TY  - JOUR
AU  - Lin, Shu-Cheng
AU  - Wang, Chien-Yen
AU  - Hou, Tien-Hung
AU  - Chen, Hong-Ching
AU  - Wang, Chia-Chi
PY  - 2024
DA  - 2024/6/25
TI  - Impact of Fruit and Vegetable Enzyme Supplementation on Aerobic Performance and Lactate Response in Older Adults Following High-Intensity Interval Exercise Through Exergaming: Randomized Experimental Matched-Pair Study
JO  - JMIR Serious Games
SP  - e52231
VL  - 12
KW  - Ring Fit Adventure
KW  - training load
KW  - older adult training
KW  - training impulse
KW  - food supplement
KW  - older adults
KW  - exergames
KW  - exergame
KW  - Taiwan
KW  - female
KW  - fruits
KW  - vegetables
KW  - blood lactate
KW  - exercise
KW  - feasibility
KW  - aerobic
KW  - enzymes
KW  - enzyme
KW  - female older adults
KW  - fitness
KW  - food intake
KW  - diet
KW  - exergaming
KW  - enzyme supplements
KW  - older adults training
KW  - female older adult
KW  - older adult
AB  - Background: Exercise offers substantial health benefits but can induce oxidative stress and inflammation, especially in high-intensity formats such as high-intensity interval exercise (HIIE). Exergaming has become an effective, enjoyable fitness tool for all ages, particularly older adults. Enzyme supplements may enhance exercise performance by improving lactate metabolism and reducing oxidative stress. Objective: This study investigates the efficacy of fruit and vegetable enzyme supplementation in modulating fatigue and enhancing aerobic capacity in older adults following HIIE through exergaming. Methods: The study recruited 16 older adult female participants and allocated them into 2 distinct groups (enzyme and placebo) based on their pretest lactate levels. This division used pairwise grouping to guarantee comparability between the groups, ensuring the integrity of the results. They engaged in HIIE using Nintendo Switch Ring Fit Adventure, performing 8 sets of 20 seconds of maximum effort exercise interspersed with 30 seconds of rest, totaling 370 seconds of exercise. Key metrics assessed included blood lactate levels, heart rate, rating of perceived exertion, and training impulse. Participants in the enzyme group were administered a fruit and vegetable enzyme supplement at a dosage of 30 mL twice daily over a period of 14 days. Results: The enzyme group showed significantly lower blood lactate levels compared to the placebo group, notably after the fourth (mean 4.29, SD 0.67 vs mean 6.34, SD 1.17 mmol/L; P=.001) and eighth (mean 5.84, SD 0.63 vs mean 8.20, SD 1.15 mmol/L; P<.001) exercise sessions. This trend continued at 5 minutes (mean 6.85, SD 0.82 vs mean 8.60, SD 1.13 mmol/L; P=.003) and 10 minutes (mean 5.91, SD 1.16 vs mean 8.21, SD 1.27 mmol/L; P=.002) after exercise. Although both groups exceeded 85% of their estimated maximum heart rate during the exercise, enzyme supplementation did not markedly affect the perceived intensity or effort. Conclusions: The study indicates that fruit and vegetable enzyme supplementation can significantly reduce blood lactate levels in older adults following HIIE through exergaming. This suggests a potential role for these enzymes in modulating lactate production or clearance during and after high-intensity exercise. These findings have implications for developing targeted interventions to enhance exercise tolerance and recovery in older adults. Trial Registration: ClinicalTrials.gov NCT06466408; https://clinicaltrials.gov/study/NCT06466408 
SN  - 2291-9279
UR  - https://games.jmir.org/2024/1/e52231
UR  - https://doi.org/10.2196/52231
DO  - 10.2196/52231
ID  - info:doi/10.2196/52231
ER  -