scholarly journals The Effects of Whey vs. Pea Protein on Physical Adaptations Following 8-Weeks of High-Intensity Functional Training (HIFT): A Pilot Study

Sports ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 12 ◽  
Author(s):  
Amy Banaszek ◽  
Jeremy R. Townsend ◽  
David Bender ◽  
William C. Vantrease ◽  
Autumn C. Marshall ◽  
...  
Keyword(s):  
Body Composition ◽  
High Intensity ◽  
Muscle Thickness ◽  
Bioelectrical Impedance ◽  
Thickness Measurement ◽  
Protein Supplementation ◽  
Measured Variable ◽  
Pea Protein ◽  
Functional Training ◽  
Before And After

This study examined the effects of whey and pea protein supplementation on physiological adaptations following 8-weeks of high-intensity functional training (HIFT). Fifteen HIFT men (n = 8; 38.6 ± 12.7 y, 1.8 ± 0.1 m, 87.7 ± 15.8 kg) and women (n = 7; 38.9 ± 10.9 y, 1.7 ± 0.10 m, 73.3 ± 10.5 kg) participated in this study. Participants completed an 8-week HIFT program consisting of 4 training sessions per week. Participants consumed 24 g of either whey (n = 8) or pea (n = 7) protein before and after exercise on training days, and in-between meals on non-training days. Before and after training, participants underwent ultrasonography muscle thickness measurement, bioelectrical impedance analysis (BIA), two benchmark WODs (workout of the day), 1-Repetition Maximum (1RM) squat and deadlift testing, and Isometric Mid-thigh Pull (IMTP) performance. Separate analyses of covariance (ANCOVA) were performed on all measures collected at POST. Both groups experienced increased strength for 1RM back squat (p = 0.006) and deadlift (p = 0.008). No training effect (p > 0.05) was found for body composition, muscle thickness, IMTP peak force, IMTP rate of force development, or performance in either WOD. Using PRE values as the covariate, there were no group differences for any measured variable. We conclude that ingestion of whey and pea protein produce similar outcomes in measurements of body composition, muscle thickness, force production, WOD performance and strength following 8-weeks of HIFT.

scholarly journals Energy balance dynamics during short-term high-intensity functional training

2019 ◽  
Vol 44 (2) ◽  
pp. 172-178 ◽  
Author(s):  
Matthew M. Schubert ◽  
Elyse A. Palumbo
Keyword(s):  
Body Composition ◽  
Energy Balance ◽  
Energy Expenditure ◽  
Energy Intake ◽  
High Intensity ◽  
Energy Deficit ◽  
Air Displacement Plethysmography ◽  
Functional Training ◽  
Before And After ◽  
Activity Energy

CrossFit (CF; CrossFit Inc., Washington, DC, USA) is a form of high-intensity functional training that focuses on training across the entire spectrum of physical fitness. CF has been shown to improve a number of indicators of health but little information assessing energy balance exists. The purpose of the present study was to investigate energy balance during 1 week of CF training. Men and women (n = 21; mean ± SD; age, 43.5 ± 8.4 years; body mass index, 27.8 ± 4.9 kg·m−2), with ≥3 months CF experience, had body composition assessed via air displacement plethysmography before and after 1 week of CF training. Participants wore ActiHeart monitors to assess total energy expenditure (TEE), activity energy expenditure, and CF energy expenditure (CF EE). Energy intake was assessed from TEE and Δ body composition. CF EE averaged 605 ± 219 kcal per 72 ± 10 min session. Weekly CF EE was 2723 ± 986 kcal. Participants were in an energy deficit (TEE: 3674 ± 855 kcal·day−1; energy intake: 3167 ± 1401 kcal·day−1). Results of the present study indicate that CF training can account for a significant portion of daily activity energy expenditure. The weekly expenditure is within levels shown to induce clinically meaningful weight loss in overweight/obese populations.

Sensitivity of bioelectrical impedance to detect changes in human body composition

1989 ◽  
Vol 67 (4) ◽  
pp. 1643-1648 ◽  
Author(s):  
R. Ross ◽  
L. Leger ◽  
P. Martin ◽  
R. Roy
Keyword(s):  
Body Composition ◽  
Human Body ◽  
Correlation Coefficients ◽  
Bioelectrical Impedance ◽  
Mean Values ◽  
Significance Level ◽  
Exercise Regimen ◽  
Before And After ◽  
Hydrostatic Weighing ◽  
Human Body Composition

