection. RESULTS The baseline, minimum, and maximum StO2 values during VOT significantly increased after intrathecal injection (baseline StO2 from 68.6 ± 7.3% to 77.1 ± 10.1%, minimum StO2 from 39.7 ± 14.9% to 48.8 ± 17.6%, and maximum StO2 from 74.2 ± 7.5% to 80.2 ± 10.0%, all P < 0.0001). The occlusion slope and ischemic stimulus did not significantly change after intrathecal injection. The reperfusion slope was 1.38 ± 0.69%/sec before intrathecal injection and significantly decreased to 1.15 ± 0.61%/sec after intrathecal injection (P = 0.0001). CONCLUSIONS Our results showed that despite an increased perfusion, reperfusion rate was significantly decreased by spinal anesthesia. Further studies are required to confirm how these contradictory results (improving oxygenation while reducing microvascular reactivity) actually affect the clinical impact of spinal anesthesia on microvascular function.
Collapse
Affiliation(s)
- Ah-Reum Cho
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea; Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyae-Jin Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea; Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
| | - Hyeon-Jeong Lee
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea; Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Haekyu Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea; Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Wangseok Do
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Christine Kang
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Yesul Kim
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| |
Collapse
|
29
|
Mizunoya K, Yagi Y, Morimoto Y, Hirano S. Altered microvascular reactivity assessed by near-infrared spectroscopy after hepato-pancreato-biliary surgery. J Clin Monit Comput 2021; 36:703-712. [PMID: 33829357 DOI: 10.1007/s10877-021-00697-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/23/2021] [Indexed: 11/25/2022]
Abstract
Little is known about microcirculatory dysfunction following abdominal surgeries. This study aimed to evaluate changes in microvascular reactivity (MVR) before and after major abdominal surgery, assessed by near-infrared spectroscopy in conjunction with a vascular occlusion test. This prospective observational study included 50 adult patients who underwent hepato-pancreato-biliary surgery lasting ≥ 8 h. MVR was assessed by tissue oxygen saturation (StO2) changes in the plantar region of the foot during 3 min of vascular occlusion and subsequent release under general anesthesia before and after surgery. The primary outcome was alteration in the recovery slope of StO2 (RecStO2) and recovery time (tM) between the preoperative and postoperative values. Postoperative short-term outcome was represented by the Post-operative Morbidity Survey (POMS) score on the morning of postoperative day 2. After surgery, RecStO2 was reduced (0.74% [0.58-1.06]/s vs. 0.89% [0.62-1.41]/s, P = 0.001), and tM was longer (57.0 [42.9-71.0] s vs. 41.3 [35.5-56.5] s, P < 0.001), compared to the preoperative values. Macrohemodynamic variables such as cardiac index, arterial pressure, and stroke volume during postoperative measurement did not differ with or without relative MVR decline. In addition, the POMS score was not associated with postoperative alterations in microcirculatory responsiveness. MVR in the plantar region of the foot was reduced after major hepato-pancreato-biliary surgery regardless of macrocirculatory adequacy. Impaired MVR was not associated with short-term outcomes as long as macrocirculatory indices were well maintained. The impact of relative microcirculatory changes, especially combined with inadequate macrocirculation, on postoperative complications remains to be elucidated.Clinical Trial Registrations UMIN-CTR trial ID: 000033461.
Collapse
Affiliation(s)
- Kazuyuki Mizunoya
- Department of Anesthesiology, Hokkaido University Hospital, Kita-ku, Sapporo, N14, W5060-8648, Japan.
| | - Yasunori Yagi
- Department of Anesthesiology, Hokkaido University Hospital, Kita-ku, Sapporo, N14, W5060-8648, Japan
| | - Yuji Morimoto
- Department of Anesthesiology, Hokkaido University Hospital, Kita-ku, Sapporo, N14, W5060-8648, Japan
| | - Satoshi Hirano
- Department of Gastroenterological Surgery II, Hokkaido University Hospital, Sapporo, Japan
| |
Collapse
|
30
|
Maturana FM, Schellhorn P, Erz G, Burgstahler C, Widmann M, Munz B, Soares RN, Murias JM, Thiel A, Nieß AM. Individual cardiovascular responsiveness to work-matched exercise within the moderate- and severe-intensity domains. Eur J Appl Physiol 2021; 121:2039-2059. [PMID: 33811557 PMCID: PMC8192395 DOI: 10.1007/s00421-021-04676-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/28/2021] [Indexed: 12/13/2022]
Abstract
Purpose We investigated the cardiovascular individual response to 6 weeks (3×/week) of work-matched within the severe-intensity domain (high-intensity interval training, HIIT) or moderate-intensity domain (moderate-intensity continuous training, MICT). In addition, we analyzed the cardiovascular factors at baseline underlying the response variability. Methods 42 healthy sedentary participants were randomly assigned to HIIT or MICT. We applied the region of practical equivalence-method for identifying the levels of responders to the maximal oxygen uptake (V̇O2max) response. For investigating the influence of cardiovascular markers, we trained a Bayesian machine learning model on cardiovascular markers. Results Despite that HIIT and MICT induced significant increases in V̇O2max, HIIT had greater improvements than MICT (p < 0.001). Greater variability was observed in MICT, with approximately 50% classified as “non-responder” and “undecided”. 20 “responders”, one “undecided” and no “non-responders” were observed in HIIT. The variability in the ∆V̇O2max was associated with initial cardiorespiratory fitness, arterial stiffness, and left-ventricular (LV) mass and LV end-diastolic diameter in HIIT; whereas, microvascular responsiveness and right-ventricular (RV) excursion velocity showed a significant association in MICT. Conclusion Our findings highlight the critical influence of exercise-intensity domains and biological variability on the individual V̇O2max response. The incidence of “non-responders” in MICT was one third of the group; whereas, no “non-responders” were observed in HIIT. The incidence of “responders” was 11 out of 21 participants in MICT, and 20 out of 21 participants in HIIT. The response in HIIT showed associations with baseline fitness, arterial stiffness, and LV-morphology; whereas, it was associated with RV systolic function in MICT.
