scholarly journals A Longitudinal Study on the Relationship Between Aerobic Endurance and Lower Body Strength in Italian Sedentary Older Adults

2015 ◽  
Vol 23 (3) ◽  
pp. 444-451 ◽  
Author(s):  
Daniele Magistro ◽  
Filippo Candela ◽  
Paolo Riccardo Brustio ◽  
Monica Emma Liubicich ◽  
Emanuela Rabaglietti
Keyword(s):  
Older Adults ◽  
Independent Living ◽  
Active Aging ◽  
Lower Body ◽  
Design And Implementation ◽  
Body Strength ◽  
Lower Body Strength ◽  
The Relationship ◽  
Over Time ◽  
Physiological Systems

Functional aging processes are characterized by a loss of performance capabilities for most physiological systems, such as aerobic endurance and lower body strength, which are important for independent living and active aging. The present study examines the direction of influence between aerobic endurance and lower body strength over time in Italian sedentary older adults. A three-wave longitudinal model was tested using cross-lagged analysis for 202 individuals aged over 65 years (mean = 73.92, SD = 5.84; 140 females). Analysis revealed that aerobic endurance and lower body strength decline over time. In addition, greater aerobic endurance positively affected lower body strength over time; however, the converse was true only during the first period (first 6 months). These findings emphasize the importance of these relationships for the design and implementation of effective physical intervention for older adults.

Adoption of Canada's Physical Activity Guide and Handbook for Older Adults: Impact on Functional Fitness and Energy Expenditure

2004 ◽  
Vol 29 (4) ◽  
pp. 395-410 ◽  
Author(s):  
Xuesong Jiang ◽  
Juliette Cooper ◽  
Michelle M. Porter ◽  
A. Elizabeth Ready
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Energy Expenditure ◽  
Behaviour Change ◽  
Dynamic Balance ◽  
Functional Fitness ◽  
Lower Body ◽  
Body Strength ◽  
Lower Body Strength ◽  
Over Time

This study investigated whether a behaviour change program, based on Canada's Physical Activity Guide and Handbook to Healthy Active Living for Older Adults (Health Canada, 1999a), would elicit greater benefits than adoption of the guide and handbook alone. Fifteen older adults received the guide and accompanying handbook and completed the 8-week behaviour change program (mean age 73.2 ± 5.2 yrs), while 14 others received only the guide and handbook (mean age 76.8 ± 10.0 yrs). Functional fitness (lower body strength/endurance, flexibility, agility/dynamic balance) (Rikli and Jones, 1999), and estimated energy expenditure (DiPietro et al., 1993) were measured at baseline and after 8 weeks. Lower body strength/endurance and agility/dynamic balance differed between groups at baseline, p <  0.05. All three functional fitness tests improved in both groups over time, p <  0.05. Estimated energy expended in physical activity increased in both groups over time, p <  0.05; however, there was a significantly greater increase in the behaviour-change group (Group × Time interaction, p <  0.05). Participant response to using the guide and handbook was positive. These results indicate that introduction to Canada's Physical Activity Guide and Handbook to Healthy Active Living for Older Adults leads to benefits, whether or not accompanied by program supports. The group receiving the behaviour change program had a greater increase in energy expenditure, which suggests that such an intervention may ultimately lead to greater health benefits. Key words: behaviour change, chair stand test, community residing, lifestyle activity

scholarly journals The relationship between second-to-fourth digit ratio (2D:4D), muscle strength and body composition to bone mineral density in young women

Kinesiology ◽  
2019 ◽  
Vol 51 (2) ◽  
pp. 238-245
Author(s):  
Hamid Arazi ◽  
Ehsan Eghbali
Keyword(s):  
Body Composition ◽  
Muscle Strength ◽  
Young Women ◽  
Upper Body ◽  
Lower Body ◽  
Fat Percentage ◽  
Mineral Density ◽  
Body Strength ◽  
Lower Body Strength ◽  
The Relationship

2D:4D ratio is determined by balance between androgens and estrogens. Low level estrogen reduces bone mineral density (BMD) and incurs negative changes to bone microarchitecture, increasing the risk of osteoporosis and, as a consequence, fracture risk in women. The purpose of this study was to investigate the relationship between 2D:4D, muscle strength and body composition to BMD in young women. One hundred twenty-seven young women (age range 24-36 years) voluntarily participated in this study. Lengths of the second (index) and fourth (ring) fingers, upper and lower body strength and body composition (body mass index, BMI; waist to hip ratio, WHR) and body fat percentage were estimated. Also, blood levels of calcium and 25-hydroxyvitamin D (25OHD) were evaluated and dual-energy X-ray absorptiometry device was used to measure BMD in the lumbar spine (LS) and femoral neck (FN). The results showed that digit ratios, upper body and lower body muscle strength, BMI and fat percentage had a positive relationship with LS and FN BMD (LS BMD: r=.47, r=.56, r=.46, r=.34, r=.28, p≤.001, respectively; FN BMD: r=.34, r=.49, r=.51, r=.45, r=.27, p≤.001, respectively). In addition, there was no significant relationship between WHR and BMD of LS and FN (p˃.05). Multiple linear regression analysis showed the upper body strength was a stronger determinant of LS BMD and the lower body strength was a stronger determinant of FN BMD. Based on the results, the researchers concluded that upper and lower body strength, 2D:4D ratios and BMI were important determinants of young women’s BMD. Also, it seemed that some of these factors may be able to help predicting the osteoporosis potential in young women

