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Table 1 Synthesis of the tested mathematical models with ideal percentage for intensity-level, mean and standard deviation for residuals analysis.

From: Intensity level for exercise training in fibromyalgia by using mathematical models

Model

Result of Estimation

Mean

SD

1

HRAT = HRB + 60.60% (HRMax achieved - HRB)

-4.393E-02

10.02*

2

HRAT = HRB + 53.04% (HRMaxa - HRB)

0.2675

13.35

3

HRAT = 80.90% HRMax achieved

0.2141611

11.19

4

HRAT = 76.20% HRMaxa

0.1594360

11.04

5

HRAT = HRB + 52.19% (HRMaxb - HRB)

3.015E-02

12.98

6

HRAT = 75.50% HRMaxb

7.760E-02

13.98

  1. HRAT = heart rate at aerobic threshold, HRB = basal heart rate, HRMax = maximum heart rate, HRMaxa = (220 - age); HRMaxb = (208 - 0.7 Ă— age). *Lower SD indicates better model. The sequence of better models were 1>3>5>2>6>4.