1
|
Yano Y, Suematsu Y, Matsuda T, Tsukahara K, Shirosaki M, Matsuo S, Fujimi K, Miura SI. Usefulness of the cardiopulmonary exercise test up to the anaerobic threshold for pati-ents aged ≥ 80 years with cardiovascular disease on cardiac rehabilitation. J Rehabil Med 2024; 56:jrm19453. [PMID: 38898677 PMCID: PMC11210489 DOI: 10.2340/jrm.v56.19453] [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: 09/15/2023] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
OBJECTIVE A cardiopulmonary exercise test provides information regarding appropriate exercise intensity, but there have been few reports on its use in patients over 80 years of age. DESIGN Retrospective observational study. PATIENTS A total of 511 cardiovascular disease patients who performed a cardiopulmonary exercise test from February 2011 to January 2020 were investigated. METHODS Patients were stratified according to age: < 70 years, 70-79 years, and ≥ 80 years, and the results of the cardiopulmonary exercise test up to anaerobic threshold were compared. RESULTS Patients in the < 70 age bracket showed higher oxygen consumption, carbon dioxide output, and ventilatory volume and lower ventilation equivalents per oxygen consumption and carbon dioxide output in all time periods. However, there were no significant differences in these parameters or the work rate (70-79 years of age: 41.4 ± 11.7 watts, vs ≥ 80 years: 42.2 ± 10.9 watts, p = 0.95) or oxygen consumption per body weight at anaerobic threshold (12.2 ± 0.2 ml/min/kg, vs 12.1 ± 0.4 ml/min/kg, p = 0.97) between the 70-79 year age bracket and the ≥ 80 year age bracket. CONCLUSION Even for cardiovascular disease patients age ≥ 80 years, a cardiopulmonary exercise test up to anaerobic threshold can supply useful information for guiding cardiac rehabilitation.
Collapse
Affiliation(s)
- Yuiko Yano
- Department of Cardiology, Fukuoka University Hospital, Fukuoka, Japan; Miyase Clinic, Fukuoka, Japan (Present affiliation)
| | - Yasunori Suematsu
- Department of Cardiology, Fukuoka University Hospital, Fukuoka, Japan
| | - Takuro Matsuda
- Department of Rehabilitation, Fukuoka University Hospital, Fukuoka, Japan
| | - Kai Tsukahara
- Department of Cardiology, Fukuoka University Hospital, Fukuoka, Japan; Hinoki Clinic, Fukuoka, Japan (Present affiliation)
| | - Miki Shirosaki
- Department of Rehabilitation, Fukuoka University Hospital, Fukuoka, Japan
| | - Sakiko Matsuo
- Department of Nutrition, Fukuoka University Hospital, Fukuoka, Japan
| | - Kanta Fujimi
- Department of Cardiology, Fukuoka University Hospital, Fukuoka, Japan; Department of Rehabilitation, Fukuoka University Hospital, Fukuoka, Japan
| | - Shin-Ichiro Miura
- Department of Cardiology, School of Medicine, Fukuoka University, Fukuoka, Japan; Department of Cardiology, Fukuoka University Nishijin Hospital, Fukuoka, Japan.
