fitness
Faster knee for better walking
Scientists find knee extension velocity while seated strongly predicts walking performance in elderly patients after total knee arthroplasty
Scientists measured gait function, knee extension velocity while seated, quadriceps strength, knee range of motion, and knee pain in 186 total knee arthroplasty patients to identify the most important determinant of postoperative gait function.
« Faster knee for better walking
Newswise — Osaka, Japan – “Speed or strength, which is more important?” may be a critical question for not only athletes but also knee surgery patients. Osaka Metropolitan University scientists have revealed that knee extension velocity while seated is a stronger predictor of walking performance than muscle strength in elderly patients after their total knee arthroplasty (TKA) surgery.
TKA is the most common surgical intervention for knee osteoarthritis, a musculoskeletal disorder that mainly progresses with age. This surgery has been shown to be effective in relieving pain and restoring joint range of motion; however, TKA-enabled improvement in gait function may not be sufficient. Although the strength of the quadriceps—a muscle used to extend the knee—has been deemed to have a significant effect on postoperative gait function in TKA patients, there are many cases in which gait function does not improve even after quadriceps strength is restored. This raises a need to identify other factors influencing gait function.
A research team led by Professor Akira Iwata, from the Graduate School of Rehabilitation Science at Osaka Metropolitan University, hypothesized that the movement velocity of knee extension (i.e., knee extension velocity) is a strong determinant of gait function in TKA patients, and tested this hypothesis on 186 elderly patients who underwent TKA. Measurements were taken before and at 2 and 3 weeks after surgery and included gait function (gait speed and Timed Up and Go test), knee extension velocity, quadriceps strength, knee range of motion, and knee pain. Multiple regression analysis was performed to analyze the relationship between gait function and other variables.
The results show that the knee extension velocity on the operated side was the most important predictor of gait function in the participating patients. The findings were published in PLOS ONE.
“Thus far, rehabilitation programs aimed at recovering gait function after TKA surgery have focused on training to improve quadriceps strength,” explained Professor Iwata. “However, this study’s results suggest that training to enhance knee extension velocity on the operated side could be effective. We will continue to examine the effects of rehabilitation that concentrates on movement velocity.”
fitness
Real-World Weight Journeys: Exploring Health Experiences to Improve Care
Exploring Health Experiences: A number on a scale tells only part of the story. Living well is also about having energy, feeling your best and enjoying a good quality of life. Yet each person’s path is different, and lifestyle changes, medicines and other approaches to managing weight can affect health in different ways.
Real-World Weight Journeys: Exploring Health Experiences to Improve Care
(Feature Impact) A number on a scale tells only part of the story. Living well is also about having energy, feeling your best and enjoying a good quality of life. Yet each person’s path is different, and lifestyle changes, medicines and other approaches to managing weight can affect health in different ways.
No two weight-management journeys look the same. Some people are taking their first steps toward healthier habits. Others are balancing health conditions, caring for family members, coping with stress or exploring new treatment options. Along the way, they may find support that helps them succeed or encounter obstacles that make progress more difficult.
These stories provide valuable insights into what it takes to improve health in everyday life.
That’s the idea behind the American Heart Association’s Healthy Living BEYOND Weight Study. By learning directly from adults across the country, researchers aim to better understand the challenges, motivations and factors that shape weight and health outcomes over time. The goal is to generate insights that can help improve support, inform care and empower more people to live healthier lives.
What Factors Influence Weight
Nearly 1 in 3 U.S. adults are overweight and 2 in 5 are obese, according to the National Institutes of Health. Weight is shaped by many factors, including:
- Genetics and hormones
- Access to healthy food, safe places to exercise and healthcare
- Chronic stress and mental health
- Medications and metabolism
- Community conditions, as where you live can influence your ability to live a healthy life
How Joining a Study Can Make a Difference
Led by the American Heart Association, the Healthy Living BEYOND Weight Study is open to U.S. adults with a BMI of 25 or higher, including those who have tried lifestyle changes, weight-management medicines or weight-loss surgery. By sharing information about their health and daily lives, participants can help researchers better understand how to improve care.
