UNCORRECTED

Sains Malaysiana 39(5)(2010): 863–868

 

Comparison of Physiological Responses to Six Minute Walk Test and Incremental Shuttle Walk Test Among COPD Patients in UKMMC

(Perbandingan Respons Fisiologi Kepada Ujian Jalan Enam Minit dan Ujian Jalan Ulang-Alik Meningkat  di Kalangan Pesakit COPD di PPUKM)

 

R. Ayiesah* & Y. Y. Chang

Physiotherapy Programme, Faculty of allied Health Sciences

University Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz

50300 Kuala Lumpur, Malaysia

 

Diserahkan: 25 Ogos 2009 / Diterima: 22 Februari 2010

 

ABSTRACT

 

The objective of the study was to compare the physiological responses among COPD patient to Six Minute Walk Test (6MWT) and Incremental Shuttle Walk Test (ISWT). Twenty subjects were recruited for both 6MWT and ISWT that was carried out randomly. The readings of oxygen saturation (SpO2 ), heart rate (HR) and Modified Borg’s Score (MBS) were being taken before, during (each minute) and after each test. There were no significant difference observed in the peak HR and MBS between 6MWT and ISWT. There was no significant difference observed in the end SpO2 after both tests. In the two tests, HR and MBS increased linearly and were proportionate with time. However, our results showed that the distance walked in both test were significantly different and strongly related with more distance covered in 6MWT, with p < 0.05 (p = 0.01) and R = 0.58. Both 6MWT and ISWT elicited similar peak HRs and MBS suggesting both tests could be used to challenge patient to certain levels of cardiovascular and respiratory stress. There was no significant difference found in this study between the two tests. The two field tests could produce similar physiological responses in COPD patient.

 

Keywords: COPD; ISWT; 6MWT

 

ABSTRAK

 

Objektif kajian ini ialah untuk membandingkan perubahan fisiologi di kalangan pesakit COPD kepada Ujian Jalan Enam Minit (6MWT) dan Ujian Jalan Ulang-Alik Meningkat (ISWT). Sejumlah 20 subjek telah direkrut untuk 6MWT dan ISWT yang dilakukan secara rawak. Bacaan ketepuan oksigen (SpO2), kadar denyutan jantung (HR) dan O2 Skor Borg’s Termodifikasi (MBS) telah diambil sebelum, semasa (setiap minit) dan selepas ujian. Tiada perbezaan yang tekal diperoleh dalam peak HR dan MBS antara ujian 6MWT dan ISWT yang dilakukan. Tiada perubahan yang signifikan diperolehi dalam SpO2 akhir setelah menjalani kedua-dua ujian. Dalam kedua-dua ujian, HR dan MBS meningkat secara linear dan berkadar langsung dengan masa. Namun kajian menunjukkan jarak berjalan dalam kedua-dua ujian mempunyai perbedzaan yang bererti dan hubungan yang agak kuat berkait dengan pertambahan jarak di dalam 6MWT, dengan p<0.05(p=0.01) dan R=0.58. Ujian 6MWT dan ISWT menghasilkan peak HR dan MBS yang bersamaan menunjukkan ujian-ujian tersebut boleh digunakan untuk menguji tahap keupayaan kardiovaskular dan tekanan respiratori. Kajian ini menunjukkan tiada perbezaan yang bererti di antara kedua-dua ujian. Kedua-dua ujian boleh menghasilkan respons fisiologi yang sama di kalangan pesakit COPD.

 

Kata kunci: COPD; ISWT; 6MWT

 

RUJUKAN

 

ATS 1999. American Thoracic Society Statement: Pulmonary rehabilitation. Am. J. Respir. Crit. Care Med. 159: 1666-1682.

Australian Lung Foundation & Australia Physiotherapy Association. 2007. The pulmonary rehabilitation toolkit: an initiative of the Australian Lung Foundation and Australia Physiotherapy Association. Australian Journal of Physiotherapy. 53: 139.

