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Exercise Therapy for an Older Patient With Left Ventricular Assist Device
박원하,서용곤,성지동 대한재활의학회 2014 Annals of Rehabilitation Medicine Vol.38 No.3
A left ventricular assist device (LVAD) is a mechanical circulation support implanted for patients with end-stage heart failure. It may be used either as a bridge to cardiac transplantation or as a destination therapy. The health of a 75-year-old man with a medical history of systolic heart failure worsened. Therefore, he was recommended to have implanted a LVAD (Thoratec Corp.) as a destination therapy. After the surgery, he was enrolled in patient cardiac rehabilitation for the improvement of dyspnea and exercise capacity. In results, there is an improvement on his exercise capacity and quality of life. For the first time in Korea, we reported a benefit of exercise therapy after being implanted with a LVAD.
박원하,김창근 대한스포츠의학회 1993 대한스포츠의학회지 Vol.11 No.1
The present study was performed to observe the effect of ammonia, which was increased during exercise, on the muscular fatigue in rat gastrocnermius-soleus muscle. In experimental group Ⅱ with applying ammonia(1800 ㎍/kg) intravenously, contractile tension of gastromius-soleus muscle evoked by electrical stimulation was recorded to observe the complete tetanic response and single twitch response. Electrical stimulation pared with results of experimental group Ⅰ with applying lactate(50 mg/kg) intravenously, with results of control group Ⅰ without anything in first experiment. In second experiments, experimental group Ⅳ was exercised in swimming bath to exhausted state with applying ammonia intravenously, control group Ⅱ was exercised without anything and experimental group Ⅲ with applying lactate. After that, the complete tetanic response and single twitch response were obtained and compared through the same method. The results are summarized as follows. 1. The increased ammonia resulted in increase of threshold for rat muscle contraction. 2. During complete tetanic response, the increased ammonia resulted in decrease of ratio between the time to be a peak tetanic tension and amplitude of peak tetanic tension. 3. During complete tetanic response, rat muscle gradually reduces its tension output, which were interpreted as sign of musclar fatigue. The increased ammonia tension output, but this decreased have no significant meaning statistically. 4. Under the continuous electrical stimulation(2 Hz), the maximal twitch response and complete tetanic response were recorded at every thirty-seconds. Decreasing rate of maximal twitch tension and peak tetanic tension were increased in hyperammonized rat.
박원하,이종서,강경중,서용곤 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.5
Study Design: Cross sectional study. Purpose: To evaluate characteristics of back muscle strength in patients scheduled for lumbar fusion surgery. Overview of Literature: Little is known regarding muscle strength in patients with symptomatic lumbar degenerative diseases who require fusion surgery. Methods: Consecutive 354 patients scheduled for posterior lumbar interbody fusion due to symptomatic degenerative diseases were approached for participation. 316 patients were enrolled. Before surgery, muscle strength was assessed by measuring maximal isometric extension strength at seven angular positions (0°, 12°, 24°, 36°, 48°, 60°, and 72°) and mean isometric strength was calculated. The Oswestry Disability Index (0–100) and visual analogue scale (0–100) for back pain were recorded. Muscle strength was compared according to gender, age (<60, 60–70, and ≥70 years) and scheduled fusion level (short, <3; long, ≥3). Results: Isometric strength was significantly decreased compared with previously reported results of healthy individuals, particularly at extension positions (0°–48°, p <0.05). Mean isometric strength was significantly lower in females (p <0.001) and older patients (p <0.05). Differences of isometric strength between short and long level fusion were not significantly different (p >0.05). Isometric strengths showed significant, but weak, inverse correlations with age and Oswestry Disability Index (r <0.4, p <0.05). Conclusions: In patients with symptomatic lumbar degenerative diseases, back muscle strength significantly decreased, particularly at lumbar extension positions, and in females and older patients.
박원하,Park, Won-Ha 한국건강관리협회 2012 건강소식 Vol.36 No.11
최근 아침형 인간이 유행하면서 아침운동을 즐기는 사람들이 많아졌다. 특히 저녁 약속이 많아서 규칙적인 운동이 힘든 사람은 아침운동이 적합하다. 한편으로는 하루의 과업을 모두 마치고 늦게 시작하는 야간운동을 선호하는 사람들도 늘어났다. 그렇다면 아침운동과 야간운동의 효능은 어떠한 차이점이 있을까?