Strength training increases walking tolerance in intermittent claudication patients: Randomized trial

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• 作者：Raphael Mendes Ritti-Dias ; Nelson Wolosker ; Clá ; udia Lú ; cia de Moraes Forjaz ; Celso Ricardo Fern ; es Carvalho ; Gabriel Grizzo Cucato ; Pedro Puech Leã ; o ; Maria de Fá ; tima Nunes Marucci
• 刊名：Journal of Vascular Surgery
• 出版年：2010
• 出版时间：January 2010
• 年：2010
• 卷：51
• 期：1
• 页码：89-95
• 全文大小：260 K

文摘

Objective

To analyze the effects of strength training (ST) in walking capacity in patients with intermittent claudication (IC) compared with walking training (WT) effects.

Methods

Thirty patients with IC were randomized into ST and WT. Both groups trained twice a week for 12 weeks at the same rate of perceived exertion. ST consisted of three sets of 10 repetitions of whole body exercises. WT consisted of 15 bouts of 2-minute walking. Before and after the training program walking capacity, peak VO₂, VO₂ at the first stage of treadmill test, ankle brachial index, ischemic window, and knee extension strength were measured.

Results

ST improved initial claudication distance (358 ± 224 vs 504 ± 276 meters; P < .01), total walking distance (618 ± 282 to 775 ± 334 meters; P < .01), VO₂ at the first stage of treadmill test (9.7 ± 2.6 vs 8.1 ± 1.7 mL · kg⁻¹ · minute; P < .01), ischemic window (0.81 ± 1.16 vs 0.43 ± 0.47 mm Hg minute meters⁻¹; P = .04), and knee extension strength (19 ± 9 vs 21 ± 8 kg and 21 ± 9 vs 23 ± 9; P < .01). Strength increases correlated with the increase in initial claudication distance (r = 0.64; P = .01) and with the decrease in VO₂ measured at the first stage of the treadmill test (r = −0.52; P = .04 and r = −0.55; P = .03). Adaptations following ST were similar to the ones observed after WT; however, patients reported lower pain during ST than WT (P < .01).

Conclusion

ST improves functional limitation similarly to WT but it produces lower pain, suggesting that this type of exercise could be useful and should be considered in patients with IC.