High-protein diet with immediate post-exercise protein drink: Impact on appetite in middle-aged obesity.
Study Goal
The researchers aimed to determine whether a high-protein diet, including post-exercise high-protein drinks, could reduce appetite and promote weight loss in obese middle-aged individuals.
Results Summary
The high-protein diet combined with post-exercise protein intake reduced post-exercise appetite and late-night snacking frequency, leading to a modest decrease in BMI. However, appetite increased after exercise in both intervention groups, and the study did not fully mitigate cravings.
Population
Obese middle-aged individuals (mean age 58.2 ± 4.11 years).
Effective Dosage
Daily protein intake of 1.6g/kg, with a high-protein drink consumed immediately after HIIT.
Duration
3 months.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
high-protein diet including a high-protein drink consumed immediately after high-intensity interval training (HIIT) | decrease | body mass index | obese middle-aged individuals | from 27.4 ± 4.28 to 26.8 ± 4.09 kg/m2 | experienced a decrease | #1 |
high-intensity interval training (HIIT) | increase | appetite after exercise | obese middle-aged individuals | p values for the three phases ranged from 0.04 to 0.001 | significantly increased | #2 |
high-intensity interval training (HIIT) combined with high-protein diet | increase | appetite after exercise | obese middle-aged individuals | p values for the three phases ranged from 0.042 to 0.003 | significantly increased | #3 |
high-intensity interval training (HIIT) | increase | desire to eat after exercise | obese middle-aged individuals | phase 1: p = 0.026; phase 2: p = 0.011; phase 3: p = 0.003 | significantly increased | #4 |
high-intensity interval training (HIIT) combined with high-protein diet | no change | desire to eat after exercise | obese middle-aged individuals | - | not in the ED group | #5 |
high-protein diet including a high-protein drink consumed immediately after high-intensity interval training (HIIT) | decrease | frequency of late-night snacking | obese middle-aged individuals | the score changed from 2.4 ± 0.86 to 2.7 ± 0.80 | decreased | #6 |
high-intensity interval training (HIIT) | increase | pre-dinner appetite score | obese middle-aged individuals | p = 0.063 | tended to have a higher | #7 |
high daily protein intake, combined with the consumption of high-protein drinks after exercise | decrease | post-exercise appetite | obese middle-aged individuals | - | resulted in reduced | #8 |
high daily protein intake, combined with the consumption of high-protein drinks after exercise | decrease | frequency of late-night snacking | obese middle-aged individuals | - | resulted in a decrease | #9 |
Successful management of obesity can be challenging if individuals constantly experience cravings. The present study investigated the effects of a high-protein diet, including a high-protein drink consumed immediately after high-intensity interval training (HIIT), on appetite and weight loss in obese middle-aged individuals. A total of 52 obese middle-aged individuals (58.2 ± 4.11 years old) were randomly assigned to one of three groups: the exercise group (E, n=19), exercise and high-protein diet group (ED, n=21), and a control group (n=12). The E and ED groups engaged in cycling HIIT (comprising 90 % of peak heart rate (HRpeak) for 3 min, followed by 70 % of HRpeak for 3 min, for a total of 5 cycles) three times a week for 3 months. The ED group consumed a high-protein drink immediately after HIIT and had a daily protein intake of 1.6g/kg. Body composition and eating behavior were assessed before and after the intervention. Additionally, appetite levels were measured before and after each exercise session, before dinner, and before bedtime during three phases of the intervention: the first phase (weeks 3-4), the second phase (weeks 5-8), and the third phase (weeks 9-12). Results showed that only the ED group experienced a decrease in body mass index (from 27.4 ± 4.28 to 26.8 ± 4.09 kg/m2, p=0.04). Appetite significantly increased after exercise in both E and ED groups (p values for the three phases ranged from 0.04 to 0.001 for the E group and from 0.042 to 0.003 for the ED group). The desire to eat significantly increased after exercise in the E group (phase 1: p = 0.026; phase 2: p = 0.011; phase 3: p = 0.003), but not in the ED group. Furthermore, the frequency of late-night snacking decreased in the ED group (the score changed from 2.4 ± 0.86 to 2.7 ± 0.80, p = 0.034). Notably, the E group tended to have a higher pre-dinner appetite score than the ED group in the third phase (p = 0.063). In summary, a high daily protein intake, combined with the consumption of high-protein drinks after exercise, resulted in reduced post-exercise appetite and a decrease in the frequency of late-night snacking.