• PNF and Movement
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• 제20권1호
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• pp.91-101
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• 2022

Purpose: The purpose of this study was to examine the effect of cycle ergometer exercise inducing movement of the affected side on knee joint function after total knee arthroplasty (TKA). Methods: The primary experiment was conducted on 19 members of the cycle ergometer exercise group to measure the muscle activity of the rectus femoris, hamstring, tibialis anterior, and gastrocnemius muscles during cycle ergometer exercise that induced the affected side's movement. In the second experiment, after receiving physiotherapeutic intervention for 30 min, the general bicycle exercise group and cycle ergometer exercise group performed the corresponding exercise for 15 min, 5 times per week, for 2 weeks. The ROM, muscle strength, pain, and balance were then measured and compared between the two groups. Results: In the results of the primary experiment, cycle ergometer exercise inducing movement of the affected side showed a significantly larger increase in the activity of leg muscles (rectusfemoris, hamstring, tibialis anterior, gastrocnemius) on the affected side than the general bicycle exercise (p <0.05). In the second experiment, the cycle ergometer exercise group showed a significantly larger increase in range of movement of affected side knee flexion and muscle strength of affected side knee flexion, knee extension, and plantarflexion than the general bicycle exercise (p <0.05). No significant between-group difference was observed in pain and balance before or after the intervention (p >0.05). Conclusion: Cycle ergometer exercise inducing movement of the affected side increases use of the muscles around the affected side knee joint after TKA more than general bicycle exercise and produces better effects for enhancing muscle strength. The application of cycle ergometer exercise inducing movement of the affected side is expected to reduce the patients' unbalanced use during the early postoperative period and help them to quickly return to normal daily life through rapid muscle strength recovery.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2007년도 제48회 학술심포지움 및 추계국제학술대회
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• pp.82.2-82.2
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• 2007

See Full Text

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.1429-1430
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• 2011

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.1403-1404
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• 2011

• 한국산업보건학회지
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• 제16권2호
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• pp.145-151
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• 2006

Because of the limitations of maximal load tests for $VO_2max$, submaximal tests using cycle ergometer are used for field study in general. This study was conducted to evaluate validity of various submaximal tests using cycle ergometer. This study had been conducted during May to June 2005, which subjects were 15 males and 15 females in twenties. Experiment was performed with restrictive conditions which regulated ambient temperature, noise, and entrance restriction. Submaximal load test protocols including YMCA Protocol (YP), ${\AA}strand$-Rhyming Protocol (ARP), Relative heart ratio Protocol (RP), and Ramp test Protocol (RP) were compared with maximal load test which used gas mask analyser using Bruce Protocol. All submaximal load tests were highly related with maximal load test (Spearman's correlation coefficient > 0.60) with statistical significancy. The highest correlation coefficient with maximal test was found in RP. Three submaximal test results except RP were significantly different with maximal test results (Wilcoxon rank test). All submaximal tests had high validity. The reason why RP had highest validity might be that it represents Korean physical strength and individual differences better than the others. RP using cycle ergometer would make easy to study for physical capacity evaluation and field workload estimation.

• Tuberculosis and Respiratory Diseases
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• 제47권1호
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• pp.26-34
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• 1999

연구배경: 최대 산소 섭취량 ($VO_2$ max) 은 답차 운동시 자전거시 보다 높게 측정이 되는데, Hassen과 Wasserman 등에 의하면 답차 시 약 1.11배 정도 높게 측정된다고 하였다. $VO_2$ max는 나이, 성별, 키, 체중 등 뿐만 아니라 인종, 사회문화적 배경 및 운동 습관에 따라서도 영향을 받을 수 있음이 알려져 있다. 본 연구에서는 한국 대학생 연령의 성인을 대상으로 답차와 자전거 운동시 $VO_2$ max와 무산소 역치에서의 산소 섭취량 (AT)을 측정, 비교하였다. 방법: 1998 년 6월부터 9월까지 연세대학교 의과대학에 재학중인 남학생 44명을 대상 으로 하였다. 이들을 무작위로 2군으로 나누어 24명은 답차를 우선 시행 후 1주일 후 자전거로 운동을 시행하였고 20명은 자전거를 우선 시행 후 답차를 시행하였다. 증상 제한적 최대 운동 시행토록 하였으며, 최소한 호흡 교환비(RER) 가 1.1을 초과한 경우, 최대 산소 섭취량이 30초 이상 평점을 이룬 경우, 최대 운동시 심박 예비율이 15% 미만이거나 또는 호흡 예비율이 30% 미만일 경우를 최대 운동으로 정의하였고 이들 중 한가지라도 충족시키지 못한 경우에는 최대운동을 하지 않은 것으로 (submaximal exercise) 간주하여 연구에서 제외하였다. AT는 V-slope method로 구하였다. 결과: 답차 운동시의 $VO_2$ max와 AT 의 값은 각각 $45.1{\pm}6.66 m\ell$/kg/min, $26.0{\pm}6.78 m\ell$/kg/min 이었으며, 자전거 운동시에는 각각 $34.9{\pm}5.89 m\ell$/kg/min, $19.5{\pm}4.77 m\ell$/kg/min 이었다. 측정-$VO_2$ max/예측 $VO_2$ max 의 값은 답차 운동시 $98.8{\pm}13.24 %$ 이었으며, 자전거 운동시 $84.4{\pm}13.42 %$ 이었다. 자전거의 결과로 답차 운동시 $VO_2$ max 의 예측치를 구할 때 쓰이는 Hassen등의 공식을 이용하여 이를 실제 답차 운동시 얻어진 $VO_2$ max값과 비교해 보았을 때 두 값 사이의 차이는 통계적으로 유의하였다 (p<0.01). 최대 운동시 심박 예비율, 산소/맥, 호흡 예비율, $V_E$/MVV, $V_E/VCO_2$는 (답차 운동과 자전거 운동사이에 차이가 있었다 ). 그러나 $V_E/VO_2$, Vd/Vt, Ti/Ttot는 차이가 없었다. AT에서는 산소/맥, 호흡 예비율, $V_E$/MVV, Ti/Ttot값은 차이가 있었으나 나머지 값들은 그렇지 못하였다. 결론: 본 연구에서 보았듯이 답차와 자전거 사이의 차이가 크므로 결과의 해석에 이용시 유의해야 할 것이며, 향후 한국인에서 적용할 수 있는 참고치를 구하려는 노력이 필요할 것으로 여겨진다.

