사용자 민감성 자동변속 트레드밀에서의 에너지소비량
Energy Expenditure on a User Sensitive Spontaneous Speed Control Treadmill
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
연구배경: 일반 트레드밀은 사용자가 수동적으로 운동중 속도를 조절한다. 자동변속 트레드밀(fast interactive automaticspeed control treadmill, FAST)은 벨트 위에서 사용자의 위치 변화에 높은 민감성을 나타내고 사용자의 움직임에 따라 속도가 조절되는 트레드밀이다. 본 연구는 일반 트레드밀과 FAST에서 운동 중 에너지 소비량의 차이를평가하는 것이다. 방법: 43명의 대상자가 실험에 참여하였고 운동강도에따라 3그룹(저강도[40-50% of VO2max], 중강도[55-65%of VO2max], 고강도[70-80% of VO2max])으로 분류하였다. Test-1에서 대상자들은 지정된 운동강도 범위 안에서속도가 변화되는 FAST에서 운동을 했다. Test-1에서 평균속도가 계산되어 Test-2에 동일하게 적용되었다. Test-2에서는 Test-1의 운동거리와 고정된 속도에서 걷기 또는 달리기 운동을 했다. 운동 중 산소섭취량, 심박수, 호흡교환율,산소맥, 에너지소비량이 측정되었다. 결과: Test-1에서 저강도 운동그룹(22.95±2.55 vs. 21.72±2.90 mL/kg/min)과 중강도 운동그룹(31.17±3.75 vs. 29.73±4.86 mL/kg/min)의 평균 VO2는 Test-2와 비교하여 더높았다(P<.05). Test-1에서 저강도 운동그룹(7.09±1.67 vs. 6.71±1.73 kcal/min)과 중강도 운동그룹(9.79±2.62 vs. 9.32±2.71 kcal/min)의 에너지소비량은 Test-2와 비교하여더 높았다(P<.05). 저강도와 중강도 운동그룹의 심박수, 호흡교환율과 산소맥은 유사하였다. 고강도 운동그룹은Test-1과 Test-2 사이에서 측정변인들 간의 유의한 차이는나타나지 않았다. 결론: 본 연구의 결과 저·중강도에서 속도가 변화되는 트레드밀에서의 운동은 속도가 고정된 트레드밀에서의 운동보다 에너지소비량이 더 높았다. 따라서 자동으로 속도 조절 기능을 갖춘 트레드밀에서의 운동은 에너지소비량을 증가시키는데 효과가 있을 것이다.
Abstract
Background: A conventional treadmill provides manually controlled constant speed during exercise. A fast interactiveautomatic speed control treadmill (FAST), which is highly sensitive to the position of the user on thebelt and spontaneously adjusts its speed accordingly, was evaluated in terms of energy expenditure (EE) duringexercise. Methods: A total of 43 subjects were recruited and assigned to one of three exercise intensity groups- low (LIG;40-50% of VO2max), moderate (MIG; 55-65% of VO2max), and high (HIG; 70-80% of VO2max). During the firsttest (Test-1), each subject performed an exercise bout on the FAST while spontaneously changing their locomotionspeed within their assigned range of intensity. The average speed in Test-1 was calculated and appliedto the second test (Test-2), in which the subjects exercised at a constant belt speed and matched the total traveldistance of Test-1. During the tests, the oxygen uptake (VO2), heart rate (HR), respiratory quotient (RQ), oxygenpulse (OP), and EE of each subject were measured. Results: The average VO2 in Test-1 was higher than that in Test-2 for both the LIG (22.95±2.55 vs. 21.72±2.90ml/kg/min) and MIG (31.17±3.75 vs. 29.73±4.86 mL/kg/min) (P<.05) subjects. The EE in Test-1 was higherthan that in Test-2 for both the LIG (7.09±1.67 vs. 6.71±1.73 kcal/min) and MIG (9.79±2.62 vs. 9.32±2.71kcal/min) (P<.05) subjects. The HR, RQ, and OP in the LIG and the MIG were similar. There was no differencebetween Test-1 and Test-2 in any of the metabolic parameters for the HIG subjects. Conclusions: The results indicated that, low- to moderate-intensity treadmill exercise at varying speeds requiredhigher energy expenditure than that at a constant speed. Thus, a treadmill with a spontaneous speedvariation function may be an effective exercise modality that increases energy expenditure.
