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People with atrial fibrillation live longer with exercise

Four months of regular interval training reduced both the recorded flutter length and the symptoms of the disease. In addition, the exercise provided better quality of life and heart function. And last but not least: the training resulted in a marked increase in fitness.

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“Regular endurance training and good fitness seem to protect against serious cardiovascular events and early mortality for people diagnosed with atrial fibrillation,” says exercise physiologist Lars Elnan Garnvik.

Garnvik recently completed his doctorate at the Norwegian University of Science and Technology. His latest article was recently published in the prestigious European Heart Journal.

Garnvik and his colleagues in the Cardiac Exercise Research Group (CERG) have investigated how physical activity and good fitness levels are linked to future health risks for men and women who have been diagnosed with atrial fibrillation.

“The results show that people with atrial fibrillation who meet the authorities’ recommendations for physical activity generally live longer than patients who exercise less. They also have almost half the risk of dying from cardiovascular disease,” says Garnvik.

The minimum recommendation is to be physically active for 150 minutes of moderate intensity or 75 minutes of high intensity exercise each week. Moderate intensity means getting out of breath and sweaty, but still able to carry on a conversation. At high intensity you are so out of breath that you can’t speak in longer sentences.

“We found that both moderate and high intensity training are associated with significantly reduced risk,” says Garnvik.

People with atrial fibrillation have a higher health risk than same-aged individuals who do not have the disease. The new NTNU study also shows that inactive men and women with atrial fibrillation generally die earlier than inactive men and women without the condition.

“On the other hand, the risk for physically active participants with atrial fibrillation wasn’t higher than for physically inactive healthy people in the same age group,” Garnvik says.

The study includes a total of 1117 people who participated in the Trøndelag Health Study (HUNT Study) between 2006 and 2008. All had a confirmed atrial fibrillation diagnosis, and their average age was over 70. Garnvik used national health records to find out who died or was impacted by cardiovascular disease in the years leading up to and including 2015.

“It’s worth noting that this is an observational study, so the results cannot be used to establish definite causal relationships. However, we’ve tried to isolate the relationship between exercise and health risk as much as possible by adjusting the analyses for all other known differences between people who exercise a lot and a little,” he says.

In the study, the researchers calculated the condition of atrial fibrillation patients with CERG’s widely used Fitness Calculator. It was found that the participants with the lowest calculated fitness levels had the highest mortality risk during the follow-up period.

“For every 3.5 point increase in fitness score, the risk of dying dropped by 12 per cent over the next eight to nine years. In the case of cardiovascular-related deaths, this risk reduction was 15 per cent,” Garnvik says.

The fact that fitness is important is not new information.

“Both our research and other research suggests that staying in shape can be even more crucial to health than the level of physical activity. Our genes determine some of our fitness, but the vast majority of people can improve on their gene pool by exercising properly. This is also the case for individuals with atrial fibrillation,” he says.

Training in a way that actually influences your fitness level is especially important.

“Our research team has repeatedly shown that high-intensity interval training is more effective than moderate exercise for improving fitness. This is true for both healthy individuals and people with different types of lifestyle diseases,” says Garnvik.

No specific training recommendations for people with atrial fibrillation have been published yet. Last year, however, another CERG researcher completed his doctorate on the same topic. Cardiologist Vegard Malmo’s studies show that interval training using the 4 × 4 method is very effective for this group as well.

“The findings suggest that aerobic interval training has the same beneficial effect on risk factors in people with atrial fibrillation as in patients with other cardiovascular illnesses,” says Malmo.

Four months of regular interval training reduced both the recorded flutter length and the symptoms of the disease. In addition, the exercise provided better quality of life and heart function. And last but not least: the training resulted in a marked increase in fitness.

“Lifestyle changes, including exercise, should be key for treating atrial fibrillation,” Malmo says.

Biathlete Ole Einar Bjørndalen had to end his sports career due to atrial fibrillation. Cross-country ski racer Marit Bjørgen has experienced flutter episodes, and the same goes for several other high-level Norwegian and international endurance athletes.

“We know that very high levels of exercise over many years can increase the risk of developing atrial fibrillation. However, this is not something most of us need to worry about. Too little physical activity is a much greater cause of atrial fibrillation in the population than people exercising too much,” says Garnvik.

The people who exercise the most probably don’t tend to be the first to get scared and stop exercising if they have a flutter episode. A study of older people who participated in the Birkebeinerrennet – an annual long-distance cross-country ski marathon held in Norway – shows that two-thirds of these super-exercisers continue to train actively even after being diagnosed.

And they can do that with good conscience. Recently, Vegard Malmo and other Norwegian experts published an overview article on exercise and atrial fibrillation and concluded by saying: “We believe that most athletes with non-permanent atrial fibrillation can exercise without any restrictions when their heartbeat is normal. If they experience symptoms during exercise, the natural response will be to stop the activity.”

References:

Garnvik, L. E., Malmo, V., Janszky, I., Ellekjær, H., Wisløff, U., Loennechen, J. P., & Nes, B. M. (2020). Physical activity, cardiorespiratory fitness, and cardiovascular outcomes in individuals with atrial fibrillation: the HUNT study. European Heart Journal.

