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Table 2 Result of the quality assessment using the Assessing the Methodological Quality of Systematic Reviews 2 (AMSTAR 2) checklist

From: Effects of sodium bicarbonate supplementation on exercise performance: an umbrella review

Reference

AMSTAR 2 items

Score

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Carr et al. [13]

Yes

No

Yes

Yes

Yes

Yes

No

Yes

No

No

Yes

n/a

n/a

Yes

Yes

Yes

63%

MQ

Christensen et al. [14]

Yes

No

Yes

Yes

Yes

Unclear

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

75%

MQ

Grgic [15]

Yes

No

Yes

Yes

No

No

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

69%

MQ

Grgic et al. [16]

Yes

No

Yes

Yes

Yes

Yes

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

81%

HQ

Grgic et al. [17]

Yes

No

Yes

Yes

Yes

Yes

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

81%

HQ

Lopes-Silva et al. [18]

Yes

No

Yes

Yes

Yes

Unclear

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

75%

MQ

Lopes-Silva et al. [19]

Yes

No

Yes

Yes

Yes

Unclear

No

Yes

Yes

No

Yes

Yes

Yes

Yes

No

Yes

69%

MQ

Turnes et al. [20]

Yes

No

Yes

Yes

Unclear

Unclear

No

Yes

No

No

Yes

n/a

n/a

Yes

Yes

Yes

50%

MQ

  1. MQ: moderate quality; HQ: high quality