scholarly journals Effects of run sprint interval training on healthy, inactive, overweight/obese women: A pilot study

FACETS ◽  
2017 ◽  
Vol 2 (1) ◽  
pp. 53-67 ◽  
Author(s):  
Taylor W. Rowley ◽  
Jennifer L. Espinoza ◽  
Jeremy D. Akers ◽  
David L. Wenos ◽  
Elizabeth S. Edwards

This study examined the effects of a 12 week, treadmill-based, run sprint interval training (SIT) protocol compared with that of a moderate-intensity continuous training (MICT) protocol in healthy, inactive, overweight/obese women, on cardiovascular disease risk factors. After random assignment, the SIT group completed 4–10 × 30 s maximal sprints, with a 4 min active recovery between sprints, and the MICT group completed 30–60 min at moderate intensity (45–55% heart rate reserve (HRR)). The rate of perceived exertion (RPE) was recorded for each session, and perceived enjoyment was quantified every 3 weeks. Clinical and fitness testing were completed at baseline, 6 weeks, and 12 weeks. Twelve female participants (age: 34.1 ± 6.1; body mass index (BMI): 31.3 ± 6.8; VO2peak: 27.0 ± 6.2) completed the intervention. There were significant main effects for time for VO2peak ( p = 0.001), body fat percentage ( p = 0.001), and session RPE ( p = 0.006). VO2peak improved 20.7% in the SIT group ( n = 5) and 24.4% in the MICT group ( n = 7). Body fat percentage reduced by 1.7% in the SIT group and 2.6% in the MICT group. Perceived enjoyment was similarly high between the groups despite higher session RPE in the SIT group ( p = 0.441). SIT training on a motor-driven treadmill elicits similar improvements in oxygen utilization and body composition as moderate-intensity training in this population.

2014 ◽  
Vol 46 ◽  
pp. 686
Author(s):  
Taylor K. Wenos ◽  
Jennifer L. Espinoza ◽  
Jeremy D. Akers ◽  
David L. Wenos ◽  
Elizabeth Skidmore Edwards

2019 ◽  
Vol 53 (10) ◽  
pp. 655-664 ◽  
Author(s):  
Ricardo Borges Viana ◽  
João Pedro Araújo Naves ◽  
Victor Silveira Coswig ◽  
Claudio Andre Barbosa de Lira ◽  
James Steele ◽  
...  

ObjectivesTo compare the effects of interval training and moderate-intensity continuous training (MOD) on body adiposity in humans, and to perform subgroup analyses that consider the type and duration of interval training in different groups.DesignSystematic review and meta-analysis.Data sourcesEnglish-language, Spanish-language and Portuguese-language searches of the electronic databases PubMed and Scopus were conducted from inception to 11 December 2017.Eligibility criteria for selecting studiesStudies that met the following criteria were included: (1) original articles, (2) human trials, (3) minimum exercise training duration of 4 weeks, and (4) directly or indirectly compared interval training with MOD as the primary or secondary aim.ResultsOf the 786 studies found, 41 and 36 were included in the qualitative analysis and meta-analysis, respectively. Within-group analyses showed significant reductions in total body fat percentage (%) (interval training: −1.50 [95% CI −2.14 to −0.86, p<0.00001] and MOD: −1.44 [95% CI −2.00 to −0.89, p<0.00001]) and in total absolute fat mass (kg) (interval training: −1.58 [95% CI −2.74 to −0.43, p=0.007] and MOD: −1.13 [95% CI −2.18 to −0.08, p=0.04]), with no significant differences between interval training and MOD for total body fat percentage reduction (−0.23 [95% CI −1.43 to 0.97], p=0.705). However, there was a significant difference between the groups in total absolute fat mass (kg) reduction (−2.28 [95% CI −4.00 to −0.56], p=0.0094). Subgroup analyses comparing sprint interval training (SIT) with MOD protocols favour SIT for loss of total absolute fat mass (kg) (−3.22 [95% CI −5.71 to −0.73], p=0.01). Supervised training, walking/running/jogging, age (<30 years), study quality and intervention duration (<12 weeks) favourably influence the decreases in total absolute fat mass (kg) observed from interval training programmes; however, no significant effect was found on total body fat percentage (%). No effect of sex or body mass index was observed on total absolute fat mass (kg) or total body fat percentage (%).ConclusionInterval training and MOD both reduce body fat percentage (%). Interval training provided 28.5% greater reductions in total absolute fat mass (kg) than MOD.Trial registration numberCRD42018089427.


Author(s):  
Nivash Rugbeer ◽  
Demitri Constantinou ◽  
Georgia Torres

Background: High-intensity training is comprised of sprint interval training (SIT) and high-intensity interval training (HIIT). This study compared high-intensity training with moderate-intensity continuous training (MICT) on cardiorespiratory fitness (CRF) and body fat percentage for overweight or obese persons. Methods: A systematic search of randomized controlled trials using the health science databases occurred up to April, 2020. Twenty-six studies were included for complete analysis. A total of 784 participations were analyzed. The unstandardized mean difference for each outcome measurement was extracted from the studies and pooled with the random effects model. Results: MICT was significantly better at improving CRF compared with SIT (mean difference = −0.92; 95% confidence interval, −1.63 to −0.21; P = .01; I2 = 10%). Furthermore, there was no significant difference between MICT versus HIIT on CRF (mean difference = −0.52; 95% confidence interval, −1.18 to 0.13; P = .12; I2 = 23%). There was no significant difference in body fat percentage between MICT versus HIIT and MICT versus SIT. Conclusions: MICT was significantly better at improving CRF than SIT in overweight or obese persons.