| |
Collapse
|
2
|
Kasiak P, Kowalski T, Rębiś K, Klusiewicz A, Ładyga M, Sadowska D, Wilk A, Wiecha S, Barylski M, Poliwczak AR, Wierzbiński P, Mamcarz A, Śliż D. Is the Ventilatory Efficiency in Endurance Athletes Different?-Findings from the NOODLE Study. J Clin Med 2024; 13:490. [PMID: 38256624 PMCID: PMC10816682 DOI: 10.3390/jcm13020490] [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: 12/09/2023] [Revised: 01/13/2024] [Accepted: 01/14/2024] [Indexed: 01/24/2024] Open
Abstract
Background: Ventilatory efficiency (VE/VCO2) is a strong predictor of cardiovascular diseases and defines individuals' responses to exercise. Its characteristics among endurance athletes (EA) remain understudied. In a cohort of EA, we aimed to (1) investigate the relationship between different methods of calculation of VE/VCO2 and (2) externally validate prediction equations for VE/VCO2. Methods: In total, 140 EA (55% males; age = 22.7 ± 4.6 yrs; BMI = 22.6 ± 1.7 kg·m-2; peak oxygen uptake = 3.86 ± 0.82 L·min-1) underwent an effort-limited cycling cardiopulmonary exercise test. VE/VCO2 was first calculated to ventilatory threshold (VE/VCO2-slope), as the lowest 30-s average (VE/VCO2-Nadir) and from whole exercises (VE/VCO2-Total). Twelve prediction equations for VE/VCO2-slope were externally validated. Results: VE/VCO2-slope was higher in females than males (27.7 ± 2.6 vs. 26.1 ± 2.0, p < 0.001). Measuring methods for VE/VCO2 differed significantly in males and females. VE/VCO2 increased in EA with age independently from its type or sex (β = 0.066-0.127). Eleven equations underestimated VE/VCO2-slope (from -0.5 to -3.6). One equation overestimated VE/VCO2-slope (+0.2). Predicted and observed measurements differed significantly in nine models. Models explained a low amount of variance in the VE/VCO2-slope (R2 = 0.003-0.031). Conclusions: VE/VCO2-slope, VE/VCO2-Nadir, and VE/VCO2-Total were significantly different in EA. Prediction equations for the VE/VCO2-slope were inaccurate in EA. Physicians should be acknowledged to properly assess cardiorespiratory fitness in EA.
Collapse
Affiliation(s)
- Przemysław Kasiak
- 3rd Department of Internal Medicine and Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Tomasz Kowalski
- Department of Physiology, Institute of Sport—National Research Institute, 01-982 Warsaw, Poland
| | - Kinga Rębiś
- Department of Physiology, Institute of Sport—National Research Institute, 01-982 Warsaw, Poland
| | - Andrzej Klusiewicz
- Department of Physical Education and Health in Biala Podlaska, Branch in Biala Podlaska, Jozef Pilsudski University of Physical Education, 00-968 Warsaw, Poland
| | - Maria Ładyga
- Department of Physiology, Institute of Sport—National Research Institute, 01-982 Warsaw, Poland
| | - Dorota Sadowska
- Department of Physiology, Institute of Sport—National Research Institute, 01-982 Warsaw, Poland
| | - Adrian Wilk
- Department of Kinesiology, Institute of Sport—National Research Institute, 01-982 Warsaw, Poland
| | - Szczepan Wiecha
- Department of Physical Education and Health in Biala Podlaska, Branch in Biala Podlaska, Jozef Pilsudski University of Physical Education, 00-968 Warsaw, Poland
| | - Marcin Barylski
- Department of Internal Medicine and Cardiac Rehabilitation, Medical University of Lodz, 90-419 Lodz, Poland
| | - Adam Rafał Poliwczak
- Department of Internal Medicine and Cardiac Rehabilitation, Medical University of Lodz, 90-419 Lodz, Poland
| | - Piotr Wierzbiński
- 3rd Department of Internal Medicine and Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Artur Mamcarz
- 3rd Department of Internal Medicine and Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Daniel Śliż
- 3rd Department of Internal Medicine and Cardiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| |
Collapse
|
3
|
Akiyama H, Watanabe D, Miyachi M. Estimated standard values of aerobic capacity according to sex and age in a Japanese population: A scoping review. PLoS One 2023; 18:e0286936. [PMID: 37713405 PMCID: PMC10503723 DOI: 10.1371/journal.pone.0286936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/04/2023] [Indexed: 09/17/2023] Open
Abstract
