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  1. Article: Borg's exertion scale did not coincide with ventilatory anaerobic threshold in atrial fibrillation patients with restored sinus rhythm after ablation.

    Nishimura, Saori / Tanaka, Ryou / Kamikawa, Shigeshi / Waki, Isao / Yamashita, Daiki / Tabita, Natsumi / Higashiya, Shunichi / Yamaji, Hirosuke / Murakami, Takashi / Kusachi, Shozo

    Journal of exercise rehabilitation

    2024  Volume 20, Issue 2, Page(s) 83–90

    Abstract: The determination of precise exercise intensity is essential for effective exercise rehabilitation. The Borg rating of perceived exertion category ratio (CR) scale is utilized to prescribe an appropriate level of exertion intensity. A Borg CR of ... ...

    Abstract The determination of precise exercise intensity is essential for effective exercise rehabilitation. The Borg rating of perceived exertion category ratio (CR) scale is utilized to prescribe an appropriate level of exertion intensity. A Borg CR of approximately 13 coincides with the ventilatory aerobic threshold (VAT). Patients with atrial fibrillation (AF) exhibit various symptoms. We hypothesized that the workload at Borg CR13 (Borg CR13-Watt) differs from the workload at the VAT level (VAT-Watt) in AF patients with restored sinus rhythm (SR) following ablation. Accordingly, the relationship between Borg CR13-Watt and VAT-Watt was studied in patients with restored SR. Cardiopulmonary exercise testing (CPET) was performed at 101±88 days after ablation in 150 patients using a bicycle ergometer. No adverse events were observed during CPET. Borg CR13-Watt was significantly higher than VAT-Watt (67.2±27.8 Watt vs. 54.7±17.6 Watt,
    Language English
    Publishing date 2024-04-26
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2756291-8
    ISSN 2288-1778 ; 2288-176X
    ISSN (online) 2288-1778
    ISSN 2288-176X
    DOI 10.12965/jer.2448056.028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Reproducibility of cardiopulmonary exercise testing between one after and 1-3 weeks after elective percutaneous coronary intervention.

    Tanaka, Ryou / Waki, Isao / Kamikawa, Shigeshi / Yamashita, Daiki / Tabita, Natsumi / Nishimura, Saori / Higashiya, Shunich / Yamaji, Hirosuke / Murakami, Takashi / Kusachi, Shozo

    Journal of exercise rehabilitation

    2023  Volume 19, Issue 5, Page(s) 268–274

    Abstract: Prompt prescription and early initiation of exercise training are essential for patients undergoing elective percutaneous coronary intervention (PCI). We hypothesized that cardiopulmonary exercise testing (CPET) parameters determined the day after ... ...

    Abstract Prompt prescription and early initiation of exercise training are essential for patients undergoing elective percutaneous coronary intervention (PCI). We hypothesized that cardiopulmonary exercise testing (CPET) parameters determined the day after elective PCI during hospitalization would not differ from those obtained 1-3 weeks post-PCI in patients with stable coronary heart disease (CHD). CPET was performed the day after and 1-3 weeks (13±4.6; 7-21 days) after PCI. CPET was performed with a bicycle ergometer up to the ventilatory aerobic threshold (VAT) on the day after PCI. Symptom-limited CPET was conducted 1-3 weeks after PCI. No complications arose from the tests. There were no significant differences in %VAT (next day: 88.6±16.7 vs. 1-3 weeks later: 91.4%±18.7%), the workload at the VAT (51.8±11.0 W vs. 52.9± 11.6 W), heart rate (HR) at the VAT (95.3±105 beats/min vs. 94.1±11.3 beats/min), or metabolic equivalent (METs) at the VAT (3.69±0.69 vs. 3.84±0.78) between the two sessions. The slope of linear regression for two repeated measurements was close to 1 (%VAT, 1.02; workload at the VAT, 0.95; METs at the VAT, 1.03), except for HR (0.70). Bland-Altman plots revealed the reproducibility of all four CPET measurements between the two sessions. In conclusion, CPET up to the VAT can be performed safely 1-day post-PCI in patients with stable CHD. CPET parameters do not significantly differ between testing performed the day after and 1-3 weeks after PCI. Next-day CPET during hospitalization after PCI may enable prompt exercise prescription without the need for another CPET 1-3 weeks later.
    Language English
    Publishing date 2023-10-25
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2756291-8
    ISSN 2288-1778 ; 2288-176X
    ISSN (online) 2288-1778
    ISSN 2288-176X
    DOI 10.12965/jer.2346376.188
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Correlation of the peak oxygen consumption and ventilatory aerobic threshold by cardiopulmonary exercise testing with atrial fibrillation recurrences after ablation in patients with paroxysmal atrial fibrillation.

    Yamashita, Daiki / Kamikawa, Shigeshi / Tanaka, Ryou / Tabita, Natsumi / Nishimura, Saori / Mitsuoka, Miyuki / Higashiya, Shunich / Yamaji, Hirosuke / Murakami, Takashi / Hina, Kazuyoshi / Kusachi, Shozo

    Journal of arrhythmia

    2020  Volume 36, Issue 3, Page(s) 456–463

    Abstract: Background: The cardiopulmonary function is hypothesized to be associated with atrial fibrillation/atrial tachyarrhythmia (AF/AT) recurrence after AF ablation.: Purpose: To clarify the relationship between the cardiopulmonary function after ... ...

    Abstract Background: The cardiopulmonary function is hypothesized to be associated with atrial fibrillation/atrial tachyarrhythmia (AF/AT) recurrence after AF ablation.
    Purpose: To clarify the relationship between the cardiopulmonary function after successful ablation and AF/AT recurrence.
    Methods: We examined 31 patients with paroxysmal AF who underwent AF ablation. Cardiopulmonary exercise testing (CPET) was performed at 1month after the ablation. A continuously increasing loading method on a bicycle ergometer was employed for the CPET.
    Results: No adverse events, including AF/AT recurrence, occurred during the CPET. Among 31 patients, AT/AF recurrence was observed in seven (23%). The ventilatory anaerobic threshold (VAT) and peak oxygen consumption (VO2) were significantly higher in patients without AF/AT recurrence than in those with AT/AF recurrences (peak VO2 23.6 ± 5.7 vs 17.2 ± 4.1 mL/kg/min; VAT, 16.7 ± 2.8 vs 13.8 ± 2.7 mL/min/kg). The areas under the receiver operating characteristic curve for the peak VO2 and VAT were 0.786 (
    Conclusions: The present pilot study found that CPET can be performed safely at approximately 1 month after AF ablation. The peak VO2 and VAT were significantly associated with AT/AF recurrence. The peak VO2 and VAT were thought to provide helpful information regarding AT/AF recurrence.
    Language English
    Publishing date 2020-05-05
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2696593-8
    ISSN 1883-2148 ; 1880-4276
    ISSN (online) 1883-2148
    ISSN 1880-4276
    DOI 10.1002/joa3.12350
    Database MEDical Literature Analysis and Retrieval System OnLINE

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