Interest in newer weight-loss medicines, such as GLP-1s, has grown rapidly. While these treatments are helping many people, researchers are still learning about their long-term effects and how they fit into everyday life. People who currently use or previously used a GLP-1 may be eligible to participate and help generate insights that could improve care for others.
Reasons to Join This Study
By joining this study, participants can help researchers better understand the long-term impact of treatments, identify what helps people succeed and uncover the challenges they face along the way. The information they share can help fill important gaps in research, shape better and more compassionate care and guide future health recommendations.
According to the Pew Research Center, 31% of U.S. adults report they’re online “almost constantly.” The study is conducted entirely online, making participation convenient and easy. It can be completed from home on a schedule that works best for each participant.
Consider these reasons to participate:
- Your story matters. By participating, you may help build knowledge that can improve care, guide health recommendations and help people live healthier lives.
- It’s easy. The study is conducted entirely online, making it simple to join and stay involved at your own pace.
- It’s safe and respectful. All data is collected with your informed consent, protected by privacy safeguards and handled according to rigorous ethical and scientific standards.
- You won’t be alone. Millions of people are navigating weight and health challenges. By sharing your journey, you can help researchers better understand what works, what support is needed and how to shape better and more compassionate care for others.
Learn more and consider signing up at Heart.org/GoBeyond.
Photo courtesy of Shutterstock
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Food and Beverage
Beyond Protein: 2 Nutrients Your Plate Might Be Missing
Nutrients: Everyone is talking about protein these days whether watching their weight or managing a disease like type 2 diabetes. However, fiber and healthy fats are nutrients many people are overlooking. One food that makes it easier to invest in your health, according to nutrition experts: avocados.
Beyond Protein: 2 Nutrients Your Plate Might Be Missing
(Feature Impact) Everyone is talking about protein these days whether watching their weight or managing a disease like type 2 diabetes. However, fiber and healthy fats are nutrients many people are overlooking. The latest reports show most Americans already meet or exceed recommendations for protein while nearly all (about 95%) do not eat enough fiber, and many people consume too much saturated fat versus unsaturated fat, according to the 2025 Dietary Guidelines Advisory Committee. Prioritizing ways to get more fiber and healthy fats on your plate could be key to managing weight and type 2 diabetes goals this summer.
One food that makes it easier to invest in your health, according to nutrition experts: avocados.
A growing body of research and materials from Avocados – Love One Today, a science-based resource, suggests fresh avocados offer weight management benefits, help with type 2 diabetes management and are good for blood sugar management.
According to a study* of more than 27,000 adults published in the journal “Internal Medicine Review,” people who ate just over half of an avocado per day weighed 7.5 pounds less, had smaller waist sizes and tended to have healthier overall eating habits, including higher intakes of fiber and healthy fats, compared to people who didn’t eat avocados. Among the list of benefits, this delicious and healthy fruit uniquely contains fiber and healthy fats in each nutrient-dense bite which slows digestion, helping you feel satisfied and fuller longer which can help you consume fewer calories overall. In fact, if you’re using a GLP-1, avocados are one of the foods to add to your menu to make small meals feel more filling and satisfying while supporting nutrient needs.
Scientists also recently took a second look at the largest study* about avocado consumption to-date involving close to 1,000 adults, per the journal “Current Developments in Nutrition,” and found that consistently eating one avocado every day for six months (no other diet changes required) significantly reduced dietary glycemic load (GL) by nearly 14 points, a metric that evaluates how what you are eating is affecting your blood sugar levels. GL may be an important consideration in the management of chronic diseases like type 2 diabetes. By slowing digestion, fiber and healthy fats also support stable blood sugar levels.