Collapse
Affiliation(s)
- Felipe Mattioni Maturana
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany.
- Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany.
| | - Philipp Schellhorn
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany
| | - Gunnar Erz
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany
| | | | - Manuel Widmann
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany
- Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Barbara Munz
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany
- Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany
| | | | - Juan M Murias
- Faculty of Kinesiology, University of Calgary, Calgary, Canada
| | - Ansgar Thiel
- Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany
- Institute of Sports Science, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Andreas M Nieß
- Sports Medicine Department, University Hospital of Tübingen, Tübingen, Germany
- Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany
| |
Collapse
|
31
|
Matthews EL, Guers JJ, Hosick PA. Young healthy adults with a family history of hypertension have increased microvascular reactivity but decreased macrovascular function. Microcirculation 2021; 28:e12676. [PMID: 33417732 DOI: 10.1111/micc.12676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 12/23/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To determine whether, like hypertensives, normotensive adults with a family history of hypertension (+FHH) display lower microvascular reactivity and conduit artery function than normotensive adults without a family history of hypertension (-FHH). METHODS A forearm vascular occlusion test was performed on healthy normotensive adults while resting in the supine position. A near-infrared spectroscopy sensor placed on the forearm measured skeletal muscle oxygen saturation kinetics to determine microvascular reactivity. Simultaneously, an ultrasound probe placed on the brachial artery above the occlusion cuff was used to assess flow-mediated dilation; a test of macrovascular function. RESULTS Twenty-two participants were included in this investigation (-FHH n = 13, +FHH n = 9). Following cuff release, the resaturation slope (1st 10 s median ± SD, -FHH 2.76 ± 2.10, +FHH 5.59 ± 2.47%/s; p = .036) was greater in +FHH when accounting for the magnitude and rate of the decrease in skeletal muscle oxygen saturation during occlusion. Conversely, flow-mediated dilation (median ± SD, -FHH 5.96 ± 5.22, +FHH 4.10 ± 3.17%∆; p = .031) was lower in +FHH when accounting for baseline artery diameter and shear rate. CONCLUSIONS Young +FHH adults have altered microvascular and macrovascular reactivity compared with young -FHH adults.
Collapse
Affiliation(s)
- Evan L Matthews
- Department of Exercise Science and Physical Education, Montclair State University, Montclair, NJ, USA
| | - John J Guers
- Department of Biology, Behavioral Neuroscience, and Health Sciences, Rider University, Lawrenceville, NJ, USA
| | - Peter A Hosick
- Department of Exercise Science and Physical Education, Montclair State University, Montclair, NJ, USA
| |
Collapse
|
32
|
Soares RN, Inglis EC, Khoshreza R, Murias JM, Aboodarda SJ. Rolling massage acutely improves skeletal muscle oxygenation and parameters associated with microvascular reactivity: The first evidence-based study. Microvasc Res 2020; 132:104063. [PMID: 32841627 DOI: 10.1016/j.mvr.2020.104063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 02/07/2023]
Abstract
Although it has been claimed that rolling massage (RM), may lead to improvements in skeletal muscle oxygenation, metabolism, blood flow, and vascular function, scientific evidence has not yet been provided. Thus, the current study investigated the effects of 30 s and 2 min of RM on forearm muscle oxygenation, parameters associated with oxidative metabolism, and microvascular reactivity as well as brachial artery endothelial function. Forearm skeletal muscle parameters were assessed in 12 healthy young men (26 ± 6 yrs) using near-infrared spectroscopy (NIRS) combined with a 5-min vascular occlusion test. Additionally, brachial artery endothelial function was simultaneously assessed by measuring the relative change in brachial artery diameter normalized to the hyperemic blood flow (Normalized %FMD). These measurements were performed before and after the RM interventions performed on the anterior forearm muscles. Forearm muscle oxygenation increased after 30 s of RM (62 ± 7 to 71 ± 11%; p = 0.02) while there was no change from baseline to post-intervention after 2 min of RM. No change was observed for oxidative metabolism, however, the significant main effect (p = 0.02) for NIRS-derived reperfusion slope (%·s-1) indicated that microvascular function improved after both 30 s (2.30 ± 0.5 to 2.61 ± 0.70%·s-1) and 2 min of RM (2.33 ± 0.4 to 2.60 ± 0.85%·s-1). The lack of significant effects of RM on Normalized %FMD suggest that the RM did not acutely improve brachial artery endothelial function. These findings provide, for the first time, evidence that RM improves skeletal muscle oxygenation and parameters associated with microvascular reactivity. Additionally, RM increased brachial artery blood flow, but not upstream brachial artery endothelial function.
