Does daily physical activity reflect claudication distance measured on a treadmill and in a community outdoor setting?

INTRODUCTION AND OBJECTIVE: Low physical activity in patients with claudication is associated with lower walking abilities as assessed by the treadmill test. The impact of physical activity on the ability to walk in a natural environment is unknown. The study aimed to assess the level of daily physical activity among patients with claudication, as well as the relationship between the level of daily physical activity and claudication distance measured during the outdoor walking and treadmill tests. MATERIAL AND METHODS: The study included 37 patients (24 males), aged 70.03±5.9, with intermittent claudication. Daily step count was assessed using the Garmin Vivofit activity monitor, worn on the non-dominant wrist for 7 consecutive days. Pain-free walking distance (PFWDTT) and maximal walking distance (MWDTT) were measured via the treadmill test. During 60-minute outdoor walking, the maximal walking distance (MWDGPS), total walking distance (TWDGPS), walking speed (WSGPS), number of stops (NSGPS) and stop durations (SDGPS) were assessed. RESULTS: Mean daily step count - 7,102±3,433. A significant correlation was observed between daily step count and MWDTT, TWDGPS (R=0.33, R=0.37, respectively (p<0.05). Furthermore, 51% of patients reached less than 7,500 steps/day and presented significantly shorter MWDTT, MWDGPS and TWDGPS, compared to the participants covering ≥7,500 steps (p<0.05). CONCLUSIONS: The daily step count reflects claudication distance measured on a treadmill and only partially in a community outdoor setting. The minimal daily step count that should be recommended for patients with claudication, allowing achievement of significantly better results with regard to walking abilities, both on the treadmill and in outdoor settings, is at least 7,500 steps per day.

The Influence of Treadmill Training on the Bioelectrical Activity of the Lower Limb Muscles in Patients with Intermittent Claudication.

AIM: Intermittent claudication is the most common symptomatic manifestation of peripheral arterial disease (PAD), presenting as ischemic leg muscle pain and gait dysfunction. The aim of this study was to evaluate the changes in bioelectrical activity of the lower limb muscles activity in claudicating patients over a 12-week period of supervised treadmill training and to verify the hypothesis as to which muscles of lower limbs are activated by training treatment-the proximal, as compensatory mechanism, or the distal, which are the most ischemic. METHODS: The study comprised 45 patients aged 60-70 years (height 168.8 ± 6.8 cm, weight 78.9 ± 9.2 kg) with PAD and unilateral intermittent claudication (Fontaine stage IIa/IIb), who participated in a 12-week supervised treadmill training program. Surface electromyography (sEMG) of the gastrocnemius lateralis (GaL), gastrocnemius medialis (GaM), tibialis anterior (TA), biceps femoris (BF), rectus femoris (RF) and gluteus medius (GM) muscles in the claudicated leg were continuously measured during the treadmill test. The average mean amplitude and mean amplitude range of the sEMG signal were analyzed. RESULTS: During the treadmill test, after 12 weeks of training, the average mean amplitude of the GM (105 ± 43 vs. 74 ± 38%, p = 0.000008, ES = 0.76), BF (41 ± 22 vs. 33 ± 12%, p = 0.006, ES = 0.45) and GaM (134 ± 50 vs. 114 ± 30%, p = 0.007, ES = 0.48) muscles was significantly lower compared with baseline. The mean amplitude range was significantly decreased after 12 weeks of training in the GM (229 ± 64 vs. 181 ± 62%, p = 0.008, ES = 0.77) and BF (110 ± 69 vs. 84 ± 31%, p = 0.0002, ES = 0.48) muscles. After 12 weeks of training, the mean amplitude range of the TA muscle was significantly higher compared with baseline (104 ± 46 vs. 131 ± 53%, p = 0.001, ES = 0.54), but without significant changes in the average mean amplitude value. The most favorable changes, suggesting the lowest muscle fatigue and the highest walking capacity, were found in patients with the longest walking time. CONCLUSIONS: The obtained results may suggest that after 12 weeks of treadmill training, beneficial changes occurred in both the proximal and distal muscles. Therefore, greater foot plantar flexion and stronger push-off as well as greater hip extension may be considered the main mechanisms of observed gait pattern improvement. It may also be suggested that the therapy of gait alterations in patients with PAD should be focused not only on calf muscle pump improvement, but also on proximal hip extensor strengthening.

Outdoor Walking Test With a Global Positioning System Device as an Additional Tool for Functional Assessment of Older Women.