Casas, A., Vilaro, J., Rabinovich, A., Mayer, A., Barbera, J.A., Rodriguez-Roisin, R. & Roca, J. 2002. Encouraged six minute walking test reflects ‘maximal’ sustainable exercise performance in COPD patients. Am. J. Respir. Crit. Care Med. 165: A503.

Cooper, C.B. 2001. Exercise in chronic pulmonary disease: aerobic exercise prescription. Med. Sci. Sports Exerc. 33: S671-S679.

Curtis J. R., Martin D. P., Martin T. R. 1997. Patient-assessed health outcomes in chronic lung disease: what are they, how do they help us, and where do we go from here? Am J Respir Crit Care Med. 156: 1032-9.

Curtin, J.R. & Patrick, D.L. 2003. The assessment of health status among patients with COPD. Eur Respir J Suppl. 41: 36s-45s.

Jones, P.W. 2001. Health status measurement in chronic obstructive pulmonary disease. Thorax 56: 880-887.

Killian, K.J., Leblanc, P., Martin, D.H., Summers, E., Jones, N.L. & Campbell, E.J. 1992. Exercise capacity and ventilatory, circulatory, and symptom limitation in patients with chronic airflow limitation. Am. Rev. Respir. Dis. 146: 935-940.

Leidy, N.K. 1995. Functional performance in people with chronic obstructive pulmonary disease. Image J. Nurs. Sch. 27: 23-34.

Lewko, A., Marshall, J. & Garrod, R. 2007. Ambulatory oxygen therapy assessment: a comparative study of incremental shuttle and 6-minute walking tests. Physiotherapy 93(4): 261-266.

Palange, P., Forte, S., Onorati, P., Manfredi, F., Serra, P. & Carlone, S. 2000. Ventilatory and metabolic adaptations to walking and cycling in patients with COPD. J. Appl. Physio. 88: 1715-1720.

Pauwels, R.A., Buist, A.S., Calverley, P.M., Jenkins, C.R. & Hurd, S.S. 2001. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease. NHLBI/ WHO global Initiative for chronic obstructive lung disease (GOLD) workshop summary. Am J Respir Crit Care Med.163: 1256-76.

Poulain M, Durand F, Palomba B., Ceugniet, J., Varray, A., & Prefaut, C. 2003. 6-minute walk testing is more sensitive than maximal incremental cycle testing for detecting oxygen desaturation in patients with COPD. Chest 123: 1401-1407.

Servino, S., Marcello, M. & Antonelli, S. 2000. Shuttle walking test induces a similar cardiorespiratory performance than 6 minute walking test in COPD patients. Eur. Respir. J. 16: 29s.

Steele, B. 1996. Timed walking tests of exercise capacity in chronic illness. J. Cardiopulm. Rehabil 16: 25-33.

Singh, S., Morgan, D., Scott, S., Walters, D. & Hardman, A. 1992. Development of a shuttle waking test of disability in patients with chronic airways obstruction. Thorax 47: 1019-1024.

Swinburn, C.R., Wakefield, J.M. & Jones, P.W. 1985. Performance, ventilation, and oxygen consumption in three different types of exercise tests in patients with chronic obstructive lung disease. Thorax 40: 581-586.

Turner, S.E., Eastwood, P.R., Cecins, N.M., Hillman, D.R. & Jenkins, S.C. 2004. Physiologic responses to incremental and self-paced exercise in COPD: a comparison of three tests. CHEST 126: 766-773.

Vagaggini, B., Taccola, M., Severino, S., Marcello, M., Antonelli, S., Brogi, S., Simone, C.D., Giardina, A. & Paggiaro, P.L. 2003. Shuttle Walking Test and 6-Minute Walking Test induce a similar cardiorespiratory performance in patients recovering from an acute exacerbation of chronic obstructive pulmonary disease. Respiration 70: 579-584.

 

*Pengarang untuk surat-menyurat; email: kamalia086@gmail.com