Endurance and Walking Training by Nordic Walking in Multiple Sclerosis

Effect of Nordic Walking Training Compared With Conventional Endurance Training in Walking Capacity in People With Multiple Sclerosis: a Simple Blinded Randomized Controlled Trial

Walking capacity is one of the most valuable body functions among persons with multiple sclerosis (MS) and it is one of the most frequently affected, even in early stages of the disease. Inactivity and deconditioning can accelerate gait impairment and promote other pathologies related with sedentary lifestyle. Nordic walking (NW) is a fun and effective fitness and rehabilitation activity. The benefits of NW have been extensively described in healthy and elderly population (Tschentscher, 2013; Kappor, 2013) and it is proving to be highly recommended to different neurological conditions, specially to Parkinson Disease (Reuter 2006; van Eijkeren 2008; Fritz 2011; Ebersbach 2014). There is no evidence on NW and MS, although it's supposed to be an ideal physical activity for many reasons: it tones the upper and lower body at the same time, uses 90% of the skeletal muscles, burns up to 46% more calories than ordinary walking, reduces the pressure on knees and joints, poles propel the walker along easier and faster and it is one of the most effective cross training techniques for people who require improve cardiovascular and endurance conditioning.

A simple blinded randomized controlled trial as designed to assess if an endurance training (20 sessions of 45 minutes x 2 times/week x 10 weeks) using NW improves: walking capacity, balance, fatigue, mood and health-related quality of life of people with MS. 66 people with MS will be randomly allocated in NW group or conventional endurance training group (treadmill and cycloergometer). Assessments will take place before starting the training, after the training and 3 months after.

The excursions will take place predominantly in flat pathways, beginning in a local park and progressing to roadside footpaths. Each session will last an hour including a warm up, NW and a cool down with stretching exercises.

15 minutes of Treadmill training with progressive increase of velocity followed by 20 minutes of cycloergometer with progressive increase of resistance. Each session will last an hour including a warm up, training with treadmill and cycloergometer and a cool down with stretching exercises.

The patient is directed to one end of a clearly marked 25-foot course and is instructed to walk 25 feet as quickly as possible, but safely. The time is calculated from the initiation of the instruction to start and ends when the patient has reached the 25-foot mark. The task is immediately administered again by having the patient walk back the same distance. Patients may use assistive devices when doing this task.

The patient is directed to one end of a clearly marked 25-foot course and is instructed to walk 25 feet as quickly as possible, but safely. The time is calculated from the initiation of the instruction to start and ends when the patient has reached the 25-foot mark. The task is immediately administered again by having the patient walk back the same distance. Patients may use assistive devices when doing this task.

12-item self reported measure of the impact of MS on individual's walking ability. Each item scoring provides options 1-5, with 1 meaning no limitation and 5 meaning extreme limitation on the gait related item. The total score ranges between 12 and 60, with higher scores indicating more limitation perceived on walking ability.

12-item self reported measure of the impact of MS on individual's walking ability. Each item scoring provides options 1-5, with 1 meaning no limitation and 5 meaning extreme limitation on the gait related item. The total score ranges between 12 and 60, with higher scores indicating more limitation perceived on walking ability.

Time in seconds required to walk to a line that is 3 meters (9.8 feet) away, turn around at the line, walk back to the chair, and sit down.

Time in seconds required to walk to a line that is 3 meters (9.8 feet) away, turn around at the line, walk back to the chair, and sit down.

The Berg Balance Scale (BBS)14-item objective measure that assesses static balance and fall risk in adults. Items include static and dynamic activities with varying difficulty. Each item scoring provides options 0-4, determined by the ability to perform the assessed ability. Item score are then summed ranging between 12 and 60, with higher scores indicating better balance ability

The Berg Balance Scale (BBS)14-item objective measure that assesses static balance and fall risk in adults. Items include static and dynamic activities with varying difficulty. Each item scoring provides options 0-4, determined by the ability to perform the assessed ability. Item score are then summed ranging between 12 and 60, with higher scores indicating better balance ability