Malmo, V., Nes, B. M., Amundsen, B. H., Tjonna, A. E., Stoylen, A., Rossvoll, O., Wisløff, U., & Loennechen, J. P. (2016). Aerobic interval training reduces the burden of atrial fibrillation in the short term: a randomized trial.. Circulation, 133 (5), 466-473.

Myrstad, M., Malmo, V., Ulimoen, S. R., Tveit, A., & Loennechen, J. P. (2019). Exercise in individuals with atrial fibrillation. Clinical Research in Cardiology, 108 (4), 347-354.

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All work and no play will really make a dull life – research

‘Achievement’ and ‘conformity’ values had no impact on happiness whatsoever. However, the researchers believe achievement could impact on happiness when linked to job satisfaction or the amount of days worked.

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A study across three countries led by the Department of Psychology’s Dr Paul Hanel discovered people who prioritised achievement over enjoyment were less happy on the next day. Whereas those who aimed for freedom said they had a 13% increase in well-being, recording better sleep quality and life satisfaction. And participants who tried to relax and follow their hobbies recorded an average well-being boost of 8% and a 10% drop in stress and anxiety.

Dr Hanel worked with colleagues at the University of Bath on the Journal of Personality-published study. For the first time, it explored how following various values impacts our happiness.

Dr Hanel said: “We all know the old saying ‘All work and no play makes Jack a dull boy’ and this study shows it might actually be true. There is no benefit to well-being in prioritising achievement over fun and autonomy. This research shows that there are real benefits to having a balanced life and taking time to focus on enjoying ourselves and following individual goals. Ironically by doing this, people could in fact be more successful as they will be more relaxed, happier and satisfied.”

The study –Value Fulfilment and Well-being: Clarifying Directions Over Time – examined more than 180 people in India, Turkey and the UK. They filled in a diary across nine days and recorded how following different values affected them.

Interestingly all nationalities reported the same results with the following of ‘hedonism’ and ‘self-direction’ values leading to increased happiness. ‘Achievement’ and ‘conformity’ values had no impact on happiness whatsoever. However, the researchers believe achievement could impact on happiness when linked to job satisfaction or the amount of days worked.

Professor Greg Maio, University of Bath, said: “This multination project was an exciting foray into questions about how values affect well-being in day-to-day life. People often spend most of their days working hard for their daily income, studies, and careers. Against this backdrop, where achievement-oriented values have ring-fenced a great portion of our time, we found that it helps to value freedom and other values just enough to bring in balance and recovery.”

In the future, it will be interesting to consider how this pattern interacts with relevant traits, such as conscientiousness, and situational contexts, such as type of employment, Maio added.

It is hoped the research will now influence mental health provision and influence therapeutic give to clients.

Dr Hanel added: “Our research further shows that it might be more important to focus on increasing happiness rather than reducing anxiety and stress, which is of course also important, just not as much.”

The study was published in collaboration with Hamdullah Tunç, Divija Bhasin, and Dr Lukas Litzellachner.

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Why breast cancer survivors don’t take their medication, and what can be done

For roughly 80% of breast cancer survivors, treatment doesn’t end with surgery, radiation and chemotherapy. Instead, for the next five to 10 years, doctors recommend that they take medication to block sex hormones, which can fuel tumor growth and spark recurrence.

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For roughly 80% of breast cancer survivors, treatment doesn’t end with surgery, radiation and chemotherapy. Instead, for the next five to 10 years, doctors recommend that they take medication to block sex hormones, which can fuel tumor growth and spark recurrence.

The drugs are life-saving: They’ve been shown to cut risk of cancer recurrence by as much as half in patients with hormone receptor-positive tumors (HR+)—the most common form of breast cancer. Yet despite their promised benefits, 40% of patients stop taking them early and a third take them less frequently than directed.

New CU Boulder research, published this month in the Journal of Clinical Oncology, sheds light on why that is and what doctors and the health care system can do about it.

It found that, overall, interventions can increase medication adherence by nearly 1.5 times. But some strategies work better than others.

“Our bottom-line finding is that there are strategies that do work in supporting women to take these life-extending medications, and that we as a cancer care community need to do better,” said senior author Joanna Arch, a professor in the Department of Psychology and Neuroscience and member of the CU Cancer Center on the Anschutz Medical Campus.

Arch noted these so-called “adjuvant endocrine therapies,” like the estrogen-blockers Tamoxifen and aromatase inhibitors, can be costly and come with a host of side effects, including weight gain, sexual side effects, joint pain, depression and sleeplessness.

“Imagine going from your normal estrogen activity to little or no estrogen within days. That’s what these medications do,” she said. “But the women who take them as prescribed also have lower recurrence rates and live longer. It’s a dilemma.”

As more next-generation cancer drugs, including chemotherapy agents, shift from infusions provided in a clinic to oral therapies taken at home, the medical community has grown increasingly interested in developing ways to make sure patients take their pills.