Aerobic capacity is a fitness measure reflecting the ability to sustain whole-body physical activity as fast and long as possible. Identifying the distribution of aerobic capacity in a population may help estimate their health status. This study aimed to estimate standard values of aerobic capacity (peak oxygen uptake [Formula: see text] and anaerobic threshold [AT]/kg) for the Japanese population stratified by sex and age using a meta-analysis. Moreover, the comparison of the estimated standard values of the Japanese with those of other populations was performed as a supplementary analysis. We systematically searched original articles on aerobic capacity in the Japanese population using PubMed, Ichushi-Web, and Google Scholar. We meta-analysed [Formula: see text] (total: 78,714, men: 54,614, women: 24,100) and AT (total: 4,042, men: 1,961, women: 2,081) data of healthy Japanese from 21 articles by sex and age. We also searched, collected and meta-analysed data from other populations. Means and 95% confidence intervals were calculated. The estimated standard values of [Formula: see text] (mL/kg/min) for Japanese men and women aged 4-9, 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, and 70-79 years were 47.6, 51.2, 43.2, 37.2, 34.5, 31.7, 28.6, and 26.3, and 42.0, 43.2, 33.6, 30.6, 27.4, 25.6, 23.4, and 23.1, respectively. The AT/kg (mL/kg/min) for Japanese men and women aged 20-29, 30-39, 40-49, 50-59, 60-69, and 70-79 years were 21.1, 18.3, 16.8, 15.9, 15.8, and 15.2, and 17.4, 17.0, 15.7, 15.0, 14.5, and 14.2, respectively. Herein, we presented the estimated standard values of aerobic capacity according to sex and age in a Japanese population. In conclusion, aerobic capacity declines with ageing after 20-29 years of age. Additionally, aerobic capacity is lower in the Japanese population than in other populations across a wide range of age groups. Standard value estimation by meta-analysis can be conducted in any country or region and for public health purposes.
Collapse
Affiliation(s)
- Hiroshi Akiyama
- Graduate School of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan
| | - Daiki Watanabe
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan
| | - Motohiko Miyachi
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan
| |
Collapse
|
4
|
Ashikaga K, Itoh H, Maeda T, Ichikawa Y, Tanaka S, Koike A, Makita S, Omiya K, Kato Y, Adachi H, Nagayama M, Akashi YJ. Age- and sex-stratified normal values for circulatory and ventilatory power during ramp exercise derived from a healthy Japanese population. Heart Vessels 2023:10.1007/s00380-023-02258-5. [PMID: 36932249 DOI: 10.1007/s00380-023-02258-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 03/01/2023] [Indexed: 03/19/2023]
Abstract
Circulatory power (CP) and ventilatory power (VP), obtained by cardiopulmonary exercise testing (CPX), have been suggested to be excellent prognostic markers for heart failure. However, the normal values of these parameters in healthy Japanese populations remain unknown; thus, we aimed to investigate these values in such a population. A total of 391 healthy Japanese participants, 20-78 years of age, underwent CPX with a cycle ergometer with ramp protocols. Systolic blood pressure (SBP), heart rate, oxygen uptake ([Formula: see text]O2) at peak exercise, and the slope of minute ventilation ([Formula: see text]E) versus carbon dioxide ([Formula: see text]CO2) ([Formula: see text]E vs. [Formula: see text]CO2 slope) were measured. CP was calculated by multiplying the peak [Formula: see text]O2 and SBP values, and VP was calculated by dividing the peak SBP value by the [Formula: see text]E versus [Formula: see text]CO2 slope. For males and females, the average CP values were 6119 ± 1280 (mean ± standard deviation) and 4775 ± 914 mmHg·mL/min/kg, respectively (p < 0.001). The average VP values for males and females were 8.0 ± 1.3 and 6.9 ± 1.3 mmHg (p < 0.001). CP decreased with age in both sexes. VP increased with age in females, with no significant change in males. We calculated the normal values for CP and VP in a healthy Japanese population. The results can contribute to the evaluation of patients' CPX results as a reference.
Collapse
Affiliation(s)
- Kohei Ashikaga
- Department of Sports Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan.
