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Table 2 Summary of the findings from the studies assessing perceived/general health status

From: Health outcomes associated with reallocations of time between sleep, sedentary behaviour, and physical activity: a systematic scoping review of isotemporal substitution studies

Study

Sample and study design

Measures of sleep, SB, LPA, MVPA

Outcome measures

Data analysis method/reallocated time

Adjustments for confounding

Results

Balboa-Castillo et al. [45]

Older adults (n = 1097), Spain; prospective cohort

Sleep, SB, housework, leisure-time physical activity (LPA, MVPA) – self-report

HRQoL

Mekary et al. [12]/60 min

Age, sex, educational level, size of municipality of residence, consumption of tobacco, consumption of alcohol, self-reported diseases diagnosed by a physician, score on appropriate SF-36 scale in 2003, number of hours lying or sleeping, and total number of hours spent in all types of physical activity.

β (95% CI)

Physical functioning

SB ↔ LPA: 3.41 (0.81, 6.00)

SB ↔ MVPA: 4.14 (1.92, 6.37)

SB ↔ housework: 1.04 (0.25, 1.85)

Physical role

SB ↔ LPA: 10.61 (6.08, 15.13)

SB ↔ MVPA: 1.19 (− 2.71, 5.10)

SB ↔ housework: 1.68 (0.27, 3.01)

Bodily pain

SB ↔ LPA: 4.22 (1.19, 7.26)

SB ↔ MVPA: 2.93 (0.31, 5.56)

SB ↔ housework: 1.05 (0.10, 1.99)

General health

SB ↔ LPA: 2.44 (0.66, 4.23)

SB ↔ MVPA: − 0.06 (− 1.61, 1.50)

SB ↔ housework: 0.31 (− 0.24, 0.87)

Vitality

SB ↔ LPA: 4.14 (1.58, 6.71)

SB ↔ MVPA: 2.51 (0.29, 4.73)

SB ↔ housework: 0.67 (− 0.13, 1.47)

Social functioning

SB ↔ LPA: 4.80 (1.84, 7.77)

SB ↔ MVPA: 2.06 (− 0.47, 4.61)

SB ↔ housework: 1.08 (0.14, 2.00)

Emotional role

SB ↔ LPA: 4.93 (0.98, 8.87)

SB ↔ MVPA: 1.03 (− 2.40, 4.46)

SB ↔ housework: 1.21 (− 0.03, 2.45)

Mental health

SB ↔ LPA: 2.51 (0.17, 4.86)

SB ↔ MVPA: 0.53 (− 1.51, 2.57)

SB ↔ housework: 0.83 (0.09, 1.57)

Buman et al. [47]

Older adults (n = 862) from the 2005–2007 Senior Neighborhood Quality of Life Study, USA; prospective cohort

SB, MVPA (“high-light” physical activity and “low-light” physical activity) – waist-worn accelerometers; sleep – not assessed

Physical health and psychosocial well-being factors

Mekary et al. [12]/30 min

Age, sex, race, educational status, marital status, senior housing status, current smoking status and walkability index.

β (95% CI)

Physical health

SB → “low-light” physical activity: 0.07 (0.04, 0.09)

SB → “high-light” physical activity: 0.30 (0.19, 0.42)

SB → MVPA: 0.34 (0.23, 0.44)

“Low-light” physical activity → SB: − 0.07 (− 0.09, − 0.04)

“Low-light” physical activity → “high-light” physical activity: 0.24 (0.11, 0.36)

“Low-light” physical activity → MVPA: 0.21 (0.10, 0.32)

“High-light” physical activity → SB: − 0.30 (− 0.42, − 0.19)

“High-light” physical activity → “low-light” physical activity: − 0.24 (− 0.36, − 0.11)

“High-light” physical activity → MVPA: − 0.27 (− 0.55, 0.01)

MVPA → SB: − 0.17 (− 0.22, − 0.12)

MVPA → “low-light” physical activity: − 0.10 (− 0.16, − 0.05)

MVPA → “high-light” physical activity: 0.14 (− 0.06, 0.27)

Psychosocial well-being

SB → “low-light” physical activity: 0.01 (− 0.02, 0.04)

SB → “high-light” physical activity: 0.24 (0.12, 0.36)

SB → MVPA: − 0.02 (− 0.13, 0.10)

“Low-light” physical activity → SB: − 0.01 (− 0.04, 0.02)

“Low-light” physical activity → “high-light” physical activity: 0.24 (0.10, 0.37)

“Low-light” physical activity → MVPA: − 0.03 (− 0.15, 0.08)

“High-light” physical activity → SB: − 0.24 (− 0.36, − 0.12)

“High-light” physical activity → “low-light” physical activity: − 0.24 (− 0.37, − 0.10)

“High-light” physical activity → MVPA: − 0.50 (− 0.81, − 0.19)

MVPA → SB: 0.01 (− 0.05, 0.07)

MVPA → “low-light” physical activity: 0.02 (− 0.04, 0.08)

MVPA → “high-light” physical activity: 0.25 (0.10, 0.41)

Fanning et al. [26]

Low-active healthy older adults (n = 247), USA; cross-sectional

SB, LPA, MVPA – waist-worn accelerometers; sleep – self report

Self-regulation, spatial working memory, task-switching

Mekary et al. [12]/30 min

Age, sex, race.