Collapse
Affiliation(s)
- Rogerio N Soares
- Faculty of Kinesiology, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - Erin Calaine Inglis
- Faculty of Kinesiology, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - Rojan Khoshreza
- Faculty of Kinesiology, Sport, and Recreation, University of Alberta, 3-100 University Hall, Van Vliet Complex, Edmonton, AB T6G 2H9, Canada
| | - Juan M Murias
- Faculty of Kinesiology, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada
| | - Saied Jalal Aboodarda
- Faculty of Kinesiology, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
| |
Collapse
|
33
|
de Oliveira GV, Mendes Cordeiro E, Volino-Souza M, Rezende C, Conte-Junior CA, Silveira Alvares T. Flow-Mediated Dilation in Healthy Young Individuals Is Impaired after a Single Resistance Exercise Session. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17145194. [PMID: 32708408 PMCID: PMC7400374 DOI: 10.3390/ijerph17145194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/07/2020] [Accepted: 07/10/2020] [Indexed: 01/08/2023]
Abstract
The current pool of data investigating the effects of a single resistance exercise session on endothelial function is divergent and inconclusive. Therefore, the purpose of the present study was to evaluate the effect of a single resistance exercise session on flow-mediated dilation (FMD) in trained individuals. Eleven healthy, young, recreationally resistance-trained individuals participated in the study. After determining the resistance exercise workload, the participants performed three sets of 10–12 repetition of leg press and leg extension exercises. By using ultrasound equipment, brachial artery FMD was assessed before (PRE) and 30 min after (POST) the resistance exercise protocol or resting (control) to evaluate endothelial function. A significant reduction in FMD response (PRE: 5.73% ± 1.21% vs. POST: 4.03% ± 1.94%, p < 0.01) after resistance exercise was observed, accompanied by a large effect size (d = 1.05). No significant difference was observed in FMD in the control condition (PRE: 5.82% ± 1.19% vs. POST: 5.66% ± 1.24%, p = 0.704). Additionally, no significant difference in baseline brachial artery diameter between resistance exercise (PRE: 3.30 ± 0.32 vs. POST: 3.40 ± 0.34 mm, p = 0.494) and resting (PRE: 3.64 ± 0.41 vs. POST: 3.67 ± 0.62 mm, p = 0.825) was observed. Our findings showed that a single resistance exercise session induced a reduction in FMD in resistance-trained individuals.
Collapse
Affiliation(s)
- Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil
| | - Elisaldo Mendes Cordeiro
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil
| | - Mônica Volino-Souza
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Cristina Rezende
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil
| | - Carlos Adam Conte-Junior
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil; (G.V.d.O.); (E.M.C.); (M.V.-S.); (C.R.); (C.A.C.-J.)
- Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro 27971-525, Brazil
- Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Correspondence: ; Tel.: +55-21-99989-6554
| |
Collapse
|
34
|
Dietary nitrate improves skeletal muscle microvascular oxygenation in HIV-infected patients receiving highly active antiretroviral therapy: a randomised, double-blind, cross-over, placebo-controlled study. Br J Nutr 2020; 124:1277-1284. [PMID: 32576320 DOI: 10.1017/s0007114520002226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
HIV-1 proteins and highly active antiretroviral therapy (HAART) have been associated with microvascular endothelial dysfunction. Although nitrate-rich beetroot juice (NR-BJ) consumption has been shown to improve endothelial function in clinical population, its effects in HIV-infected patients has not been addressed. We investigated the effect of a single dose of NR-BJ on muscle oxygen saturation parameters in response to a handgrip exercise in HIV-infected patients. Fifteen HIV-infected patients received NR-BJ or nitrate-depleted beetroot juice (ND-BJ) in a double-blind cross-over design. Near-IR spectroscopy was utilised to assess muscle oxygen saturation parameters during rhythmic handgrip exercise after NR-BJ or ND-BJ supplementation. A significant faster muscle oxygen desaturation rate during exercise (-7·97 (sd 5·00) v. -5·45 (3·94) %/s, P = 0·005) and muscle oxygen resaturation rate during exercise recovery (0·43 (0·24) v. 0·28 (0·24) %/s, P = 0·030) after NR-BJ ingestion was found. However, no significant difference in exercise time until fatigue was observed. Salivary nitrite and urinary nitrate concentration were analysed after NR-BJ or ND-BJ. A significant increase in salivary nitrite and urinary nitrate in NR-BJ was observed compared with ND-BJ (P < 0·05). Our findings suggest that NR-BJ consumption may acutely improve muscle oxygen saturation during exercise and exercise recovery in HIV-infected patients undergoing HAART and who are expected to present microvascular damage. Thus, future studies investigating the chronic effects of NR-BJ are warranted to delineate a better nutritional strategy based on nitrate-rich foods.