| | - Haruki Itoh
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Tomoko Maeda
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Yuri Ichikawa
- Department of Medical Technology, School of Health Science, Tokyo University of Technology, Tokyo, Japan
| | - Shiori Tanaka
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Akira Koike
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Shigeru Makita
- Department of Cardiac Rehabilitation, Saitama University International Medical Center, Saitama, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Kazuto Omiya
- Shimazu Medical Clinic, Kawasaki, Kanagawa, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Yuko Kato
- Department of Cardiology, The Cardiovascular Institute, Tokyo, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Hitoshi Adachi
- Division of Cardiology, Gunma Prefectural Cardiovascular Center, Gunma, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Masatoshi Nagayama
- Ichinohashi Clinic, Tokyo, Japan.,Committee On Exercise Prescription for Patients (CEPP), Tokyo, Japan
| | - Yoshihiro J Akashi
- Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | | |
Collapse
|
5
|
Oxygen Uptake Efficiency Slope in South American Healthy Adults: COMPREHENSIVE REFERENCE VALUES AND INTERNATIONAL COMPARISONS. J Cardiopulm Rehabil Prev 2023:01273116-990000000-00074. [PMID: 36862113 DOI: 10.1097/hcr.0000000000000778] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
PURPOSE The purpose of this study is to provide comprehensive reference values for oxygen uptake efficiency slope (OUES) in healthy adults. International heterogeneity was also explored through published databases. METHODS A cross-sectional study was conducted with treadmill cardiopulmonary exercise testing (CPX) from a Brazilian healthy adult sample, in which absolute OUES and values normalized by weight and body surface area (BSA) were calculated. Data were stratified by sex and age group. Prediction equations were calculated using age and anthropometric variables. International data were pooled and differences were explored using factorial analysis of variance or the t test, as appropriate. The OUES age-related patterns were calculated using regression analysis. RESULTS A total of 3544 CPX were included (1970 males and 1574 females) and the age ranged from 20-80 yr. Males had higher values than females for OUES, OUES/kg, and OUES/BSA. Lower values were found with aging and the data followed a quadratic regression curve. Reference value tables and predictive equations were provided for absolute and normalized OUES in both sexes. International comparisons of absolute OUES values among Brazilian, European, and Japanese data revealed substantial heterogeneity. The OUES/BSA measure minimized the discrepancies between Brazilian and European data. CONCLUSIONS Our study provided comprehensive OUES reference values in a large healthy adult sample from South America with a wide age range and included absolute and normalized values. Differences observed between Brazilian and European data were reduced in the BSA-normalized OUES.
Collapse
|
6
|
Ashikaga K, Itoh H, Maeda T, Itoh H, Tanaka S, Ichikawa Y, Nagayama M, Akashi YJ, Isobe M. Usefulness of the predicted percentage ventilatory efficiency for carbon dioxide output during exercise in patients with chronic heart failure. Heart Vessels 2023; 38:56-65. [PMID: 35895151 DOI: 10.1007/s00380-022-02132-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/29/2022] [Indexed: 01/06/2023]
Abstract
The ventilatory efficiency for carbon dioxide output ([Formula: see text]CO2) during exercise, as measured by the minute ventilation vs. [Formula: see text]CO2 slope ([Formula: see text]E vs. [Formula: see text]CO2 slope), is a powerful prognostic index in patients with chronic heart failure (CHF). This measurement is higher in women than in men, and it increases with age. This study aimed to investigate the usefulness of the predicted value of the percentage [Formula: see text]E vs. [Formula: see text]CO2 slope (%[Formula: see text]E vs. [Formula: see text]CO2 slope) as a prognostic index in patients with CHF. A total of 320 patients with CHF and a left ventricular ejection fraction (LVEF) < 45% (male, 85.6%; mean age, 64.6 years) who underwent symptom-limited cardiopulmonary exercise tests using a cycle ergometer were included in the study. The %[Formula: see text]E vs. [Formula: see text]CO2 was calculated using predictive formulae based on age and sex. Cardiovascular-related death was defined as the primary endpoint. The mean follow-up duration was 7.5 ± 3.3 years. Of 101 patients who died during the study period, 75 experienced cardiovascular-related deaths. The average [Formula: see text]E vs. [Formula: see text]CO2 slope was 32.8 ± 8.0, and the average %[Formula: see text]E vs. [Formula: see text]CO2 slope was 119.6 ± 28.2%. The cumulative incidence of cardiovascular-related death after 10 years of follow-up were 44.7% (95% CI 34.4-54.6%) in patients with %[Formula: see text]E vs. [Formula: see text]CO2 slope > 120 and 15.0% (95% CI 9.4-21.8%) in patients with %[Formula: see text]E vs. [Formula: see text]CO2 slope ≤ 120. The multivariate Cox regression analysis indicated that a %[Formula: see text]E vs. [Formula: see text]CO2 slope > 120 was an independent predictor of cardiovascular-related death (adjusted hazard ratio, 3.24; 95% confidence interval 1.65-6.67; p < 0.01). The %[Formula: see text]E vs. [Formula: see text]CO2 slope can be used for risk stratification in patients with CHF and an LVEF < 45%.
