JMIR Publications

ABSTRACT

Background:

The potential role of fruit and vegetable enzymes might have positive effect in modulating fatigue in elderly population after extremely low-volume high-intensity interval exercise (ELVHIIE) though ex-ergaming

Objective:

We aimed to investigate the impact of a 14-day supplementation with fruit and vegetable enzymes on aerobic capacity and blood lactate response in elderly individuals following ELVHIIE through exer-gaming.

Methods:

Sixteen female elderly participants were recruited in this study (Pairwise Grouping Based on Lactate Levels into an enzyme group and a placebo group). Participants engaged in exergaming using Ninten-do Switch Ring Fit Adventure, which involved ELVHIIE comprising 8 sets of 20 seconds of maximal effort exercise with 30 seconds of rest between sets, resulting in a total exercise duration of 380 seconds. Blood lactate levels, heart rate, rating of perceived exertion, and training impulse (TRIMP) were as-sessed. The enzyme group received fruit and vegetable enzyme supplementation twice daily (30 c.c.) for 14 days.

Results:

The enzyme group exhibited significantly lower blood lactate levels compared to the placebo group. Specifically, after the 4th and 8th exercise sessions, the enzyme group had lower lactate levels, respec-tively. Moreover, at 5- and 10-minutes post-exercise, the enzyme group also demonstrated lower lactate lev-els, respectively. Both groups exceeded 85% of their estimated maximum heart rate during exercise.

Conclusions:

Supplementation with fruit and vegetable enzymes significantly reduced blood lactate levels, suggest-ing a potential role in modulating lactate production or clearance during and after exercise. Clinical Trial: National Cheng Kung University Human Research Ethics committee, Taiwan (ID: 112-419).