Collapse
|
35
|
Pustetto M, Goldsztejn N, Touihri K, Engelman E, Ickx B, Van Obbergh L. Intravenous lidocaine to prevent endothelial dysfunction after major abdominal surgery: a randomized controlled pilot trial. BMC Anesthesiol 2020; 20:155. [PMID: 32576151 PMCID: PMC7310453 DOI: 10.1186/s12871-020-01075-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/16/2020] [Indexed: 01/22/2023] Open
Abstract
Background Major abdominal surgery is associated with endothelial glycocalyx disruption. The anti-inflammatory effects of lidocaine were recently associated with endothelial barrier protection. Methods This was a single-centre, parallel group, randomized, controlled, double blind, pilot trial. Forty adult patients scheduled for major abdominal surgery were included between December 2016 and March 2017 in the setting of a University Hospital in Brussels (Belgium); reasons for non-inclusion were planned liver resection and conditions associated to increased risk of local anesthetics systemic toxicity. Patients were randomized to receive either lidocaine by continuous intravenous administration or an equivalent volume of 0.9% saline. The primary endpoint was the postoperative syndecan-1 concentration (difference between groups). Near-infrared spectroscopy of the thenar eminence in association with the vascular occlusion test, and contemporary analysis of flow-mediated dilation of the brachial artery were the secondary outcomes, along with haemodynamic data. Blood samples and data were collected before surgery (T0), and at 1–3 h (T1) and 24 h (T2) post-surgery. Results Syndecan-1 concentration increased significantly post-surgery (P < 0.001), but without any difference between groups. The near-infrared spectroscopy-derived and flow-mediated dilation-derived variables showed minor changes unrelated to group assignment. Compared with the placebo group, the intervention group had a significantly lower peri-operative mean arterial pressure and cardiac index, despite equally conducted goal-directed haemodynamic management. Postoperative lactate concentrations were similar between groups. Conclusions Lidocaine failed to have any effect on endothelial function. Since in comparisons to other types of clinical situations, syndecan-1 was only slightly upregulated, endothelial dysfunction after major abdominal surgery might be overestimated. Trial registration « ISRCTN Registry » identifier: ISRCTN63417725. Date: 15/06/2020. Retrospectively registered.
Collapse
Affiliation(s)
- Marco Pustetto
- Department of Anesthesiology, Centre Hospitalier Universitaire Grenoble-Alpes, Boulevard de la Chantourne, 38700, Grenoble, France.
| | - Nicolas Goldsztejn
- Department of Anesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Karim Touihri
- Department of Anesthesiology, CHIREC Hospital group, Brussels, Belgium
| | - Edgard Engelman
- Department of Anesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Brigitte Ickx
- Department of Anesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Luc Van Obbergh
- Department of Anesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| |
Collapse
|
36
|
Oliveira GV, Volino-Souza M, Cordeiro EM, Alvares TS. Fish protein hydrolysate supplementation improves vascular reactivity in individuals at high risk factors for cardiovascular disease: A pilot study. PHARMANUTRITION 2020. [DOI: 10.1016/j.phanu.2020.100186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
37
|
Passive smoking acutely affects the microcirculation in healthy non-smokers. Microvasc Res 2020; 128:103932. [DOI: 10.1016/j.mvr.2019.103932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 08/31/2019] [Accepted: 09/26/2019] [Indexed: 02/02/2023]
|
38
|
Rosenberry R, Nelson MD. Reactive hyperemia: a review of methods, mechanisms, and considerations. Am J Physiol Regul Integr Comp Physiol 2020; 318:R605-R618. [PMID: 32022580 DOI: 10.1152/ajpregu.00339.2019] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Reactive hyperemia is a well-established technique for noninvasive assessment of peripheral microvascular function and a predictor of all-cause and cardiovascular morbidity and mortality. In its simplest form, reactive hyperemia represents the magnitude of limb reperfusion following a brief period of ischemia induced by arterial occlusion. Over the past two decades, investigators have employed a variety of methods, including brachial artery velocity by Doppler ultrasound, tissue reperfusion by near-infrared spectroscopy, limb distension by venous occlusion plethysmography, and peripheral artery tonometry, to measure reactive hyperemia. Regardless of the technique used to measure reactive hyperemia, blunted reactive hyperemia is believed to reflect impaired microvascular function. With the advent of several technological advancements, together with an increased interest in the microcirculation, reactive hyperemia is becoming more common as a research tool and is widely used across multiple disciplines. With this in mind, we sought to review the various methodologies commonly used to assess reactive hyperemia and current mechanistic pathways believed to contribute to reactive hyperemia and reflect on several methodological considerations.
Collapse
Affiliation(s)
- Ryan Rosenberry
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| | - Michael D Nelson
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas.,Department of Bioengineering, University of Texas at Arlington, Arlington, Texas
| |
Collapse
|
39
|
Horiuchi M, Okita K. Microvascular responses during reactive hyperemia assessed by near-infrared spectroscopy and arterial stiffness in young, middle-aged, and older women. Microvasc Res 2020; 129:103972. [PMID: 31891717 DOI: 10.1016/j.mvr.2019.103972] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 10/25/2022]
Abstract
We investigated the effects of age on microvascular responses during reactive hyperemia and arterial stiffness in 13 young (22 ± 1 years), 12 middle-aged (42 ± 5 years), and 15 older (63 ± 2 years) women. During the vascular occlusion test (VOT), forearm tissue oxygen saturation (StO2) was measured using near-infrared spectroscopy (NIRS). During reperfusion, the area under the curve (AUC) during hyperemia in young women (1123 ± 208% s) was significantly greater than that in middle-aged (771 ± 445% s, P = 0.024) and older women (619 ± 356% s, P = 0.001) with no differences between middle-aged and older women (P = 0.265). Cardio-ankle vascular index (CAVI) as an indicator of arterial stiffness was assessed using four-limb oscillometry. CAVI significantly increased with age (8.1 ± 0.7 in the older group, 6.0 ± 0.8 in the middle-aged group, and 5.8 ± 0.4 in the young group), with significant differences between older women and women in the other groups (P < 0.001); however, no differences in CAVI between young and middle-aged women (P = 0.484) were found. When the data of all groups were pooled, the AUC or upslope was associated with CAVI or body mass index or mean arterial pressure (all P < 0.05). To conclude, the AUC derived by NIRS measures of StO2 during the reperfusion phase can be used as one of the evaluations of microvascular function, followed by the development of atherosclerosis in middle-aged and older women.
