Ease of walking associates with greater free-living physical activity and reduced depressive symptomology in breast cancer survivors: pilot randomized trial

Carter, Stephen J.; Hunter, Gary R.; Norian, Lyse A.; Turan, Bülent; Rogers, Laura Q.

doi:10.1007/s00520-017-4015-y

Cited by 10 publications

(7 citation statements)

References 42 publications

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“…Multiple randomized controlled trials over the last two decades have shown structured exercise training favorably influences general health/well-being in cancer populations (Speck et al 2010). Consistent with the extensive phenotypic changes of habitual exercise, we have previously shown a modest reduction in oxygen cost of walking associated with greater free-living physical activity in BCS (Carter et al 2018). Given the known synchrony between physiological and psychological constructs, it is reasonable to suspect that improved ease of walking (i.e., ↓ difficulty) similarly contributes to greater exercise selfefficacy/confidence.…”

Section: Introductionsupporting

confidence: 78%

“…2005;Browning et al 2006). Since many daily tasks are performed at relatively low intensity, even modest improvements related to submaximal fitness and/or walking ease may produce meaningful benefit to independent-living (Carter et al 2018). In the present study, we reasoned that improved ease of walking would relate to increased confidence level as evidenced by favorable changes in exercise self-efficacy.…”

Section: Discussionmentioning

confidence: 85%

“…The present investigation is a secondary analysis from a sub-sample enrolled in a twoarmed, randomized study testing a 3-month physical activity behavior-change intervention vs. control group (Rogers et al 2012), supplemented to examine additional outcomes (Carter et al 2018). Participants from both study groups (i.e., 17 received a 3-month physical activity behavior-change intervention focused on walking and 12 received written materials related to physical activity) were pooled for the purposes of this pilot study focusing on associations among change scores (i.e., deltas) related to the standardized walking task.…”

Section: Designmentioning

confidence: 99%

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Inverse association between changes in energetic cost of walking and vertical accelerations in non-metastatic breast cancer survivors

et al. 2019

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Purpose: With accelerometry, the utility to detect changes in physical activity are predicated on the assumption that walking energetics and gait mechanics do not change. The present work examined associations between changes (Δ) in walking energetics, exercise self-efficacy, and several accelerometer-derived metrics. Methods: Secondary analyses were performed among a sub-sample (n=29) of breast cancer survivors participating in a larger randomized trial. During 4 minutes of treadmill walking (0.89 m•s −1 , 0% grade), indirect calorimetry quantified steady-state energy expenditure (EE), wherein, participants were fitted with a heart rate monitor and hip-worn triaxial accelerometer. Exercise self-efficacy was measured using a 9-item questionnaire, while vector magnitude (VM) and individual planes (e.g., mediolateral, vertical, and anteroposterior) of movement were extracted for data analyses. Evaluations were made at baseline and after 3 months. Results: From baseline to 3 months, the energetic cost of walking (kcals•min −1) significantly decreased by an average of −5.1% (p = 0.001; d = 0.46). Conversely, VM significantly increased (p = 0.007; d = 0.53), exclusively due to greater vertical accelerations (acc) (+5.7 ± 7.8 acc; p = 0.001; d = 0.69). Changes in vertical accelerations were inversely and positively associated with Δwalking EE (r = −0.37; p = 0.047) and Δexercise self-efficacy (r = 0.39; p = 0.034), respectively. Conclusion: Hip-worn accelerometers do not appear well-suited to correctly detect changes in ease of walking as evidenced by reduced energetic cost. Further research should determine if a divergence between measured EE and vertical accelerations could contribute to erroneous inferences in free-living physical activity.

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Section: Introductionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 85%

Section: Designmentioning

confidence: 99%

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Inverse association between changes in energetic cost of walking and vertical accelerations in non-metastatic breast cancer survivors

et al. 2019

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“…Wang et al () showed that increased CRF significantly compromised walking ability in patients with leukaemia and lymphoma. Carter, Hunter, Norian, Turan, and Rogers () revealed that improved ease of walking was associated with lower depressive symptomatology. In other words, it is assumed that the significant reduction of CRF and psychological distress in the HF group resulted in improved walking ability.…”

Section: Discussionmentioning

confidence: 99%

Low-intensity exercise therapy with high frequency improves physical function and mental and physical symptoms in patients with haematological malignancies undergoing chemotherapy

et al. 2018

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This study aimed to investigate the effects of low‐intensity exercise therapy (LIET) on the physical and mental symptoms and functions in patients with haematological malignancies undergoing chemotherapy. Forty‐four patients hospitalised for chemotherapy performed LIET. The exercise intensity of LIET was defined as achieving <40% of the predicted maximum heart rate calculated using the Karvonen formula. LIET consisted of aerobic and resistance training, which was carried out on weekdays. The intervention was omitted in the case of poor general health status and strong patient refusal. Muscular and physical function, activities of daily living (ADLs), psychological distress and quality of life (QOL) were evaluated upon initiation of rehabilitation and at discharge. Participants were divided into high‐ and low‐frequency groups according to their LIET frequency. Two‐way repeated‐measures analysis of variance was used for statistical analysis. In the high‐frequency group, muscle function was maintained, while physical function, ADLs, psychological distress and QOL were significantly improved. However, in the low‐frequency group, muscle function of the lower limb was significantly reduced and no other improvement was observed. Low‐intensity exercise therapy could be a potential treatment strategy for patients with haematological malignancies undergoing chemotherapy who are unable to perform mid‐ or high‐intensity exercise.

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“…In addition, it has also been established that it is important in maintaining ease in walking in nonathletes [ 71 – 73 ]. This is important since ease of walking has been established as one factor that influences free living physical activity [ 64 , 66 , 74 ] and free living physical activity has profound effects on metabolic health. Muscle elasticity can also play a critical role in locomotion.…”

Section: Sarcopenia and Obesitymentioning

confidence: 99%

Sarcopenia and Its Implications for Metabolic Health

et al. 2019

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Sarcopenia not only affects the ability to lead an active lifestyle but also contributes to increased obesity, reduced quality of life, osteoporosis, and metabolic health, in part due to reduced locomotion economy and ease. On the other hand, increased obesity, decreased quality of life, and reduced metabolic health also contribute to sarcopenia. The purpose of this mini-review is to discuss the implications sarcopenia has for the development of obesity and comorbidities that occur with aging.

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Ease of walking associates with greater free-living physical activity and reduced depressive symptomology in breast cancer survivors: pilot randomized trial

Abstract: These data support the assertion that reducing the physiological difficulty of walking may contribute to greater engagement in free-living PA, less sedentary time, and decreased psychosocial distress among BCS.

Cited by 10 publications

References 42 publications

Inverse association between changes in energetic cost of walking and vertical accelerations in non-metastatic breast cancer survivors

Inverse association between changes in energetic cost of walking and vertical accelerations in non-metastatic breast cancer survivors

Low-intensity exercise therapy with high frequency improves physical function and mental and physical symptoms in patients with haematological malignancies undergoing chemotherapy

Sarcopenia and Its Implications for Metabolic Health

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