β (standard error)

Self-regulation – total score

SB → LPA: 0.60 (0.38)

SB → MVPA: 1.81 (0.80)

SB → sleep: 1.29 (0.39)

Self-regulation – self-monitoring

SB → LPA: 0.15 (0.09)

SB → MVPA: 0.27 (0.19)

SB → sleep: 0.23 (0.09)

Self-regulation – goal setting

SB → LPA: 0.11 (0.08)

SB → MVPA: 0.27 (0.18)

SB → sleep: 0.32 (0.09)

Self-regulation – social support

SB → LPA: 0.09 (0.06)

SB → MVPA: 0.08 (0.13)

SB → sleep: 0.18 (0.07)

Spatial working memory – item 2 reaction time

SB → LPA: − 0.16 (6.20)

SB → MVPA: − 4.46 (13.09)

SB → sleep: 1.13 (6.50)

Spatial working memory – item 3 reaction time

SB → LPA: − 0.19 (6.18)

SB → MVPA: − 5.60 (13.06)

SB → sleep: − 1.11 (6.49)

Spatial working memory – item 4 reaction time

SB → LPA: − 5.87 (6.57)

SB → MVPA: − 4.61 (13.88)

SB → sleep: − 0.21 (6.89)

Spatial working memory – item 2 accuracy

SB → LPA: − 0.01 (0.00)

SB → MVPA: 0.03 (0.01)

SB → sleep: − 0.00 (0.01)

Spatial working memory – item 3 accuracy

SB → LPA: − 0.01 (0.01)

SB → MVPA: 0.02 (0.01)

SB → sleep: − 0.00 (0.01)

Spatial working memory – item 4 accuracy

SB → LPA: − 0.00 (0.01)

SB → MVPA: 0.01 (0.01)

SB → sleep: − 0.00 (0.01)

Task-switching – single reaction time

SB → LPA: 7.45 (5.01)

SB → MVPA: − 23.12 (10.63)

SB → sleep: 4.12 (5.31)

Task-switching – mixed-repeat reaction time

SB → LPA: 5.00 (6.24)

SB → MVPA: − 27.06 (13.24)

SB → sleep: − 12.2 (6.61)

Task-switching – mixed-switch reaction time

SB → LPA: 1.04 (8.23)

SB → MVPA: − 28.24 (17.45)

SB → sleep: − 17.21 (8.71)

Task-switching – local switch cost reaction time

SB → LPA: − 3.93 (5.98)

SB → MVPA: − 0.40 (12.67)

SB → sleep: − 5.19 (6.33)

Task-switching – global switch cost reaction time

SB → LPA: − 2.84 (6.39)

SB → MVPA: − 1.54 (13.55)

SB → sleep: − 16.86 (6.77)

Task-switching – single accuracy

SB → LPA: − 0.00 (0.00)

SB → MVPA: 0.01 (0.01)

SB → sleep: − 0.01 (0.00)

Task-switching – mixed-repeat accuracy

SB → LPA: − 0.01 (0.01)

SB → MVPA: 0.01 (0.01)

SB → sleep: − 0.01 (0.01)

Task-switching – mixed-switch accuracy

SB → LPA: − 0.01 (0.01)

SB → MVPA: 0.01 (0.01)

SB → sleep: − 0.01 (0.01)

Task-switching – local switch accuracy

SB → LPA: 0.00 (0.00)

SB → MVPA: 0.00 (0.01)

SB → sleep: − 0.00 (0.00)

Task-switching – global switch accuracy

SB → LPA: 0.00 (0.01)

SB → MVPA: − 0.00 (0.01)

SB → sleep: 0.01 (0.01)

Loprinzi et al. [65]

Adults (n = 5377) from the 2003–2006 National Health and Nutrition Examination Survey, USA; prospective cohort

SB, LPA, MVPA – waist-worn accelerometers; sleep – not assessed

HRQoL

Mekary et al. [12]/30 min

Age, sex, race–ethnicity, BMI, smoking status and education

β (95% CI)

HRQoL

SB → LPA: 0.92 (0.85, 1.01)

SB → MVPA: 0.28 (0.13, 0.58)

LPA → SB: 1.07 (0.98, 1.17)

LPA → MVPA: 0.30 (0.14, 0.65)

MVPA→ SB: 3.54 (1.70, 7.40)

MVPA → LPA: 3.3 (1.54, 7.02)

Vallance et al. [34]

Non-Hodgkin lymphoma survivors (n = 149) from the Western Australian

Cancer Registry, Australia; cross-sectional

SB bouts and non-bouts, standing, LPA, MVPA bouts and non-bouts – waist-worn accelerometers; sleep – self report

Fatigue and HRQoL

Mekary et al. [12]/30 min

Sex, non-Hodgkin lymphoma type and time since diagnosis, country of birth, highest level of education, working status, comorbidity and non-Hodgkin lymphoma treatment

