Eric Poon

1 month ago | nature.com | Eric Poon |Waris Wongpipit |Wachirawit Phongchin |Thitipat Reun-Arom |Ravisara Trongjitpituk |Suthana Tingsabhat

Rope skipping is a cost-effective, moderate-to-vigorous-intensity aerobic exercise. While high-intensity interval exercise (HIIE) and moderate-intensity continuous exercise (MICE) are known to improve cardiorespiratory fitness (CRF) in labs, their effects in free-living conditions with rope skipping in young adults are unclear. The purpose of the study was to examine the effects of HIIE and MICE using rope skipping on CRF, body composition, and enjoyment in young adults. Fifty-nine healthy adults (29 females; aged 21.7 ± 2.5 years) were randomly assigned to HIIE (9 × 2-min bouts at 80% HRmax with 1-min active recovery), MICE (30-min at 70% HRmax), or a non-exercise control group (CONT). HIIE sessions occurred three times weekly, MICE five times weekly, over 8 weeks. Maximal oxygen uptake (a measure of CRF) was assessed both before and after the intervention. Enjoyment was evaluated using the Physical Activity Enjoyment Scale following the first and final sessions. After 8 weeks, both HIIE [48.4 (43.9, 52.9) mL/kg/min; mean (95%CI)] and MICE [47.2 (43.1, 51.1) mL/kg/min] groups showed significantly better CRF than pretest [43.8 (38.8, 48.8) mL/kg/min, p < 0.001, and 42.2 (38.1, 46.2) mL/kg/min, p < 0.001, respectively] and the CONT group [39.9 (37.0, 42.8) mL/kg/min, p < 0.001, η2p = 0.595]. Body composition did not differ among or within groups. Enjoyment levels also did not differ between or within exercise groups. HIIE and MICE using rope skipping similarly enhanced CRF and provided comparable enjoyment in young adults. HIIE could be a time-efficient alternative to MICE for those with limited exercise time. TCTR20220314004, thaiclinicaltrials.org

Nov 26, 2024 | catalyst.nejm.org | Jackie Gerhart |Eric Poon |Bob Kocher |Stephen Morrissey

How to overcome the fear of using AI technology in health care and the benefits it can have in practice. For permission requests, please contact NEJM Reprints at [email protected] NotesJackie Gerhart, Eric Poon, and Bob Kocher have nothing to disclose. Stephen Morrissey is the Executive Managing Editor for the New England Journal of Medicine. Thomas H.

Nov 12, 2024 | catalyst.nejm.org | Eric Poon

How can ambient AI revolutionize the way we interact with patients and streamline clinical workflows in medicine? For permission requests, please contact NEJM Reprints at [email protected] NotesEric Poon has nothing to disclose.

Aug 19, 2024 | nature.com | Eric Poon |Yuxin Guo |Yan Huang |Qian Li |Kit Ho |Yuying Su | +3 more

Sprint interval training (SIT) is a potent exercise strategy to enhance athletes’ anaerobic capacity in a time-efficient manner. This study aimed to investigate the impact of low-volume, court-based SIT on the anaerobic capacity and sport-specific performance in competitive tennis players. Twenty-four competitive collegiate tennis players were randomly assigned to either the SIT group (n = 12; three sessions per week of court-based repeated-sprint training) or the traditional endurance training (ET) group (n = 12; three sessions per week of 45-min continuous treadmill running, n = 12) for a 6-weeks intervention. Baseline and post-intervention assessments included the Wingate Anaerobic Test, elimination rate of blood lactate (BLAer), tennis-specific repeated sprint ability (RSA), and the Yo-Yo Intermittent Recovery Test Level 2 (YoYo-IR2). The results showed that SIT group demonstrated significant improvements in peak and average power during the Wingate test (p = 0.07; p < 0.001), along with a notable increase in YoYo-IR2 performance (7.8% increase, p = 0.04). Significant decreases were observed in both mean (5.1% decrease, p = 0.02) and sum RSA time (5.2% decrease, p = 0.02) in the tennis-specific RSA assessments. Additionally, the SIT group showed significantly higher effective training time and TRIMP in the 90–100% HRmax zone compared to the ET group (p < 0.01). This study underscores the potential benefits of low-volume, court-based SIT in enhancing anaerobic capacity and sport-specific performance in competitive tennis players, in comparison to traditional ET.

Jun 21, 2024 | fitz.hk | Eric Poon

----- 廣告 Advertisment ----- 字 縮小字型大小。 字 重設字型大小。 字 放大字型大小。 挪威中長跑新星 Jakob Ingebrigtsen 近年在中長跑界名聲鵲起。他的訓練特色之一，是經常會透過檢測血液乳酸來調控訓練強度。根據文獻記載，他經常使用的一種特殊訓練方法被稱為「雙乳酸閾值訓練」(Double Lactate Threshold Training)。以下文章將略作介紹。 「乳酸閾值」是指體內開始堆積乳酸的門檻，為體能水平的重要指標 (見圖二)。當運動強度較低時，乳酸產生的速度較慢，身體可以透過新陳代謝將乳酸排除，防止其在體內和血液中累積。然而，隨著運動強度增加，無氧能量系統參與增加，身體進入疲勞狀態，乳酸在體內和血液中的濃度會明顯上升。根據傳統文獻的區分，乳酸濃度會在兩個特定強度位置出現明顯轉折，分別是 2.0 mmol/L 和 4.0 mmol/L。這兩個位置分別被稱為「第一乳酸閾值/有氧門檻」(LT1) 和「第二乳酸閾值/無氧門檻」(LT2)。...