The purpose of this study was to compare the estimates of lean body mass (LBM) and percent body fat (%BF), as predicted by bioelectrical impedance (BIA) and sum of skinfolds (SF), with those derived by hydrostatic weighing (HW) obtained before and after a 10-wk diet and exercise regimen. The experimental (E) group consisted of 17 healthy male subjects; 20 healthy males served as the control (C) group. Post hoc Scheffe contrasts computed on E group data indicated that, for both LBM and %BF, the Lukaski and Segal BIA equations, as well as the Durnin SF equation, derived mean values that were not significantly different (0.05 significance level) from HW in both pre- and postregimen conditions. For LBM, the same equations derived the following significant (P less than 0.01) correlation coefficients for both pre- and postregimen data: Lukaski, 0.87 and 0.85; Segal, 0.89 and 0.87; and Durnin, 0.90 and 0.88. For %BF, the correlation coefficients were slightly lower but remained statistically significant (P less than 0.01). The findings of this study suggest that the BIA method, by use of either the Lukaski or Segal prediction equations, is a valid means of predicting changes in human body composition as measured by the Siri transformation of body density.

scholarly journals Body Composition And Anaerobic Capacity In High Intensity Functional Training Athletes

2021 ◽  
Vol 53 (8S) ◽  
pp. 32-32
Author(s):  
Tomás Ponce-García ◽  
José Ramón Alvero-Cruz ◽  
Jerónimo García-Romero ◽  
Javier Benítez-Porres
Keyword(s):  
Body Composition ◽  
High Intensity ◽  
Anaerobic Capacity ◽  
Functional Training

scholarly journals Effects of Eight Weeks of High Intensity Functional Training on Glucose Control and Body Composition among Overweight and Obese Adults

Sports ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 51 ◽  
Author(s):  
Yuri Feito ◽  
Pratik Patel ◽  
Andrea Sal Redondo ◽  
Katie Heinrich
Keyword(s):  
Body Composition ◽  
Blood Glucose ◽  
Glucose Control ◽  
High Intensity ◽  
Fasting Blood Glucose ◽  
Future Research ◽  
Oral Glucose ◽  
Fat Percentage ◽  
Functional Training ◽  
Training Modalities

High-intensity exercise has been found to positively influence glucose control, however, the effects of high-intensity functional training (HIFT) for overweight and obese sedentary adults without diabetes is unknown. The purpose of this study was to examine changes in body composition and glucose control from eight weeks of aerobic and resistance training (A-RT) compared to HIFT. Session time spent doing daily workouts was recorded for each group. Baseline and posttest measures included height, weight, waist circumference, dual X-ray absorptiometry (body fat percentage, fat mass, lean mass), and fasting blood glucose. Participants completing the intervention (78%, n = 9 per group) were 67% female, age = 26.8 ± 5.5 years, and had body mass index = 30.5 ± 2.9 kg/m2. Fasting blood glucose and 2-h oral glucose tolerance tests were used as primary outcome variables. On average, the HIFT group spent significantly less time completing workouts per day and week (ps < 0.001). No significant differences were found for body composition or glucose variables within- or between-groups. Even though our findings did not provide significant differences between groups, future research may utilize the effect sizes from our study to conduct fully-powered trials comparing HIFT with other more traditional training modalities.

scholarly journals Protein Supplementation to Augment the Effects of High Intensity Resistance Training in Untrained Middle-Aged Males: The Randomized Controlled PUSH Trial

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Andreas Wittke ◽  
Simon von Stengel ◽  
Michael Hettchen ◽  
Michael Fröhlich ◽  
Jürgen Giessing ◽  
...  
Keyword(s):  
Body Composition ◽  
Resistance Exercise ◽  
Body Mass ◽  
High Intensity ◽  
Training Stimulus ◽  
Protein Supplementation ◽  
Study Endpoint ◽  
Primary Study ◽  
Middle Aged ◽  
Single Set

High intensity (resistance exercise) training (HIT) defined as a “single set resistance exercise to muscular failure” is an efficient exercise method that allows people with low time budgets to realize an adequate training stimulus. Although there is an ongoing discussion, recent meta-analysis suggests the significant superiority of multiple set (MST) methods for body composition and strength parameters. The aim of this study is to determine whether additional protein supplementation may increase the effect of a HIT-protocol on body composition and strength to an equal MST-level. One hundred and twenty untrained males 30–50 years old were randomly allocated to three groups: (a) HIT, (b) HIT and protein supplementation (HIT&P), and (c) waiting-control (CG) and (after cross-over) high volume/high-intensity-training (HVHIT). HIT was defined as “single set to failure protocol” while HVHIT consistently applied two equal sets. Protein supplementation provided an overall intake of 1.5–1.7 g/kg/d/body mass. Primary study endpoint was lean body mass (LBM). LBM significantly improved in all exercise groups (p≤0.043); however only HIT&P and HVHIT differ significantly from control (p≤0.002). HIT diverges significantly from HIT&P (p=0.017) and nonsignificantly from HVHIT (p=0.059), while no differences were observed for HIT&P versus HVHIT (p=0.691). In conclusion, moderate to high protein supplementation significantly increases the effects of a HIT-protocol on LBM in middle-aged untrained males.