β (95% CI)

Fatigue

Sleep ↔ SB bouts: 0.1 (− 1.0, 1.1)

Sleep ↔ SB non-bouts: 0.6 (− 0.5, 1.8)

Sleep ↔ LPA: 0.3 (− 0.8, 1.4)

Sleep ↔ MVPA non-bouts: 1.2 (− 2.4, 4.8)

Sleep ↔ MVPA bouts: 5.7 (1.8, 9.7)

SB bouts ↔ SB non-bouts: 0.5 (− 0.3, 1.4)

SB bouts ↔ LPA: 0.2 (− 0.5, 0.9)

SB bouts ↔ MVPA non-bouts: 1.1 (− 2.3, 4.5)

SB bouts ↔ MVPA bouts: 5.7 (1.6, 9.7)

SB non-bouts ↔ LPA: − 0.3 (− 1.5, 0.8)

SB non-bouts ↔ MVPA non-bouts: 0.6 (− 2.6, 3.9)

SB non-bouts ↔ MVPA bouts: 5.1 (1.0, 9.3)

LPA ↔ MVPA non-bouts: 0.9 (− 2.9, 4.8)

LPA ↔ MVPA bouts: 5.5 (1.5, 9.5)

MVPA non-bouts ↔ MVPA bouts: 4.5 (− 1.4, 10.5)

HRQoL

Sleep ↔ SB bouts: − 0.6 (− 1.9, 0.8)

Sleep ↔ SB non-bouts: − 0.2 (− 1.7, 1.3)

Sleep ↔ LPA: − 0.6 (− 2.1, 0.9)

Sleep ↔ MVPA non-bouts: 0.0 (− 4.7, 4.8)

Sleep ↔ MVPA bouts: 4.5 (− 0.8, 9.7)

SB bouts ↔ SB non-bouts: 0.4 (− 0.8, 1.5)

SB bouts ↔ LPA: − 0.1 (− 0.9, 0.8)

SB bouts ↔ MVPA non-bouts: 0.6 (− 3.9, 5.1)

SB bouts ↔ MVPA bouts: 5.0 (− 0.4, 10.4)

SB non-bouts ↔ LPA: − 0.4 (− 1.9, 1.1)

SB non-bouts ↔ MVPA non-bouts: 0.2 (− 4.1, 4.5)

SB non-bouts ↔ MVPA bouts: 4.6 (− 0.8, 10.1)

LPA ↔ MVPA non-bouts: 0.6 (− 4.4, 5.7)

LPA ↔ MVPA bouts: 5.1 (− 0.2, 10.4)

MVPA non-bouts ↔ MVPA bouts: 4.4 (− 3.5, 12.3)

Van Roekel et al. [73]

Colorectal cancer survivors (n = 145) from the Energy for life after ColoRectal cancer study, Netherlands; cross-sectional

Sleep, SB, standing, physical activity (defined as > 1.5 METs) – triaxial MOX activity monitor

HRQoL

Mekary et al. [12]/60 min

Age, sex, number of comorbidities, smoking status, time since diagnosis, cancer stage, BMI, perceived deficiency in social support score, chemotherapy received, stoma, tumor subsite, education level and having a partner.

β (95% CI)

Global quality of life

SB → standing: 1.0 (0.7, 1.5)

SB → physical activity: 1.2 (0.6, 2.5)

Standing → physical activity: 1.2 (0.5, 3.1)

Physical functioning

SB → standing: 1.1 (0.7, 1.7)

SB → physical activity: 1.7 (0.8, 3.7)

Standing → physical activity: 1.5 (0.5, 4.3)

Role functioning

SB → standing: 1.2 (0.8, 1.8)

SB → physical activity: 0.7 (0.3, 1.5)

Standing → physical activity: 0.6 (0.2, 1.6)

Social functioning

SB → standing: 1.2 (0.8, 1.8)

SB → physical activity: 0.6 (0.3, 1.3)

Standing → physical activity: 0.5 (0.2, 1.4)

Disability

SB → standing: 0.6 (0.4, 0.9)

SB → physical activity: 0.9 (0.4, 1.9)

Standing → physical activity: 1.6 (0.6, 4.2)

Fatigue

SB → standing: 1.0 (0.6, 1.4)

SB → physical activity: 0.6 (0.3, 1.3)

Standing → physical activity: 0.7 (0.3, 1.7)

Depression

SB → standing: 1.1 (0.7, 1.6)

SB → physical activity: 0.8 (0.4, 1.6)

Standing → physical activity: 0.8 (0.3, 1.9)

Anxiety

SB → standing: 1.1 (0.7, 1.5)

SB → physical activity: 0.7 (0.4, 1.5)

Standing → physical activity: 0.7 (0.3, 1.7)

  1. SB sedentary behaviour, LPA light intensity physical activity, MVPA moderate-to-vigorous intensity physical activity, MPA moderate intensity physical activity, HRQoL health-related quality of life, MET metabolic equivalent of task, CI confidence interval