The Activities Specific Balance Confidence Scale(ABC scale) is a reported measure of balance confidence in performing various activities without losing balance or experiencing a sense of unsteadiness. The scale has 16 items (score 0-1600 possible). The score is recorded as a percentage (%), with 100% the highest level of confidence. Max score of 1600 divided by 16 items = 100%

The Activities Specific Balance Confidence Scale(ABC scale) is a reported measure of balance confidence in performing various activities without losing balance or experiencing a sense of unsteadiness. The scale has 16 items (score 0-1600 possible). The score is recorded as a percentage (%), with 100% the highest level of confidence. Max score of 1600 divided by 16 items = 100%

The Modified Fatigue Impact Scale (MFIS) is a form of the Fatigue Impact Scale (Fisk et al, 1994) based on items derived from interviews with MS patients concerning how fatigue interferes in their lifes. The instrument provides an assessment of the effect of fatigue in terms of physical, mental and psychosocial functioning. Items on the MFIS can be aggregated into three subscales (physical, cognitive, and psychosocial), as well as into a total MFIS score. All items are scaled so that higher scores indicate a greater impact of fatigue on a person's activities. The Physical Subscale range from 0 to 36. The Cognitive Subscale ranges from 0 to 40. The Psychosocial Subscale ranges from 0 to 8.The total MFIS score can range from 0 to 84. It is computed by adding scores on the physical, cognitive, and psychosocial subscales.

The Modified Fatigue Impact Scale (MFIS) is a form of the Fatigue Impact Scale (Fisk et al, 1994) based on items derived from interviews with MS patients concerning how fatigue interferes in their lifes. The instrument provides an assessment of the effect of fatigue in terms of physical, mental and psychosocial functioning. Items on the MFIS can be aggregated into three subscales (physical, cognitive, and psychosocial), as well as into a total MFIS score. All items are scaled so that higher scores indicate a greater impact of fatigue on a person's activities. The Physical Subscale range from 0 to 36. The Cognitive Subscale ranges from 0 to 40. The Psychosocial Subscale ranges from 0 to 8.The total MFIS score can range from 0 to 84. It is computed by adding scores on the physical, cognitive, and psychosocial subscales.

The Multiple Sclerosis Quality of Life 54 (MSQoL-54) is a multidimensional health-related quality of life measure that combines both generic and MS-specific items into a single instrument. This 54-item instrument generates 12 subscales along with two summary scores, and two additional single-item measures. The subscales are: physical function, role limitations-physical, role limitations-emotional, pain, emotional well-being, energy, health perceptions, social function, cognitive function, health distress, overall quality of life, and sexual function. The summary scores are the physical health composite summary and the mental health composite summary, that are derived from a weighted combination of scale scores. Higher scores means better quality of life perceived.

The Multiple Sclerosis Quality of Life 54 (MSQoL-54) is a multidimensional health-related quality of life measure that combines both generic and MS-specific items into a single instrument. This 54-item instrument generates 12 subscales along with two summary scores, and two additional single-item measures. The subscales are: physical function, role limitations-physical, role limitations-emotional, pain, emotional well-being, energy, health perceptions, social function, cognitive function, health distress, overall quality of life, and sexual function. The summary scores are the physical health composite summary and the mental health composite summary, that are derived from a weighted combination of scale scores. Higher scores means better quality of life perceived.

Inclusion Criteria: People over 18 diagnosed of MS following the Mc Donald criteria, clinically stable who: show mild to moderate balance disorder (BBS>45). Mild risk of falls. refer fatigue during walking and restriction on their usual walking distance during the last 6 months. Accept to participate in the study and signed the informed consent. Exclusion Criteria: Other neurological disorders. Moderate to severe spasticity (Ashworth>2) Non stable heart diseases, diabetes mellitus, arthritis in lower limbs, acute pain in lower limbs, peripheral neuropathies, severe orthopedics problems, psychiatric problems, pregnancy. Incapacity to maintain a minimum walking rhythm at least during 15 minutes. Cognitive disability or body schema disorder that limits to fill in the assessment questionaires or understanding and applying the technique. To be training in other physical activities that can modify the level of fatigue or walking ability.

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