Collapse
Affiliation(s)
- Masahiro Horiuchi
- Division of Human Environmental Science, Mount Fuji Research Institute, Kami-yoshida 5597-1, Fuji-yoshida-city 4030005, Japan.
| | - Koichi Okita
- School of Lifelong Sport, Hokusho University, Bunkyoudai 23, Ebetsu-city 0698511, Japan
| |
Collapse
|
40
|
de Oliveira GV, Volino-Souza M, Leitão R, Pinheiro V, Alvares TS. Is flow-mediated dilatation associated with near-infrared spectroscopy-derived magnitude of muscle O 2 desaturation in healthy young and individuals at risk for cardiovascular disease? Microvasc Res 2019; 129:103967. [PMID: 31837305 DOI: 10.1016/j.mvr.2019.103967] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/11/2019] [Accepted: 12/10/2019] [Indexed: 01/10/2023]
Abstract
Vascular occlusion test (VOT)-induced reactive hyperemia in brachial artery is crucial to flow-mediated dilation (FMD). Emerging studies have suggested that reactive hyperemia depends on the magnitude of the O2 desaturation (ischemia) in downstream microvessels. Although near-infrared spectroscopy-derived tissue O2 saturation index (TSI) has been used to assess the magnitude of ischemia, the association between FMD and the magnitude of O2 desaturation has not been addressed. Therefore, the aim of the present study was to evaluate whether FMD correlates with the magnitude of muscle O2 desaturation in healthy young individuals and older adults at risk for cardiovascular disease (CVD). Twenty healthy young individuals and 20 others at risk for CVD participated in the study. The magnitude of ischemic stimulus was determined by calculating the area under curve of TSI signal over 5 min of cuff occlusion period. Oxygen resaturation rate was calculated as the upslope of the TSI signal over 10 s following cuff deflation. There was no significant correlation between FMD and the magnitude of ischemic stimulus in both groups assessed (young: R = 0.327; P = 0.159 and older: R = -0.184; P = 0.436). However, a significant correlation between the magnitude of O2 desaturation and O2 resaturation rate in young (R = 0.555; P = 0.011) and older individuals at risk for CVD (R = 0.539; P = 0.014). In conclusion, FMD response did not correlate with the magnitude of muscle O2 desaturation, although it seems to be partially associated with O2 resaturation rate.
Collapse
Affiliation(s)
- Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Rio de Janeiro, Brazil; Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, RJ, Brazil
| | - Mônica Volino-Souza
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Rio de Janeiro, Brazil; Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, RJ, Brazil
| | - Renata Leitão
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Rio de Janeiro, Brazil
| | - Vivian Pinheiro
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Rio de Janeiro, Brazil
| | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Federal University of Rio de Janeiro, Macaé Campus, Rio de Janeiro, Brazil; Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, RJ, Brazil; Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, RJ, Brazil.
| |
Collapse
|
41
|
Mattu AT, MacInnis MJ, Doyle‐Baker PK, Murias JM. Effects of the menstrual and oral contraceptive cycle phases on microvascular reperfusion. Exp Physiol 2019; 105:184-191. [DOI: 10.1113/ep088135] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/15/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Anmol T. Mattu
- Faculty of Kinesiology University of Calgary Calgary Alberta Canada
| | | | - Patricia K. Doyle‐Baker
- Faculty of Kinesiology University of Calgary Calgary Alberta Canada
- Faculty of Environmental Design University of Calgary Calgary Alberta Canada
| | - Juan M. Murias
- Faculty of Kinesiology University of Calgary Calgary Alberta Canada
| |
Collapse
|
42
|
West S, Smail O, Bond B. The acute influence of sucrose consumption with and without vitamin C co-ingestion on microvascular reactivity in healthy young adults. Microvasc Res 2019; 126:103906. [DOI: 10.1016/j.mvr.2019.103906] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023]
|
43
|
Schroeder EC, Hilgenkamp TIM, Lefferts WK, Robinson N, Baynard T, Fernhall B. No effect of fitness on brachial or forearm vascular function during acute inflammation in young adults. Am J Physiol Regul Integr Comp Physiol 2019; 317:R746-R753. [PMID: 31553624 DOI: 10.1152/ajpregu.00120.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Acute inflammation is associated with increased risk of cardiovascular events and impaired vasodilatory capacity. Vasodilatory capacity can be measured in different segments of the arterial tree; however, it is unknown if the effects of acute inflammation are vascular segment-specific or if inflammation-induced dysfunction can be attenuated by factors that modulate cardiovascular risk, such as high cardiorespiratory fitness. The purpose of this study was to determine the effect of acute inflammation and fitness on conduit artery, resistance artery, and microvascular function in healthy, young adults. Vascular function was assessed at baseline and 24 h after a typhoid vaccination in 11 low-fit (5 male, 24 yr of age, 34.5 ± 2.9 ml·kg-1·min-1 peak O2 uptake (V̇o2peak)] and 12 high-fit (7 male, 27 yr of age, 56.4 ± 9.7 ml·kg-1·min-1 V̇o2peak) young adults. Vascular assessments included flow-mediated dilation (FMD) of the brachial artery, forearm reactive hyperemia (RH) via venous occlusion plethysmography, and near-infrared spectroscopy (NIRS) during a 5-min arterial occlusion. Acute inflammation was evident with increases in IL-6 and C-reactive protein (P < 0.01), and mean arterial pressure did not change (P = 0.33). FMD was lower in the high-fit group, yet it was reduced in both groups at 24 h, even after controlling for shear (P < 0.05). No effect of acute inflammation was observed for RH or NIRS (P > 0.05). Acute inflammation had nonuniform effects on vascular function throughout the arterial tree in young adults, and fitness did not alter the vascular response. This suggests that cardiorespiratory fitness may not protect the vasculature during acute inflammation in young adults in the absence of age- or disease-related decline in vascular function.