There are many ways to enjoy avocados, including chopped, sliced, mashed, blended, in baked goods or even frozen. Avocados add flavor, variety and nutrition across the day.
Try these recipes for Avocado and Blueberry Chia Pudding, Avocado Breakfast Bowl with Leafy Greens for your next breakfast or snack.
*Remember: Small, consistent food choices can add up over time. Research suggests regularly eating avocados may support weight management and blood sugar targets while providing the fiber and healthy fats that many Americans are overlooking. These studies were supported by the Avocado Nutrition Center. While these findings are encouraging, the studies highlighted show an association, not cause and effect, and thus more research is needed to confirm these findings in other populations.
To explore evidence-based avocado nutrition information, along with practical tips and easy recipes, visit Avocados – Love One Today, a leading resource for avocado nutrition information.
Avocado and Blueberry Chia Pudding
- 1 1/2 cups plain, unsweetened soy milk (or milk of choice)
- 1 ripe, fresh avocado, halved, pitted and peeled
- 3/4 cup frozen blueberries
- 1/2 cup unsweetened vanilla Greek yogurt
- 1 tablespoon maple syrup
- 1/3 cup chia seeds
To Serve:
- 1/3 cup granola
- 1/3 cup fresh blueberries
- 1 kiwi, chopped
- 1/2 fresh, ripe avocado, halved, pitted, peeled and chopped
- In blender, puree soy milk, avocado, blueberries, yogurt and maple syrup until smooth. Pour mixture into storage container or bowl and add chia seeds. Whisk well to combine. Cover with lid or plastic wrap and refrigerate 4 hours or overnight, until thickened.
- To serve, divide into bowls and top with granola, fresh blueberries, kiwi and avocado.
- Notes: Use any milk (dairy or non-dairy) that you prefer in pudding. Use fresh blueberries or conventional frozen blueberries. Other topping options include: nuts, seeds, hemp hearts, sliced banana or strawberries, or nut butter.
Avocado Breakfast Bowl with Leafy Greens
Bowl:
- 1 medium sweet potato, chopped (about 1 3/4 cup)
- nonstick cooking spray
- 1/4 teaspoon smoked paprika
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt
- 1/2 cup quinoa
- 1 cup water, plus additional for boiling eggs, divided
- 2 eggs
- 2 cups arugula
- 1 ripe, fresh avocado, halved, pitted, peeled and chopped
- 1/4 cup pickled red onions
Avocado Tahini Dressing:
- 1/2 large avocado
- 1/4 cup tahini
- 1 lemon, juice only (2 tablespoons)
- 3/4 cup water
- 1 tablespoon fresh chives
- salt, to taste
- pepper, to taste
- Preheat oven to 400 F. Add chopped sweet potato to baking sheet. Spray with cooking oil then add smoked paprika, garlic powder and salt. Toss to coat in spices. Bake 22-25 minutes, or until tender.
- In medium saucepan, add quinoa and water. Bring to simmer and cover, cooking 12-15 minutes, or until quinoa is tender and fluffy.
- Fill small saucepan with water and bring to boil. Use slotted spoon to lower eggs into water. Cook 8 minutes then transfer eggs to bowl of ice water to cool before peeling.
- To make dressing: In small blender, puree avocado, tahini, lemon juice, water and fresh chives until smooth. Add more water, 1 tablespoon at a time, if needed, to thin until pourable. Season with salt and pepper, to taste.
- Assemble bowls, each with 1/2 sweet potato, 1/2 cup quinoa, 1 egg, 1 cup arugula, 1/2 avocado, 2 tablespoons pickled red onion and 3 tablespoons dressing. Reserve remaining dressing in refrigerator.