In a sweeping meta-analysis, Arch and her colleagues analyzed 25 studies representing about 368,000 women to gain insight into what works and what doesn’t. 

Educational pamphlets are not enough 

The study found that cost-cutting policy changes, such as providing generic alternatives or requiring insurance companies to cover pills at the same level as infusions, consistently worked. Such “oral parity laws” have been passed in 43 states in recent years.

In one study, participants were asked to create stickers to put on their pill boxes.

Mobile apps and texts to remind patients to take their medication and psychological/coping strategies also yielded modest improvements.

The study’s findings around managing side effects were complicated: Simply educating women on side effects, via pamphlets or verbal explanations, generally failed to increase the likelihood that women took their medication as directed.

But things such as physical therapy, exercise and behavioral counseling aimed at alleviating or managing side effects often worked.

“Education in and of itself is not enough. That is a clear finding,” said Arch, suggesting that doctors write referrals to practitioners who specialize in side effects and follow up with appointment reminders. “Most oncologists, I believe, don’t realize how low adherence is for these women. They assume that if they write the prescription, it’s being taken.”

Addressing mental health is key

One study included in the meta-analysis was Arch’s own.

In it, women were asked to identify their primary motivation for taking their medication—whether it was living to see their child or grandchild grow up, pursuing their art or running a marathon someday. Via an online program, they created a sticker with a photo representing that goal, and the words “I take this for…” below it. Then, they stuck it on their pill box.

Participants were more likely to take their pills, at least for the first month, than those who didn’t.

“Even just a tiny thing like this can help,” said Arch.

Notably, very few studies looked at whether treating depression can help. Arch, aiming to fill this gap, recently launched her own pilot trial.

“One of the most consistent predictors of not adhering to any medication is depression,” she said. “Depression taps motivation.”

The new Journal of Clinical Oncology study is the first meta-analysis to show that interventions can be helpful, and that’s important, said Arch, because insurance companies need data to make decisions about what to cover.

But the study also showed that the effects are relatively modest and that there is room for improvement.

Arch said she hopes the study will spark more research into novel ways to support survivors:

“We have a lot of work to do.”

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Children with higher BMI at increased risk of developing depression

Associations between a higher BMI and depression were weaker between ages 16 and 21 indicating ages 12-16 is a sensitive point where preventative methods could be beneficial.

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Children between ages 12 and 16 with a higher body mass index (BMI) are at an increased risk of developing depression symptoms, new research has found.

Associations between a higher BMI and depression were weaker between ages 16 and 21 indicating ages 12-16 is a sensitive point where preventative methods could be beneficial.

The study, published in Psychological Medicine by researchers from King’s College London, analysed data from more than 10,000 twins in the Twins Early Development Study (TEDS) and UK Adult Twin Registry (TwinsUK).

In the TEDS depressive symptoms, such as low mood, loneliness and exhaustion, were self-reported in twins born between 1994 and 1996. Researchers looked at the relationship between BMI and depression at ages 12, 16 and 21.

They found that children between ages 12-16 with a higher BMI were at an increased risk of developing depression than between ages 16-21. Researchers also found that there was a stronger association for children with a higher BMI at an early age to develop depression at a later age, than children with depression first to have a higher BMI later in childhood.  

First author Dr Ellen Thompson, from King’s College London, said: “Understanding the relationship between mental ill-health and weight in adolescence is vital to provide timely support where needed. This study shows a stronger association between having a higher BMI at age 12 years and subsequent depression symptoms at age 16 years than the reverse.”

Using data from TEDS, the study also shows that the covariation between BMI and depression within each age was mostly explained by environmental factors.

Dr Thompson added: “This indicates that this relationship is environmentally mediated and could be due to several factors that adolescents may experience. Our study did not ask questions around the reasons why this effect was seen, but previous research has suggested body dissatisfaction and weight related stigma from external sources could be a factor. This study identifies a crucial point where intervention might be beneficial.”

Previous research found poverty may be a risk factor, however this study adjusted for socio-economic status and found the relationship between depression symptoms and weight to be unaffected.

This means that ages 12-16 is a sensitive and potentially detrimental time for young children and preventative measures would be beneficial. Support structures and positive body image messages could be taught in PHSE to counteract depressive symptoms.    

Co-senior author Professor Thalia Eley, Professor of Developmental Behavioural Genetics from King’s College London, said: “Our findings suggest that the experience of having higher BMI is associated with later depression. This study shows that early adolescence is a critical point for developing depressive symptoms associated with weight gain. Mental ill-health and obesity are growing concerns for Britain’s young people and this study shows how both are intertwined. Working with young teens to support them to have a positive body image using strategies such as focusing on health and wellbeing rather than weight may be useful in preventing subsequent depression.”

Co-senior author Professor Claire Steves, Professor of Ageing and Health at King’s College London, added: “Using the TwinsUK cohort, which focuses on older adult twins, our study showed that the relationship between BMI and depression was much weaker in later life.  The exact reasons for these changes over the life course need further investigation.”

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