Table 2 Characteristics of the stretching interventions
Study | Stretching duration (bout) (s) | Number of exercises | Number of sets | Frequency per week | Daily stretch in a week (s) | Weekly load (s) | Study duration (weeks) | Total stretching duration | Stretching intensity |
|---|---|---|---|---|---|---|---|---|---|
Akagi and Takahashi [42] | 120 | 1 | 3 | 6 | 360 | 2160 | 5 | 10,800 | Without suffering discomfort or pain |
Andrade et al. [9] | 45 | 2 | 5 | 5 | 450 | 2250 | 12 | 27,000 | Max, onset of pain |
Blazevich et al. [24] | 30 | 1 | 8 | 7 | 240 | 1680 | 3 | 5400 | Within the limit of pain |
Brusco et al. [41] | 60 | 1 | 8 | 2 | 480 | 960 | 6 | 5760 | Max-tolerable |
Freitas and Mil-Homens [23] | 90 | 1 | 5 | 5 | 450 | 2250 | 8 | 18,000 | POD |
Kay et al. [21] | 36 | 1 | 5 | 2 | 180 | 360 | 6 | 2160 | POD |
Konrad and Tilp [26] | 30 | 1 | 4 | 5 | 120 | 600 | 6 | 3600 | POD |
Lima et al. [43] | 30 | 1 | 3 | 3 | 90 | 270 | 8 | 2160 | Preceding pain threshold |
Longo et al. [16] | 45 | 2 | 5 | 5 | 450 | 2250 | 12 | 27,000 | POD |
Mizuno [20] | 30 | 1 | 4 | 3 | 120 | 360 | 8 | 2880 | Without feeling pain |
Moltubakk et al. [17] | 60 | 4 | 4 | 7 | 240 | 1680 | 24 | 40,320 | Without pain |
Nakamura et al. [22] | 60 | 1 | 3 | 3 | 180 | 540 | 4 | 2160 | Between 6–7 |
60 | 1 | 3 | 3 | 180 | 540 | 4 | 2160 | Greatest tolerated dorsiflexion with no or little pain | |
Nakamura et al. [25] | 60 | 1 | 2 | 7 | 120 | 840 | 4 | 3360 | POD |
Panidi et al. [15] | 78.75 | 6 | 2 | 5 | 945 | 4725 | 12 | 56,700 | POD |
Peixinho et al. [37] | 30 | 2 | 2 | 4 | 120 | 480 | 10 | 4800 | Tolerable discomfort |
Åžekir et al. [44] | 30 | 1 | 4 | 5 | 120 | 600 | 6 | 3600 | Mild discomfort |
30 | 2 | 4 | 5 | 240 | 1200 | 6 | 7200 | Â | |
Simpson et al. [14] | 180 | 1 | 1 | 5 | 180 | 900 | 6 | 5400 | Mild discomfort |
Warneke et al. [45] | 3600 | 1 | 1 | 7 | 3600 | 25,200 | 6 | 151,200 | POD with an orthosis |
Yahata et al. [18] | 300 | 1 | 6 | 2 | 1800 | 3600 | 5 | 18,000 | 20% maximum voluntary contraction |