The primary aim was to assess the test-retest reliability of an outdoor walking test with a global positioning system device in older women in a community setting. In addition, correlations between the suggested test and various tests recommended to evaluate muscle strength, walking speed, and self-perceived health status in older adults were studied. The study included 40 women aged 68 (SD = 5) years. The primary outcomes were total walked distance and mean walking speed. The secondary outcomes were lower-body strength, heart rate, speed in a 4-m walk test, and self-perceived health status. The intraclass correlation coefficients calculated for the total walked distance, mean walking speed, and mean heart rate were .94, .92, and .37, respectively. Thus, the suggested outdoor walking test with the application of a global positioning system device may be considered a reliable test tool, which can be recommended for the evaluation of walking ability among older women in a community setting.

Myofascial release in patients during the early postoperative period after revascularisation of coronary arteries.

Purpose: The evaluation of the impact of soft tissue manual therapy with a myofascial release on pulmonary function, postoperative pain, fatigue, breathing difficulties and physical fitness, in patients during the early postoperative period after coronary artery bypass grafting and off-pump coronary artery bypass grafting surgery.Materials and methods: The study included 80 subjects (59 males) with an average age of 64.13 years old. They were randomised into two groups: group I (n = 40) received a conventional form of rehabilitation and group II (n = 40) additionally, from day 3 to day 6 post-surgery, was provided the Carol Manheim form of myofascial release. Subjects were evaluated three times: before the surgery, on day 4 and 6 post-surgery. Using the visual analogue scale, the following symptoms were measured: pain intensity, breathing difficulties and level of physical endurance. Fatigue after performing physical exercises was measured using the Borg scale. Spirometry was used to measure the one-second forced expiratory volume and forced vital capacity.Results: Positive changes were observed in both groups with regard to all analysed variables. However, group II compared to group I showed a significantly greater improvement (p < 0.05; the Mann-Whitney U test) in relation to: pain intensity on day 4 (mean 5.46 vs 6.58) and on day 6 (mean 3.05 vs 5.35) after the surgery; lower breathing difficulties on day 6 post-surgery (mean 4.08 vs 5.63); limiting physical fitness on day 6 post-surgery (mean 6.35 vs 5.13). Between the condition prior to the surgery and day 6 post-surgery in group II compared to group I, there was a significantly smaller (p < 0.05; Student's t-test) decrease in one-second forced expiratory volume (mean -0.65 vs -0.9 L/s) and the volume of forced vital capacity (mean -0.63 vs -1.33 L). Between day 4 and 6 post-surgery in group II compared to group I, there was a significantly higher (p < 0.05; Student's t-test) increase in the one-second forced expiratory volume (mean 0.21 vs 0.11 L/s) and forced vital capacity (mean 0.32 vs 0.12 L).Conclusions: Implementing myofascial release techniques in the conventional form of cardiosurgical rehabilitation might enhance the improvement in pulmonary function, lessen breathing difficulties, pain intensity and fatigue, it might augment the increase in physical endurance among patients during the early postoperative period after coronary artery bypass grafting and off-pump coronary artery bypass grafting surgery.Implications for rehabilitationThe implementation of myofascial release techniques in conventional cardiac rehabilitation may improve the pulmonary function in patients during the early postoperative period, after revascularisation of coronary arteries.The adoption of myofascial release techniques in conventional cardiac rehabilitation may decrease breathing difficulties, pain intensity, fatigue and increase the physical fitness in patients during the early postoperative period, after the revascularisation of the coronary arteries.The implementation of myofascial release techniques in conventional cardiac rehabilitation may enhance patients' improvement during the early postoperative period, after the revascularisation of the coronary arteries.

Intermittent Claudication in Physiotherapists' Practice.

Intermittent claudication is a symptom of atherosclerosis of the lower limbs (peripheral arterial disease (PAD)) and is characterized by pain and cramps of lower limb muscles during exercise. Claudication leads to a reduction in physical activity of patients. PAD is a systemic disease. Atherosclerotic lesions located in the arteries of the lower limbs not only pose the risk of the ischemic limb loss, but above all, they are an important prognostic factor. Patients with claudication are at significant risk of cardiovascular complications such as infarcts or strokes. Comprehensive rehabilitation of patients with intermittent claudication based on the current TASC II (Inter-Society Consensus for the Management of Peripheral Arterial Disease) guidelines, ESC (European Society of Cardiology) guidelines, and AHA (American Heart Association) guidelines includes supervised treadmill training, training on a bicycle ergometer, Nordic Walking, resistance exercises of lower limb muscles, and exercises of upper limbs. A trained, educated, and motivated patient has a chance to improve life quality as well as life expectancy.