Tag Archives: wellness

Meditation may physically alter regions of the brain

14 Wednesday Aug 2024

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Meditation may physically alter regions of the brain
 
Harvard researchers at the Massachusetts General Hospital reported that the practice of mindfulness meditation can physically alter regions of the brain associated with memory, sense of self, empathy, and stress.


The study, published in January 2015, in “Psychiatry Research: Neuro-imaging” indicates that the brain’s gray matter may change as a result of meditation.
“Although the practice of meditation is associated with a sense of peacefulness and physical relaxation, practitioners have long claimed that meditation also provides cognitive and psychological benefits that persist throughout the day,” said Sara Lazar, the study’s senior author. “This study demonstrates that changes in brain structure may underlie some of these reported improvements and that people are not just feeling better because they are spending time relaxing.”
Researchers measured MR images of participants brains during the eight-week “Mindfulness-Based Stress Reduction” program, conducted by the University of Massachusetts Center for Mindfulness. Participants spent an average of 27 minutes in meditation during the program. The program was delivered through recorded audios and guided meditations.

Compared to measurements on MR scans of a control group who did not participate in the program, the participants’ brains showed an increase in gray-matter density in the hippocampus. The hippocampus is the region of the brain associated with learning, introspection, memory and awareness. There also was a decrease in gray-matter density in the amygdala, the region associated with anxiety and stress. However, the Insula, a region of the brain thought to be associated with self-awareness according to earlier research, remained unchanged, and the researchers hypothesize that participants may have to meditate for longer periods of time before any change is noticed in this region.

It has been noted that meditation can reduce stress but according to Britta Hölzel, one of the authors, “Other studies in different patient populations have shown that meditation can make significant improvements in a variety of symptoms, and we are now investigating the underlying mechanisms in the brain that facilitate this change.”
The researchers believe that these findings of physiological change can pave the wave for a better understanding and treatment of stress-related disorders. The study was supported by the BBC, National Institutes of Health and the Mind and Life Institute.

a brain


https://news.harvard.edu/gazette/story/2011/01/eight-weeks-to-a-better-brain/

The Ten Rules For Being Human

29 Wednesday May 2024

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1. You will receive a body.

2. You will be presented with lessons.

3. There are no mistakes, only lessons.

4. Lessons are repeated until learned.

5. Learning does not end.

6. “There” is no better than “here.”

7. Others are only mirrors of you.

8. What you make of your life is up to you.

9. All the answers lie inside of you.

10. You will forget all of this at birth.

Evidence based Yoga 2

11 Wednesday Oct 2023

Posted by in Embodied, Wellness, Yoga

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Yoga is a mind and body practice in complementary medicine with origins in ancient Indian philosophy. Part two of evidence based Yoga:

Carpal tunnel syndrome A randomized, single-blind controlled trial of 42 patients with carpal tunnel syndrome assigned subjects to either a yoga treatment group or a wrist splint group, each 8 weeks in duration. Twice a week, the yoga group practiced postures specifically designed to strengthen and stretch each joint in the upper body. Yoga participants showed improvement in grip strength, pain levels, and Phalen’s sign when compared to the wrist splint group. Nerve conduction studies were not performed.15 A Cochrane review of 21 trials that evaluated the clinical outcome of nonsurgical treatment of carpal tunnel syndrome reported that 8 weeks of yoga practice significantly reduced pain as compared to wrist splinting. The yoga was described as having a “significant short-term benefit,” though the duration of this benefit is unknown.16

dog1

Depression A 2004 review of five RCTs that evaluated yoga-based interventions for depression and depressive disorders showed some positive outcomes and no adverse effects on patients’ mild to severe depressive disorders. However, poor study design and incomplete methodologic reporting makes this interpretation preliminary.17 An RCT studying 7 weeks of yoga training in a group of breast cancer survivors showed positive changes in emotional function, depression, and mood disturbance.18 “Yoga and stress management” (in the online version of this article) provides more information on this study and others involving the effects of yoga on stress.

Irritable bowel syndrome In an RCT, treatment with loperamide (Imodium) was compared to treatment with a series of 12 yoga postures practiced twice a day for 2 months in a small sample of patients with clinically diagnosed irritable bowel syndrome. Patients underwent measurement of surface electrogastrography, and trait and state anxiety tests were administered before, during, and up to 2 months after treatment. Both intervention groups demonstrated a decrease in bowel symptoms and state anxiety.19

Menopausal symptoms In a recent pilot study, 14 postmenopausal women reported via interview and questionnaire a decrease in the severity and frequency of hot flushes after 8 weeks of 90-minute “restorative yoga” classes. Although this initial finding sounds encouraging, this trial had no control group or objective parameter measurements.20 An RCT studying postmenopausal sleep quality divided 164 women into groups who participated in either 4 months of low-intensity yoga, a moderate-intensity walking program, or a wait-list control group. This study reported no statistically significant interventional effects of any treatment on total sleep quality or on any individual sleep quality domain.21