Collapse
Affiliation(s)
- Kohei Ashikaga
- Department of Cardiology, Sakakibara Heart Institute, Fuchu, Tokyo, Japan. .,Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan. .,Department of Sports Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyakaeku, Kawasaki, Kanagawa, 216-8511, Japan.
| | - Haruki Itoh
- Department of Cardiology, Sakakibara Heart Institute, Fuchu, Tokyo, Japan
| | - Tomoko Maeda
- Department of Clinical Laboratory, Sakakibara Heart Institute Clinic, Tokyo, Japan
| | - Hidetaka Itoh
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shiori Tanaka
- Department of Clinical Laboratory, Sakakibara Heart Institute, Fuchu, Tokyo, Japan
| | - Yuri Ichikawa
- Department of Medical Technology, School of Health Science, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - Masatoshi Nagayama
- Department of Cardiology, Sakakibara Heart Institute, Fuchu, Tokyo, Japan
| | - Yoshihiro J Akashi
- Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Mitsuaki Isobe
- Department of Cardiology, Sakakibara Heart Institute, Fuchu, Tokyo, Japan
| |
Collapse
|
7
|
Makita S, Yasu T, Akashi YJ, Adachi H, Izawa H, Ishihara S, Iso Y, Ohuchi H, Omiya K, Ohya Y, Okita K, Kimura Y, Koike A, Kohzuki M, Koba S, Sata M, Shimada K, Shimokawa T, Shiraishi H, Sumitomo N, Takahashi T, Takura T, Tsutsui H, Nagayama M, Hasegawa E, Fukumoto Y, Furukawa Y, Miura SI, Yasuda S, Yamada S, Yamada Y, Yumino D, Yoshida T, Adachi T, Ikegame T, Izawa KP, Ishida T, Ozasa N, Osada N, Obata H, Kakutani N, Kasahara Y, Kato M, Kamiya K, Kinugawa S, Kono Y, Kobayashi Y, Koyama T, Sase K, Sato S, Shibata T, Suzuki N, Tamaki D, Yamaoka-Tojo M, Nakanishi M, Nakane E, Nishizaki M, Higo T, Fujimi K, Honda T, Matsumoto Y, Matsumoto N, Miyawaki I, Murata M, Yagi S, Yanase M, Yamada M, Yokoyama M, Watanabe N, Ito H, Kimura T, Kyo S, Goto Y, Nohara R, Hirata KI. JCS/JACR 2021 Guideline on Rehabilitation in Patients With Cardiovascular Disease. Circ J 2022; 87:155-235. [PMID: 36503954 DOI: 10.1253/circj.cj-22-0234] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shigeru Makita
- Department of Cardiac Rehabilitation, Saitama Medical University International Medical Center
| | - Takanori Yasu
- Department of Cardiovascular Medicine and Nephrology, Dokkyo Medical University Nikko Medical Center
| | - Yoshihiro J Akashi
- Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine
| | - Hitoshi Adachi
- Department of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Hideo Izawa
- Department of Cardiology, Fujita Health University of Medicine
| | - Shunichi Ishihara
- Department of Psychology, Bunkyo University Faculty of Human Sciences
| | - Yoshitaka Iso
- Division of Cardiology, Showa University Fujigaoka Hospital
| | - Hideo Ohuchi
- Department of Pediatrics, National Cerebral and Cardiovascular Center
| | | | - Yusuke Ohya
- Department of Cardiovascular Medicine, Nephrology and Neurology, Graduate School of Medicine, University of the Ryukyus
| | - Koichi Okita
- Graduate School of Lifelong Sport, Hokusho University
| | - Yutaka Kimura
- Department of Health Sciences, Kansai Medical University Hospital
| | - Akira Koike
- Department of Cardiology, Faculty of Medicine, University of Tsukuba
| | - Masahiro Kohzuki
- Department of Internal Medicine and Rehabilitation Science, Tohoku University Graduate School of Medicine
| | - Shinji Koba
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
| | - Masataka Sata
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences
| | - Kazunori Shimada
- Department of Cardiology, Juntendo University School of Medicine
| | | | - Hirokazu Shiraishi
- Department of Cardiovascular Medicine, Kyoto Prefectural University of Medicine
| | - Naokata Sumitomo
- Department of Pediatric Cardiology, Saitama Medical University International Medical Center
| | - Tetsuya Takahashi
- Department of Physical Therapy, Faculty of Health Science, Juntendo University
| | - Tomoyuki Takura
- Department of Healthcare Economics and Health Policy, Graduate School of Medicine, The University of Tokyo
| | - Hiroyuki Tsutsui
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University
| | | | - Emiko Hasegawa
- Faculty of Psychology and Social Welfare, Seigakuin University
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Yutaka Furukawa
- Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital
| | | | - Satoshi Yasuda
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
| | - Sumio Yamada
- Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine
| | - Yuichiro Yamada
- Center for Diabetes, Endocrinology and Metabolism, Kansai Electric Power Hospital
| | | | | | - Takuji Adachi
- Department of Physical Therapy, Nagoya University Graduate School of Medicine
| | | | | | | | - Neiko Ozasa
- Cardiovascular Medicine, Kyoto University Hospital
| | - Naohiko Osada
- Department of Physical Checking, St. Marianna University Toyoko Hospital
| | - Hiroaki Obata
- Division of Internal Medicine, Niigata Minami Hospital.,Division of Rehabilitation, Niigata Minami Hospital
| | | | - Yusuke Kasahara
- Department of Rehabilitation, St. Marianna University Yokohama Seibu Hospital
| | - Masaaki Kato
- Department of Cardiovascular Surgery, Morinomiya Hospital
| | - Kentaro Kamiya
- Department of Rehabilitation, School of Allied Health Sciences, Kitasato University
| | - Shintaro Kinugawa
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University
| | - Yuji Kono
- Department of Rehabilitation, Fujita Health University Hospital
| | - Yasuyuki Kobayashi
- Department of Medical Technology, Gunma Prefectural Cardiovascular Center
| | | | - Kazuhiro Sase
- Clinical Pharmacology and Regulatory Science, Graduate School of Medicine, Juntendo University
| | - Shinji Sato
- Department of Physical Therapy, Teikyo Heisei University
| | - Tatsuhiro Shibata
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Norio Suzuki
- Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine
| | - Daisuke Tamaki
- Department of Nutrition, Showa University Fujigaoka Hospital
| | - Minako Yamaoka-Tojo
- Department of Rehabilitation, School of Allied Health Sciences, Kitasato University
| | - Michio Nakanishi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | | | - Mari Nishizaki
- Department of Rehabilitation, National Hospital Organization Okayama Medical Center
| | - Taiki Higo
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University
| | - Kanta Fujimi
- Department of Rehabilitation, Fukuoka University Hospital
| | - Tasuku Honda
- Department of Cardiovascular Surgery, Hyogo Brain and Heart Center
| | - Yasuharu Matsumoto
- Department of Cardiovascular Medicine, Shioya Hospital, International University of Health and Welfare
| | | | - Ikuko Miyawaki
- Department of Nursing, Kobe University Graduate School of Health Sciences
| | - Makoto Murata
- Department of Cardiology, Gunma Prefectural Cardiovascular Center
| | - Shusuke Yagi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences
| | - Masanobu Yanase
- Department of Transplantation, National Cerebral and Cardiovascular Center
| | | | - Miho Yokoyama
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | | | | | - Takeshi Kimura
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine
| | - Syunei Kyo
- Tokyo Metropolitan Geriatric Medical Center
| | | | | | - Ken-Ichi Hirata
- Department of Internal Medicine, Kobe University Graduate School of Medicine
| | | |
Collapse
|
8
|
Estimation of Tidal Volume during Exercise Stress Test from Wearable-Device Measures of Heart Rate and Breathing Rate. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12115441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Tidal volume (TV), defined as the amount of air that moves in or out of the lungs with each respiratory cycle, is important in evaluating the respiratory function. Although TV can be reliably measured in laboratory settings, this information is hardly obtainable under everyday living conditions. Under such conditions, wearable devices could provide valuable support to monitor vital signs, such as heart rate (HR) and breathing rate (BR). The aim of this study was to develop a model to estimate TV from wearable-device measures of HR and BR during exercise. HR and BR were acquired through the Zephyr Bioharness 3.0 wearable device in nine subjects performing incremental cycling tests. For each subject, TV during exercise was obtained with a metabolic cart (Cosmed). A stepwise regression algorithm was used to create the model using as possible predictors HR, BR, age, and body mass index; the model was then validated using a leave-one-subject-out cross-validation procedure. The performance of the model was evaluated using the explained variance (R2), obtaining values ranging from 0.65 to 0.72. The proposed model is a valid method for TV estimation with wearable devices and can be considered not subject-specific and not instrumentation-specific.
