Comparing the aerobic demand of various pieces of accessible exercise equipment in individuals with multiple sclerosis
AuthorSnyder, Kaitlyn JG
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AbstractCurrent research in the effectiveness of different aerobic exercise modalities for individuals with MS is incomplete. The primary aim of this study is to compare the aerobic response of six selected pieces of accessible exercise equipment at a moderate intensity, as indicated by the current exercise guidelines for individuals with MS. Exercise equipment preference was evaluated using a questionnaire. Participants (n=10) performed a steady-state exercise test on an arm ergometer, arm-leg recumbent stepper, body weight supported treadmill, arm-leg functional electrical stimulation (FES) recumbent stepper, arm FES cycle ergometer, and leg FES cycle. The average VO2 (mlkgmin-1) was recorded on each piece of equipment. Here, the body weight support treadmill, arm leg FES recumbent stepper, and the arm leg stepper were significantly more aerobically demanding than the arm ergometer (p<.05). Further, there were no differences in pain (p> .05), safety (p> .05), enjoyment (p >.05), or anticipated adherence to exercise guidelines in duration (p >.05) or frequency (p> .05). In this study, all forms of accessible aerobic exercise were equally aerobically demanding and preferred in individuals with MS, with the exception of the arm ergometer being less aerobically demanding.
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The effect of a weighted-vest strength and balance training program on obstructed walking in postmenopausal womenSlack, Jill Patricia.; Applied Health Sciences Program (Brock University, 2003-05-21)SUMMARY Background: Age related declines in lower extremity strength have been associated with impaired mobility and changes in gait patterns, which increase the likelihood of falls. Since community dwelling adults encounter a wide range of locomotor challenges including uneven and obstmcted walking surfaces, we examined the effect of a strength 11 and balance exercise program on obstructed walking in postmenopausal women. Objectives: This study examined the effect of a weighted-vest strength and balance exercise program on adaptations of the stance leg during obstacle walking in postmenopausal women. Methods: Eighteen women aged 44-62 years who had not engaged in regular resistance training for the past year were recruited from the St. Catharines community to participate in this study. Eleven women volunteered for an aerobic (walking), strength, and balance training program 3 times per week for 12 weeks while 7 women volunteered as controls. Measurements included: force platform dynamic balance measure of the center of pressure (COP) and ground reaction forces (GRFs) in the stance leg while going over obstacles of different heights (0,5, 10,25 and 30 cm); and isokinetic strength measures of knee and ankle extension and flexion. Results: Of the 18 women, who began the trial, 16 completed it. The EX group showed a significant increase of 40% in ankle plantar flexion strength (P < 0.05). However, no improvements in measures of COP or GRFs were observed for either group. Failure to detect any changes in measures of dynamic balance may be due to small sample size. Conclusions: Postmenopausal women experience significant improvements in ankle strength with 12 weeks of a weighted-vest balance and strength training program, however, these changes do not seem to be associated with any improvement in measures of dynamic balance.
Relationship between physical activity and resting secretory immunity in childrenCieslak, Thomas J.; Applied Health Sciences Program (Brock University, 2002-05-21)This study examined relationships among physical activity, body fat and salivary immonoglobulin A (sIgA) levels in adolescent children of Southern Ontario. Gender differences on these factors were also assessed. Sixty-one grade-five students (10-1 lyrs), males (n=29) and females (n=31), who had not received a flu vaccination in the past 12 months, participated in the study. They were assessed for: aerobic power (20-m shuttle run), relative body fat (bioelectrical impedance analysis), sIgA, sIgA/albumin ratio, and salivary Cortisol. Each subject completed the Habitual Activity Estimation Scale and the Participation Questioimaire. Students wore a pedometer for 48h to estimate their average total distance traveled per day. The results show 40% of the children were over 25% body fat and 50% of them spend less than five hours per day in any physical activities. Salivary IgA was not related to salivary Cortisol, physical activity, fitness level or body fat in this age group. There were no gender differences in sIgA and Cortisol levels. Boys had a significantly higher aerobic power and daily distance traveled, but reported similar organized and fi-ee time activity participation levels as the girls. The test-retest reproducibility for salivary Cortisol was 0.663 (p<0.01), while long term sIgA and sIgA/albumin ratio reproducibility was non-significant for repeated measurements taken after six weeks. It was found that salivary IgA has not been shovm to be a stable measure in children, in contrast to the results found in the literatiu-e that tested adults and the relationship with physical activity, fitness level and body fat.
The Clinical Translation Gap in Child Health Exercise Research: A Call for Disruptive InnovationAshish, Naveen; Bamman, Marcas; Cerny, Frank; Cooper, Dan; d'Memecourt, Pierre; Eisenmann, Joey; Ericson, Dawn; Fahey, John; Falk, Bareket; Gabriel, Davera; et al. (Wiley, 2015-02)In children, levels of play, physical activity, and fitness are key indicators of health and disease and closely tied to optimal growth and development. Cardiopulmonary exercise testing (CPET) provides clinicians with biomarkers of disease and effectiveness of therapy, and researchers with novel insights into fundamental biological mechanisms reflecting an integrated physiological response that is hidden when the child is at rest. Yet the growth of clinical trials utilizing CPET in pediatrics remains stunted despite the current emphasis on preventative medicine and the growing recognition that therapies used in children should be clinically tested in children. There exists a translational gap between basic discovery and clinical application in this essential component of child health. To address this gap, the NIH provided funding through the Clinical and Translational Science Award (CTSA) program to convene a panel of experts. This report summarizes our major findings and outlines next steps necessary to enhance child health exercise medicine translational research. We present specific plans to bolster data interoperability, improve child health CPET reference values, stimulate formal training in exercise medicine for child health care professionals, and outline innovative approaches through which exercise medicine can become more accessible and advance therapeutics across the child health spectrum.