Multiple sclerosis An RCT of 57 subjects with clinically defined multiple sclerosis were assigned to weekly Iyengar yoga class plus home practice, a cycling program, or a wait-list control group for 6 months. Results showed that both active interventions produced significant improvement in perceived levels of energy and reduced fatigue; however, the specific effects of the yoga practice were not isolated.22 Osteoarthritis In a pilot study, 11 deconditioned, yoga naive subjects with a clinical diagnosis of knee osteoarthritis showed improvements in pain and knee stiffness after 8 weeks of yoga training. The group performed modified Iyengar yoga sessions once a week.23

Seizure disorders In 2000, a systematic review of the published literature revealed that only one study was able to meet the selection criteria for reliable research design. The reviewers concluded that no available evidence pointed to yoga therapy as an efficacious treatment for epilepsy.24

Strength and flexibility In a recent study on the fitness related effects of hatha yoga, 10 yoga-naïve and previously untrained subjects aged 18 to 27 years participated in 85 minutes of pranayama and hatha yoga practice twice a week for 8 weeks. These subjects showed significant improvement in upper and lower body muscular strength, endurance, and flexibility. No statistically significant change in body composition or pulmonary function was observed.13
In a partial RCT with a longer time frame, 54 subjects aged 20 to 25 years participated in either 5 months of yoga instruction or no activity. After that time period, both groups practiced yoga for an additional 5 months. The group practicing 10 months of yoga showed significant improvements in shoulder, trunk, hip, and neck flexibility, as well as a reported improved performance during submaximal exercise testing.25
A well-executed study compared subjects who underwent 24 hours of hatha yoga classes over 8 weeks with a control group. The yoga training group showed a 13% to 35% improvement in flexibility, balance, and muscular endurance. The authors concluded that hatha yoga practice has significant effects on balance and flexibility.26

REFERENCES

1. Tindle HA, Davis RB, Phillips RS, Eisenberg DM. Trends in use of complementary and alternative medicine by US adults: 1997-2002. Altern Ther Health Med. 2005;11(1):42-49.
2. Carrico M. Yoga Journal’s Yoga Basics: The Essential Beginner’s Guide to Yoga for a Lifetime of Health and Fitness. New York, NY: Henry Holt and Company; 1997.
3. Nayak NN, Shankar K. Yoga: a therapeutic approach. Phys Med Rehabil Clin N Am. 2004;15(4): 783-798, vi.
4. Innes KE, Bourguignon C, Taylor AG. Risk indices associated with the insulin resistance syndrome, cardiovascular disease, and possible protection with yoga: a systematic review.J Am Board Fam Pract. 2005;18(6):491-519.
5. Raub JA. Psychophysiologic effects of Hatha yoga on musculoskeletal and cardiopulmonary function: a literature review. J Altern Complement Med. 2002;8(6):797-812.
6. Luskin FM, Newell KA, Griffith M, et al. A review of mind-body therapies in the treatment of musculoskeletal disorders with implications for the elderly. Altern Ther Health Med. 2000;6(2): 46-56.
7. Jensen PS, Kenny DT. The effects of yoga on the attention and behavior of boys with attentiondeficit/ hyperactivity disorder (ADHD). J Atten Disord. 2004;7(4):205-216.
8. Kirkwood G, Rampes H, Tuffrey V, et al. Yoga for anxiety: a systematic review of the research evidence. Br J Sports Med. 2005;39(12):884-891.
9. Krisanaprakornkit T, Krisanaprakornkit W, Piyavhatkul N, Laopaiboon M. Meditation therapy for anxiety disorders. Cochrane Database Syst Rev. 2006;(1):CD004998.
10. Sabina AB, Williams AL, Wall HK, et al. Yoga intervention for adults with mild-to-moderate asthma: a pilot study. Ann Allergy Asthma Immunol. 2005;94(5):543-548.
11. Vendanthan PK, Kesavalu LN, Murthy KC, et al. Clinical study of yoga techniques in university students with asthma: a controlled study. Allergy Asthma Proc. 1998;19(1):3-9.
12. Sherman KJ, Cherkin DC, Erro J, et al. Comparing yoga, exercise, and a self-care book for chronic low back pain: a randomized, controlled trial. Ann Intern Med. 2005;143(12):849-856.
13. Tran MD, Holly RG, Lashbrook J, Amsterdam EA. Effects of Hatha yoga practice on the healthrelated aspects of physical fitness. Prev Cardiol. 2001;4(4):165-170.
14. Clay CC, Lloyd LK, Walker JL, et al. The metabolic cost of Hatha yoga. J Strength Cond Res. 2005;19(3):604-610.
15. Garfinkel MS, Singhal A, Katz WA, et al. Yoga-based intervention for carpal tunnel syndrome: a randomized trial. JAMA. 1998;280(18):1601-1603.
16. O’Connor D, Marshall S, Massy-Westropp N. Nonsurgical treatment (other than steroid injection) for carpal tunnel syndrome. Cochrane Database Syst Rev. 2003(1):CD003219.
17. Pilkington K, Kirkwood G, Rampes H, Richardson J. Yoga for depression: the research evidence. J Affect Disord. 2005;89(1-3):13-24.
18. Culos-Reed SN, Carlson LE, Daroux LM, Hately-Aldous S. A pilot study of yoga for breast cancer survivors: physical and psychological benefits. Psycho Oncol. 2006;15(10):891-897.
19. Taneja I, Deepak KK, Poojary G, et al. Yogic versus conventional treatment in diarrheapredominant irritable bowel syndrome: a randomized control study. Appl Psychophysiol Biofeedback. 2004;29(1):19-33.
20. Cohen BE, Kanaya AM, Macer JL, et al. Feasibility and acceptability of restorative yoga for treatment of hot flushes: a pilot trial. Maturitas. 2007;56(2):198-204.
21. Elavsky S, McAuley E. Lack of perceived sleep improvement after 4-month structured exercise programs. Menopause. 2007;14(3, pt 1):535-540.
22. Oken BS, Kishiyama S, Zajdel D, et al. Randomized controlled trial of yoga and exercise in multiple sclerosis. Neurology. 2004;62(11):2058-2064.
23. Kolasinski SL, Garfinkel M, Tsai AG, et al. Iyengar yoga for treating symptoms of osteoarthritis of the knees: a pilot study. J Altern Complement Med. 2005;11(4):689-693.
24. Ramaratnam S, Sridharan K. Yoga for epilepsy. Cochrane Database Syst Rev. 2000(3):CD001524.
25. Ray US, Mukhopadhyaya S, Purkayastha SS, et al. Effect of yogic exercises on physical and mental health of young fellowship course trainees. Indian J Physiol Pharmacol. 2001;45(1):37-53.
26. Boehde D, Porcari JP, Greany J, et al. The physiological effects of 8 weeks of yoga training. J Cardiopulm Rehabil. 2005;25(5):290.