Heart-Healthy Frozen Avocado Banana Paleta
- 1 ripe, fresh avocado, halved, pitted, peeled and diced
- 4 cups orange juice
- 2 medium bananas, peeled and sliced
- 1 tablespoon lime juice
- 8 paper cups (5 ounces)
- 8 wooden craft sticks
- In blender, blend avocado, orange juice, bananas and lime juice on high until smooth. Divide into paper cups. Cover cups with aluminum foil. Insert one stick through center of each foil. Freeze 4 hours until firm.
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(Feature Impact) When it comes to stroke, time matters. Recognizing the warning signs and calling 911 quickly can help with receiving time-sensitive, life-saving treatment. Recovery should begin early, too.
Having a stroke can divide life into a stark before and after, affecting many aspects of daily life. While it’s easy to focus on the things a stroke can take away, it’s important to remember there’s life after stroke. Recovery isn’t just about relearning skills. It’s about adapting to new challenges, finding purpose in a different reality and continuing to move forward.
Navigating the aftermath of a stroke means balancing short-term and long-term plans. Once medically stable, rehabilitation should ideally begin within 48 hours, according to the 2026 Guideline for Adult Stroke Rehabilitation and Recovery from the American Stroke Association. Recovery doesn’t have a fixed end. Meaningful progress can continue for months or years after survivors leave the hospital or complete formal therapy.
“Stroke rehabilitation is complicated,” said Lorie Gage Richards, Ph.D., FAHA, volunteer chair of the new guideline, associate professor at the University of Utah and an occupational therapist. “Each person faces a different set of challenges and care should be personalized to fit each person’s needs. The goal is to help individuals gain as much independence as possible to perform everyday activities while improving their overall quality of life.”
Approximately 800,000 people have a stroke each year in the U.S, according to the American Heart Association’s 2026 Heart Disease and Stroke Statistics. Whether you’re navigating recovery yourself or supporting someone you love, connecting with a coordinated healthcare team is an important first step. Ask about a comprehensive assessment, develop a rehabilitation plan based on what matters to you and set small, achievable goals throughout recovery.
Building Skills and Independence
After a stroke, familiar parts of a daily routine may take more effort or require a new approach. A rehabilitation team can assess how stroke has affected movement, communication, thinking, vision, hearing and other abilities then develop a plan based on individual needs and goals.
Recovery doesn’t look the same for everyone. For one person, a meaningful goal may be dressing independently. For others, it could be returning to work, driving safely or participating in favorite activities. Start with manageable goals, evaluate progress and reassess the plan as needs change.
Understanding the Invisible Impacts
Some of the most challenging parts of recovery may be the ones others can’t see. For instance, you might lose confidence or sense of identity, have trouble concentrating or experience anxiety or depression. Along with mental and emotional changes, you may notice ongoing physical symptoms like pain, difficulty sleeping, changes in sexual function or difficulty with bladder control.
Invisible challenges don’t have to stay that way. Ask your healthcare team to assess your physical and emotional health, including depression and anxiety, during the hospital stay and throughout recovery. Speaking up about new or changing symptoms can help identify appropriate treatment and support.
Navigating Changing Relationships
When you have a stroke, your life isn’t the only one that changes. A partner, parent or friend may suddenly take on new responsibilities, making honest conversations about support especially important.
Family responsibilities may also look different. Parenting young children, supporting loved ones or balancing work and family can bring new challenges during recovery. Give yourself permission to slow down, accept care and connect with the people who matter most.
Finding Purpose and Redefining Success
Recreation, hobbies, social connections and other meaningful activities are an important part of recovery and can help people regain confidence, participate in their communities and improve quality of life. That may mean returning to music, art, exercise or time with friends. It could also mean modifying favorite activities, discovering new interests or connecting with a support group.
Life after stroke may look different, but different doesn’t mean less meaningful. Recovery isn’t measured by how closely someone returns to who they were before. It’s about finding new ways to pursue what matters most and continuing to move forward.
Learn more about recognizing stroke, preparing for rehabilitation and adjusting to life after stroke by visiting Stroke.org.
Photos courtesy of Shutterstock
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