2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S279
Author(s):  
K Martin ◽  
J S. Green ◽  
J W. Womack ◽  
K L. Hill ◽  
K Meyer ◽  
...  

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Yingchang Lu ◽  
Felix R. Day ◽  
Stefan Gustafsson ◽  
Martin L. Buchkovich ◽  
Jianbo Na ◽  
...  

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 366-366
Author(s):  
Martin Jr Rosas ◽  
Sherry Pinneo ◽  
Celeste O'Mealy ◽  
Changqi Liu ◽  
Mark Kern ◽  
...  

Abstract Objectives Mangos contain many beneficial dietary compounds including vitamins, minerals, fiber, and are a unique source of certain polyphenols such as mangiferin. Accumulating evidence from in vitro and animal studies have demonstrated that mangos may have antidiabetic, anti-inflammatory, and cardioprotective properties. However, the effects of fresh mango consumption in humans are less clear. The objective of this study was to examine the effects of fresh mango consumption compared to an isocaloric snack (low-fat cookies) on body weight, body fat, blood pressure, glucose, insulin, lipid profiles, liver function enzymes, inflammation, and antioxidant activity in overweight and obese adults. Methods In a randomized crossover design, 27 overweight and obese adults (11 females, 16 males, age 26 ± 8.1 years) consumed 100 Kcal of fresh mangos (166g) or isocaloric low-fat cookies (24g) daily for 12 weeks. Following an overnight fast, a venous blood draw was taken at baseline, week 4, and week 12. Blood samples were analyzed for glucose, insulin, lipid profiles, liver function enzymes, C-reactive protein (CRP), and total antioxidant capacity (TAC). At each visit, body weight, body fat percentage, and blood pressure were measured. Results Twelve weeks of daily mango consumption significantly decreased blood glucose, CRP, and aspartate transaminase (AST) activity while TAC significantly increased (P &lt; 0.05). There were no significant changes in body weight, body fat percentage, blood pressure, insulin, lipid profile, or other liver function enzymes following mango consumption. Cookie consumption significantly increased insulin, CRP, and triglycerides (P &lt; 0.05). Conclusions Mango consumption improved certain chronic disease risk factors including reductions in fasting glucose and inflammation while lipid profiles and anthropometric measurements were not affected. These results suggest that relative to the control snack, daily mango consumption may improve certain risk factors associated with overweight and obesity and should be considered for future research as they contain unique bioactive compounds. Funding Sources This study was funded by the National Mango Board.


1998 ◽  
Vol 274 (2) ◽  
pp. E280-E286 ◽  
Author(s):  
W. J. Pasman ◽  
M. S. Westerterp-Plantenga ◽  
W. H. M. Saris

The effect of endurance training on plasma leptin levels was investigated in 15 obese male subjects (age 37.3 ± 5.2 yr, body weight 96.5 ± 13.6 kg, and body mass index 29.8 ± 3.0 kg/m2) in a weight loss and exercise program. After 4 mo of treatment consisting of a very low energy diet (VLED) and endurance exercise training (3–4 times weekly, 1 h sessions, moderate intensity), two groups were formed. One group continued the exercise sessions (trained subjects, n = 7) and the other group stopped with the exercise program (control, n= 8). Measurements of anthropometry, aerobic power, and fasted blood samples were executed at fixed time points (0, 2, 4, 10, and 16 mo). With partial regression analysis, keeping the changes in insulin and body fat percentage constant, it was shown that the number of hours of exercise training was significantly correlated with changes in leptin levels, during the 16-mo period ( r = 0.56, P < 0.05). Changes in insulin levels were significantly related to the changes in leptin levels ( r = 0.47, P < 0.05), which were less for changes in body fat percentage ( r = 0.42, P = 0.07). During the VLED, the change in insulin concentration affected leptin levels significantly ( r = 0.79) but changes in body fat percentage were not noted. It is concluded that endurance exercise training decreased plasma leptin levels independently of changes in plasma insulin levels and body fat percentage.


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Mahnaz Kazemipoor ◽  
Che Wan Jasimah Bt wan Mohamed Radzi ◽  
Majid Hajifaraji ◽  
Batoul Sadat Haerian ◽  
Mohammad Hossein Mosaddegh ◽  
...  

Caraway (Carum carviL.), a potent medicinal plant, is traditionally used for treating obesity. This study investigates the weight-lowering effects of caraway extract (CE) on physically active, overweight and obese women through a randomized, triple-blind, placebo-controlled clinical trial. Seventy overweight and obese, healthy, aerobic-trained, adult females were randomly assigned to two groups (n=35per group). Participants received either 30 mL/day of CE or placebo without changing their diet or physical activity. Subjects were examined at baseline and after 90 days for changes in body composition, anthropometric indices, and clinical and paraclinical variables. The treatment group, compared with placebo, showed a significant reduction of weight, body mass index, body fat percentage, and waist-to-hip ratio. No changes were observed in lipid profile, urine-specific gravity, and blood pressure of subjects. The results suggest that a dietary CE with no restriction in food intake, when combined with exercise, is of value in the management of obesity in women wishing to lower their weight, BMI, body fat percentage, and body size, with no clinical side effects. In conclusion, results of this study suggest a possible phytotherapeutic approach for caraway extract in the management of obesity. This trial is registered withNCT01833377.


Sign in / Sign up

Export Citation Format

Share Document