• PNF and Movement
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• 제20권2호
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• pp.179-187
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• 2022

Purpose: The purpose of this study was to determine the asymmetrical difference between the use of leg muscles on the surgical and non-surgical sides during initial lower extremity ergometer exercise after unilateral knee arthroplasty. Methods: Twelve elderly patients diagnosed with degenerative arthritis of the knee and who underwent unilateral arthroplasty were included in this study. The leg length of each subject was taken into account when setting the application distance of the lower extremity ergometer. The same pedal resistance, strength, and speed were used for all the subjects. The total angle of use of the ergometer (360°) was analyzed by dividing it into an extension section and a flexion section. Using a surface electromyography system, the activities of the muscles of the surgical and non-surgical sides were converted into maximal voluntary isometric contraction (MVIC) and analyzed using the paired t-test. Results: When the activities of the muscles on the surgical and non-surgical sides were compared, it was found that the rectus femoris and biceps femoris had significant differences in the flexion and extension sections (p < .05), and that the tibialis anterior significantly differed in the flexion section (p < .05). There was no significant difference in the extension section of the tibialis anterior muscle, or in the flexion and extension sections of the gastrocnemius (p >.05). Conclusion: The results of this study confirm that the rectus femoris, tibialis anterior, biceps femoris, and gastrocnemius on the surgical side act in an opposite manner to those on the non-surgical side during pedaling in the same section.

• Physical Therapy Rehabilitation Science
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• 제8권3호
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• pp.134-140
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• 2019

Objective: The purpose of this study was to investigate the effect of exercise therapy and bedside ergometer exercise on muscle strength, function level, and quality of life of persons in intensive care. Design: Randomized Controlled Trial Methods: Sixteen patients in the ICU were randomly assigned to either the exercise group (n=8) or the bedside cycle ergometer group (n=8). Activities in the ICU exercise group (rolling, sitting at the edge of the bed, transfer from sitting to standing, standing balance training, ambulation) and bedside cycle ergometer group were performed 5 times a week for 30 minutes during the ICU admission period. Medical Research Council (MRC) and Functional Status Scale-Intensive Care Unit (FSS-ICU) parameters were assessed at the time of admission to the ICU, and reevaluation was assessed on the day of ICU discharge. The Short Form-36 (SF-36) was assessed at the time of discharge from the ICU. Results: MRC and FSS-ICU were significantly increased before and after intervention in both the experimental and control groups (p<0.05). There was a significant difference between MRC and FSS-ICU in the comparison of the changes before and after the intervention (p<0.05). SF-36 was compared between groups after intervention and there was a significant difference between the experimental and the control group (p<0.05). Conclusions: Muscle strength and functional levels improved after intervention in both the experimental and control groups. The ICU exercise group was more effective than the bedside cycle ergometer group to improve muscle strength, functional level, and quality of life performance of persons in the ICU.

• 운동영양학회지
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• 제23권2호
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• pp.45-50
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• 2019

[Purpose] The purpose of this study was to confirm that the difference in excess post-exercise oxygen consumption (EPOC) during exercise of the spending the same calories between the continuous and interval exercise. [Methods] Thirty-four healthy college students who did not regularly exercise volunteered to participate in our study. Continuous exercise was performed on an ergometer for 30 min at 60% of maximal oxygen consumption (VO_{2 max}). Interval exercise was performed on a cycle ergometer at 80% VO_{2 max} for 2 min initially, followed by 40% VO_{2 max} for 1 min, and 80% VO_{2 max} for 3 min. This was repeated six times for a total of 26 min. [Results] The major findings were as follows: (1) energy consumption during exercise was not significantly different between continuous exercise and interval exercise groups; (2) EPOC was higher in interval exercise than in continuous exercise for all dependent variables (i.e., total oxygen consumption, total calories, summation of heart rate); and (3) there were no significant differences in the lipid profile between continuous and interval groups. [Conclusions] Our study confirmed that after equalizing energy expenditure for continuous and interval exercise on a cycle ergometer in subjects in their twenties, interval exercise results in higher EPOC than continuous exercise. These data suggest that interval exercise may be more effective than continuous exercise in reducing body fat, for a given amount of energy expenditure.

• 대한인간공학회지
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• 제20권3호
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• pp.37-46
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• 2001

The objective of this study was to investigate the physical work capacity and rest allowance for Korean males and females. Eleven males and 13 females participated in the study as subjects. An ergometer exercise test and a treadmill exercise test were conducted to measure oxygen consumption rates. The PWC values of Korean males and females were 2605.62ml/min and 1853.01ml/min in the cycle ergometer test, respectively, and 2872.10ml/min and 2057.91ml/min in the treadmill test. The PWC values of Korean females were about 70% of Korean males. The PWC values of Korean females were74.36%-78.79% of western males in the treadmill test. and 88.66%-89.32% of western males in the ergometer test. The PWC values of Korean females were 81.34%-82.98% of western females in the treadmill test, and 87.11% of western femaleles in the ergometer test. And, the results of this study showed that the rest allowance should be determined separately for male and female because of the difference in physical work capacity.