Collapse
|
9
|
Miyazawa R, Iso Y, Tsujiuchi M, Shoji M, Takahashi T, Koba S, Ebato M, Miyagawa T, Geshi E, Suzuki H. Potential Association of Circulating MicroRNA-181c and MicroRNA-484 Levels with Cardiorespiratory Fitness after Myocardial Infarction: A Pilot Study. Prog Rehabil Med 2021; 6:20210017. [PMID: 33768186 PMCID: PMC7972949 DOI: 10.2490/prm.20210017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/03/2021] [Indexed: 11/11/2022] Open
Abstract
Objectives: In the field of exercise physiology, there has been great interest in exploring circulating microRNAs (miRs) as potential biomarkers. However, it remains to be determined whether circulating miRs reflect cardiorespiratory fitness. The aim of this study was to investigate the association between circulating levels of specific miRs and cardiorespiratory fitness evaluated by cardiopulmonary exercise testing (CPET) after acute myocardial infarction (MI). Methods: Twenty patients who had had an acute MI were included. All patients underwent CPET in the convalescent phase. Quantitative real-time polymerase chain reaction analyses for miR-181 members (a/b/c) and miR-484 were performed to determine the expression levels in the peripheral blood of the included patients and healthy control subjects (n=5). Results: Post-MI patients showed impaired exercise tolerance and ventilatory efficiency in CPET analysis. Compared with controls, circulating levels of miR-181a and 181c were gradually and significantly elevated through the 1st to 7th days after acute MI, whereas miR-181b and miR-484 were not. Circulating miR levels did not correlate with clinical or echocardiographic parameters. However, circulating levels of miR-181c and miR-484 on the 7th day showed significant positive correlations with the anaerobic threshold and peak oxygen consumption from CPET analysis. Moreover, miR-181c levels were inversely associated with the ventilatory inefficiency index. Patients with high exercise capacity after MI showed significantly higher expressions of circulating miR-181c and miR-484 than those with low exercise capacity. Conclusions: The results of this pilot study suggest that circulating levels of miR-181c and miR-484 after acute MI may be predictive biomarkers of post-MI cardiorespiratory fitness.
Collapse
Affiliation(s)
- Ryo Miyazawa
- Center for Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan.,Showa University Graduate School of Health Sciences, Yokohama, Japan
| | - Yoshitaka Iso
- Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Yokohama, Japan.,Division of Cardiology, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan
| | - Miki Tsujiuchi
- Division of Cardiology, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan
| | - Makoto Shoji
- Division of Cardiology, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan
| | | | - Shinji Koba
- Division of Cardiology, Department of Medicine, Showa University Hospital, Tokyo, Japan
| | - Mio Ebato
- Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Tetsuo Miyagawa
- Showa University Graduate School of Health Sciences, Yokohama, Japan
| | - Eiichi Geshi
- Showa University Graduate School of Health Sciences, Yokohama, Japan
| | - Hiroshi Suzuki
- Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Yokohama, Japan
| |
Collapse
|