Collapse
Affiliation(s)
- Elizabeth C Schroeder
- Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois
| | - Thessa I M Hilgenkamp
- Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois
| | - Wesley K Lefferts
- Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois
| | - Nadia Robinson
- Department of Biobehavioral Health Science, University of Illinois at Chicago, Chicago, Illinois
| | - Tracy Baynard
- Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois
| | - Bo Fernhall
- Integrative Physiology Laboratory, Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois
| |
Collapse
|
44
|
Soares RN, Somani YB, Al-Qahtani AM, Proctor DN, Murias JM. Near-infrared spectroscopy detects transient decrements and recovery of microvascular responsiveness following prolonged forearm ischemia. Microvasc Res 2019; 125:103879. [DOI: 10.1016/j.mvr.2019.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/01/2019] [Accepted: 04/29/2019] [Indexed: 10/26/2022]
|
45
|
Soares RN, de Oliveira GV, Alvares TS, Murias JM. The effects of the analysis strategy on the correlation between the NIRS reperfusion measures and the FMD response. Microvasc Res 2019; 127:103922. [PMID: 31479661 DOI: 10.1016/j.mvr.2019.103922] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/30/2019] [Accepted: 08/30/2019] [Indexed: 11/19/2022]
Abstract
This study aimed to investigate the correlation between near-infrared spectroscopy (NIRS)-derived measures of microvascular responses using a range of different analysis and flow-mediated dilation (FMD). Additionally, we aimed to investigate whether assessing NIRS and FMD simultaneously or non-simultaneously would affect this association. Thirty-five healthy young individuals (26 ± 13 years old) participated in the study. Twenty were submitted to a simultaneous NIRS/FMD test (NIRS probe placed below the cuff during FMD test) and fifteen to a non-simultaneous FMD and NIRS intervention (NIRS test performed 20 min after FMD). NIRS-derived oxygen saturation signal (StO2) during reperfusion was analyzed as follow: upslope of a 10 s (slope 10 s) and 30 s (slope 30 s) reperfusion window immediately following cuff deflation, time for the StO2 to reach the pre-occlusion (baseline) values after cuff release (time to baseline) and to reach the peak after cuff release (time to max), difference between the minimum and maximum StO2 value reached after cuff deflation (Magnitude) and; the total area under the reperfusion curve above the baseline value until the end of the 2 min post cuff release (AUC 2 min). There was a significant positive correlation between slope 10 s and FMD in the simultaneous (r = 0.60; p < 0.05) and non-simultaneous (r = 0.62; p < 0.05) assessments. There was no significant correlation between NIRS-derived slope 30 s, time to baseline, time to max, magnitude, and AUC 2 min and the FMD in both methods. The association between NIRS and FMD is analysis strategy dependent, regardless if assessed simultaneously or non-simultaneously.
Collapse
Affiliation(s)
| | - Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil; Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, RJ, Brazil
| | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil; Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, RJ, Brazil
| | - Juan Manuel Murias
- Faculty of Kinesiology, University of Calgary, 2500 University Dr. NW, Calgary, AB, Canada.
| |
Collapse
|
46
|
Rosenberry R, Trojacek D, Chung S, Cipher DJ, Nelson MD. Interindividual differences in the ischemic stimulus and other technical considerations when assessing reactive hyperemia. Am J Physiol Regul Integr Comp Physiol 2019; 317:R530-R538. [PMID: 31314545 DOI: 10.1152/ajpregu.00157.2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Reactive hyperemia is an established, noninvasive technique to assess microvascular function and a powerful predictor of all-cause and cardiovascular morbidity and mortality. Emerging evidence from our laboratory suggests a close link between reactive hyperemia and the metabolic rate of the ischemic limb and the existence of large interindividual differences contributing to markedly different stimuli to vasodilate. Here we relate forearm tissue desaturation (i.e., the ischemic stimulus to vasodilate, measured by near-infrared spectroscopy) to brachial artery hyperemic velocity and flow (measured using duplex ultrasound) across a wide range of ischemic stimuli. Twelve young and 11 elderly individuals were prospectively studied. To recapitulate conventional vascular occlusion testing, reactive hyperemia was first assessed using a standard 5-min occlusion period. Then, to evaluate the dose dependence of tissue ischemia on reactive hyperemia, we randomly performed 4-, 6-, and 8-min cuff occlusions in both groups. In all cases, peak velocity, as well as the 5-s average velocity, immediately after the cuff occlusion was significantly higher in the young than the elderly group; however, tissue desaturation was also much more pronounced in the young group (P < 0.05), representing a greater ischemic stimulus. Remarkably, when reactive hyperemia was adjusted for the ischemic vasodilatory stimulus, group differences in reactive hyperemia were abrogated. Together, these data challenge conventional interpretations of reactive hyperemia and show that the ischemic stimulus to vasodilate varies across individuals and that the level of reactive hyperemia is often coupled to the magnitude of tissue desaturation.