Longitudinal Strength, Power, and Push-Start Performance Changes in a Skeleton Athlete: Case Study

2021 ◽  
pp. 1-4
Author(s):  
Tim J. Mosey ◽  
Lachlan J.G. Mitchell
Keyword(s):  
Body Weight ◽  
Linear Model ◽  
Mixed Effects ◽  
Relative Strength ◽  
Lower Body ◽  
Start Time ◽  
Body Strength ◽  
Longitudinal Strength ◽  
Lower Body Strength ◽  
The Relationship

Objectives: The purpose of this study was to document the longitudinal strength and power characteristic changes and race performance changes of a skeleton athlete. Method: Longitudinal strength and power changes were assessed with strength and power diagnostic testing over a 9-year period. Trends over 9 years for relative strength were analyzed using a linear model. Push-start time was recorded across multiple tracks. Trends over 9 years for start performance at each track were assessed using a mixed-effects linear model to account for the impact of different tracks. Lower-body strength and power changes were assessed via a 1-repetition-maximum squat and a body-weight countermovement jump. The relationship between strength and power changes was assessed over time. The relationship between strength changes and start performance was determined by assessing the fixed effect of relative strength changes on push-start time. Results: Relative lower-body strength ranged from 1.6 kg per body weight to 1.9 kg per body weight and showed a significant mean improvement of 0.05 kg per body weight per year (R2 = .71, P < .01). A negative correlation (R2 = .79) between relative strength changes and push-start performance across multiple tracks was found. The mixed-effects model indicated that push-start time improved significantly year to year (0.02 s; P < .001; R2 = .74) when controlling for the effect of track. Conclusions: The longitudinal analysis of push-start time and the associations with changes in strength suggest that training this quality can have a positive effect on push-start performance.

The Effects of Whole-Body Vibration Training on Upper and Lower Body Strength in Older Adults

2012 ◽  
Vol 24 (1-2) ◽  
pp. 35-50
Author(s):  
Chantelle C. Lachance ◽  
Kenji Kenno ◽  
Patricia L. Weir ◽  
Kelly M. Carr ◽  
Nancy McNevin ◽  
...  
Keyword(s):  
Older Adults ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Lower Body ◽  
Body Vibration ◽  
Body Strength ◽  
Vibration Training ◽  
Lower Body Strength ◽  
Whole Body Vibration Training

Does Yoga Engender Fitness in Older Adults? A Critical Review

2011 ◽  
Vol 19 (1) ◽  
pp. 62-79 ◽  
Author(s):  
Kaitlyn P. Roland ◽  
Jennifer M. Jakobi ◽  
Gareth R. Jones
Keyword(s):  
Older Adults ◽  
Weight Loss ◽  
Critical Review ◽  
Lower Body ◽  
Large Variability ◽  
Body Strength ◽  
Exercise Activity ◽  
Comprehensive Search ◽  
Lower Body Strength ◽  
And Function

Interest in yoga is growing, especially among older adults. This review critically summarizes the current literature to investigate whether physical fitness and function benefits are engendered through the practice of yoga in older adults. A comprehensive search yielded 507 studies; 10 studies with 544 participants (69.6 ± 6.3 yr, 71% female) were included. Large variability in yoga styles and measurement outcomes make it challenging to interpret results across studies. Studies reported moderate improvements for gait (ES = 0.54, 0.80), balance (ES = 0.25–1.61), upper/lower body flexibility (ES = 0.25, 0.70), lower body strength (ES = 0.51), and weight loss (ES = 0.73, 0.99). Yoga may engender improvements in some components of fitness in older adults. However, more evidence is needed to determine its effectiveness as an alternative exercise to promote fitness in older adults. Further investigation into yoga as an exercise activity for older adults is warranted.

THE RELATIONSHIP BETWEEN LOWER BODY STRENGTH AND POWER IN RESISTANCE TRAINED ATHLETES

1999 ◽  
Vol 31 (Supplement) ◽  
pp. S77
Author(s):  
A. Caterisano ◽  
C. W. Brown ◽  
L. P. Thurmond ◽  
D. R. Perkins ◽  
K. B. Linn ◽  
...  
Keyword(s):  
Lower Body ◽  
Body Strength ◽  
Lower Body Strength ◽  
The Relationship
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