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Table 2 Estimated change relative to baseline (with associated 95% confidence intervals and p-values)

From: Cardiorespiratory fitness and accelerometer-determined physical activity following one year of free-living high-intensity interval training and moderate-intensity continuous training: a randomized trial

 HIITP-valueMICTP-valueBetween group differencesP-value
VO2 absolute (L/min)Month 60.15 (0.06, 0.24)0.0020.12 (0.05, 0.20)0.0010.03 (−0.09, 0.14)0.66
Month 120.16 (0.08, 0.23)< 0.0010.10 (0.02, 0.17)0.0140.06 (−0.04, 0.17)0.25
Average of the 12 months0.15 (0.08, 0.23)< 0.0010.11 (0.05, 0.18)0.0010.04 (−0.06, 0.14)0.38
VO2 relative (mL/kg/min)Month 61.79 (0.68, 2.90)0.0021.79 (0.75, 2.83)0.0010.00 (−1.52, 1.52)1.00
Month 121.94 (0.88, 2.99)< 0.0011.52 (0.50, 2.54)0.0040.42 (−1.05, 1.88)0.57
Average of the 12 months1.86 (0.87, 2.85)< 0.0011.66 (0.69, 2.62)0.0010.21 (−1.17, 1.59)0.76
Watts peakMonth 69.51 (3.83, 15.19)0.0018.12 (3.86, 12.38)< 0.0011.39 (−5.71, 8.48)0.70
Month 1211.26 (6.53, 15.99)< 0.0014.97 (0.25, 9.70)0.046.28 (−0.40, 12.97)0.07
Average of the 12 months10.38 (5.75, 15.02)< 0.0016.55 (2.37, 10.73)0.0033.83 (−2.40, 10.07)0.22
MVPA 10+Month 349.39 (30.15, 68.64)< 0.00184.03 (53.00, 115.07)< 0.001−34.64 (−71.16, 1.88)0.06
Month 629.36 (9.24, 49.48)0.00491.66 (63.91, 119.40)< 0.001−62.30 (−96.57, −28.03)< 0.001
Month 939.80 (16.02, 63.57)0.00154.45 (25.92, 82.98)< 0.001−14.65 (−51.79, 22.49)0.44
Month 1224.17 (−7.49, 55.83)0.1344.26 (19.16, 69.37)< 0.001−20.09 (−60.50, 20.31)0.33
Average of the 12 months35.68 (17.22, 54.14)< 0.00168.60 (48.66, 88.54)< 0.001−32.92 (− 60.09, − 5.75)0.02
Vigorous PAMonth 36.24 (2.09, 18.58)0.0012.09 (0.80, 5.42)0.132.99 (0.70, 12.73)0.14
Month 63.60 (1.21, 10.72)0.0213.47 (1.24, 9.72)0.0181.04 (0.23, 4.66)0.96
Month 96.70 (2.19, 20.50)< 0.0012.88 (1.05, 7.89)0.0402.33 (0.52, 10.51)0.27
Month 123.35 (1.06, 10.62)0.0402.02 (0.69, 5.89)0.201.66 (0.34, 8.01)0.53
Average of the 12 months4.74 (1.93, 11.67)< 0.0012.55 (1.16, 5.58)0.0201.86 (0.56, 6.15)0.307
Moderate PAMonth 358.54 (34.77, 82.32)< 0.00179.52 (39.63, 119.40)< 0.001−20.97 (−67.40, 25.46)0.37
Month 617.13 (−6.67, 40.92)0.1693.71 (60.45, 126.97)< 0.001−76.58 (− 117.48, −35.69)< 0.001
Month 919.00 (−6.50, 44.50)0.1467.61 (38.51, 96.71)< 0.001−48.61 (−87.30, −9.92)0.014
Month 12−7.70 (−41.10, 25.70)0.6549.13 (13.38, 84.88)0.007−56.83 (− 105.76, − 7.91)0.023
