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 The low-impact exercise improved swelling, physical fitness,
disability and quality of life, the study authors conclude in the
European Journal of Cancer Care.
"The main strategy in rehabilitation for women with breast cancer is
a change of habits, where physical exercise is a fundamental tool,"
said study co-author Jorge Torres of the Faculty of Educational
Sciences and Sports at the University of Vigo in Pontevedra, Spain.
"It's not easy to turn a sedentary person into an amateur athlete,
so sports such as Nordic walking are accepted more easily," Torres
told Reuters Health by email, particularly since the activity
doesn't require expensive equipment, can be done in a group with
others, and is easy to learn.
Introduced in the 1980s as a summer training exercise that was
similar to cross-country, or Nordic, skiing, Nordic walking became
more widespread in the 2000s. It's now part of some exercise-based
rehabilitation programs, especially in Northern Europe where it is
more common, Torres noted.
He also owns a personal training company, Vigo Entrena, that creates
physical activity programs for people with specific needs, including
injuries, obesity, pregnancy, postpartum and women with breast
cancer, and he specializes in Nordic walking training.
To see if this form of exercise helps women treated for breast
cancer to reduce side effects like arm swelling, and offers other
benefits of exercise, Torres and his colleagues analyzed nine
studies. Four studies were randomized controlled trials comparing
Nordic walking to other activities; the other studies focused on
specific effects of Nordic walking.
Periods of exercise in the studies ranged from 30 to 80 minutes and
were performed on one to five days a week for up to 12 weeks.
In eight of the nine studies, Nordic walking had a positive effect
on a number of breast cancer symptoms, including lymphedema,
fitness, upper-body strength, disability and perceptions of pain and
swelling.
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A handful of studies also showed improvements in depression,
self-efficacy for managing pain and improvements in physical
activity levels. They didn't find any adverse effects, and the study
participants seemed to stick with the programs.
The biomechanical gesture of Nordic walking, compared to just
walking, seemed to counteract some of the side effects that can come
from cancer treatment, such as shoulder-arm mobility and postural
problems, the study team writes.
"(Many) health professionals and therapists do not realize that
there are contraindicated exercises during breast cancer
rehabilitation and that alternatives such as Nordic walking can be
very effective," Torres said.
"Nordic walking is a structured form of physical activity which
nowadays has been shown to be 'more complete' than basic walking,"
said Marco Bergamin of the University of Padova in Italy, who wasn't
involved in the research review.
"Another important point that is less stressed by these authors:
quality of life," Bergamin said in an email. "Nordic walking gives
huge benefits because breast cancer patients are survivors, and from
a socio-psychological point of view, that really impacts their
life."
Future studies should also investigate the intensity, frequency,
duration, and length of exercise needed to help breast cancer
patients, said Lucia Cugusi of the University of Cagliari in Italy,
who also wasn't involved in the review.
"What is most evident is the growing interest of the scientific
community in tracking the needs, interests and preferences of
patients," Cugusi said by email. "Offering them novel forms of
physical activity that are both effective and engaging has become
one of the new and stimulating research fields in cancer therapy and
management."
SOURCE: https://bit.ly/31GeJ7p European Journal of Cancer Care,
online August 7, 2019.
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