Comparison of Body Composition Methods During Weight Loss in Obese Women Using Herbal Formula

2005 ◽  
Vol 33 (06) ◽  
pp. 851-858 ◽  
Author(s):  
Ho-Jun Kim ◽  
Dympna Gallagher ◽  
Mi-Yeon Song
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Intervention Program ◽  
Low Cost ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Obese Women ◽  
Before And After ◽  
Total Body

Bioelectrical impedance analysis (BIA), a device that analyzes the current conduction differences between the fat and water components is widely used for reasons that include convenience of use, non-invasiveness, safety, and low cost. Dual energy X-ray absorptiometry (DXA) allows for the assessment of total body and regional lean and fat tissues and bone mineral content (BMC). The objective of this study was to compare body composition assessments by BIA and DXA before and after a 6-week herbal diet intervention program in 50 pre-menopausal women [mean ± SD: age 30.58 ± 6.15, body mass index (BMI) 31.72 ± 3.78]. Waist-to-hip ratio (WHR) was measured by BIA and anthropometry. Lean body mass (LBM), body fat (BF), BMC and percent body fat (%BF) were measured by BIA and DXA. Highly significant correlations were observed between BIA and DXA measurements for LBM, BF, BMC and %BF (r = 0.73, 0.93, 0.53, 0.79, respectively) before the intervention. Differences between BIA and DXA measurements were observed in LBM, BF, %BF and BMC before intervention ( p < 0.01) where WHR by BIA was significantly higher compared to anthropometry before ( p < 0.01) and after the intervention ( p < 0.01). BIA underestimated LBM by 1.85 kg and overestimated BF by 2.54 kg compared to DXA before the intervention. Although BIA and DXA showed highly significant correlations for LBM, BF, BMC and %BF before the intervention, they did not produce statistically comparable results in pre-menopausal Korean women and therefore should not be used interchangeably when measuring body composition.

scholarly journals Comparison of Body Composition Assessment Methods in Patients with Human Immunodeficiency Virus-Associated Wasting Receiving Growth Hormone

2006 ◽  
Vol 91 (8) ◽  
pp. 2952-2959 ◽  
Author(s):  
John G. Esposito ◽  
Scott G. Thomas ◽  
Lori Kingdon ◽  
Shereen Ezzat
Keyword(s):  
Body Composition ◽  
Bioelectrical Impedance ◽  
Community Dwelling ◽  
Fat Free Mass ◽  
Daily Injection ◽  
Crossover Fashion ◽  
Treatment Change ◽  
Body Composition Assessment ◽  
Before And After ◽  
Rhgh Treatment

Abstract Context: Bioelectrical impedance spectroscopy (BIS) and skinfold anthropometry (SKF) have been used to monitor body composition among patients with HIV wasting; however, validation of these techniques during recombinant human GH (rhGH) treatment has not been performed. Objective: Our objective was to evaluate the degree of agreement between criterion measurements of dual-energy x-ray absorptiometry (DXA) and those of BIS and SKF in patients with HIV wasting treated with rhGH. Design and Setting: We conducted a randomized, double-blinded, placebo-controlled, two-period crossover trial at the University of Toronto and Mount Sinai Hospital (Toronto, Canada). Patients: A referred sample of 27 community-dwelling men with HIV-associated weight loss (≥10% over preceding 12 months) despite optimal antiretroviral therapy participated in the study. Intervention: Intervention was one daily injection of rhGH (6 mg) or placebo self-administered for 3 months in a crossover fashion with a 3-month washout. Main Outcome Measures: Fat-free mass (FFM) and fat mass (FM) were measured by BIS, SKF, and DXA before and after rhGH and placebo treatment. Results: FFMBIS was not significantly different from FFMDXA after rhGH treatment (P = 0.10). Mean differences (bias ± sd) according to Bland-Altman analysis were smaller for SKF than for BIS (P &lt; 0.05) at all time points, yet treatment-induced change in FM was better detected with BIS than with SKF. BIS estimates of FFM and FM showed better agreement with those of DXA after rhGH treatment (1.6 ± 4.6 kg and −2.1 ± 3.9 kg) compared with baseline (3.8 ± 3.5 kg and −4.1 ± 3.6 kg) and placebo (2.7 ± 4.4 kg and −3.1 ± 4.6) (P &lt; 0.05). BIS overestimated and SKF underestimated the treatment-induced changes in FFM and FM. Conclusions: SKF was more accurate than BIS when measuring body composition in patients with HIV wasting before and after rhGH treatment; nonetheless, the accuracy of BIS increased after treatment. Change in FM because of treatment was not accurately assessed with SKF.

scholarly journals Effects of High Intensity Exercise on Body Composition Measured by Bioelectrical Impedance Analysis

2020 ◽  
Vol 55 (2) ◽  
pp. 102-111
Author(s):  
Tahir Hazir ◽  
◽  
Mehmet Goren Kose ◽  
Ferhat Esatbeyoglu ◽  
Yunus Emre Ekinci ◽  
...  
Keyword(s):  
Body Composition ◽  
High Intensity ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
High Intensity Exercise
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