Evidence based Yoga

04 Wednesday Oct 2023

Posted by in Research, Yoga

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Yoga is a mind and body practice in complementary medicine with origins in ancient Indian philosophy. The various styles of yoga that people use for health purposes typically combine physical postures, breathing techniques, and meditation or relaxation. There are numerous schools of yoga. Hatha yoga, the most commonly practiced in the United States and Europe, emphasizes postures (asanas) and breathing exercises (pranayama).

Since the 1020’s researchers have been studying and publishing articles on the results of a Yoga practice. Listed below are some of the research results of Hatha Yoga and specific medical conditions. :

Utthita Trikonasana

ADHD Eighteen boys with diagnosed attention-deficit/hyperactivity disorder (ADHD) were randomly assigned to either a yoga treatment or a cooperative activities group. After 20 sessions of yoga, the boys showed improvement on a variety of indices, including oppositional behavior, emotional lability, and restlessness or impulsivity. The subjects exhibited a dose/ response curve, with those subjects who participated in additional home practice showing a greater response. The control group showed superior scores on measures of hyperactivity, anxiety, and shyness, as well as social function measures.7

Anxiety A meta-analysis of the research involving yoga interventions for anxiety and related disorders reviewed eight studies conducted during 2004. Overall, this research reported positive results, especially in cases of obsessive-compulsive disorder. However, the authors were quick to point out a generally poor quality of research techniques, inadequacies in methodology, and difficulty comparing studies.8 A Cochrane review of two RCTs that investigated the effectiveness of meditation and yoga on patients with diagnosed anxiety disorders stated that based on the available research, no distinct conclusions can be drawn on the ability of meditation and yoga to be effective for anxiety disorders.9

Asthma To determine the efficacy of Iyengar yoga practice on symptoms and perceived quality of life of people living with asthma, 62 patients with mild to moderate asthma were randomized and divided into two groups. The treatment group performed Iyengar yoga for 4 weeks, and the control group enrolled in a “stretching” program. Both groups underwent spirometry testing and recorded their bronchodilator use, symptoms, and quality of life assessments. At no point in the study did the yoga intervention group show a measured benefit in clinical indices.10

Another small RCT divided 17 subjects into a yoga treatment and a control group. The yoga group engaged in relaxation pranayama (mindful breathing) techniques, yoga postures, and meditation 3 times per week for 16 weeks. Spirometry testing showed little difference between the two groups; however, the yoga group showed improved exercise tolerance and reported relaxation as well as a more positive attitude as measured by questionnaire. This study also showed a trend toward less use of short-acting bronchodilator medication in the yoga group.11