Collapse
Affiliation(s)
- Ryan Rosenberry
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| | - Darian Trojacek
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| | - Susie Chung
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| | - Daisha J Cipher
- College of Nursing, University of Texas at Arlington, Arlington, Texas
| | - Michael D Nelson
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| |
Collapse
|
47
|
Hammer SM, Hueber DM, Townsend DK, Huckaby LM, Alexander AM, Didier KD, Barstow TJ. Effect of assuming constant tissue scattering on measured tissue oxygenation values during tissue ischemia and vascular reperfusion. J Appl Physiol (1985) 2019; 127:22-30. [DOI: 10.1152/japplphysiol.01138.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to determine the effects of assuming constant tissue scattering properties on tissue oxygenation measurements during a vascular occlusion test (VOT). Twenty-one subjects (21.8 ± 1.9 yr) completed a VOT [1 min baseline (BL), 5 min of tissue ischemia (TI), and 3 min of vascular reperfusion (VR)]. Absolute concentrations of oxygenated heme (oxy-[heme]), deoxygenated heme (deoxy-[heme]), total heme (total [heme), tissue oxygen saturation (StO2), and heme difference [heme]diff) were measured using frequency domain near-infrared spectroscopy (FD-NIRS) while 1) continuously measuring and incorporating tissue scattering ([Formula: see text]) and 2) assuming scattering remained constant. FD-NIRS measured [Formula: see text] increased during TI at 692 nm ( P < 0.001) and decreased at 834 nm ( P < 0.001). During VR, [Formula: see text] decreased at 692 nm ( P < 0.001) and increased at 834 nm ( P < 0.001). When assuming constant scattering, oxy-[heme] was significantly less at TIpeak ( P < 0.05) while deoxy-[heme] and StO2 were significantly altered at BL, TIpeak, and VRpeak (all P < 0.001). Total [heme] did not change during the VOT. Absolute changes in deoxy-[heme], oxy-[heme], and StO2 in response to TI and VR were significantly exaggerated (all P < 0.001) and the rates of change during TI ( slope 1) and VR ( slope 2) in deoxy-[heme], oxy-[heme], StO2, and [heme]diff were significantly increased (all P < 0.05) when constant tissue scattering was assumed. These findings demonstrate the need for caution when interpreting NIRS data without continuously measuring tissue optical properties. Further, assuming tissue optical properties remain constant may have important consequences to experimental data and clinical conclusions made using NIRS. NEW & NOTEWORTHY NIRS measurements provide significant experimental and clinical insight. We demonstrate that absolute changes in tissue oxygenation measurements made with NIRS are overestimated and the kinetic responses of NIRS measurements are exaggerated by varying degrees among individuals if tissue scattering characteristics are assumed to remain constant during vascular occlusion tests.
Collapse
Affiliation(s)
- Shane M. Hammer
- Department of Kinesiology, Kansas State University, Manhattan Kansas
| | | | | | - Lillie M. Huckaby
- Department of Kinesiology, Kansas State University, Manhattan Kansas
| | | | - Kaylin D. Didier
- Department of Kinesiology, Kansas State University, Manhattan Kansas
| | - Thomas J. Barstow
- Department of Kinesiology, Kansas State University, Manhattan Kansas
| |
Collapse
|
48
|
Vieira de Oliveira G, Soares RN, Volino-Souza M, Murias JM, Alvares TS. The association between near-infrared spectroscopy assessment of microvascular reactivity and flow-mediated dilation is disrupted in individuals at high risk for cardiovascular disease. Microcirculation 2019; 26:e12556. [PMID: 31077636 DOI: 10.1111/micc.12556] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE This study aimed to evaluate the correlation between the NIRS-derived reperfusion slope and %FMD in the arm of healthy and at high risk for CVD individuals. METHODS Twelve healthy (24 ± 4 years) and twelve at high risk for cardiovascular disease (65 ± 11 years) individuals participated in the study. The individuals were submitted to a conduit artery FMD followed by a NIRS-VOT microvascular function test in the arm. Microvascular responsiveness was calculated as the forearm reperfusion slope, and macrovascular function was assessed as the percent of change in FMD (%FMD) of the brachial artery. RESULTS There was a significant correlation between reperfusion slope and %FMD (R = 0.61, P < 0.05) in the healthy group; however, no significant correlation between FMD and reperfusion slope (R = -0.21, P > 0.05) was found in individuals at high risk for CVD. CONCLUSION The correlation between NIRS-derived reperfusion slope and %FMD was disrupted in the arm of individuals at high risk for cardiovascular disease compared to healthy individuals. The findings of the present study reinforce the importance of examining vascular function at microvasculature and conduit artery level, especially in populations with risk factors for CVD.