참고문헌 (29)
- Buchner HH, "Kinematics of treadmill versus overground locomotion in horses", Vet Q, 16(Suppl 2), pp.S87~S90 (1994)
- Frishberg BA, "An analysis of overground and treadmill sprinting", Med Sci Sports Exerc, 15(6), pp.478~485 (1983)
- Pierrynowski MR, "Transfers of mechanical energy within the total body and mechanical efficiency during treadmill walking", Ergonomics, 23(2), pp.147~156 (1980)
- Savelberg HH, "Intra-stride belt-speed variation affects treadmill locomotion", Gait Posture, 7(1), pp.26~34 (1998)
- Alton F, "A kinematic comparison of overground and treadmill walking", Clin Biomech(Bristol Avon), 13(6), pp.434~440 (1998)
- Stolze H, "Gait analysis during treadmill and overground locomotion in children and adults", Electroencephalogr Clin Neurophysiol, 105(6), pp.490~497 (1997)
- Warabi T, "Treadmill walking and overground walking of human subjects compared by recording sold-floor reaction force", Neurosci Res, 53(3), pp.343~348 (2005)
- Elliott BC, "A cinematographic analysis of overground and treadmill running by males and females", Med Sci Sports, 8(2), pp.84~87 (1976)
- Riley PO, "A kinematics and kinetic comparison of overground and treadmill running", Med Sci Sports Exerc, 40(6), pp.1093~1100 (2008)
- Greig C, "Treadmill walking in old age may not reproduce the real life situation", J Am Geriatr Soc, 41(1), pp.15~18 (1993)
- Murray MP, "Treadmill vs. floor walking: kinematics, electromyogram, and heart rate", J Appl Physiol, 59(1), pp.87~91 (1985)
- Parvataneni K, "Kinematic, kinetic and metabolic parameters of treadmill versus overground walking in healthy older adults", Clin Biomech (Bristol, Avon), 24(1), pp.95~100 (2009)
- Riley PO, "A kinematic and kinetic comparison of overground and treadmill walking in healthy subjects", Gait Posture, 26(1), pp.17~24 (2007)
- Stoquart G, "Effect of speed on kinematic, kinetic, electromyographic and energetic reference values during treadmill walking", Neurophysiol Clin, 38(2), pp.105~116 (2008)
- Lee SJ, "Biomechanics of overground versus treadmill walking in healthy individuals", J Appl Physiol, 104(3), pp.747~755 (2008)
- Arsenault AB, "Treadmill versus walkway locomotion in humans : an EMG study", Ergonomics, 29(5), pp.665~676 (1986)
- Minnetti AE, "Energetics and mechanics of human walking at oscillating speeds", Am Zool, 41(2), pp.205~210 (2001)
- van Ingen Schenau GJ, "Some fundamental aspects of the biomechanics of overground versus treadmill locomotion", Med Sci Sports Exerc, 12(4), pp.257~261 (1980)
- Pearce ME, "Energy cost of treadmill and floor walking at self-selected paces", Eur J Appl Physiol Occup Physiol, 52(1), pp.115~119 (1983)
- Minnetti AE, "A feedback-controlled treadmill(treadmill-on-demand)and the spontaneous speed of walking and running in humans", J Appl Physiol, 95(2), pp.838~843 (2003)
- Segers V, "Influence of M. tibialis anterior fatigue on the walk-to-run and run-to-walk transition in non-steady state locomotion", Gait Posture, 25(4), pp.639~647 (2007)
- Kram R, "Energetics of running : a new perspective", Nature, 346(6281), pp.265~267 (1990)
- Taylor CR, "Force development during sustained locomotion: a determinant of gait, speed and metabolic power", J Exp Biol, 115, pp.253~262 (1985)
- Biewener AA, "Muscle mechanical advantage of human walking and running : implications for energy cost", J Appl Physiol, 97(6), pp.2266~2274 (2004)
- Saibene F, "Biomechanical and physiological aspects of legged locomotion in humans", Eur J Appl Physiol, 88(4-5), pp.297~316 (2003)
- Nilsson J, "Changes in leg movements and muscle activity with speed of locomotion and mode of progression in humans", Acta Physiol Scand, 123(4), pp.457~475 (1985)
- Andersson EA, "Intramuscular EMG from the hip flexor muscles during human locomotion", Acta Physiol Scand, 161(3), pp.361~370 (1997)
- Waters RL, "Energy-speed relationship of walking : standard tables", J Orthop Res, 6(2), pp.215~222 (1988)
- Waters RL, "The energy expenditure of normal and pathologic gait", Gait Posture, 9(3), pp.207~231 (1999)