Back pain A 12-week RCT compared viniyoga practice with conventional therapeutic back exercises or a self-help book for 101 patients with chronic low back pain. The yoga group met with one instructor for a weekly 75-minute viniyoga practice. Patients were also encouraged to practice at home daily and were given handouts and an audio CD guide. This group showed greater improvement in functional status, decreased activity restriction, and increased general health compared to the conventional exercise group or the self-help book group at 12 weeks. At 26 weeks post treatment, the conventional exercise and yoga therapy group did not show a significant difference in outcome, though at all points in time, viniyoga therapy appeared to be more effective than the self- care book. The viniyoga benefit also lasted for months after the intervention.12

Cardiovascular disease A systematic literature review of 70 studies published over the past two decades showed a trend toward beneficial changes in metabolic syndrome risk factors such as insulin resistance, lipid profiles, BP, and anthropomorphic indices. The author noted that by controlling risk factors for metabolic syndrome, a regular yoga practice might possibly reduce the risk of cardiovascular disease (CVD). It is important to note that approximately one-third of the reviewed studies were RCTs and that the majority of the others were uncontrolled or nonrandomized controlled clinical trials.4 A 2002 comprehensive review of the literature on the psychophysiological effects of hatha yoga concluded that regular hatha yoga practice and a “yoga lifestyle” have the potential to benefit CVD risk indices.5

Cardiovascular fitness A 50-minute hatha yoga routine burns 2.2 to 3.6 kcal/min, the equivalent a very slow walk. Except in persons who are very deconditioned, this type of yoga practice alone is unlikely to have a significant training effect on cardiovascular fitness, pulmonary function, body composition, or fat metabolism.13 More vigorous forms of power or vinyasa yoga require a higher energy output, depending on the method of teaching and selection of asanas (postures). One recent study demonstrated a 7% increase in VO2 max after previously sedentary subjects practiced 8 weeks of yoga training.13However, the general consensus is that yoga does not provide the significant cardiovascular stimulus necessary to enhance cardiovascular function.14

REFERENCES

1. Tindle HA, Davis RB, Phillips RS, Eisenberg DM. Trends in use of complementary and alternative medicine by US adults: 1997-2002. Altern Ther Health Med. 2005;11(1):42-49.

2. Carrico M. Yoga Journal’s Yoga Basics: The Essential Beginner’s Guide to Yoga for a Lifetime of Health and Fitness. New York, NY: Henry Holt and Company; 1997.

3. Nayak NN, Shankar K. Yoga: a therapeutic approach. Phys Med Rehabil Clin N Am. 2004;15(4): 783-798, vi.

4. Innes KE, Bourguignon C, Taylor AG. Risk indices associated with the insulin resistance syndrome, cardiovascular disease, and possible protection with yoga: a systematic review.J Am Board Fam Pract. 2005;18(6):491-519.

5. Raub JA. Psychophysiologic effects of Hatha yoga on musculoskeletal and cardiopulmonary function: a literature review. J Altern Complement Med. 2002;8(6):797-812.

6. Luskin FM, Newell KA, Griffith M, et al. A review of mind-body therapies in the treatment of musculoskeletal disorders with implications for the elderly. Altern Ther Health Med. 2000;6(2): 46-56.

7. Jensen PS, Kenny DT. The effects of yoga on the attention and behavior of boys with attentiondeficit/ hyperactivity disorder (ADHD). J Atten Disord. 2004;7(4):205-216.

8. Kirkwood G, Rampes H, Tuffrey V, et al. Yoga for anxiety: a systematic review of the research evidence. Br J Sports Med. 2005;39(12):884-891.

9. Krisanaprakornkit T, Krisanaprakornkit W, Piyavhatkul N, Laopaiboon M. Meditation therapy for anxiety disorders. Cochrane Database Syst Rev. 2006;(1):CD004998.

10. Sabina AB, Williams AL, Wall HK, et al. Yoga intervention for adults with mild-to-moderate asthma: a pilot study. Ann Allergy Asthma Immunol. 2005;94(5):543-548.

11. Vendanthan PK, Kesavalu LN, Murthy KC, et al. Clinical study of yoga techniques in university students with asthma: a controlled study. Allergy Asthma Proc. 1998;19(1):3-9.

12. Sherman KJ, Cherkin DC, Erro J, et al. Comparing yoga, exercise, and a self-care book for chronic low back pain: a randomized, controlled trial. Ann Intern Med. 2005;143(12):849-856.

13. Tran MD, Holly RG, Lashbrook J, Amsterdam EA. Effects of Hatha yoga practice on the healthrelated aspects of physical fitness. Prev Cardiol. 2001;4(4):165-170.

14. Clay CC, Lloyd LK, Walker JL, et al. The metabolic cost of Hatha yoga. J Strength Cond Res. 2005;19(3):604-610.