Average of the 12 months21.74 (2.05, 41.44)0.03172.49 (48.66, 96.32)< 0.001−50.75 (−81.67, − 19.83)0.001
Moderate-to-vigorous PAMonth 368.47 (45.32, 91.63)< 0.00186.36 (43.94, 128.78)< 0.001−17.88 (−66.21, 30.44)0.47
Month 624.39 (0.45, 48.33)0.04698.98 (65.49, 132.46)< 0.001−74.59 (− 115.75, − 33.43)< 0.001
Month 926.31 (0.03, 52.58)0.05072.79 (41.86, 103.71)< 0.001−46.48 (−87.06, −5.90)0.025
Month 12−2.24 (−35.82, 31.33)0.9061.61 (24.24, 98.99)0.001−63.86 (− 114.10, − 13.62)0.013
Average of the 12 months29.23 (9.68, 48.78)0.00479.93 (55.44, 104.42)< 0.001−50.70 (−82.04, − 19.37)0.002
Propotion of MVPA prescription achievedMonth 30.39 (0.25, 0.52)< 0.0010.35 (0.21, 0.48)< 0.0010.04 (−0.15, 0.23)0.69
Month 60.22 (0.08, 0.35)0.0020.39 (0.28, 0.50)< 0.001−0.18 (− 0.35, − 0.00)0.05
Month 90.27 (0.09, 0.45)0.0030.25 (0.13, 0.36)< 0.0010.02 (−0.19, 0.23)0.83
Month 120.13 (−0.06, 0.32)0.190.19 (0.08, 0.29)< 0.001−0.06 (− 0.28, 0.16)0.61
Average of the 12 months0.25 (0.11, 0.39)< 0.0010.29 (0.21, 0.38)< 0.001−0.04 (− 0.20, 0.12)0.59
Weight (kg)Month 6−0.26 (−1.10, 0.58)0.54−1.28 (−3.32, 0.77)0.221.02 (−1.19, 3.23)0.36
Month 120.00 (−1.32, 1.31)1.00−1.48 (−3.92, 0.97)0.231.48 (−1.30, 4.25)0.29
Average of the 12 months−0.13 (−1.09, 0.82)0.78−1.38 (−3.57, 0.81)0.211.25 (−1.14, 3.64)0.30
Waist circumference (cm)Month 6−1.89 (−3.14, −0.65)0.003−3.62 (−5.84, − 1.39)0.0021.72 (− 0.82, 4.27)0.18
Month 12−2.62 (−4.24, − 1.01)0.002−4.95 (−7.41, − 2.49)< 0.0012.32 (− 0.62, 5.26)0.12
Average of the 12 months− 2.26 (− 3.55, − 0.97)< 0.001−4.28 (−6.54, − 2.02)< 0.0012.02 (− 0.58, 4.63)0.13
Body fat (%)Month 6− 0.98 (− 1.55, − 0.41)0.001−0.93 (− 1.80, − 0.07)0.04−0.05 (− 1.09, 0.99)0.93
Month 12−1.68 (− 2.47, − 0.90)< 0.001−1.90 (− 2.88, − 0.92)< 0.0010.22 (− 1.04, 1.47)0.73
Average of the 12 months− 1.33 (− 1.94, − 0.73)< 0.001− 1.42 (− 2.27, − 0.56)0.0020.08 (− 0.96, 1.13)0.87
Task self-efficacyMonth 612.50 (6.60, 18.40)< 0.0017.50 (3.07, 11.93)0.0015.00 (−2.38, 12.38)0.18
Month 1210.00 (2.87, 17.13)0.0075.00 (−2.81, 12.81)0.215.00 (−5.58, 15.58)0.35
Self-regulatory efficacyMonth 61.43 (− 4.62, 7.47)0.643.57 (−1.45, 8.59)0.16−2.14 (− 10.00, 5.72)0.59
Month 12−1.43 (− 12.39, 9.53)0.802.86 (− 4.08, 9.80)0.42−4.29 (− 17.26, 8.69)0.51
  1. All values are estimated change (95% CI)
  2. Number of participants in HIIT: 3-months (n = 43); 6-months (n = 42); 9-months (n = 37); 12-months (n = 35)
  3. Number of participants in MICT: 3-months (n = 49); 6-months (n = 44); 9-months (n = 39); 12 months (n = 37)