Collapse
Affiliation(s)
- Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil.,Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
| | | | - Mônica Volino-Souza
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil.,Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
| | | | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil.,Postgraduate Program in Bioactive Products and Biosciences, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil.,Postgraduate Program in Food Science, Chemistry Institute, Federal University of Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
| |
Collapse
|
49
|
Soares RN, Murias JM, Saccone F, Puga L, Moreno G, Resnik M, De Roia GF. Effects of a rehabilitation program on microvascular function of CHD patients assessed by near-infrared spectroscopy. Physiol Rep 2019; 7:e14145. [PMID: 31190469 PMCID: PMC6562121 DOI: 10.14814/phy2.14145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 05/25/2019] [Indexed: 12/31/2022] Open
Abstract
This study aimed to evaluate whether near-infrared spectroscopy (NIRS)-derived reperfusion slope would detect the effects of a 12-week rehabilitation program on lower limb microvascular responsiveness in patients with coronary heart disease (CHD). Ten CHD patients (7 males and 3 females; 57.3 ± 7.6 years) underwent 12 weeks of drug treatment and high-intensity interval training (HIIT), 2 times per week (40 min/session). Microvascular responsiveness was assessed by using NIRS assessment of muscle oxygen saturation (StO2 ) combined with a vascular occlusion test (VOT) (NIRS-VOT). NIRS-VOT measures were taken at pre- and postintervention, and microvascular responsiveness was evaluated by examining the slope 2 of re-oxygenation rate (slope 2 StO2 ) and the area under the curve (StO2AUC ) of StO2 signal following cuff release subsequent to a 5-min occlusion period. The slope 2 StO2 was significantly steeper after 12 weeks of training (4.8 ± 1.6% sec-1 ) compared to the pretraining (3.1 ± 1.6% sec-1 ) (P < 0.05). The area under the curve for the change in the % StO2 signal during re-oxygenation increased significantly from 3494 ± 2372%∙sec at pretraining to 9006 ± 4311%∙sec at post-training (P < 0.05). NIRS-VOT technique detected the improvements of 12 weeks of rehabilitation program in the lower limb microvascular responsiveness of CHD patients.
Collapse
Affiliation(s)
| | - Juan M. Murias
- University of CalgaryFaculty of KinesiologyCalgaryAlbertaCanada
| | | | | | - Gustavo Moreno
- Sanatorio Dr. Julio MendezCABABuenos AiresArgentina
- CENARDCentro Nacional de Alto Rendimiento DeportivoCABABuenos AiresArgentina
| | - Miguel Resnik
- Sanatorio Dr. Julio MendezCABABuenos AiresArgentina
- CENARDCentro Nacional de Alto Rendimiento DeportivoCABABuenos AiresArgentina
| | | |
Collapse
|
50
|
Le Roux-Mallouf T, Laurent J, Besset D, Marillier M, Larribaut J, Belaidi E, Corne C, Doutreleau S, Verges S. Effects of acute nitric oxide precursor intake on peripheral and central fatigue during knee extensions in healthy men. Exp Physiol 2019; 104:1100-1114. [PMID: 31004378 DOI: 10.1113/ep087493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 04/18/2019] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? What is the effect of acute NO precursor intake on vascular function, muscle and cerebral oxygenation and peripheral and central neuromuscular fatigue during knee-extension exercise? What is the main finding and its importance? Acute NO precursor ingestion increases the plasma concentrations of NO precursors (nitrate, arginine and citrulline) and enhances post-ischaemic vasodilatation, but has no significant effect on muscle and cerebral oxygenation, peripheral and central mechanisms of neuromuscular fatigue and, consequently, does not improve exercise performance. ABSTRACT Nitric oxide (NO) plays an important role in matching blood flow to oxygen demand in the brain and contracting muscles during exercise. Previous studies have shown that increasing NO bioavailability can improve muscle function. The aim of this study was to assess the effect of acute NO precursor intake on muscle and cerebral oxygenation and on peripheral and central neuromuscular fatigue during exercise. In four experimental sessions, 15 healthy men performed a thigh ischaemia-reperfusion test followed by submaximal isometric knee extensions (5 s on-4 s off; 45% of maximal voluntary contraction) until task failure. In each session, subjects drank a nitrate-rich beetroot juice containing 520 mg nitrate (N), N and citrulline (6 g; N+C), N and arginine (6 g; N+A) or a placebo (PLA). Prefrontal cortex and quadriceps near-infrared spectroscopy parameters were monitored continuously. Transcranial magnetic stimulation and femoral nerve electrical stimulation were used to assess central and peripheral determinants of fatigue. The post-ischaemic increase in thigh blood total haemoglobin concentration was larger in N (10.1 ± 3.7 mmol) and N+C (10.9 ± 3.3 mmol) compared with PLA (8.2 ± 2.7 mmol; P < 0.05). Nitric oxide precursors had no significant effect on muscle and cerebral oxygenation or on peripheral and central mechanisms of neuromuscular fatigue during exercise. The total number of knee extensions did not differ between sessions (N, 71.9 ± 33.2; N+A, 73.3 ± 39.4; N+C, 74.6 ± 34.0; PLA, 71.8 ± 39.9; P > 0.05). In contrast to the post-ischaemic hyperaemic response, NO bioavailability in healthy subjects might not be the limiting factor for tissue perfusion and oxygenation during submaximal knee extensions to task failure.
Collapse
Affiliation(s)
| | - Julien Laurent
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France
| | - Dimitri Besset
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France
| | - Mathieu Marillier
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France
| | - Julie Larribaut
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France
| | - Elise Belaidi
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France
| | - Christelle Corne
- Inherited Metabolic Disease Laboratory, Department of Biochemistry, Molecular and Environmental Toxicology Biology, Biology and Pathology Institute, Hôpital Michallon, Grenoble, France
| | - Stéphane Doutreleau
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France.,Sport and Pathologies Unit, Grenoble Alpes University Hospital, Hôpital Michallon, Grenoble, France
| | - Samuel Verges
- Laboratoire HP2 (U1042 INSERM), Université, Grenoble Alpes, Grenoble, France.,Sport and Pathologies Unit, Grenoble Alpes University Hospital, Hôpital Michallon, Grenoble, France
| |
Collapse
|